dpsoftrast.c

   1
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <math.h>
   5 #include "quakedef.h"
   6 #include "dpsoftrast.h"
   7
   8 #ifndef __cplusplus
   9 typedef qboolean bool;
  10 #endif
  11
  12 #if defined(__GNUC__)
  13 #define ALIGN(var) var __attribute__((__aligned__(16)))
  14 #elif defined(_MSC_VER)
  15 #define ALIGN(var) __declspec(align(16)) var
  16 #else
  17 #define ALIGN(var) var
  18 #endif
  19
  20 #ifdef SSE2_PRESENT
  21 #include <emmintrin.h>
  22
  23 #define MM_MALLOC(size) _mm_malloc(size, 16)
  24
  25 static void *MM_CALLOC(size_t nmemb, size_t size)
  26 {
  27         void *ptr = _mm_malloc(nmemb*size, 16);
  28         if(ptr != NULL) memset(ptr, 0, nmemb*size);
  29         return ptr;
  30 }
  31
  32 #define MM_FREE _mm_free
  33 #else
  34 #define MM_MALLOC(size) malloc(size)
  35 #define MM_CALLOC(nmemb, size) calloc(nmemb, size)
  36 #define MM_FREE free
  37 #endif
  38
  39 typedef enum DPSOFTRAST_ARRAY_e
  40 {
  41         DPSOFTRAST_ARRAY_POSITION,
  42         DPSOFTRAST_ARRAY_COLOR,
  43         DPSOFTRAST_ARRAY_TEXCOORD0,
  44         DPSOFTRAST_ARRAY_TEXCOORD1,
  45         DPSOFTRAST_ARRAY_TEXCOORD2,
  46         DPSOFTRAST_ARRAY_TEXCOORD3,
  47         DPSOFTRAST_ARRAY_TEXCOORD4,
  48         DPSOFTRAST_ARRAY_TEXCOORD5,
  49         DPSOFTRAST_ARRAY_TEXCOORD6,
  50         DPSOFTRAST_ARRAY_TEXCOORD7,
  51         DPSOFTRAST_ARRAY_TOTAL
  52 }
  53 DPSOFTRAST_ARRAY;
  54
  55 typedef struct DPSOFTRAST_Texture_s
  56 {
  57         int flags;
  58         int width;
  59         int height;
  60         int depth;
  61         int sides;
  62         DPSOFTRAST_TEXTURE_FILTER filter;
  63         int mipmaps;
  64         int size;
  65         unsigned char *bytes;
  66         int mipmap[DPSOFTRAST_MAXMIPMAPS][5];
  67 }
  68 DPSOFTRAST_Texture;
  69
  70 typedef struct DPSOFTRAST_State_User_s
  71 {
  72         int colormask[4];
  73         int blendfunc[2];
  74         int blendsubtract;
  75         int depthmask;
  76         int depthtest;
  77         int depthfunc;
  78         int scissortest;
  79         int cullface;
  80         int alphatest;
  81         int alphafunc;
  82         float alphavalue;
  83         int scissor[4];
  84         int viewport[4];
  85         float depthrange[2];
  86         float polygonoffset[2];
  87         float color[4];
  88 }
  89 DPSOFTRAST_State_User;
  90
  91 #define DPSOFTRAST_MAXSUBSPAN 16
  92
  93 typedef ALIGN(struct DPSOFTRAST_State_Draw_Span_s
  94 {
  95         int start; // pixel index
  96         int length; // pixel count
  97         int startx; // usable range (according to pixelmask)
  98         int endx; // usable range (according to pixelmask)
  99         unsigned char mip[DPSOFTRAST_MAXTEXTUREUNITS]; // texcoord to screen space density values (for picking mipmap of textures)
 100         unsigned char *pixelmask; // true for pixels that passed depth test, false for others
 101         // [0][n][] is start interpolant values (projected)
 102         // [1][n][] is end interpolant values (projected)
 103         // [0][DPSOFTRAST_ARRAY_TOTAL][] is start screencoord4f
 104         // [1][DPSOFTRAST_ARRAY_TOTAL][] is end screencoord4f
 105         // NOTE: screencoord4f[3] is W (basically 1/Z), useful for depthbuffer
 106         ALIGN(float data[2][DPSOFTRAST_ARRAY_TOTAL+1][4]);
 107 }
 108 DPSOFTRAST_State_Draw_Span);
 109
 110 #define DPSOFTRAST_DRAW_MAXSPANQUEUE 1024
 111
 112 typedef struct DPSOFTRAST_State_Draw_s
 113 {
 114         int numvertices;
 115         int maxvertices;
 116         float *in_array4f[DPSOFTRAST_ARRAY_TOTAL];
 117         float *post_array4f[DPSOFTRAST_ARRAY_TOTAL];
 118         float *screencoord4f;
 119
 120         // spans are queued in this structure for dispatch to the pixel shader,
 121         // partly to improve cache locality, partly for batching purposes, spans
 122         // are flushed before DrawTriangles returns to caller
 123         int numspans;
 124         DPSOFTRAST_State_Draw_Span spanqueue[DPSOFTRAST_DRAW_MAXSPANQUEUE];
 125 }
 126 DPSOFTRAST_State_Draw;
 127
 128 #define DPSOFTRAST_VALIDATE_FB 1
 129 #define DPSOFTRAST_VALIDATE_DEPTHFUNC 2
 130 #define DPSOFTRAST_VALIDATE_BLENDFUNC 4
 131 #define DPSOFTRAST_VALIDATE_DRAW (DPSOFTRAST_VALIDATE_FB | DPSOFTRAST_VALIDATE_DEPTHFUNC | DPSOFTRAST_VALIDATE_BLENDFUNC)
 132
 133 typedef enum DPSOFTRAST_BLENDMODE_e
 134 {
 135         DPSOFTRAST_BLENDMODE_OPAQUE,
 136         DPSOFTRAST_BLENDMODE_ALPHA,
 137         DPSOFTRAST_BLENDMODE_ADDALPHA,
 138         DPSOFTRAST_BLENDMODE_ADD,
 139         DPSOFTRAST_BLENDMODE_INVMOD,
 140         DPSOFTRAST_BLENDMODE_MUL,
 141         DPSOFTRAST_BLENDMODE_MUL2,
 142         DPSOFTRAST_BLENDMODE_SUBALPHA,
 143         DPSOFTRAST_BLENDMODE_PSEUDOALPHA,
 144         DPSOFTRAST_BLENDMODE_TOTAL
 145 }
 146 DPSOFTRAST_BLENDMODE;
 147
 148 typedef ALIGN(struct DPSOFTRAST_State_s
 149 {
 150         // DPSOFTRAST_VALIDATE_ flags
 151         int validate;
 152
 153         int fb_colormask;
 154         int fb_width;
 155         int fb_height;
 156         unsigned int *fb_depthpixels;
 157         unsigned int *fb_colorpixels[4];
 158
 159         const float *pointer_vertex3f;
 160         const float *pointer_color4f;
 161         const unsigned char *pointer_color4ub;
 162         const float *pointer_texcoordf[DPSOFTRAST_MAXTEXCOORDARRAYS];
 163         int stride_vertex;
 164         int stride_color;
 165         int stride_texcoord[DPSOFTRAST_MAXTEXCOORDARRAYS];
 166         int components_texcoord[DPSOFTRAST_MAXTEXCOORDARRAYS];
 167         DPSOFTRAST_Texture *texbound[DPSOFTRAST_MAXTEXTUREUNITS];
 168
 169         int shader_mode;
 170         int shader_permutation;
 171         ALIGN(float uniform4f[DPSOFTRAST_UNIFORM_TOTAL*4]);
 172         int uniform1i[DPSOFTRAST_UNIFORM_TOTAL];
 173
 174         // derived values (DPSOFTRAST_VALIDATE_FB)
 175         int fb_clearscissor[4];
 176         int fb_viewport[4];
 177         int fb_viewportscissor[4];
 178         float fb_viewportcenter[2];
 179         float fb_viewportscale[2];
 180
 181         // derived values (DPSOFTRAST_VALIDATE_DEPTHFUNC)
 182         int fb_depthfunc;
 183
 184         // derived values (DPSOFTRAST_VALIDATE_BLENDFUNC)
 185         int fb_blendmode;
 186
 187         int texture_max;
 188         int texture_end;
 189         int texture_firstfree;
 190         DPSOFTRAST_Texture *texture;
 191
 192         int bigendian;
 193
 194         // error reporting
 195         const char *errorstring;
 196
 197         DPSOFTRAST_State_User user;
 198
 199         DPSOFTRAST_State_Draw draw;
 200 }
 201 DPSOFTRAST_State);
 202
 203 DPSOFTRAST_State dpsoftrast;
 204
 205 extern int dpsoftrast_test;
 206
 207 #define DPSOFTRAST_DEPTHSCALE (1024.0f*1048576.0f)
 208 #define DPSOFTRAST_BGRA8_FROM_RGBA32F(r,g,b,a) (((int)(r * 255.0f + 0.5f) << 16) | ((int)(g * 255.0f + 0.5f) << 8) | (int)(b * 255.0f + 0.5f) | ((int)(a * 255.0f + 0.5f) << 24))
 209 #define DPSOFTRAST_DEPTH32_FROM_DEPTH32F(d) ((int)(DPSOFTRAST_DEPTHSCALE * (1-d)))
 210 #define DPSOFTRAST_DRAW_MAXSPANLENGTH 256
 211
 212 void DPSOFTRAST_RecalcFB(void)
 213 {
 214         // calculate framebuffer scissor, viewport, viewport clipped by scissor,
 215         // and viewport projection values
 216         int x1, x2, x3, x4, x5, x6;
 217         int y1, y2, y3, y4, y5, y6;
 218         x1 = dpsoftrast.user.scissor[0];
 219         x2 = dpsoftrast.user.scissor[0] + dpsoftrast.user.scissor[2];
 220         x3 = dpsoftrast.user.viewport[0];
 221         x4 = dpsoftrast.user.viewport[0] + dpsoftrast.user.viewport[2];
 222         y1 = dpsoftrast.fb_height - dpsoftrast.user.scissor[1] - dpsoftrast.user.scissor[3];
 223         y2 = dpsoftrast.fb_height - dpsoftrast.user.scissor[1];
 224         y3 = dpsoftrast.fb_height - dpsoftrast.user.viewport[1] - dpsoftrast.user.viewport[3];
 225         y4 = dpsoftrast.fb_height - dpsoftrast.user.viewport[1];
 226         if (!dpsoftrast.user.scissortest) {x1 = 0;y1 = 0;x2 = dpsoftrast.fb_width;y2 = dpsoftrast.fb_height;}
 227         if (x1 < 0) x1 = 0;
 228         if (x2 > dpsoftrast.fb_width) x2 = dpsoftrast.fb_width;
 229         if (x3 < 0) x1 = 0;
 230         if (x4 > dpsoftrast.fb_width) x4 = dpsoftrast.fb_width;
 231         if (y1 < 0) y1 = 0;
 232         if (y2 > dpsoftrast.fb_height) y2 = dpsoftrast.fb_height;
 233         if (y3 < 0) y1 = 0;
 234         if (y4 > dpsoftrast.fb_height) y4 = dpsoftrast.fb_height;
 235         x5 = x1;if (x5 < x3) x5 = x3;
 236         x6 = x2;if (x6 > x4) x4 = x4;
 237         y5 = y1;if (y5 < y3) y5 = y3;
 238         y6 = y2;if (y6 > y4) y6 = y4;
 239         dpsoftrast.fb_clearscissor[0] = x1;
 240         dpsoftrast.fb_clearscissor[1] = y1;
 241         dpsoftrast.fb_clearscissor[2] = x2 - x1;
 242         dpsoftrast.fb_clearscissor[3] = y2 - y1;
 243         dpsoftrast.fb_viewport[0] = x3;
 244         dpsoftrast.fb_viewport[1] = y3;
 245         dpsoftrast.fb_viewport[2] = x4 - x3;
 246         dpsoftrast.fb_viewport[3] = y4 - y3;
 247         dpsoftrast.fb_viewportscissor[0] = x5;
 248         dpsoftrast.fb_viewportscissor[1] = y5;
 249         dpsoftrast.fb_viewportscissor[2] = x6 - x5;
 250         dpsoftrast.fb_viewportscissor[3] = y6 - y5;
 251         dpsoftrast.fb_viewportcenter[0] = dpsoftrast.user.viewport[0] + 0.5f * dpsoftrast.user.viewport[2] - 0.5f;
 252         dpsoftrast.fb_viewportcenter[1] = dpsoftrast.fb_height - dpsoftrast.user.viewport[1] - 0.5f * dpsoftrast.user.viewport[3] - 0.5f;
 253         dpsoftrast.fb_viewportscale[0] = 0.5f * dpsoftrast.user.viewport[2];
 254         dpsoftrast.fb_viewportscale[1] = -0.5f * dpsoftrast.user.viewport[3];
 255 }
 256
 257 void DPSOFTRAST_RecalcDepthFunc(void)
 258 {
 259         dpsoftrast.fb_depthfunc = dpsoftrast.user.depthtest ? dpsoftrast.user.depthfunc : GL_ALWAYS;
 260 }
 261
 262 int blendmodetable[][4] =
 263 {
 264         {DPSOFTRAST_BLENDMODE_OPAQUE, GL_ONE, GL_ZERO, false},
 265         {DPSOFTRAST_BLENDMODE_ALPHA, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, false},
 266         {DPSOFTRAST_BLENDMODE_ADDALPHA, GL_SRC_ALPHA, GL_ONE, false},
 267         {DPSOFTRAST_BLENDMODE_ADD, GL_ONE, GL_ONE, false},
 268         {DPSOFTRAST_BLENDMODE_INVMOD, GL_ZERO, GL_ONE_MINUS_SRC_COLOR, false},
 269         {DPSOFTRAST_BLENDMODE_MUL, GL_ZERO, GL_SRC_COLOR, false},
 270         {DPSOFTRAST_BLENDMODE_MUL, GL_DST_COLOR, GL_ZERO, false},
 271         {DPSOFTRAST_BLENDMODE_MUL2, GL_DST_COLOR, GL_SRC_COLOR, false},
 272         {DPSOFTRAST_BLENDMODE_PSEUDOALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA, false},
 273         {DPSOFTRAST_BLENDMODE_SUBALPHA, GL_SRC_COLOR, GL_ONE, true}
 274 };
 275
 276 void DPSOFTRAST_RecalcBlendFunc(void)
 277 {
 278         int i;
 279         dpsoftrast.fb_blendmode = DPSOFTRAST_BLENDMODE_OPAQUE;
 280         for (i = 0;i < (int)(sizeof(blendmodetable) / sizeof(blendmodetable[0]));i++)
 281         {
 282                 if (dpsoftrast.user.blendfunc[0] == blendmodetable[i][1] && dpsoftrast.user.blendfunc[1] == blendmodetable[i][2] && dpsoftrast.user.blendsubtract == blendmodetable[i][3])
 283                 {
 284                         dpsoftrast.fb_blendmode = blendmodetable[i][0];
 285                         break;
 286                 }
 287         }
 288 }
 289
 290 #define DPSOFTRAST_ValidateQuick(f) ((dpsoftrast.validate & (f)) ? (DPSOFTRAST_Validate(f), 0) : 0)
 291
 292 void DPSOFTRAST_Validate(int mask)
 293 {
 294         mask &= dpsoftrast.validate;
 295         if (!mask)
 296                 return;
 297         if (mask & DPSOFTRAST_VALIDATE_FB)
 298         {
 299                 dpsoftrast.validate &= ~DPSOFTRAST_VALIDATE_FB;
 300                 DPSOFTRAST_RecalcFB();
 301         }
 302         if (mask & DPSOFTRAST_VALIDATE_DEPTHFUNC)
 303         {
 304                 dpsoftrast.validate &= ~DPSOFTRAST_VALIDATE_DEPTHFUNC;
 305                 DPSOFTRAST_RecalcDepthFunc();
 306         }
 307         if (mask & DPSOFTRAST_VALIDATE_BLENDFUNC)
 308         {
 309                 dpsoftrast.validate &= ~DPSOFTRAST_VALIDATE_BLENDFUNC;
 310                 DPSOFTRAST_RecalcBlendFunc();
 311         }
 312 }
 313
 314 DPSOFTRAST_Texture *DPSOFTRAST_Texture_GetByIndex(int index)
 315 {
 316         if (index >= 1 && index < dpsoftrast.texture_end && dpsoftrast.texture[index].bytes)
 317                 return &dpsoftrast.texture[index];
 318         return NULL;
 319 }
 320
 321 int DPSOFTRAST_Texture_New(int flags, int width, int height, int depth)
 322 {
 323         int w;
 324         int h;
 325         int d;
 326         int size;
 327         int s;
 328         int texnum;
 329         int mipmaps;
 330         int sides = (flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP) ? 6 : 1;
 331         int texformat = flags & DPSOFTRAST_TEXTURE_FORMAT_COMPAREMASK;
 332         DPSOFTRAST_Texture *texture;
 333         if (width*height*depth < 1)
 334         {
 335                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: width, height or depth is less than 1";
 336                 return 0;
 337         }
 338         if (width > DPSOFTRAST_TEXTURE_MAXSIZE || height > DPSOFTRAST_TEXTURE_MAXSIZE || depth > DPSOFTRAST_TEXTURE_MAXSIZE)
 339         {
 340                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: texture size is too large";
 341                 return 0;
 342         }
 343         switch(texformat)
 344         {
 345         case DPSOFTRAST_TEXTURE_FORMAT_BGRA8:
 346         case DPSOFTRAST_TEXTURE_FORMAT_RGBA8:
 347         case DPSOFTRAST_TEXTURE_FORMAT_ALPHA8:
 348                 break;
 349         case DPSOFTRAST_TEXTURE_FORMAT_DEPTH:
 350                 if (flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP)
 351                 {
 352                         dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FORMAT_DEPTH only permitted on 2D textures";
 353                         return 0;
 354                 }
 355                 if (depth != 1)
 356                 {
 357                         dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FORMAT_DEPTH only permitted on 2D textures";
 358                         return 0;
 359                 }
 360                 if ((flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP) && (texformat == DPSOFTRAST_TEXTURE_FORMAT_DEPTH))
 361                 {
 362                         dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FORMAT_DEPTH does not permit mipmaps";
 363                         return 0;
 364                 }
 365                 break;
 366         }
 367         if (depth != 1 && (flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP))
 368         {
 369                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_CUBEMAP can not be used on 3D textures";
 370                 return 0;
 371         }
 372         if (depth != 1 && (flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
 373         {
 374                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_MIPMAP can not be used on 3D textures";
 375                 return 0;
 376         }
 377         if (depth != 1 && (flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
 378         {
 379                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_MIPMAP can not be used on 3D textures";
 380                 return 0;
 381         }
 382         if ((flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP) && (flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
 383         {
 384                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_MIPMAP can not be used on cubemap textures";
 385                 return 0;
 386         }
 387         if ((width & (width-1)) || (height & (height-1)) || (depth & (depth-1)))
 388         {
 389                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: dimensions are not power of two";
 390                 return 0;
 391         }
 392         // find first empty slot in texture array
 393         for (texnum = dpsoftrast.texture_firstfree;texnum < dpsoftrast.texture_end;texnum++)
 394                 if (!dpsoftrast.texture[texnum].bytes)
 395                         break;
 396         dpsoftrast.texture_firstfree = texnum + 1;
 397         if (dpsoftrast.texture_max <= texnum)
 398         {
 399                 // expand texture array as needed
 400                 if (dpsoftrast.texture_max < 1024)
 401                         dpsoftrast.texture_max = 1024;
 402                 else
 403                         dpsoftrast.texture_max *= 2;
 404                 dpsoftrast.texture = (DPSOFTRAST_Texture *)realloc(dpsoftrast.texture, dpsoftrast.texture_max * sizeof(DPSOFTRAST_Texture));
 405         }
 406         if (dpsoftrast.texture_end <= texnum)
 407                 dpsoftrast.texture_end = texnum + 1;
 408         texture = &dpsoftrast.texture[texnum];
 409         memset(texture, 0, sizeof(*texture));
 410         texture->flags = flags;
 411         texture->width = width;
 412         texture->height = height;
 413         texture->depth = depth;
 414         texture->sides = sides;
 415         w = width;
 416         h = height;
 417         d = depth;
 418         size = 0;
 419         mipmaps = 0;
 420         w = width;
 421         h = height;
 422         d = depth;
 423         for (;;)
 424         {
 425                 s = w * h * d * sides * 4;
 426                 texture->mipmap[mipmaps][0] = size;
 427                 texture->mipmap[mipmaps][1] = s;
 428                 texture->mipmap[mipmaps][2] = w;
 429                 texture->mipmap[mipmaps][3] = h;
 430                 texture->mipmap[mipmaps][4] = d;
 431                 size += s;
 432                 mipmaps++;
 433                 if (w * h * d == 1 || !(flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
 434                         break;
 435                 if (w > 1) w >>= 1;
 436                 if (h > 1) h >>= 1;
 437                 if (d > 1) d >>= 1;
 438         }
 439         texture->mipmaps = mipmaps;
 440         texture->size = size;
 441
 442         // allocate the pixels now
 443         texture->bytes = (unsigned char *)MM_CALLOC(1, size);
 444
 445         return texnum;
 446 }
 447 void DPSOFTRAST_Texture_Free(int index)
 448 {
 449         DPSOFTRAST_Texture *texture;
 450         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
 451         if (texture->bytes)
 452                 MM_FREE(texture->bytes);
 453         texture->bytes = NULL;
 454         memset(texture, 0, sizeof(*texture));
 455         // adjust the free range and used range
 456         if (dpsoftrast.texture_firstfree > index)
 457                 dpsoftrast.texture_firstfree = index;
 458         while (dpsoftrast.texture_end > 0 && dpsoftrast.texture[dpsoftrast.texture_end-1].bytes == NULL)
 459                 dpsoftrast.texture_end--;
 460 }
 461 void DPSOFTRAST_Texture_CalculateMipmaps(int index)
 462 {
 463         int i, x, y, z, w, layer0, layer1, row0, row1;
 464         unsigned char *o, *i0, *i1, *i2, *i3;
 465         DPSOFTRAST_Texture *texture;
 466         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
 467         if (texture->mipmaps <= 1)
 468                 return;
 469         for (i = 1;i < texture->mipmaps;i++)
 470         {
 471                 for (z = 0;z < texture->mipmap[i][4];z++)
 472                 {
 473                         layer0 = z*2;
 474                         layer1 = z*2+1;
 475                         if (layer1 >= texture->mipmap[i-1][4])
 476                                 layer1 = texture->mipmap[i-1][4]-1;
 477                         for (y = 0;y < texture->mipmap[i][3];y++)
 478                         {
 479                                 row0 = y*2;
 480                                 row1 = y*2+1;
 481                                 if (row1 >= texture->mipmap[i-1][3])
 482                                         row1 = texture->mipmap[i-1][3]-1;
 483                                 o =  texture->bytes + texture->mipmap[i  ][0] + 4*((texture->mipmap[i  ][3] * z      + y   ) * texture->mipmap[i  ][2]);
 484                                 i0 = texture->bytes + texture->mipmap[i-1][0] + 4*((texture->mipmap[i-1][3] * layer0 + row0) * texture->mipmap[i-1][2]);
 485                                 i1 = texture->bytes + texture->mipmap[i-1][0] + 4*((texture->mipmap[i-1][3] * layer0 + row1) * texture->mipmap[i-1][2]);
 486                                 i2 = texture->bytes + texture->mipmap[i-1][0] + 4*((texture->mipmap[i-1][3] * layer1 + row0) * texture->mipmap[i-1][2]);
 487                                 i3 = texture->bytes + texture->mipmap[i-1][0] + 4*((texture->mipmap[i-1][3] * layer1 + row1) * texture->mipmap[i-1][2]);
 488                                 w = texture->mipmap[i][2];
 489                                 if (layer1 > layer0)
 490                                 {
 491                                         if (texture->mipmap[i-1][2] > 1)
 492                                         {
 493                                                 // average 3D texture
 494                                                 for (x = 0;x < w;x++, o += 4, i0 += 8, i1 += 8, i2 += 8, i3 += 8)
 495                                                 {
 496                                                         o[0] = (i0[0] + i0[4] + i1[0] + i1[4] + i2[0] + i2[4] + i3[0] + i3[4] + 4) >> 3;
 497                                                         o[1] = (i0[1] + i0[5] + i1[1] + i1[5] + i2[1] + i2[5] + i3[1] + i3[5] + 4) >> 3;
 498                                                         o[2] = (i0[2] + i0[6] + i1[2] + i1[6] + i2[2] + i2[6] + i3[2] + i3[6] + 4) >> 3;
 499                                                         o[3] = (i0[3] + i0[7] + i1[3] + i1[7] + i2[3] + i2[7] + i3[3] + i3[7] + 4) >> 3;
 500                                                 }
 501                                         }
 502                                         else
 503                                         {
 504                                                 // average 3D mipmap with parent width == 1
 505                                                 for (x = 0;x < w;x++, o += 4, i0 += 8, i1 += 8)
 506                                                 {
 507                                                         o[0] = (i0[0] + i1[0] + i2[0] + i3[0] + 2) >> 2;
 508                                                         o[1] = (i0[1] + i1[1] + i2[1] + i3[1] + 2) >> 2;
 509                                                         o[2] = (i0[2] + i1[2] + i2[2] + i3[2] + 2) >> 2;
 510                                                         o[3] = (i0[3] + i1[3] + i2[3] + i3[3] + 2) >> 2;
 511                                                 }
 512                                         }
 513                                 }
 514                                 else
 515                                 {
 516                                         if (texture->mipmap[i-1][2] > 1)
 517                                         {
 518                                                 // average 2D texture (common case)
 519                                                 for (x = 0;x < w;x++, o += 4, i0 += 8, i1 += 8)
 520                                                 {
 521                                                         o[0] = (i0[0] + i0[4] + i1[0] + i1[4] + 2) >> 2;
 522                                                         o[1] = (i0[1] + i0[5] + i1[1] + i1[5] + 2) >> 2;
 523                                                         o[2] = (i0[2] + i0[6] + i1[2] + i1[6] + 2) >> 2;
 524                                                         o[3] = (i0[3] + i0[7] + i1[3] + i1[7] + 2) >> 2;
 525                                                 }
 526                                         }
 527                                         else
 528                                         {
 529                                                 // 2D texture with parent width == 1
 530                                                 o[0] = (i0[0] + i1[0] + 1) >> 1;
 531                                                 o[1] = (i0[1] + i1[1] + 1) >> 1;
 532                                                 o[2] = (i0[2] + i1[2] + 1) >> 1;
 533                                                 o[3] = (i0[3] + i1[3] + 1) >> 1;
 534                                         }
 535                                 }
 536                         }
 537                 }
 538         }
 539 }
 540 void DPSOFTRAST_Texture_UpdatePartial(int index, int mip, const unsigned char *pixels, int blockx, int blocky, int blockwidth, int blockheight)
 541 {
 542         DPSOFTRAST_Texture *texture;
 543         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
 544
 545         // FIXME IMPLEMENT
 546
 547         dpsoftrast.errorstring = "DPSOFTRAST_Texture_UpdatePartial: Not implemented.";
 548 }
 549 void DPSOFTRAST_Texture_UpdateFull(int index, const unsigned char *pixels)
 550 {
 551         DPSOFTRAST_Texture *texture;
 552         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
 553
 554         memcpy(texture->bytes, pixels, texture->mipmap[0][1]);
 555         DPSOFTRAST_Texture_CalculateMipmaps(index);
 556 }
 557 int DPSOFTRAST_Texture_GetWidth(int index, int mip)
 558 {
 559         DPSOFTRAST_Texture *texture;
 560         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
 561         return texture->mipmap[mip][2];
 562 }
 563 int DPSOFTRAST_Texture_GetHeight(int index, int mip)
 564 {
 565         DPSOFTRAST_Texture *texture;
 566         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
 567         return texture->mipmap[mip][3];
 568 }
 569 int DPSOFTRAST_Texture_GetDepth(int index, int mip)
 570 {
 571         DPSOFTRAST_Texture *texture;
 572         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
 573         return texture->mipmap[mip][4];
 574 }
 575 unsigned char *DPSOFTRAST_Texture_GetPixelPointer(int index, int mip)
 576 {
 577         DPSOFTRAST_Texture *texture;
 578         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
 579         return texture->bytes + texture->mipmap[mip][0];
 580 }
 581 void DPSOFTRAST_Texture_Filter(int index, DPSOFTRAST_TEXTURE_FILTER filter)
 582 {
 583         DPSOFTRAST_Texture *texture;
 584         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
 585         if (!(texture->flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP) && filter > DPSOFTRAST_TEXTURE_FILTER_LINEAR)
 586         {
 587                 dpsoftrast.errorstring = "DPSOFTRAST_Texture_Filter: requested filter mode requires mipmaps";
 588                 return;
 589         }
 590         texture->filter = filter;
 591 }
 592
 593 void DPSOFTRAST_SetRenderTargets(int width, int height, unsigned int *depthpixels, unsigned int *colorpixels0, unsigned int *colorpixels1, unsigned int *colorpixels2, unsigned int *colorpixels3)
 594 {
 595         dpsoftrast.fb_width = width;
 596         dpsoftrast.fb_height = height;
 597         dpsoftrast.fb_depthpixels = depthpixels;
 598         dpsoftrast.fb_colorpixels[0] = colorpixels0;
 599         dpsoftrast.fb_colorpixels[1] = colorpixels1;
 600         dpsoftrast.fb_colorpixels[2] = colorpixels2;
 601         dpsoftrast.fb_colorpixels[3] = colorpixels3;
 602 }
 603 void DPSOFTRAST_Viewport(int x, int y, int width, int height)
 604 {
 605         dpsoftrast.user.viewport[0] = x;
 606         dpsoftrast.user.viewport[1] = y;
 607         dpsoftrast.user.viewport[2] = width;
 608         dpsoftrast.user.viewport[3] = height;
 609         dpsoftrast.validate |= DPSOFTRAST_VALIDATE_FB;
 610 }
 611 void DPSOFTRAST_ClearColor(float r, float g, float b, float a)
 612 {
 613         int i, x1, y1, x2, y2, w, h, x, y;
 614         unsigned int *p;
 615         unsigned int c;
 616         DPSOFTRAST_Validate(DPSOFTRAST_VALIDATE_FB);
 617         x1 = dpsoftrast.fb_clearscissor[0];
 618         y1 = dpsoftrast.fb_clearscissor[1];
 619         x2 = dpsoftrast.fb_clearscissor[2];
 620         y2 = dpsoftrast.fb_clearscissor[1] + dpsoftrast.fb_clearscissor[3];
 621         w = x2 - x1;
 622         h = y2 - y1;
 623         if (w < 1 || h < 1)
 624                 return;
 625         // FIXME: honor dpsoftrast.fb_colormask?
 626         c = DPSOFTRAST_BGRA8_FROM_RGBA32F(r,g,b,a);
 627         for (i = 0;i < 4;i++)
 628         {
 629                 if (!dpsoftrast.fb_colorpixels[i])
 630                         continue;
 631                 for (y = y1;y < y2;y++)
 632                 {
 633                         p = dpsoftrast.fb_colorpixels[i] + y * dpsoftrast.fb_width;
 634                         for (x = x1;x < x2;x++)
 635                                 p[x] = c;
 636                 }
 637         }
 638 }
 639 void DPSOFTRAST_ClearDepth(float d)
 640 {
 641         int x1, y1, x2, y2, w, h, x, y;
 642         unsigned int *p;
 643         unsigned int c;
 644         DPSOFTRAST_Validate(DPSOFTRAST_VALIDATE_FB);
 645         x1 = dpsoftrast.fb_clearscissor[0];
 646         y1 = dpsoftrast.fb_clearscissor[1];
 647         x2 = dpsoftrast.fb_clearscissor[2];
 648         y2 = dpsoftrast.fb_clearscissor[1] + dpsoftrast.fb_clearscissor[3];
 649         w = x2 - x1;
 650         h = y2 - y1;
 651         if (w < 1 || h < 1)
 652                 return;
 653         c = DPSOFTRAST_DEPTH32_FROM_DEPTH32F(d);
 654         for (y = y1;y < y2;y++)
 655         {
 656                 p = dpsoftrast.fb_depthpixels + y * dpsoftrast.fb_width;
 657                 for (x = x1;x < x2;x++)
 658                         p[x] = c;
 659         }
 660 }
 661 void DPSOFTRAST_ColorMask(int r, int g, int b, int a)
 662 {
 663         dpsoftrast.user.colormask[0] = r != 0;
 664         dpsoftrast.user.colormask[1] = g != 0;
 665         dpsoftrast.user.colormask[2] = b != 0;
 666         dpsoftrast.user.colormask[3] = a != 0;
 667         dpsoftrast.fb_colormask = ((-dpsoftrast.user.colormask[0]) & 0x00FF0000) | ((-dpsoftrast.user.colormask[1]) & 0x0000FF00) | ((-dpsoftrast.user.colormask[2]) & 0x000000FF) | ((-dpsoftrast.user.colormask[3]) & 0xFF000000);
 668 }
 669 void DPSOFTRAST_DepthTest(int enable)
 670 {
 671         dpsoftrast.user.depthtest = enable;
 672         dpsoftrast.validate |= DPSOFTRAST_VALIDATE_DEPTHFUNC;
 673 }
 674 void DPSOFTRAST_ScissorTest(int enable)
 675 {
 676         dpsoftrast.user.scissortest = enable;
 677         dpsoftrast.validate |= DPSOFTRAST_VALIDATE_FB;
 678 }
 679 void DPSOFTRAST_Scissor(float x, float y, float width, float height)
 680 {
 681         dpsoftrast.user.scissor[0] = x;
 682         dpsoftrast.user.scissor[1] = y;
 683         dpsoftrast.user.scissor[2] = width;
 684         dpsoftrast.user.scissor[3] = height;
 685         dpsoftrast.validate |= DPSOFTRAST_VALIDATE_FB;
 686 }
 687
 688 void DPSOFTRAST_BlendFunc(int smodulate, int dmodulate)
 689 {
 690         // FIXME: validate
 691         dpsoftrast.user.blendfunc[0] = smodulate;
 692         dpsoftrast.user.blendfunc[1] = dmodulate;
 693         dpsoftrast.validate |= DPSOFTRAST_VALIDATE_BLENDFUNC;
 694 }
 695 void DPSOFTRAST_BlendSubtract(int enable)
 696 {
 697         dpsoftrast.user.blendsubtract = enable != 0;
 698         dpsoftrast.validate |= DPSOFTRAST_VALIDATE_BLENDFUNC;
 699 }
 700 void DPSOFTRAST_DepthMask(int enable)
 701 {
 702         dpsoftrast.user.depthmask = enable;
 703 }
 704 void DPSOFTRAST_DepthFunc(int comparemode)
 705 {
 706         // FIXME: validate
 707         dpsoftrast.user.depthfunc = comparemode;
 708 }
 709 void DPSOFTRAST_DepthRange(float range0, float range1)
 710 {
 711         dpsoftrast.user.depthrange[0] = range0;
 712         dpsoftrast.user.depthrange[1] = range1;
 713 }
 714 void DPSOFTRAST_PolygonOffset(float alongnormal, float intoview)
 715 {
 716         dpsoftrast.user.polygonoffset[0] = alongnormal;
 717         dpsoftrast.user.polygonoffset[1] = intoview;
 718 }
 719 void DPSOFTRAST_CullFace(int mode)
 720 {
 721         // FIXME: validate
 722         dpsoftrast.user.cullface = mode;
 723 }
 724 void DPSOFTRAST_AlphaTest(float enable)
 725 {
 726         dpsoftrast.user.alphatest = enable;
 727 }
 728 void DPSOFTRAST_AlphaFunc(int alphafunc, float alphavalue)
 729 {
 730         // FIXME: validate
 731         dpsoftrast.user.alphafunc = alphafunc;
 732         dpsoftrast.user.alphavalue = alphavalue;
 733 }
 734 void DPSOFTRAST_Color4f(float r, float g, float b, float a)
 735 {
 736         dpsoftrast.user.color[0] = r;
 737         dpsoftrast.user.color[1] = g;
 738         dpsoftrast.user.color[2] = b;
 739         dpsoftrast.user.color[3] = a;
 740 }
 741 void DPSOFTRAST_GetPixelsBGRA(int blockx, int blocky, int blockwidth, int blockheight, unsigned char *outpixels)
 742 {
 743         int outstride = blockwidth * 4;
 744         int instride = dpsoftrast.fb_width * 4;
 745         int bx1 = blockx;
 746         int by1 = blocky;
 747         int bx2 = blockx + blockwidth;
 748         int by2 = blocky + blockheight;
 749         int bw;
 750         int bh;
 751         int x;
 752         int y;
 753         unsigned char *inpixels;
 754         unsigned char *b;
 755         unsigned char *o;
 756         if (bx1 < 0) bx1 = 0;
 757         if (by1 < 0) by1 = 0;
 758         if (bx2 > dpsoftrast.fb_width) bx2 = dpsoftrast.fb_width;
 759         if (by2 > dpsoftrast.fb_height) by2 = dpsoftrast.fb_height;
 760         bw = bx2 - bx1;
 761         bh = by2 - by1;
 762         inpixels = (unsigned char *)dpsoftrast.fb_colorpixels[0];
 763         if (dpsoftrast.bigendian)
 764         {
 765                 for (y = by1;y < by2;y++)
 766                 {
 767                         b = (unsigned char *)inpixels + (dpsoftrast.fb_height - 1 - y) * instride + 4 * bx1;
 768                         o = (unsigned char *)outpixels + (y - by1) * outstride;
 769                         for (x = bx1;x < bx2;x++)
 770                         {
 771                                 o[0] = b[3];
 772                                 o[1] = b[2];
 773                                 o[2] = b[1];
 774                                 o[3] = b[0];
 775                                 o += 4;
 776                                 b += 4;
 777                         }
 778                 }
 779         }
 780         else
 781         {
 782                 for (y = by1;y < by2;y++)
 783                 {
 784                         b = (unsigned char *)inpixels + (dpsoftrast.fb_height - 1 - y) * instride + 4 * bx1;
 785                         o = (unsigned char *)outpixels + (y - by1) * outstride;
 786                         memcpy(o, b, bw*4);
 787                 }
 788         }
 789
 790 }
 791 void DPSOFTRAST_CopyRectangleToTexture(int index, int mip, int tx, int ty, int sx, int sy, int width, int height)
 792 {
 793         int tx1 = tx;
 794         int ty1 = ty;
 795         int tx2 = tx + width;
 796         int ty2 = ty + height;
 797         int sx1 = sx;
 798         int sy1 = sy;
 799         int sx2 = sx + width;
 800         int sy2 = sy + height;
 801         int swidth;
 802         int sheight;
 803         int twidth;
 804         int theight;
 805         int sw;
 806         int sh;
 807         int tw;
 808         int th;
 809         int y;
 810         unsigned int *spixels;
 811         unsigned int *tpixels;
 812         DPSOFTRAST_Texture *texture;
 813         texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
 814         if (mip < 0 || mip >= texture->mipmaps) return;
 815         spixels = dpsoftrast.fb_colorpixels[0];
 816         swidth = dpsoftrast.fb_width;
 817         sheight = dpsoftrast.fb_height;
 818         tpixels = (unsigned int *)(texture->bytes + texture->mipmap[mip][0]);
 819         twidth = texture->mipmap[mip][2];
 820         theight = texture->mipmap[mip][3];
 821         if (tx1 < 0) tx1 = 0;
 822         if (ty1 < 0) ty1 = 0;
 823         if (tx2 > twidth) tx2 = twidth;
 824         if (ty2 > theight) ty2 = theight;
 825         if (sx1 < 0) sx1 = 0;
 826         if (sy1 < 0) sy1 = 0;
 827         if (sx2 > swidth) sx2 = swidth;
 828         if (sy2 > sheight) sy2 = sheight;
 829         tw = tx2 - tx1;
 830         th = ty2 - ty1;
 831         sw = sx2 - sx1;
 832         sh = sy2 - sy1;
 833         if (tw > sw) tw = sw;
 834         if (th > sh) th = sh;
 835         if (tw < 1 || th < 1)
 836                 return;
 837         for (y = 0;y < th;y++)
 838                 memcpy(tpixels + ((ty1 + y) * twidth + tx1), spixels + ((sy1 + y) * swidth + sx1), tw*4);
 839         if (texture->mipmaps > 1)
 840                 DPSOFTRAST_Texture_CalculateMipmaps(index);
 841 }
 842 void DPSOFTRAST_SetTexture(int unitnum, int index)
 843 {
 844         DPSOFTRAST_Texture *texture;
 845         if (unitnum < 0 || unitnum >= DPSOFTRAST_MAXTEXTUREUNITS)
 846         {
 847                 dpsoftrast.errorstring = "DPSOFTRAST_SetTexture: invalid unit number";
 848                 return;
 849         }
 850         texture = DPSOFTRAST_Texture_GetByIndex(index);
 851         if (index && !texture)
 852         {
 853                 dpsoftrast.errorstring = "DPSOFTRAST_SetTexture: invalid texture handle";
 854                 return;
 855         }
 856         dpsoftrast.texbound[unitnum] = texture;
 857 }
 858
 859 void DPSOFTRAST_SetVertexPointer(const float *vertex3f, size_t stride)
 860 {
 861         dpsoftrast.pointer_vertex3f = vertex3f;
 862         dpsoftrast.stride_vertex = stride;
 863 }
 864 void DPSOFTRAST_SetColorPointer(const float *color4f, size_t stride)
 865 {
 866         dpsoftrast.pointer_color4f = color4f;
 867         dpsoftrast.pointer_color4ub = NULL;
 868         dpsoftrast.stride_color = stride;
 869 }
 870 void DPSOFTRAST_SetColorPointer4ub(const unsigned char *color4ub, size_t stride)
 871 {
 872         dpsoftrast.pointer_color4f = NULL;
 873         dpsoftrast.pointer_color4ub = color4ub;
 874         dpsoftrast.stride_color = stride;
 875 }
 876 void DPSOFTRAST_SetTexCoordPointer(int unitnum, int numcomponents, size_t stride, const float *texcoordf)
 877 {
 878         dpsoftrast.pointer_texcoordf[unitnum] = texcoordf;
 879         dpsoftrast.components_texcoord[unitnum] = numcomponents;
 880         dpsoftrast.stride_texcoord[unitnum] = stride;
 881 }
 882
 883 void DPSOFTRAST_SetShader(unsigned int mode, unsigned int permutation)
 884 {
 885         dpsoftrast.shader_mode = mode;
 886         dpsoftrast.shader_permutation = permutation;
 887 }
 888 void DPSOFTRAST_Uniform4fARB(DPSOFTRAST_UNIFORM index, float v0, float v1, float v2, float v3)
 889 {
 890         dpsoftrast.uniform4f[index*4+0] = v0;
 891         dpsoftrast.uniform4f[index*4+1] = v1;
 892         dpsoftrast.uniform4f[index*4+2] = v2;
 893         dpsoftrast.uniform4f[index*4+3] = v3;
 894 }
 895 void DPSOFTRAST_Uniform4fvARB(DPSOFTRAST_UNIFORM index, const float *v)
 896 {
 897         dpsoftrast.uniform4f[index*4+0] = v[0];
 898         dpsoftrast.uniform4f[index*4+1] = v[1];
 899         dpsoftrast.uniform4f[index*4+2] = v[2];
 900         dpsoftrast.uniform4f[index*4+3] = v[3];
 901 }
 902 void DPSOFTRAST_UniformMatrix4fvARB(DPSOFTRAST_UNIFORM index, int arraysize, int transpose, const float *v)
 903 {
 904         int i;
 905         for (i = 0;i < arraysize;i++, index += 4, v += 16)
 906         {
 907                 if (transpose)
 908                 {
 909                         dpsoftrast.uniform4f[index*4+0] = v[0];
 910                         dpsoftrast.uniform4f[index*4+1] = v[4];
 911                         dpsoftrast.uniform4f[index*4+2] = v[8];
 912                         dpsoftrast.uniform4f[index*4+3] = v[12];
 913                         dpsoftrast.uniform4f[index*4+4] = v[1];
 914                         dpsoftrast.uniform4f[index*4+5] = v[5];
 915                         dpsoftrast.uniform4f[index*4+6] = v[9];
 916                         dpsoftrast.uniform4f[index*4+7] = v[13];
 917                         dpsoftrast.uniform4f[index*4+8] = v[2];
 918                         dpsoftrast.uniform4f[index*4+9] = v[6];
 919                         dpsoftrast.uniform4f[index*4+10] = v[10];
 920                         dpsoftrast.uniform4f[index*4+11] = v[14];
 921                         dpsoftrast.uniform4f[index*4+12] = v[3];
 922                         dpsoftrast.uniform4f[index*4+13] = v[7];
 923                         dpsoftrast.uniform4f[index*4+14] = v[11];
 924                         dpsoftrast.uniform4f[index*4+15] = v[15];
 925                 }
 926                 else
 927                 {
 928                         dpsoftrast.uniform4f[index*4+0] = v[0];
 929                         dpsoftrast.uniform4f[index*4+1] = v[1];
 930                         dpsoftrast.uniform4f[index*4+2] = v[2];
 931                         dpsoftrast.uniform4f[index*4+3] = v[3];
 932                         dpsoftrast.uniform4f[index*4+4] = v[4];
 933                         dpsoftrast.uniform4f[index*4+5] = v[5];
 934                         dpsoftrast.uniform4f[index*4+6] = v[6];
 935                         dpsoftrast.uniform4f[index*4+7] = v[7];
 936                         dpsoftrast.uniform4f[index*4+8] = v[8];
 937                         dpsoftrast.uniform4f[index*4+9] = v[9];
 938                         dpsoftrast.uniform4f[index*4+10] = v[10];
 939                         dpsoftrast.uniform4f[index*4+11] = v[11];
 940                         dpsoftrast.uniform4f[index*4+12] = v[12];
 941                         dpsoftrast.uniform4f[index*4+13] = v[13];
 942                         dpsoftrast.uniform4f[index*4+14] = v[14];
 943                         dpsoftrast.uniform4f[index*4+15] = v[15];
 944                 }
 945         }
 946 }
 947 void DPSOFTRAST_Uniform1iARB(DPSOFTRAST_UNIFORM index, int i0)
 948 {
 949         dpsoftrast.uniform1i[index] = i0;
 950 }
 951
 952 void DPSOFTRAST_Draw_LoadVertices(int firstvertex, int numvertices, bool needcolors)
 953 {
 954         int i;
 955         int j;
 956         int stride;
 957         const float *v;
 958         float *p;
 959         float *data;
 960         const unsigned char *b;
 961         dpsoftrast.draw.numvertices = numvertices;
 962         if (dpsoftrast.draw.maxvertices < dpsoftrast.draw.numvertices)
 963         {
 964                 if (dpsoftrast.draw.maxvertices < 4096)
 965                         dpsoftrast.draw.maxvertices = 4096;
 966                 while (dpsoftrast.draw.maxvertices < dpsoftrast.draw.numvertices)
 967                         dpsoftrast.draw.maxvertices *= 2;
 968                 if (dpsoftrast.draw.in_array4f[0])
 969                         MM_FREE(dpsoftrast.draw.in_array4f[0]);
 970                 data = (float *)MM_CALLOC(1, dpsoftrast.draw.maxvertices * sizeof(float[4])*(DPSOFTRAST_ARRAY_TOTAL*2 + 1));
 971                 for (i = 0;i < DPSOFTRAST_ARRAY_TOTAL;i++, data += dpsoftrast.draw.maxvertices * 4)
 972                         dpsoftrast.draw.in_array4f[i] = data;
 973                 for (i = 0;i < DPSOFTRAST_ARRAY_TOTAL;i++, data += dpsoftrast.draw.maxvertices * 4)
 974                         dpsoftrast.draw.post_array4f[i] = data;
 975                 dpsoftrast.draw.screencoord4f = data;
 976                 data += dpsoftrast.draw.maxvertices * 4;
 977         }
 978         stride = dpsoftrast.stride_vertex;
 979         v = (const float *)((unsigned char *)dpsoftrast.pointer_vertex3f + firstvertex * stride);
 980         p = dpsoftrast.draw.in_array4f[0];
 981         for (i = 0;i < numvertices;i++)
 982         {
 983                 p[0] = v[0];
 984                 p[1] = v[1];
 985                 p[2] = v[2];
 986                 p[3] = 1.0f;
 987                 p += 4;
 988                 v = (const float *)((const unsigned char *)v + stride);
 989         }
 990         if (needcolors)
 991         {
 992                 if (dpsoftrast.pointer_color4f)
 993                 {
 994                         stride = dpsoftrast.stride_color;
 995                         v = (const float *)((const unsigned char *)dpsoftrast.pointer_color4f + firstvertex * stride);
 996                         p = dpsoftrast.draw.in_array4f[1];
 997                         for (i = 0;i < numvertices;i++)
 998                         {
 999                                 p[0] = v[0];
1000                                 p[1] = v[1];
1001                                 p[2] = v[2];
1002                                 p[3] = v[3];
1003                                 p += 4;
1004                                 v = (const float *)((const unsigned char *)v + stride);
1005                         }
1006                 }
1007                 else if (dpsoftrast.pointer_color4ub)
1008                 {
1009                         stride = dpsoftrast.stride_color;
1010                         b = (const unsigned char *)((const unsigned char *)dpsoftrast.pointer_color4ub + firstvertex * stride);
1011                         p = dpsoftrast.draw.in_array4f[1];
1012                         for (i = 0;i < numvertices;i++)
1013                         {
1014                                 p[0] = b[0] * (1.0f / 255.0f);
1015                                 p[1] = b[1] * (1.0f / 255.0f);
1016                                 p[2] = b[2] * (1.0f / 255.0f);
1017                                 p[3] = b[3] * (1.0f / 255.0f);
1018                                 p += 4;
1019                                 b = (const unsigned char *)((const unsigned char *)b + stride);
1020                         }
1021                 }
1022                 else
1023                 {
1024                         v = dpsoftrast.user.color;
1025                         p = dpsoftrast.draw.in_array4f[1];
1026                         for (i = 0;i < numvertices;i++)
1027                         {
1028                                 p[0] = v[0];
1029                                 p[1] = v[1];
1030                                 p[2] = v[2];
1031                                 p[3] = v[3];
1032                                 p += 4;
1033                         }
1034                 }
1035         }
1036         for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL-2;j++)
1037         {
1038                 if (dpsoftrast.pointer_texcoordf[j])
1039                 {
1040                         stride = dpsoftrast.stride_texcoord[j];
1041                         v = (const float *)((const unsigned char *)dpsoftrast.pointer_texcoordf[j] + firstvertex * stride);
1042                         p = dpsoftrast.draw.in_array4f[j+2];
1043                         switch(dpsoftrast.components_texcoord[j])
1044                         {
1045                         case 2:
1046                                 for (i = 0;i < numvertices;i++)
1047                                 {
1048                                         p[0] = v[0];
1049                                         p[1] = v[1];
1050                                         p[2] = 0.0f;
1051                                         p[3] = 1.0f;
1052                                         p += 4;
1053                                         v = (const float *)((const unsigned char *)v + stride);
1054                                 }
1055                                 break;
1056                         case 3:
1057                                 for (i = 0;i < numvertices;i++)
1058                                 {
1059                                         p[0] = v[0];
1060                                         p[1] = v[1];
1061                                         p[2] = v[2];
1062                                         p[3] = 1.0f;
1063                                         p += 4;
1064                                         v = (const float *)((const unsigned char *)v + stride);
1065                                 }
1066                                 break;
1067                         case 4:
1068                                 for (i = 0;i < numvertices;i++)
1069                                 {
1070                                         p[0] = v[0];
1071                                         p[1] = v[1];
1072                                         p[2] = v[2];
1073                                         p[3] = v[3];
1074                                         p += 4;
1075                                         v = (const float *)((const unsigned char *)v + stride);
1076                                 }
1077                                 break;
1078                         }
1079                 }
1080         }
1081 }
1082
1083 void DPSOFTRAST_Array_Transform(float *out4f, const float *in4f, int numitems, const float *inmatrix16f)
1084 {
1085         static const float identitymatrix[4][4] = {{1,0,0,0},{0,1,0,0},{0,0,1,0},{0,0,0,1}};
1086         // TODO: SIMD
1087         float matrix[4][4];
1088         int i;
1089         memcpy(matrix, inmatrix16f, sizeof(float[16]));
1090         if (!memcmp(identitymatrix, matrix, sizeof(float[16])))
1091         {
1092                 // fast case for identity matrix
1093                 memcpy(out4f, in4f, numitems * sizeof(float[4]));
1094                 return;
1095         }
1096         for (i = 0;i < numitems;i++, out4f += 4, in4f += 4)
1097         {
1098                 out4f[0] = in4f[0] * matrix[0][0] + in4f[1] * matrix[1][0] + in4f[2] * matrix[2][0] + in4f[3] * matrix[3][0];
1099                 out4f[1] = in4f[0] * matrix[0][1] + in4f[1] * matrix[1][1] + in4f[2] * matrix[2][1] + in4f[3] * matrix[3][1];
1100                 out4f[2] = in4f[0] * matrix[0][2] + in4f[1] * matrix[1][2] + in4f[2] * matrix[2][2] + in4f[3] * matrix[3][2];
1101                 out4f[3] = in4f[0] * matrix[0][3] + in4f[1] * matrix[1][3] + in4f[2] * matrix[2][3] + in4f[3] * matrix[3][3];
1102         }
1103 }
1104
1105 void DPSOFTRAST_Array_Copy(float *out4f, const float *in4f, int numitems)
1106 {
1107         memcpy(out4f, in4f, numitems * sizeof(float[4]));
1108 }
1109
1110 void DPSOFTRAST_Draw_ProjectVertices(float *out4f, const float *in4f, int numitems)
1111 {
1112         // NOTE: this is used both as a whole mesh transform function and a
1113         // per-triangle transform function (for clipped triangles), accordingly
1114         // it should not crash on divide by 0 but the result of divide by 0 is
1115         // unimportant...
1116         // TODO: SIMD
1117         int i;
1118         float w;
1119         float viewportcenter[4];
1120         float viewportscale[4];
1121         viewportscale[0] = dpsoftrast.fb_viewportscale[0];
1122         viewportscale[1] = dpsoftrast.fb_viewportscale[1];
1123         viewportscale[2] = 0.5f;
1124         viewportscale[3] = 0.0f;
1125         viewportcenter[0] = dpsoftrast.fb_viewportcenter[0];
1126         viewportcenter[1] = dpsoftrast.fb_viewportcenter[1];
1127         viewportcenter[2] = 0.5f;
1128         viewportcenter[3] = 0.0f;
1129         for (i = 0;i < numitems;i++)
1130         {
1131                 if (!in4f[3])
1132                 {
1133                         out4f[0] = 0.0f;
1134                         out4f[1] = 0.0f;
1135                         out4f[2] = 0.0f;
1136                         out4f[3] = 0.0f;
1137                         continue;
1138                 }
1139                 w = 1.0f / in4f[3];
1140                 out4f[0] = viewportcenter[0] + viewportscale[0] * in4f[0] * w;
1141                 out4f[1] = viewportcenter[1] + viewportscale[1] * in4f[1] * w;
1142                 out4f[2] = viewportcenter[2] + viewportscale[2] * in4f[2] * w;
1143                 out4f[3] = viewportcenter[3] + viewportscale[3] * in4f[3] * w;
1144                 out4f[3] = w;
1145                 in4f += 4;
1146                 out4f += 4;
1147         }
1148 }
1149
1150 void DPSOFTRAST_Draw_DebugEdgePoints(const float *screen0, const float *screen1)
1151 {
1152         int i;
1153         int x;
1154         int y;
1155         int w = dpsoftrast.fb_width;
1156         int bounds[4];
1157         float v0[2], v1[2];
1158         unsigned int *pixels = dpsoftrast.fb_colorpixels[0];
1159         //const float *c4f;
1160         bounds[0] = dpsoftrast.fb_viewportscissor[0];
1161         bounds[1] = dpsoftrast.fb_viewportscissor[1];
1162         bounds[2] = dpsoftrast.fb_viewportscissor[0] + dpsoftrast.fb_viewportscissor[2];
1163         bounds[3] = dpsoftrast.fb_viewportscissor[1] + dpsoftrast.fb_viewportscissor[3];
1164         v0[0] = screen0[0];
1165         v0[1] = screen0[1];
1166         v1[0] = screen1[0];
1167         v1[1] = screen1[1];
1168         for (i = 0;i <= 128;i++)
1169         {
1170                 // check nearclip
1171                 //if (dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+3] != 1.0f)
1172                 //      continue;
1173                 x = (int)(v0[0] + (v1[0] - v0[0]) * (i/128.0f));
1174                 y = (int)(v0[1] + (v1[1] - v0[1]) * (i/128.0f));
1175                 if (x < bounds[0] || y < bounds[1] || x >= bounds[2] || y >= bounds[3])
1176                         continue;
1177                 //c4f = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR] + element0*4;
1178                 //pixels[y*w+x] = DPSOFTRAST_BGRA8_FROM_RGBA32F(c4f[0], c4f[1], c4f[2], c4f[3]);
1179                 pixels[y*w+x] = 0xFFFFFFFF;
1180         }
1181 }
1182
1183 void DPSOFTRAST_Draw_Span_Begin(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *zf)
1184 {
1185         int x;
1186         int startx = span->startx;
1187         int endx = span->endx;
1188         float w = span->data[0][DPSOFTRAST_ARRAY_TOTAL][3];
1189         float wslope = span->data[1][DPSOFTRAST_ARRAY_TOTAL][3];
1190         float endz = 1.0f / (w + wslope * startx);
1191         for (x = startx;x < endx;)
1192         {
1193                 int nextsub = x + DPSOFTRAST_MAXSUBSPAN, endsub = nextsub - 1;
1194                 float z = endz, dz;
1195                 if(nextsub >= endx) nextsub = endsub = endx-1;
1196                 endz = 1.0f / (w + wslope * nextsub);
1197                 dz = x < nextsub ? (endz - z) / (nextsub - x) : 0.0f;
1198                 for (; x <= endsub; x++, z += dz)
1199                         zf[x] = z;
1200         }
1201 }
1202
1203 void DPSOFTRAST_Draw_Span_Finish(const DPSOFTRAST_State_Draw_Span * RESTRICT span, const float * RESTRICT in4f)
1204 {
1205         int x;
1206         int startx = span->startx;
1207         int endx = span->endx;
1208         int d[4];
1209         float a, b;
1210         unsigned char * RESTRICT pixelmask = span->pixelmask;
1211         unsigned char * RESTRICT pixel = (unsigned char *)dpsoftrast.fb_colorpixels[0];
1212         if (!pixel)
1213                 return;
1214         pixel += span->start * 4;
1215         // handle alphatest now (this affects depth writes too)
1216         if (dpsoftrast.user.alphatest)
1217                 for (x = startx;x < endx;x++)
1218                         if (in4f[x*4+3] < 0.5f)
1219                                 pixelmask[x] = false;
1220         // FIXME: this does not handle bigendian
1221         switch(dpsoftrast.fb_blendmode)
1222         {
1223         case DPSOFTRAST_BLENDMODE_OPAQUE:
1224                 for (x = startx;x < endx;x++)
1225                 {
1226                         if (!pixelmask[x])
1227                                 continue;
1228                         d[0] = (int)(in4f[x*4+2]*255.0f);if (d[0] > 255) d[0] = 255;
1229                         d[1] = (int)(in4f[x*4+1]*255.0f);if (d[1] > 255) d[1] = 255;
1230                         d[2] = (int)(in4f[x*4+0]*255.0f);if (d[2] > 255) d[2] = 255;
1231                         d[3] = (int)(in4f[x*4+3]*255.0f);if (d[3] > 255) d[3] = 255;
1232                         pixel[x*4+0] = d[0];
1233                         pixel[x*4+1] = d[1];
1234                         pixel[x*4+2] = d[2];
1235                         pixel[x*4+3] = d[3];
1236                 }
1237                 break;
1238         case DPSOFTRAST_BLENDMODE_ALPHA:
1239                 for (x = startx;x < endx;x++)
1240                 {
1241                         if (!pixelmask[x])
1242                                 continue;
1243                         a = in4f[x*4+3] * 255.0f;
1244                         b = 1.0f - in4f[x*4+3];
1245                         d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]*b);if (d[0] > 255) d[0] = 255;
1246                         d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]*b);if (d[1] > 255) d[1] = 255;
1247                         d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]*b);if (d[2] > 255) d[2] = 255;
1248                         d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]*b);if (d[3] > 255) d[3] = 255;
1249                         pixel[x*4+0] = d[0];
1250                         pixel[x*4+1] = d[1];
1251                         pixel[x*4+2] = d[2];
1252                         pixel[x*4+3] = d[3];
1253                 }
1254                 break;
1255         case DPSOFTRAST_BLENDMODE_ADDALPHA:
1256                 for (x = startx;x < endx;x++)
1257                 {
1258                         if (!pixelmask[x])
1259                                 continue;
1260                         a = in4f[x*4+3] * 255.0f;
1261                         d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1262                         d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1263                         d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1264                         d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1265                         pixel[x*4+0] = d[0];
1266                         pixel[x*4+1] = d[1];
1267                         pixel[x*4+2] = d[2];
1268                         pixel[x*4+3] = d[3];
1269                 }
1270                 break;
1271         case DPSOFTRAST_BLENDMODE_ADD:
1272                 for (x = startx;x < endx;x++)
1273                 {
1274                         if (!pixelmask[x])
1275                                 continue;
1276                         d[0] = (int)(in4f[x*4+2]*255.0f+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1277                         d[1] = (int)(in4f[x*4+1]*255.0f+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1278                         d[2] = (int)(in4f[x*4+0]*255.0f+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1279                         d[3] = (int)(in4f[x*4+3]*255.0f+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1280                         pixel[x*4+0] = d[0];
1281                         pixel[x*4+1] = d[1];
1282                         pixel[x*4+2] = d[2];
1283                         pixel[x*4+3] = d[3];
1284                 }
1285                 break;
1286         case DPSOFTRAST_BLENDMODE_INVMOD:
1287                 for (x = startx;x < endx;x++)
1288                 {
1289                         if (!pixelmask[x])
1290                                 continue;
1291                         d[0] = (int)((1.0f-in4f[x*4+2])*pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1292                         d[1] = (int)((1.0f-in4f[x*4+1])*pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1293                         d[2] = (int)((1.0f-in4f[x*4+0])*pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1294                         d[3] = (int)((1.0f-in4f[x*4+3])*pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1295                         pixel[x*4+0] = d[0];
1296                         pixel[x*4+1] = d[1];
1297                         pixel[x*4+2] = d[2];
1298                         pixel[x*4+3] = d[3];
1299                 }
1300                 break;
1301         case DPSOFTRAST_BLENDMODE_MUL:
1302                 for (x = startx;x < endx;x++)
1303                 {
1304                         if (!pixelmask[x])
1305                                 continue;
1306                         d[0] = (int)(in4f[x*4+2]*pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1307                         d[1] = (int)(in4f[x*4+1]*pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1308                         d[2] = (int)(in4f[x*4+0]*pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1309                         d[3] = (int)(in4f[x*4+3]*pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1310                         pixel[x*4+0] = d[0];
1311                         pixel[x*4+1] = d[1];
1312                         pixel[x*4+2] = d[2];
1313                         pixel[x*4+3] = d[3];
1314                 }
1315                 break;
1316         case DPSOFTRAST_BLENDMODE_MUL2:
1317                 for (x = startx;x < endx;x++)
1318                 {
1319                         if (!pixelmask[x])
1320                                 continue;
1321                         d[0] = (int)(in4f[x*4+2]*pixel[x*4+0]*2.0f);if (d[0] > 255) d[0] = 255;
1322                         d[1] = (int)(in4f[x*4+1]*pixel[x*4+1]*2.0f);if (d[1] > 255) d[1] = 255;
1323                         d[2] = (int)(in4f[x*4+0]*pixel[x*4+2]*2.0f);if (d[2] > 255) d[2] = 255;
1324                         d[3] = (int)(in4f[x*4+3]*pixel[x*4+3]*2.0f);if (d[3] > 255) d[3] = 255;
1325                         pixel[x*4+0] = d[0];
1326                         pixel[x*4+1] = d[1];
1327                         pixel[x*4+2] = d[2];
1328                         pixel[x*4+3] = d[3];
1329                 }
1330                 break;
1331         case DPSOFTRAST_BLENDMODE_SUBALPHA:
1332                 for (x = startx;x < endx;x++)
1333                 {
1334                         if (!pixelmask[x])
1335                                 continue;
1336                         a = in4f[x*4+3] * -255.0f;
1337                         d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;if (d[0] < 0) d[0] = 0;
1338                         d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;if (d[1] < 0) d[1] = 0;
1339                         d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;if (d[2] < 0) d[2] = 0;
1340                         d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;if (d[3] < 0) d[3] = 0;
1341                         pixel[x*4+0] = d[0];
1342                         pixel[x*4+1] = d[1];
1343                         pixel[x*4+2] = d[2];
1344                         pixel[x*4+3] = d[3];
1345                 }
1346                 break;
1347         case DPSOFTRAST_BLENDMODE_PSEUDOALPHA:
1348                 for (x = startx;x < endx;x++)
1349                 {
1350                         if (!pixelmask[x])
1351                                 continue;
1352                         a = 255.0f;
1353                         b = 1.0f - in4f[x*4+3];
1354                         d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]*b);if (d[0] > 255) d[0] = 255;
1355                         d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]*b);if (d[1] > 255) d[1] = 255;
1356                         d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]*b);if (d[2] > 255) d[2] = 255;
1357                         d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]*b);if (d[3] > 255) d[3] = 255;
1358                         pixel[x*4+0] = d[0];
1359                         pixel[x*4+1] = d[1];
1360                         pixel[x*4+2] = d[2];
1361                         pixel[x*4+3] = d[3];
1362                 }
1363                 break;
1364         }
1365 }
1366
1367 void DPSOFTRAST_Draw_Span_FinishBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, const unsigned char* RESTRICT in4ub)
1368 {
1369         int x;
1370         int startx = span->startx;
1371         int endx = span->endx;
1372         int d[4];
1373         const unsigned int * RESTRICT ini = (const unsigned int *)in4ub;
1374         int a, b;
1375         unsigned char * RESTRICT pixelmask = span->pixelmask;
1376         unsigned char * RESTRICT pixel = (unsigned char *)dpsoftrast.fb_colorpixels[0];
1377         unsigned int * RESTRICT pixeli = (unsigned int *)dpsoftrast.fb_colorpixels[0];
1378         if (!pixel)
1379                 return;
1380         pixel += span->start * 4;
1381         pixeli += span->start;
1382         // handle alphatest now (this affects depth writes too)
1383         if (dpsoftrast.user.alphatest)
1384                 for (x = startx;x < endx;x++)
1385                         if (in4ub[x*4+3] < 0.5f)
1386                                 pixelmask[x] = false;
1387         // FIXME: this does not handle bigendian
1388         switch(dpsoftrast.fb_blendmode)
1389         {
1390         case DPSOFTRAST_BLENDMODE_OPAQUE:
1391                 for (x = startx;x < endx;x++)
1392                         if (pixelmask[x])
1393                                 pixeli[x] = ini[x];
1394                 break;
1395         case DPSOFTRAST_BLENDMODE_ALPHA:
1396                 for (x = startx;x < endx;x++)
1397                 {
1398                         if (!pixelmask[x])
1399                                 continue;
1400                         a = in4ub[x*4+3];
1401                         b = 256 - in4ub[x*4+3];
1402                         pixel[x*4+0] = (in4ub[x*4+0]*a+pixel[x*4+0]*b) >> 8;
1403                         pixel[x*4+1] = (in4ub[x*4+1]*a+pixel[x*4+1]*b) >> 8;
1404                         pixel[x*4+2] = (in4ub[x*4+2]*a+pixel[x*4+2]*b) >> 8;
1405                         pixel[x*4+3] = (in4ub[x*4+3]*a+pixel[x*4+3]*b) >> 8;
1406                 }
1407                 break;
1408         case DPSOFTRAST_BLENDMODE_ADDALPHA:
1409                 for (x = startx;x < endx;x++)
1410                 {
1411                         if (!pixelmask[x])
1412                                 continue;
1413                         a = in4ub[x*4+3];
1414                         d[0] = (((in4ub[x*4+0]*a)>>8)+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1415                         d[1] = (((in4ub[x*4+1]*a)>>8)+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1416                         d[2] = (((in4ub[x*4+2]*a)>>8)+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1417                         d[3] = (((in4ub[x*4+3]*a)>>8)+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1418                         pixel[x*4+0] = d[0];
1419                         pixel[x*4+1] = d[1];
1420                         pixel[x*4+2] = d[2];
1421                         pixel[x*4+3] = d[3];
1422                 }
1423                 break;
1424         case DPSOFTRAST_BLENDMODE_ADD:
1425                 for (x = startx;x < endx;x++)
1426                 {
1427                         if (!pixelmask[x])
1428                                 continue;
1429                         d[0] = (in4ub[x*4+0]+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1430                         d[1] = (in4ub[x*4+1]+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1431                         d[2] = (in4ub[x*4+2]+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1432                         d[3] = (in4ub[x*4+3]+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1433                         pixel[x*4+0] = d[0];
1434                         pixel[x*4+1] = d[1];
1435                         pixel[x*4+2] = d[2];
1436                         pixel[x*4+3] = d[3];
1437                 }
1438                 break;
1439         case DPSOFTRAST_BLENDMODE_INVMOD:
1440                 for (x = startx;x < endx;x++)
1441                 {
1442                         if (!pixelmask[x])
1443                                 continue;
1444                         pixel[x*4+0] = ((255-in4ub[x*4+0])*pixel[x*4+0])>>8;
1445                         pixel[x*4+1] = ((255-in4ub[x*4+1])*pixel[x*4+1])>>8;
1446                         pixel[x*4+2] = ((255-in4ub[x*4+2])*pixel[x*4+2])>>8;
1447                         pixel[x*4+3] = ((255-in4ub[x*4+3])*pixel[x*4+3])>>8;
1448                 }
1449                 break;
1450         case DPSOFTRAST_BLENDMODE_MUL:
1451                 for (x = startx;x < endx;x++)
1452                 {
1453                         if (!pixelmask[x])
1454                                 continue;
1455                         pixel[x*4+0] = (in4ub[x*4+0]*pixel[x*4+0])>>8;
1456                         pixel[x*4+1] = (in4ub[x*4+1]*pixel[x*4+1])>>8;
1457                         pixel[x*4+2] = (in4ub[x*4+2]*pixel[x*4+2])>>8;
1458                         pixel[x*4+3] = (in4ub[x*4+3]*pixel[x*4+3])>>8;
1459                 }
1460                 break;
1461         case DPSOFTRAST_BLENDMODE_MUL2:
1462                 for (x = startx;x < endx;x++)
1463                 {
1464                         if (!pixelmask[x])
1465                                 continue;
1466                         d[0] = (in4ub[x*4+0]*pixel[x*4+0])>>7;if (d[0] > 255) d[0] = 255;
1467                         d[1] = (in4ub[x*4+1]*pixel[x*4+1])>>7;if (d[1] > 255) d[1] = 255;
1468                         d[2] = (in4ub[x*4+2]*pixel[x*4+2])>>7;if (d[2] > 255) d[2] = 255;
1469                         d[3] = (in4ub[x*4+3]*pixel[x*4+3])>>7;if (d[3] > 255) d[3] = 255;
1470                         pixel[x*4+0] = d[0];
1471                         pixel[x*4+1] = d[1];
1472                         pixel[x*4+2] = d[2];
1473                         pixel[x*4+3] = d[3];
1474                 }
1475                 break;
1476         case DPSOFTRAST_BLENDMODE_SUBALPHA:
1477                 for (x = startx;x < endx;x++)
1478                 {
1479                         if (!pixelmask[x])
1480                                 continue;
1481                         a = in4ub[x*4+3];
1482                         d[0] = pixel[x*4+0]-((in4ub[x*4+0]*a)>>8);if (d[0] < 0) d[0] = 0;
1483                         d[1] = pixel[x*4+1]-((in4ub[x*4+1]*a)>>8);if (d[1] < 0) d[1] = 0;
1484                         d[2] = pixel[x*4+2]-((in4ub[x*4+2]*a)>>8);if (d[2] < 0) d[2] = 0;
1485                         d[3] = pixel[x*4+3]-((in4ub[x*4+3]*a)>>8);if (d[3] < 0) d[3] = 0;
1486                         pixel[x*4+0] = d[0];
1487                         pixel[x*4+1] = d[1];
1488                         pixel[x*4+2] = d[2];
1489                         pixel[x*4+3] = d[3];
1490                 }
1491                 break;
1492         case DPSOFTRAST_BLENDMODE_PSEUDOALPHA:
1493                 for (x = startx;x < endx;x++)
1494                 {
1495                         if (!pixelmask[x])
1496                                 continue;
1497                         b = 255 - in4ub[x*4+3];
1498                         d[0] = in4ub[x*4+0]+((pixel[x*4+0]*b)>>8);if (d[0] > 255) d[0] = 255;
1499                         d[1] = in4ub[x*4+1]+((pixel[x*4+1]*b)>>8);if (d[1] > 255) d[1] = 255;
1500                         d[2] = in4ub[x*4+2]+((pixel[x*4+2]*b)>>8);if (d[2] > 255) d[2] = 255;
1501                         d[3] = in4ub[x*4+3]+((pixel[x*4+3]*b)>>8);if (d[3] > 255) d[3] = 255;
1502                         pixel[x*4+0] = d[0];
1503                         pixel[x*4+1] = d[1];
1504                         pixel[x*4+2] = d[2];
1505                         pixel[x*4+3] = d[3];
1506                 }
1507                 break;
1508         }
1509 }
1510
1511 void DPSOFTRAST_Draw_Span_Texture2DVarying(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float * RESTRICT out4f, int texunitindex, int arrayindex, const float * RESTRICT zf)
1512 {
1513         int x;
1514         int startx = span->startx;
1515         int endx = span->endx;
1516         int flags;
1517         float c[4];
1518         float data[4];
1519         float slope[4];
1520         float tc[2], endtc[2];
1521         float tcscale[2];
1522         unsigned int tci[2];
1523         unsigned int tci1[2];
1524         unsigned int tcimin[2];
1525         unsigned int tcimax[2];
1526         int tciwrapmask[2];
1527         int tciwidth;
1528         int filter;
1529         int mip;
1530         const unsigned char * RESTRICT pixelbase;
1531         const unsigned char * RESTRICT pixel[4];
1532         DPSOFTRAST_Texture *texture = dpsoftrast.texbound[texunitindex];
1533         // if no texture is bound, just fill it with white
1534         if (!texture)
1535         {
1536                 for (x = startx;x < endx;x++)
1537                 {
1538                         out4f[x*4+0] = 1.0f;
1539                         out4f[x*4+1] = 1.0f;
1540                         out4f[x*4+2] = 1.0f;
1541                         out4f[x*4+3] = 1.0f;
1542                 }
1543                 return;
1544         }
1545         mip = span->mip[texunitindex];
1546         // if this mipmap of the texture is 1 pixel, just fill it with that color
1547         if (texture->mipmap[mip][1] == 4)
1548         {
1549                 c[0] = texture->bytes[2] * (1.0f/255.0f);
1550                 c[1] = texture->bytes[1] * (1.0f/255.0f);
1551                 c[2] = texture->bytes[0] * (1.0f/255.0f);
1552                 c[3] = texture->bytes[3] * (1.0f/255.0f);
1553                 for (x = startx;x < endx;x++)
1554                 {
1555                         out4f[x*4+0] = c[0];
1556                         out4f[x*4+1] = c[1];
1557                         out4f[x*4+2] = c[2];
1558                         out4f[x*4+3] = c[3];
1559                 }
1560                 return;
1561         }
1562         filter = texture->filter & DPSOFTRAST_TEXTURE_FILTER_LINEAR;
1563         data[0] = span->data[0][arrayindex][0];
1564         data[1] = span->data[0][arrayindex][1];
1565         data[2] = span->data[0][arrayindex][2];
1566         data[3] = span->data[0][arrayindex][3];
1567         slope[0] = span->data[1][arrayindex][0];
1568         slope[1] = span->data[1][arrayindex][1];
1569         slope[2] = span->data[1][arrayindex][2];
1570         slope[3] = span->data[1][arrayindex][3];
1571         flags = texture->flags;
1572         pixelbase = (unsigned char *)texture->bytes + texture->mipmap[mip][0];
1573         tcscale[0] = texture->mipmap[mip][2];
1574         tcscale[1] = texture->mipmap[mip][3];
1575         tciwidth = texture->mipmap[mip][2];
1576         tcimin[0] = 0;
1577         tcimin[1] = 0;
1578         tcimax[0] = texture->mipmap[mip][2]-1;
1579         tcimax[1] = texture->mipmap[mip][3]-1;
1580         tciwrapmask[0] = texture->mipmap[mip][2]-1;
1581         tciwrapmask[1] = texture->mipmap[mip][3]-1;
1582         endtc[0] = (data[0] + slope[0]*startx) * zf[startx] * tcscale[0] - 0.5f;
1583         endtc[1] = (data[1] + slope[1]*startx) * zf[startx] * tcscale[1] - 0.5f;
1584         for (x = startx;x < endx;)
1585         {
1586                 unsigned int subtc[2];
1587                 unsigned int substep[2];
1588                 float subscale = 65536.0f/DPSOFTRAST_MAXSUBSPAN;
1589                 int nextsub = x + DPSOFTRAST_MAXSUBSPAN, endsub = nextsub - 1;
1590                 if(nextsub >= endx)
1591                 {
1592                         nextsub = endsub = endx-1;
1593                         if(x < nextsub) subscale = 65536.0f / (nextsub - x);
1594                 }
1595                 tc[0] = endtc[0];
1596                 tc[1] = endtc[1];
1597                 endtc[0] = (data[0] + slope[0]*nextsub) * zf[nextsub] * tcscale[0] - 0.5f;
1598                 endtc[1] = (data[1] + slope[1]*nextsub) * zf[nextsub] * tcscale[1] - 0.5f;
1599                 substep[0] = (endtc[0] - tc[0]) * subscale;
1600                 substep[1] = (endtc[1] - tc[1]) * subscale;
1601                 subtc[0] = tc[0] * (1<<16);
1602                 subtc[1] = tc[1] * (1<<16);
1603                 if(filter)
1604                 {
1605                         if (flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE)
1606                         {
1607                                 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1608                                 {
1609                                         unsigned int frac[2] = { subtc[0]&0xFFF, subtc[1]&0xFFF };
1610                                         unsigned int ifrac[2] = { 0x1000 - frac[0], 0x1000 - frac[1] };
1611                                         unsigned int lerp[4] = { ifrac[0]*ifrac[1], frac[0]*ifrac[1], ifrac[0]*frac[1], frac[0]*frac[1] };
1612                                         tci[0] = subtc[0]>>16;
1613                                         tci[1] = subtc[1]>>16;
1614                                         tci1[0] = tci[0] + 1;
1615                                         tci1[1] = tci[1] + 1;
1616                                         tci[0] = tci[0] >= tcimin[0] ? (tci[0] <= tcimax[0] ? tci[0] : tcimax[0]) : tcimin[0];
1617                                         tci[1] = tci[1] >= tcimin[1] ? (tci[1] <= tcimax[1] ? tci[1] : tcimax[1]) : tcimin[1];
1618                                         tci1[0] = tci1[0] >= tcimin[0] ? (tci1[0] <= tcimax[0] ? tci1[0] : tcimax[0]) : tcimin[0];
1619                                         tci1[1] = tci1[1] >= tcimin[1] ? (tci1[1] <= tcimax[1] ? tci1[1] : tcimax[1]) : tcimin[1];
1620                                         pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1621                                         pixel[1] = pixelbase + 4 * (tci[1]*tciwidth+tci1[0]);
1622                                         pixel[2] = pixelbase + 4 * (tci1[1]*tciwidth+tci[0]);
1623                                         pixel[3] = pixelbase + 4 * (tci1[1]*tciwidth+tci1[0]);
1624                                         c[0] = (pixel[0][2]*lerp[0]+pixel[1][2]*lerp[1]+pixel[2][2]*lerp[2]+pixel[3][2]*lerp[3]) * (1.0f / 0xFF000000);
1625                                         c[1] = (pixel[0][1]*lerp[0]+pixel[1][1]*lerp[1]+pixel[2][1]*lerp[2]+pixel[3][1]*lerp[3]) * (1.0f / 0xFF000000);
1626                                         c[2] = (pixel[0][0]*lerp[0]+pixel[1][0]*lerp[1]+pixel[2][0]*lerp[2]+pixel[3][0]*lerp[3]) * (1.0f / 0xFF000000);
1627                                         c[3] = (pixel[0][3]*lerp[0]+pixel[1][3]*lerp[1]+pixel[2][3]*lerp[2]+pixel[3][3]*lerp[3]) * (1.0f / 0xFF000000);
1628                                         out4f[x*4+0] = c[0];
1629                                         out4f[x*4+1] = c[1];
1630                                         out4f[x*4+2] = c[2];
1631                                         out4f[x*4+3] = c[3];
1632                                 }
1633                         }
1634                         else
1635                         {
1636                                 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1637                                 {
1638                                         unsigned int frac[2] = { subtc[0]&0xFFF, subtc[1]&0xFFF };
1639                                         unsigned int ifrac[2] = { 0x1000 - frac[0], 0x1000 - frac[1] };
1640                                         unsigned int lerp[4] = { ifrac[0]*ifrac[1], frac[0]*ifrac[1], ifrac[0]*frac[1], frac[0]*frac[1] };
1641                                         tci[0] = subtc[0]>>16;
1642                                         tci[1] = subtc[1]>>16;
1643                                         tci1[0] = tci[0] + 1;
1644                                         tci1[1] = tci[1] + 1;
1645                                         tci[0] &= tciwrapmask[0];
1646                                         tci[1] &= tciwrapmask[1];
1647                                         tci1[0] &= tciwrapmask[0];
1648                                         tci1[1] &= tciwrapmask[1];
1649                                         pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1650                                         pixel[1] = pixelbase + 4 * (tci[1]*tciwidth+tci1[0]);
1651                                         pixel[2] = pixelbase + 4 * (tci1[1]*tciwidth+tci[0]);
1652                                         pixel[3] = pixelbase + 4 * (tci1[1]*tciwidth+tci1[0]);
1653                                         c[0] = (pixel[0][2]*lerp[0]+pixel[1][2]*lerp[1]+pixel[2][2]*lerp[2]+pixel[3][2]*lerp[3]) * (1.0f / 0xFF000000);
1654                                         c[1] = (pixel[0][1]*lerp[0]+pixel[1][1]*lerp[1]+pixel[2][1]*lerp[2]+pixel[3][1]*lerp[3]) * (1.0f / 0xFF000000);
1655                                         c[2] = (pixel[0][0]*lerp[0]+pixel[1][0]*lerp[1]+pixel[2][0]*lerp[2]+pixel[3][0]*lerp[3]) * (1.0f / 0xFF000000);
1656                                         c[3] = (pixel[0][3]*lerp[0]+pixel[1][3]*lerp[1]+pixel[2][3]*lerp[2]+pixel[3][3]*lerp[3]) * (1.0f / 0xFF000000);
1657                                         out4f[x*4+0] = c[0];
1658                                         out4f[x*4+1] = c[1];
1659                                         out4f[x*4+2] = c[2];
1660                                         out4f[x*4+3] = c[3];
1661                                 }
1662                         }
1663                 }
1664                 else if (flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE)
1665                 {
1666                         for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1667                         {
1668                                 tci[0] = subtc[0]>>16;
1669                                 tci[1] = subtc[1]>>16;
1670                                 tci[0] = tci[0] >= tcimin[0] ? (tci[0] <= tcimax[0] ? tci[0] : tcimax[0]) : tcimin[0];
1671                                 tci[1] = tci[1] >= tcimin[1] ? (tci[1] <= tcimax[1] ? tci[1] : tcimax[1]) : tcimin[1];
1672                                 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1673                                 c[0] = pixel[0][2] * (1.0f / 255.0f);
1674                                 c[1] = pixel[0][1] * (1.0f / 255.0f);
1675                                 c[2] = pixel[0][0] * (1.0f / 255.0f);
1676                                 c[3] = pixel[0][3] * (1.0f / 255.0f);
1677                                 out4f[x*4+0] = c[0];
1678                                 out4f[x*4+1] = c[1];
1679                                 out4f[x*4+2] = c[2];
1680                                 out4f[x*4+3] = c[3];
1681                         }
1682                 }
1683                 else
1684                 {
1685                         for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1686                         {
1687                                 tci[0] = subtc[0]>>16;
1688                                 tci[1] = subtc[1]>>16;
1689                                 tci[0] &= tciwrapmask[0];
1690                                 tci[1] &= tciwrapmask[1];
1691                                 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1692                                 c[0] = pixel[0][2] * (1.0f / 255.0f);
1693                                 c[1] = pixel[0][1] * (1.0f / 255.0f);
1694                                 c[2] = pixel[0][0] * (1.0f / 255.0f);
1695                                 c[3] = pixel[0][3] * (1.0f / 255.0f);
1696                                 out4f[x*4+0] = c[0];
1697                                 out4f[x*4+1] = c[1];
1698                                 out4f[x*4+2] = c[2];
1699                                 out4f[x*4+3] = c[3];
1700                         }
1701                 }
1702         }
1703 }
1704
1705 void DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char * RESTRICT out4ub, int texunitindex, int arrayindex, const float * RESTRICT zf)
1706 {
1707 #ifdef SSE2_PRESENT
1708         int x;
1709         int startx = span->startx;
1710         int endx = span->endx;
1711         int flags;
1712         __m128 data, slope, tcscale;
1713         __m128i tcsize, tcmask, tcoffset, tcmax;
1714         __m128 tc, endtc;
1715         __m128i subtc, substep, endsubtc;
1716         int filter;
1717         int mip;
1718         unsigned int *outi = (unsigned int *)out4ub;
1719         const unsigned char * RESTRICT pixelbase;
1720         DPSOFTRAST_Texture *texture = dpsoftrast.texbound[texunitindex];
1721         // if no texture is bound, just fill it with white
1722         if (!texture)
1723         {
1724                 memset(out4ub + startx*4, 255, span->length*4);
1725                 return;
1726         }
1727         mip = span->mip[texunitindex];
1728         // if this mipmap of the texture is 1 pixel, just fill it with that color
1729         if (texture->mipmap[mip][1] == 4)
1730         {
1731                 unsigned int k = *((const unsigned int *)texture->bytes);
1732                 for (x = startx;x < endx;x++)
1733                         outi[x] = k;
1734                 return;
1735         }
1736         filter = texture->filter & DPSOFTRAST_TEXTURE_FILTER_LINEAR;
1737         data = _mm_load_ps(span->data[0][arrayindex]);
1738         slope = _mm_load_ps(span->data[1][arrayindex]);
1739         flags = texture->flags;
1740         pixelbase = (const unsigned char *)texture->bytes + texture->mipmap[mip][0];
1741         tcsize = _mm_shuffle_epi32(_mm_loadu_si128((const __m128i *)&texture->mipmap[mip][0]), _MM_SHUFFLE(3, 2, 3, 2));
1742         tcmask = _mm_sub_epi32(tcsize, _mm_set1_epi32(1));
1743         tcscale = _mm_cvtepi32_ps(tcsize);
1744         data = _mm_mul_ps(_mm_shuffle_ps(data, data, _MM_SHUFFLE(1, 0, 1, 0)), tcscale);
1745         slope = _mm_mul_ps(_mm_shuffle_ps(slope, slope, _MM_SHUFFLE(1, 0, 1, 0)), tcscale);
1746         endtc = _mm_sub_ps(_mm_mul_ps(_mm_add_ps(data, _mm_mul_ps(slope, _mm_set1_ps(startx))), _mm_set1_ps(zf[startx])), _mm_set1_ps(0.5f));
1747         endsubtc = _mm_cvtps_epi32(_mm_mul_ps(endtc, _mm_set1_ps(65536.0f)));
1748         tcoffset = _mm_add_epi32(_mm_slli_epi32(_mm_shuffle_epi32(tcsize, _MM_SHUFFLE(0, 0, 0, 0)), 18), _mm_set1_epi32(4));
1749         tcmax = filter ? _mm_packs_epi32(tcmask, tcmask) : _mm_slli_epi32(tcmask, 16);
1750         for (x = startx;x < endx;)
1751         {
1752                 int nextsub = x + DPSOFTRAST_MAXSUBSPAN, endsub = nextsub - 1;
1753                 __m128 subscale = _mm_set1_ps(65536.0f/DPSOFTRAST_MAXSUBSPAN);
1754                 if(nextsub >= endx)
1755                 {
1756                         nextsub = endsub = endx-1;
1757                         if(x < nextsub) subscale = _mm_set1_ps(65536.0f / (nextsub - x));
1758                 }
1759                 tc = endtc;
1760                 subtc = endsubtc;
1761                 endtc = _mm_sub_ps(_mm_mul_ps(_mm_add_ps(data, _mm_mul_ps(slope, _mm_set1_ps(nextsub))), _mm_set1_ps(zf[nextsub])), _mm_set1_ps(0.5f));
1762                 substep = _mm_cvtps_epi32(_mm_mul_ps(_mm_sub_ps(endtc, tc), subscale));
1763                 endsubtc = _mm_cvtps_epi32(_mm_mul_ps(endtc, _mm_set1_ps(65536.0f)));
1764                 if (filter)
1765                 {
1766                         __m128i tcrange = _mm_srai_epi32(_mm_unpacklo_epi64(subtc, endsubtc), 16);
1767                         if (_mm_movemask_epi8(_mm_andnot_si128(_mm_cmplt_epi32(tcrange, _mm_setzero_si128()), _mm_cmplt_epi32(tcrange, tcmask))) == 0xFFFF)
1768                         {
1769                                 subtc = _mm_unpacklo_epi64(subtc, _mm_add_epi32(subtc, substep));
1770                                 substep = _mm_slli_epi32(substep, 1);
1771                                 for (; x + 1 <= endsub; x += 2, subtc = _mm_add_epi32(subtc, substep))
1772                                 {
1773                                         __m128i tci = _mm_shufflehi_epi16(_mm_shufflelo_epi16(subtc, _MM_SHUFFLE(3, 1, 3, 1)), _MM_SHUFFLE(3, 1, 3, 1)), pix1, pix2, pix3, pix4, fracm;
1774                                         tci = _mm_madd_epi16(_mm_add_epi16(tci, _mm_setr_epi32(0, 0x10000, 0, 0x10000)), tcoffset);
1775                                         pix1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&pixelbase[_mm_cvtsi128_si32(tci)]), _mm_setzero_si128());
1776                                         pix2 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(1, 1, 1, 1)))]), _mm_setzero_si128());
1777                                         pix3 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(2, 2, 2, 2)))]), _mm_setzero_si128());
1778                                         pix4 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(3, 3, 3, 3)))]), _mm_setzero_si128());
1779                                         fracm = _mm_srli_epi16(subtc, 1);
1780                                         pix1 = _mm_add_epi16(pix1,
1781                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1782                                                                                                                  _mm_shuffle_epi32(_mm_shufflelo_epi16(fracm, _MM_SHUFFLE(2, 2, 2, 2)), _MM_SHUFFLE(1, 0, 1, 0))));
1783                                         pix3 = _mm_add_epi16(pix3,
1784                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix4, pix3), 1),
1785                                                                                                                  _mm_shuffle_epi32(_mm_shufflehi_epi16(fracm, _MM_SHUFFLE(2, 2, 2, 2)), _MM_SHUFFLE(3, 2, 3, 2))));
1786                                         pix2 = _mm_unpacklo_epi64(pix1, pix3);
1787                                         pix4 = _mm_unpackhi_epi64(pix1, pix3);
1788                                         pix2 = _mm_add_epi16(pix2,
1789                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix4, pix2), 1),
1790                                                                                                                  _mm_shufflehi_epi16(_mm_shufflelo_epi16(fracm, _MM_SHUFFLE(0, 0, 0, 0)), _MM_SHUFFLE(0, 0, 0, 0))));
1791                                         _mm_storel_epi64((__m128i *)&outi[x], _mm_packus_epi16(pix2, _mm_shufflelo_epi16(pix2, _MM_SHUFFLE(3, 2, 3, 2))));
1792                                 }
1793                                 if (x <= endsub)
1794                                 {
1795                                         __m128i tci = _mm_shufflelo_epi16(subtc, _MM_SHUFFLE(3, 1, 3, 1)), pix1, pix2, fracm;
1796                                         tci = _mm_madd_epi16(_mm_add_epi16(tci, _mm_setr_epi32(0, 0x10000, 0, 0)), tcoffset);
1797                                         pix1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&pixelbase[_mm_cvtsi128_si32(tci)]), _mm_setzero_si128());
1798                                         pix2 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(1, 1, 1, 1)))]), _mm_setzero_si128());
1799                                         fracm = _mm_srli_epi16(subtc, 1);
1800                                         pix1 = _mm_add_epi16(pix1,
1801                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1802                                                                                                                  _mm_shuffle_epi32(_mm_shufflelo_epi16(fracm, _MM_SHUFFLE(2, 2, 2, 2)), _MM_SHUFFLE(1, 0, 1, 0))));
1803                                         pix2 = _mm_shuffle_epi32(pix1, _MM_SHUFFLE(3, 2, 3, 2));
1804                                         pix1 = _mm_add_epi16(pix1,
1805                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1806                                                                                                                  _mm_shufflelo_epi16(fracm, _MM_SHUFFLE(0, 0, 0, 0))));
1807                                         outi[x] = _mm_cvtsi128_si32(_mm_packus_epi16(pix1, pix1));
1808                                         x++;
1809                                 }
1810                         }
1811                         else if (flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE)
1812                         {
1813                                 for (; x <= endsub; x++, subtc = _mm_add_epi32(subtc, substep))
1814                                 {
1815                                         __m128i tci = _mm_shufflehi_epi16(_mm_shufflelo_epi16(subtc, _MM_SHUFFLE(3, 1, 3, 1)), _MM_SHUFFLE(3, 1, 3, 1)), pix1, pix2, fracm;
1816                                         tci = _mm_min_epi16(_mm_max_epi16(_mm_add_epi16(tci, _mm_setr_epi32(0, 1, 0x10000, 0x10001)), _mm_setzero_si128()), tcmax);
1817                                         tci = _mm_madd_epi16(tci, tcoffset);
1818                                         pix1 = _mm_unpacklo_epi8(_mm_unpacklo_epi32(_mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(tci)]),
1819                                                                                                                                 _mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(1, 1, 1, 1)))])),
1820                                                                                         _mm_setzero_si128());
1821                                         pix2 = _mm_unpacklo_epi8(_mm_unpacklo_epi32(_mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(2, 2, 2, 2)))]),
1822                                                                                                                                 _mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(3, 3, 3, 3)))])),
1823                                                                                         _mm_setzero_si128());
1824                                         fracm = _mm_srli_epi16(subtc, 1);
1825                                         pix1 = _mm_add_epi16(pix1,
1826                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1827                                                                                                                  _mm_shuffle_epi32(_mm_shufflelo_epi16(fracm, _MM_SHUFFLE(2, 2, 2, 2)), _MM_SHUFFLE(1, 0, 1, 0))));
1828                                         pix2 = _mm_shuffle_epi32(pix1, _MM_SHUFFLE(3, 2, 3, 2));
1829                                         pix1 = _mm_add_epi16(pix1,
1830                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1831                                                                                                                  _mm_shufflelo_epi16(fracm, _MM_SHUFFLE(0, 0, 0, 0))));
1832                                         outi[x] = _mm_cvtsi128_si32(_mm_packus_epi16(pix1, pix1));
1833                                 }
1834                         }
1835                         else
1836                         {
1837                                 for (; x <= endsub; x++, subtc = _mm_add_epi32(subtc, substep))
1838                                 {
1839                                         __m128i tci = _mm_shufflehi_epi16(_mm_shufflelo_epi16(subtc, _MM_SHUFFLE(3, 1, 3, 1)), _MM_SHUFFLE(3, 1, 3, 1)), pix1, pix2, fracm;
1840                                         tci = _mm_and_si128(_mm_add_epi16(tci, _mm_setr_epi32(0, 1, 0x10000, 0x10001)), tcmax);
1841                                         tci = _mm_madd_epi16(tci, tcoffset);
1842                                         pix1 = _mm_unpacklo_epi8(_mm_unpacklo_epi32(_mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(tci)]),
1843                                                                                                                                 _mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(1, 1, 1, 1)))])),
1844                                                                                         _mm_setzero_si128());
1845                                         pix2 = _mm_unpacklo_epi8(_mm_unpacklo_epi32(_mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(2, 2, 2, 2)))]),
1846                                                                                                                                 _mm_cvtsi32_si128(*(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(3, 3, 3, 3)))])),
1847                                                                                         _mm_setzero_si128());
1848                                         fracm = _mm_srli_epi16(subtc, 1);
1849                                         pix1 = _mm_add_epi16(pix1,
1850                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1851                                                                                                                  _mm_shuffle_epi32(_mm_shufflelo_epi16(fracm, _MM_SHUFFLE(2, 2, 2, 2)), _MM_SHUFFLE(1, 0, 1, 0))));
1852                                         pix2 = _mm_shuffle_epi32(pix1, _MM_SHUFFLE(3, 2, 3, 2));
1853                                         pix1 = _mm_add_epi16(pix1,
1854                                                                                  _mm_mulhi_epi16(_mm_slli_epi16(_mm_sub_epi16(pix2, pix1), 1),
1855                                                                                                                  _mm_shufflelo_epi16(fracm, _MM_SHUFFLE(0, 0, 0, 0))));
1856                                         outi[x] = _mm_cvtsi128_si32(_mm_packus_epi16(pix1, pix1));
1857                                 }
1858                         }
1859                 }
1860                 else
1861                 {
1862                         subtc = _mm_unpacklo_epi64(subtc, _mm_add_epi32(subtc, substep));
1863                         substep = _mm_slli_epi32(substep, 1);
1864                         if (flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE)
1865                         {
1866                                 for (; x + 1 <= endsub; x += 2, subtc = _mm_add_epi32(subtc, substep))
1867                                 {
1868                                         __m128i tci = _mm_min_epi16(_mm_max_epi16(subtc, _mm_setzero_si128()), tcmax);
1869                                         tci = _mm_shufflehi_epi16(_mm_shufflelo_epi16(tci, _MM_SHUFFLE(3, 1, 3, 1)), _MM_SHUFFLE(3, 1, 3, 1));
1870                                         tci = _mm_madd_epi16(tci, tcoffset);
1871                                         outi[x] = *(const int *)&pixelbase[_mm_cvtsi128_si32(tci)];
1872                                         outi[x+1] = *(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(1, 1, 1, 1)))];
1873                                 }
1874                                 if (x <= endsub)
1875                                 {
1876                                         __m128i tci = _mm_min_epi16(_mm_max_epi16(subtc, _mm_setzero_si128()), tcmax);
1877                                         tci = _mm_shufflelo_epi16(tci, _MM_SHUFFLE(3, 1, 3, 1));
1878                                         tci = _mm_madd_epi16(tci, tcoffset);
1879                                         outi[x] = *(const int *)&pixelbase[_mm_cvtsi128_si32(tci)];
1880                                         x++;
1881                                 }
1882                         }
1883                         else
1884                         {
1885                                 for (; x + 1 <= endsub; x += 2, subtc = _mm_add_epi32(subtc, substep))
1886                                 {
1887                                         __m128i tci = _mm_and_si128(subtc, tcmax);
1888                                         tci = _mm_shufflehi_epi16(_mm_shufflelo_epi16(tci, _MM_SHUFFLE(3, 1, 3, 1)), _MM_SHUFFLE(3, 1, 3, 1));
1889                                         tci = _mm_madd_epi16(tci, tcoffset);
1890                                         outi[x] = *(const int *)&pixelbase[_mm_cvtsi128_si32(tci)];
1891                                         outi[x+1] = *(const int *)&pixelbase[_mm_cvtsi128_si32(_mm_shuffle_epi32(tci, _MM_SHUFFLE(1, 1, 1, 1)))];
1892                                 }
1893                                 if (x <= endsub)
1894                                 {
1895                                         __m128i tci = _mm_and_si128(subtc, tcmax);
1896                                         tci = _mm_shufflelo_epi16(tci, _MM_SHUFFLE(3, 1, 3, 1));
1897                                         tci = _mm_madd_epi16(tci, tcoffset);
1898                                         outi[x] = *(const int *)&pixelbase[_mm_cvtsi128_si32(tci)];
1899                                         x++;
1900                                 }
1901                         }
1902                 }
1903         }
1904 #endif
1905 }
1906
1907 void DPSOFTRAST_Draw_Span_TextureCubeVaryingBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char * RESTRICT out4ub, int texunitindex, int arrayindex, const float * RESTRICT zf)
1908 {
1909         // TODO: IMPLEMENT
1910         memset(out4ub, 255, span->length*4);
1911 }
1912
1913 float DPSOFTRAST_SampleShadowmap(const float *vector)
1914 {
1915         // TODO: IMPLEMENT
1916         return 1.0f;
1917 }
1918
1919 void DPSOFTRAST_Draw_Span_MultiplyVarying(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, const float *in4f, int arrayindex, const float *zf)
1920 {
1921         int x;
1922         int startx = span->startx;
1923         int endx = span->endx;
1924         float c[4];
1925         float data[4];
1926         float slope[4];
1927         float z;
1928         data[0] = span->data[0][arrayindex][0];
1929         data[1] = span->data[0][arrayindex][1];
1930         data[2] = span->data[0][arrayindex][2];
1931         data[3] = span->data[0][arrayindex][3];
1932         slope[0] = span->data[1][arrayindex][0];
1933         slope[1] = span->data[1][arrayindex][1];
1934         slope[2] = span->data[1][arrayindex][2];
1935         slope[3] = span->data[1][arrayindex][3];
1936         for (x = startx;x < endx;x++)
1937         {
1938                 z = zf[x];
1939                 c[0] = (data[0] + slope[0]*x) * z;
1940                 c[1] = (data[1] + slope[1]*x) * z;
1941                 c[2] = (data[2] + slope[2]*x) * z;
1942                 c[3] = (data[3] + slope[3]*x) * z;
1943                 out4f[x*4+0] = in4f[x*4+0] * c[0];
1944                 out4f[x*4+1] = in4f[x*4+1] * c[1];
1945                 out4f[x*4+2] = in4f[x*4+2] * c[2];
1946                 out4f[x*4+3] = in4f[x*4+3] * c[3];
1947         }
1948 }
1949
1950 void DPSOFTRAST_Draw_Span_Varying(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, int arrayindex, const float *zf)
1951 {
1952         int x;
1953         int startx = span->startx;
1954         int endx = span->endx;
1955         float c[4];
1956         float data[4];
1957         float slope[4];
1958         float z;
1959         data[0] = span->data[0][arrayindex][0];
1960         data[1] = span->data[0][arrayindex][1];
1961         data[2] = span->data[0][arrayindex][2];
1962         data[3] = span->data[0][arrayindex][3];
1963         slope[0] = span->data[1][arrayindex][0];
1964         slope[1] = span->data[1][arrayindex][1];
1965         slope[2] = span->data[1][arrayindex][2];
1966         slope[3] = span->data[1][arrayindex][3];
1967         for (x = startx;x < endx;x++)
1968         {
1969                 z = zf[x];
1970                 c[0] = (data[0] + slope[0]*x) * z;
1971                 c[1] = (data[1] + slope[1]*x) * z;
1972                 c[2] = (data[2] + slope[2]*x) * z;
1973                 c[3] = (data[3] + slope[3]*x) * z;
1974                 out4f[x*4+0] = c[0];
1975                 out4f[x*4+1] = c[1];
1976                 out4f[x*4+2] = c[2];
1977                 out4f[x*4+3] = c[3];
1978         }
1979 }
1980
1981 void DPSOFTRAST_Draw_Span_AddBloom(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, const float *ina4f, const float *inb4f, const float *subcolor)
1982 {
1983         int x, startx = span->startx, endx = span->endx;
1984         float c[4], localcolor[4];
1985         localcolor[0] = subcolor[0];
1986         localcolor[1] = subcolor[1];
1987         localcolor[2] = subcolor[2];
1988         localcolor[3] = subcolor[3];
1989         for (x = startx;x < endx;x++)
1990         {
1991                 c[0] = inb4f[x*4+0] - localcolor[0];if (c[0] < 0.0f) c[0] = 0.0f;
1992                 c[1] = inb4f[x*4+1] - localcolor[1];if (c[1] < 0.0f) c[1] = 0.0f;
1993                 c[2] = inb4f[x*4+2] - localcolor[2];if (c[2] < 0.0f) c[2] = 0.0f;
1994                 c[3] = inb4f[x*4+3] - localcolor[3];if (c[3] < 0.0f) c[3] = 0.0f;
1995                 out4f[x*4+0] = ina4f[x*4+0] + c[0];
1996                 out4f[x*4+1] = ina4f[x*4+1] + c[1];
1997                 out4f[x*4+2] = ina4f[x*4+2] + c[2];
1998                 out4f[x*4+3] = ina4f[x*4+3] + c[3];
1999         }
2000 }
2001
2002 void DPSOFTRAST_Draw_Span_MultiplyBuffers(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, const float *ina4f, const float *inb4f)
2003 {
2004         int x, startx = span->startx, endx = span->endx;
2005         for (x = startx;x < endx;x++)
2006         {
2007                 out4f[x*4+0] = ina4f[x*4+0] * inb4f[x*4+0];
2008                 out4f[x*4+1] = ina4f[x*4+1] * inb4f[x*4+1];
2009                 out4f[x*4+2] = ina4f[x*4+2] * inb4f[x*4+2];
2010                 out4f[x*4+3] = ina4f[x*4+3] * inb4f[x*4+3];
2011         }
2012 }
2013
2014 void DPSOFTRAST_Draw_Span_AddBuffers(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, const float *ina4f, const float *inb4f)
2015 {
2016         int x, startx = span->startx, endx = span->endx;
2017         for (x = startx;x < endx;x++)
2018         {
2019                 out4f[x*4+0] = ina4f[x*4+0] + inb4f[x*4+0];
2020                 out4f[x*4+1] = ina4f[x*4+1] + inb4f[x*4+1];
2021                 out4f[x*4+2] = ina4f[x*4+2] + inb4f[x*4+2];
2022                 out4f[x*4+3] = ina4f[x*4+3] + inb4f[x*4+3];
2023         }
2024 }
2025
2026 void DPSOFTRAST_Draw_Span_MixBuffers(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, const float *ina4f, const float *inb4f)
2027 {
2028         int x, startx = span->startx, endx = span->endx;
2029         float a, b;
2030         for (x = startx;x < endx;x++)
2031         {
2032                 a = 1.0f - inb4f[x*4+3];
2033                 b = inb4f[x*4+3];
2034                 out4f[x*4+0] = ina4f[x*4+0] * a + inb4f[x*4+0] * b;
2035                 out4f[x*4+1] = ina4f[x*4+1] * a + inb4f[x*4+1] * b;
2036                 out4f[x*4+2] = ina4f[x*4+2] * a + inb4f[x*4+2] * b;
2037                 out4f[x*4+3] = ina4f[x*4+3] * a + inb4f[x*4+3] * b;
2038         }
2039 }
2040
2041 void DPSOFTRAST_Draw_Span_MixUniformColor(const DPSOFTRAST_State_Draw_Span * RESTRICT span, float *out4f, const float *in4f, const float *color)
2042 {
2043         int x, startx = span->startx, endx = span->endx;
2044         float localcolor[4], ilerp, lerp;
2045         localcolor[0] = color[0];
2046         localcolor[1] = color[1];
2047         localcolor[2] = color[2];
2048         localcolor[3] = color[3];
2049         ilerp = 1.0f - localcolor[3];
2050         lerp = localcolor[3];
2051         for (x = startx;x < endx;x++)
2052         {
2053                 out4f[x*4+0] = in4f[x*4+0] * ilerp + localcolor[0] * lerp;
2054                 out4f[x*4+1] = in4f[x*4+1] * ilerp + localcolor[1] * lerp;
2055                 out4f[x*4+2] = in4f[x*4+2] * ilerp + localcolor[2] * lerp;
2056                 out4f[x*4+3] = in4f[x*4+3] * ilerp + localcolor[3] * lerp;
2057         }
2058 }
2059
2060
2061
2062 void DPSOFTRAST_Draw_Span_MultiplyVaryingBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *in4ub, int arrayindex, const float *zf)
2063 {
2064         int x;
2065         int startx = span->startx;
2066         int endx = span->endx;
2067         float data[4];
2068         float slope[4];
2069         float z;
2070         data[2] = span->data[0][arrayindex][0];
2071         data[1] = span->data[0][arrayindex][1];
2072         data[0] = span->data[0][arrayindex][2];
2073         data[3] = span->data[0][arrayindex][3];
2074         slope[2] = span->data[1][arrayindex][0];
2075         slope[1] = span->data[1][arrayindex][1];
2076         slope[0] = span->data[1][arrayindex][2];
2077         slope[3] = span->data[1][arrayindex][3];
2078         for (x = startx;x < endx;x++)
2079         {
2080                 z = zf[x];
2081                 out4ub[x*4+0] = (int)(in4ub[x*4+0] * (data[0] + slope[0]*x) * z);
2082                 out4ub[x*4+1] = (int)(in4ub[x*4+1] * (data[1] + slope[1]*x) * z);
2083                 out4ub[x*4+2] = (int)(in4ub[x*4+2] * (data[2] + slope[2]*x) * z);
2084                 out4ub[x*4+3] = (int)(in4ub[x*4+3] * (data[3] + slope[3]*x) * z);
2085         }
2086 }
2087
2088 void DPSOFTRAST_Draw_Span_VaryingBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, int arrayindex, const float *zf)
2089 {
2090         int x;
2091         int startx = span->startx;
2092         int endx = span->endx;
2093         float data[4];
2094         float slope[4];
2095         float z;
2096         data[2] = span->data[0][arrayindex][0]*255.0f;
2097         data[1] = span->data[0][arrayindex][1]*255.0f;
2098         data[0] = span->data[0][arrayindex][2]*255.0f;
2099         data[3] = span->data[0][arrayindex][3]*255.0f;
2100         slope[2] = span->data[1][arrayindex][0]*255.0f;
2101         slope[1] = span->data[1][arrayindex][1]*255.0f;
2102         slope[0] = span->data[1][arrayindex][2]*255.0f;
2103         slope[3] = span->data[1][arrayindex][3]*255.0f;
2104         for (x = startx;x < endx;x++)
2105         {
2106                 z = zf[x];
2107                 out4ub[x*4+0] = (int)((data[0] + slope[0]*x) * z);
2108                 out4ub[x*4+1] = (int)((data[1] + slope[1]*x) * z);
2109                 out4ub[x*4+2] = (int)((data[2] + slope[2]*x) * z);
2110                 out4ub[x*4+3] = (int)((data[3] + slope[3]*x) * z);
2111         }
2112 }
2113
2114 void DPSOFTRAST_Draw_Span_AddBloomBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *ina4ub, const unsigned char *inb4ub, const float *subcolor)
2115 {
2116         int x, startx = span->startx, endx = span->endx;
2117         int c[4], localcolor[4];
2118         localcolor[2] = (int)(subcolor[0] * 255.0f);
2119         localcolor[1] = (int)(subcolor[1] * 255.0f);
2120         localcolor[0] = (int)(subcolor[2] * 255.0f);
2121         localcolor[3] = (int)(subcolor[3] * 255.0f);
2122         for (x = startx;x < endx;x++)
2123         {
2124                 c[0] = inb4ub[x*4+0] - localcolor[0];if (c[0] < 0) c[0] = 0;
2125                 c[1] = inb4ub[x*4+1] - localcolor[1];if (c[1] < 0) c[1] = 0;
2126                 c[2] = inb4ub[x*4+2] - localcolor[2];if (c[2] < 0) c[2] = 0;
2127                 c[3] = inb4ub[x*4+3] - localcolor[3];if (c[3] < 0) c[3] = 0;
2128                 c[0] += ina4ub[x*4+0];if (c[0] > 255) c[0] = 255;
2129                 c[1] += ina4ub[x*4+1];if (c[1] > 255) c[1] = 255;
2130                 c[2] += ina4ub[x*4+2];if (c[2] > 255) c[2] = 255;
2131                 c[3] += ina4ub[x*4+3];if (c[3] > 255) c[3] = 255;
2132                 out4ub[x*4+0] = c[0];
2133                 out4ub[x*4+1] = c[1];
2134                 out4ub[x*4+2] = c[2];
2135                 out4ub[x*4+3] = c[3];
2136         }
2137 }
2138
2139 void DPSOFTRAST_Draw_Span_MultiplyBuffersBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *ina4ub, const unsigned char *inb4ub)
2140 {
2141         int x, startx = span->startx, endx = span->endx;
2142         for (x = startx;x < endx;x++)
2143         {
2144                 out4ub[x*4+0] = (ina4ub[x*4+0] * inb4ub[x*4+0])>>8;
2145                 out4ub[x*4+1] = (ina4ub[x*4+1] * inb4ub[x*4+1])>>8;
2146                 out4ub[x*4+2] = (ina4ub[x*4+2] * inb4ub[x*4+2])>>8;
2147                 out4ub[x*4+3] = (ina4ub[x*4+3] * inb4ub[x*4+3])>>8;
2148         }
2149 }
2150
2151 void DPSOFTRAST_Draw_Span_AddBuffersBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *ina4ub, const unsigned char *inb4ub)
2152 {
2153         int x, startx = span->startx, endx = span->endx;
2154         int d[4];
2155         for (x = startx;x < endx;x++)
2156         {
2157                 d[0] = ina4ub[x*4+0] + inb4ub[x*4+0];if (d[0] > 255) d[0] = 255;
2158                 d[1] = ina4ub[x*4+1] + inb4ub[x*4+1];if (d[1] > 255) d[1] = 255;
2159                 d[2] = ina4ub[x*4+2] + inb4ub[x*4+2];if (d[2] > 255) d[2] = 255;
2160                 d[3] = ina4ub[x*4+3] + inb4ub[x*4+3];if (d[3] > 255) d[3] = 255;
2161                 out4ub[x*4+0] = d[0];
2162                 out4ub[x*4+1] = d[1];
2163                 out4ub[x*4+2] = d[2];
2164                 out4ub[x*4+3] = d[3];
2165         }
2166 }
2167
2168 void DPSOFTRAST_Draw_Span_TintedAddBuffersBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *ina4ub, const unsigned char *inb4ub, const float *inbtintbgra)
2169 {
2170         int x, startx = span->startx, endx = span->endx;
2171         int d[4];
2172         int b[4];
2173         b[0] = (int)(inbtintbgra[0] * 256.0f);
2174         b[1] = (int)(inbtintbgra[1] * 256.0f);
2175         b[2] = (int)(inbtintbgra[2] * 256.0f);
2176         b[3] = (int)(inbtintbgra[3] * 256.0f);
2177         for (x = startx;x < endx;x++)
2178         {
2179                 d[0] = ina4ub[x*4+0] + ((inb4ub[x*4+0]*b[0])>>8);if (d[0] > 255) d[0] = 255;
2180                 d[1] = ina4ub[x*4+1] + ((inb4ub[x*4+1]*b[1])>>8);if (d[1] > 255) d[1] = 255;
2181                 d[2] = ina4ub[x*4+2] + ((inb4ub[x*4+2]*b[2])>>8);if (d[2] > 255) d[2] = 255;
2182                 d[3] = ina4ub[x*4+3] + ((inb4ub[x*4+3]*b[3])>>8);if (d[3] > 255) d[3] = 255;
2183                 out4ub[x*4+0] = d[0];
2184                 out4ub[x*4+1] = d[1];
2185                 out4ub[x*4+2] = d[2];
2186                 out4ub[x*4+3] = d[3];
2187         }
2188 }
2189
2190 void DPSOFTRAST_Draw_Span_MixBuffersBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *ina4ub, const unsigned char *inb4ub)
2191 {
2192         int x, startx = span->startx, endx = span->endx;
2193         int a, b;
2194         for (x = startx;x < endx;x++)
2195         {
2196                 a = 256 - inb4ub[x*4+3];
2197                 b = inb4ub[x*4+3];
2198                 out4ub[x*4+0] = (ina4ub[x*4+0] * a + inb4ub[x*4+0] * b)>>8;
2199                 out4ub[x*4+1] = (ina4ub[x*4+1] * a + inb4ub[x*4+1] * b)>>8;
2200                 out4ub[x*4+2] = (ina4ub[x*4+2] * a + inb4ub[x*4+2] * b)>>8;
2201                 out4ub[x*4+3] = (ina4ub[x*4+3] * a + inb4ub[x*4+3] * b)>>8;
2202         }
2203 }
2204
2205 void DPSOFTRAST_Draw_Span_MixUniformColorBGRA8(const DPSOFTRAST_State_Draw_Span * RESTRICT span, unsigned char *out4ub, const unsigned char *in4ub, const float *color)
2206 {
2207         int x, startx = span->startx, endx = span->endx;
2208         int localcolor[4], ilerp, lerp;
2209         localcolor[2] = (int)(color[0]*255.0f);
2210         localcolor[1] = (int)(color[1]*255.0f);
2211         localcolor[0] = (int)(color[2]*255.0f);
2212         localcolor[3] = (int)(color[3]*255.0f);
2213         ilerp = 256 - localcolor[3];
2214         lerp = localcolor[3];
2215         for (x = startx;x < endx;x++)
2216         {
2217                 out4ub[x*4+0] = (in4ub[x*4+0] * ilerp + localcolor[0] * lerp)>>8;
2218                 out4ub[x*4+1] = (in4ub[x*4+1] * ilerp + localcolor[1] * lerp)>>8;
2219                 out4ub[x*4+2] = (in4ub[x*4+2] * ilerp + localcolor[2] * lerp)>>8;
2220                 out4ub[x*4+3] = (in4ub[x*4+3] * ilerp + localcolor[3] * lerp)>>8;
2221         }
2222 }
2223
2224
2225
2226 void DPSOFTRAST_VertexShader_Generic(void)
2227 {
2228         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2229         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.numvertices);
2230         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
2231         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SPECULAR)
2232                 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1], dpsoftrast.draw.numvertices);
2233 }
2234
2235 void DPSOFTRAST_PixelShader_Generic(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2236 {
2237         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2238         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2239         unsigned char buffer_texture_lightmapbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2240         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2241         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2242         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_DIFFUSE)
2243         {
2244                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_FIRST, 2, buffer_z);
2245                 DPSOFTRAST_Draw_Span_MultiplyVaryingBGRA8(span, buffer_FragColorbgra8, buffer_texture_colorbgra8, 1, buffer_z);
2246                 if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SPECULAR)
2247                 {
2248                         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_lightmapbgra8, GL20TU_SECOND, 2, buffer_z);
2249                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
2250                         {
2251                                 // multiply
2252                                 DPSOFTRAST_Draw_Span_MultiplyBuffersBGRA8(span, buffer_FragColorbgra8, buffer_FragColorbgra8, buffer_texture_lightmapbgra8);
2253                         }
2254                         else if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
2255                         {
2256                                 // add
2257                                 DPSOFTRAST_Draw_Span_AddBuffersBGRA8(span, buffer_FragColorbgra8, buffer_FragColorbgra8, buffer_texture_lightmapbgra8);
2258                         }
2259                         else if (dpsoftrast.shader_permutation & SHADERPERMUTATION_VERTEXTEXTUREBLEND)
2260                         {
2261                                 // alphablend
2262                                 DPSOFTRAST_Draw_Span_MixBuffersBGRA8(span, buffer_FragColorbgra8, buffer_FragColorbgra8, buffer_texture_lightmapbgra8);
2263                         }
2264                 }
2265         }
2266         else
2267                 DPSOFTRAST_Draw_Span_VaryingBGRA8(span, buffer_FragColorbgra8, 1, buffer_z);
2268         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2269 }
2270
2271
2272
2273 void DPSOFTRAST_VertexShader_PostProcess(void)
2274 {
2275         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2276         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
2277         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1], dpsoftrast.draw.numvertices);
2278 }
2279
2280 void DPSOFTRAST_PixelShader_PostProcess(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2281 {
2282         // TODO: optimize!!  at the very least there is no reason to use texture sampling on the frame texture
2283         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2284         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2285         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2286         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2287         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_FragColorbgra8, GL20TU_FIRST, 2, buffer_z);
2288         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_BLOOM)
2289         {
2290                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_SECOND, 3, buffer_z);
2291                 DPSOFTRAST_Draw_Span_AddBloomBGRA8(span, buffer_FragColorbgra8, buffer_FragColorbgra8, buffer_texture_colorbgra8, dpsoftrast.uniform4f + DPSOFTRAST_UNIFORM_BloomColorSubtract * 4);
2292         }
2293         DPSOFTRAST_Draw_Span_MixUniformColorBGRA8(span, buffer_FragColorbgra8, buffer_FragColorbgra8, dpsoftrast.uniform4f + DPSOFTRAST_UNIFORM_ViewTintColor * 4);
2294         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SATURATION)
2295         {
2296                 // TODO: implement saturation
2297         }
2298         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GAMMARAMPS)
2299         {
2300                 // TODO: implement gammaramps
2301         }
2302         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2303 }
2304
2305
2306
2307 void DPSOFTRAST_VertexShader_Depth_Or_Shadow(void)
2308 {
2309         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2310 }
2311
2312 void DPSOFTRAST_PixelShader_Depth_Or_Shadow(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2313 {
2314         // this is never called (because colormask is off when this shader is used)
2315         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2316         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2317         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2318         memset(buffer_FragColorbgra8, 0, span->length*4);
2319         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2320 }
2321
2322
2323
2324 void DPSOFTRAST_VertexShader_FlatColor(void)
2325 {
2326         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2327         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_TexMatrixM1);
2328 }
2329
2330 void DPSOFTRAST_PixelShader_FlatColor(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2331 {
2332         int x, startx = span->startx, endx = span->endx;
2333         int Color_Ambienti[4];
2334         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2335         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2336         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2337         Color_Ambienti[2] = (int)(dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0]*256.0f);
2338         Color_Ambienti[1] = (int)(dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1]*256.0f);
2339         Color_Ambienti[0] = (int)(dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2]*256.0f);
2340         Color_Ambienti[3] = (int)(dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0]        *256.0f);
2341         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2342         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_COLOR, 2, buffer_z);
2343         for (x = startx;x < endx;x++)
2344         {
2345                 buffer_FragColorbgra8[x*4+0] = (buffer_texture_colorbgra8[x*4+0] * Color_Ambienti[0])>>8;
2346                 buffer_FragColorbgra8[x*4+1] = (buffer_texture_colorbgra8[x*4+1] * Color_Ambienti[1])>>8;
2347                 buffer_FragColorbgra8[x*4+2] = (buffer_texture_colorbgra8[x*4+2] * Color_Ambienti[2])>>8;
2348                 buffer_FragColorbgra8[x*4+3] = (buffer_texture_colorbgra8[x*4+3] * Color_Ambienti[3])>>8;
2349         }
2350         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2351 }
2352
2353
2354
2355 void DPSOFTRAST_VertexShader_VertexColor(void)
2356 {
2357         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2358         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.numvertices);
2359         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_TexMatrixM1);
2360 }
2361
2362 void DPSOFTRAST_PixelShader_VertexColor(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2363 {
2364         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2365         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2366         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2367         int x, startx = span->startx, endx = span->endx;
2368         float Color_Ambient[4], Color_Diffuse[4];
2369         float data[4];
2370         float slope[4];
2371         float z;
2372         int arrayindex = DPSOFTRAST_ARRAY_COLOR;
2373         data[2] = span->data[0][arrayindex][0];
2374         data[1] = span->data[0][arrayindex][1];
2375         data[0] = span->data[0][arrayindex][2];
2376         data[3] = span->data[0][arrayindex][3];
2377         slope[2] = span->data[1][arrayindex][0];
2378         slope[1] = span->data[1][arrayindex][1];
2379         slope[0] = span->data[1][arrayindex][2];
2380         slope[3] = span->data[1][arrayindex][3];
2381         Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0];
2382         Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1];
2383         Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2];
2384         Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0];
2385         Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0];
2386         Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1];
2387         Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2];
2388         Color_Diffuse[3] = 0.0f;
2389         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2390         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_COLOR, 2, buffer_z);
2391         for (x = startx;x < endx;x++)
2392         {
2393                 z = buffer_z[x];
2394                 buffer_FragColorbgra8[x*4+0] = (int)(buffer_texture_colorbgra8[x*4+0] * (Color_Ambient[0] + ((data[0] + slope[0]*x) * z) * Color_Diffuse[0]));
2395                 buffer_FragColorbgra8[x*4+1] = (int)(buffer_texture_colorbgra8[x*4+1] * (Color_Ambient[1] + ((data[1] + slope[1]*x) * z) * Color_Diffuse[1]));
2396                 buffer_FragColorbgra8[x*4+2] = (int)(buffer_texture_colorbgra8[x*4+2] * (Color_Ambient[2] + ((data[2] + slope[2]*x) * z) * Color_Diffuse[2]));
2397                 buffer_FragColorbgra8[x*4+3] = (int)(buffer_texture_colorbgra8[x*4+3] * (Color_Ambient[3] + ((data[3] + slope[3]*x) * z) * Color_Diffuse[3]));
2398         }
2399         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2400 }
2401
2402
2403
2404 void DPSOFTRAST_VertexShader_Lightmap(void)
2405 {
2406         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2407         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_TexMatrixM1);
2408         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD4], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD4], dpsoftrast.draw.numvertices);
2409 }
2410
2411 void DPSOFTRAST_PixelShader_Lightmap(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2412 {
2413 #ifdef SSE2_PRESENT
2414         unsigned char * RESTRICT pixelmask = span->pixelmask;
2415         unsigned char * RESTRICT pixel = (unsigned char *)dpsoftrast.fb_colorpixels[0] + span->start * 4;
2416         int x, startx = span->startx, endx = span->endx;
2417         __m128i Color_Ambientm, Color_Diffusem, Color_Glowm, Color_AmbientGlowm;
2418         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2419         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2420         unsigned char buffer_texture_lightmapbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2421         unsigned char buffer_texture_glowbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2422         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2423         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2424         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_COLOR, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2425         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_lightmapbgra8, GL20TU_LIGHTMAP, DPSOFTRAST_ARRAY_TEXCOORD4, buffer_z);
2426         if (dpsoftrast.user.alphatest || dpsoftrast.fb_blendmode != DPSOFTRAST_BLENDMODE_OPAQUE)
2427                 pixel = buffer_FragColorbgra8;
2428         Color_Ambientm = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_mul_ps(_mm_load_ps(&dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4]), _mm_set1_ps(256.0f))), _MM_SHUFFLE(3, 0, 1, 2));
2429         Color_Ambientm = _mm_and_si128(Color_Ambientm, _mm_setr_epi32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0));
2430         Color_Ambientm = _mm_or_si128(Color_Ambientm, _mm_setr_epi32(0, 0, 0, (int)(dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0]*255.0f)));
2431         Color_Ambientm = _mm_packs_epi32(Color_Ambientm, Color_Ambientm);
2432         Color_Diffusem = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_mul_ps(_mm_load_ps(&dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4]), _mm_set1_ps(256.0f))), _MM_SHUFFLE(3, 0, 1, 2));
2433         Color_Diffusem = _mm_and_si128(Color_Diffusem, _mm_setr_epi32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0));
2434         Color_Diffusem = _mm_packs_epi32(Color_Diffusem, Color_Diffusem);
2435         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GLOW)
2436         {
2437                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_glowbgra8, GL20TU_GLOW, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2438                 Color_Glowm = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_mul_ps(_mm_load_ps(&dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4]), _mm_set1_ps(256.0f))), _MM_SHUFFLE(3, 0, 1, 2));
2439                 Color_Glowm = _mm_and_si128(Color_Glowm, _mm_setr_epi32(0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0));
2440                 Color_Glowm = _mm_packs_epi32(Color_Glowm, Color_Glowm);
2441                 Color_AmbientGlowm = _mm_unpacklo_epi64(Color_Ambientm, Color_Glowm);
2442                 for (x = startx;x < endx;x++)
2443                 {
2444                         __m128i color, lightmap, glow, pix;
2445                         if (x + 4 <= endx && *(const unsigned int *)&pixelmask[x] == 0x01010101)
2446                         {
2447                                 __m128i pix2;
2448                                 color = _mm_loadu_si128((const __m128i *)&buffer_texture_colorbgra8[x*4]);
2449                                 lightmap = _mm_loadu_si128((const __m128i *)&buffer_texture_lightmapbgra8[x*4]);
2450                                 glow = _mm_loadu_si128((const __m128i *)&buffer_texture_glowbgra8[x*4]);
2451                                 pix = _mm_add_epi16(_mm_mulhi_epu16(_mm_add_epi16(_mm_mulhi_epu16(Color_Diffusem, _mm_unpacklo_epi8(_mm_setzero_si128(), lightmap)), Color_Ambientm),
2452                                                                                                         _mm_unpacklo_epi8(_mm_setzero_si128(), color)),
2453                                                                         _mm_mulhi_epu16(Color_Glowm, _mm_unpacklo_epi8(_mm_setzero_si128(), glow)));
2454                                 pix2 = _mm_add_epi16(_mm_mulhi_epu16(_mm_add_epi16(_mm_mulhi_epu16(Color_Diffusem, _mm_unpackhi_epi8(_mm_setzero_si128(), lightmap)), Color_Ambientm),
2455                                                                                                         _mm_unpackhi_epi8(_mm_setzero_si128(), color)),
2456                                                                         _mm_mulhi_epu16(Color_Glowm, _mm_unpackhi_epi8(_mm_setzero_si128(), glow)));
2457                                 _mm_storeu_si128((__m128i *)&pixel[x*4], _mm_packus_epi16(pix, pix2));
2458                                 x += 3;
2459                                 continue;
2460                         }
2461                         if(!pixelmask[x])
2462                                 continue;
2463                         color = _mm_unpacklo_epi8(_mm_setzero_si128(), _mm_cvtsi32_si128(*(const int *)&buffer_texture_colorbgra8[x*4]));
2464                         lightmap = _mm_unpacklo_epi8(_mm_setzero_si128(), _mm_cvtsi32_si128(*(const int *)&buffer_texture_lightmapbgra8[x*4]));
2465                         glow = _mm_unpacklo_epi8(_mm_setzero_si128(), _mm_cvtsi32_si128(*(const int *)&buffer_texture_glowbgra8[x*4]));
2466                         pix = _mm_mulhi_epu16(_mm_add_epi16(_mm_mulhi_epu16(Color_Diffusem, lightmap), Color_AmbientGlowm), _mm_unpacklo_epi64(color, glow));
2467                         pix = _mm_add_epi16(pix, _mm_shuffle_epi32(pix, _MM_SHUFFLE(3, 2, 3, 2)));
2468                         *(int *)&pixel[x*4] = _mm_cvtsi128_si32(_mm_packus_epi16(pix, pix));
2469                 }
2470         }
2471         else
2472         {
2473                 for (x = startx;x < endx;x++)
2474                 {
2475                         __m128i color, lightmap, pix;
2476                         if (x + 4 <= endx && *(const unsigned int *)&pixelmask[x] == 0x01010101)
2477                         {
2478                                 __m128i pix2;
2479                                 color = _mm_loadu_si128((const __m128i *)&buffer_texture_colorbgra8[x*4]);
2480                                 lightmap = _mm_loadu_si128((const __m128i *)&buffer_texture_lightmapbgra8[x*4]);
2481                                 pix = _mm_mulhi_epu16(_mm_add_epi16(_mm_mulhi_epu16(Color_Diffusem, _mm_unpacklo_epi8(_mm_setzero_si128(), lightmap)), Color_Ambientm),
2482                                                                           _mm_unpacklo_epi8(_mm_setzero_si128(), color));
2483                                 pix2 = _mm_mulhi_epu16(_mm_add_epi16(_mm_mulhi_epu16(Color_Diffusem, _mm_unpackhi_epi8(_mm_setzero_si128(), lightmap)), Color_Ambientm),
2484                                                                            _mm_unpackhi_epi8(_mm_setzero_si128(), color));
2485                                 _mm_storeu_si128((__m128i *)&pixel[x*4], _mm_packus_epi16(pix, pix2));
2486                                 x += 3;
2487                                 continue;
2488                         }
2489                         if(!pixelmask[x])
2490                                 continue;
2491                         color = _mm_unpacklo_epi8(_mm_setzero_si128(), _mm_cvtsi32_si128(*(const int *)&buffer_texture_colorbgra8[x*4]));
2492                         lightmap = _mm_unpacklo_epi8(_mm_setzero_si128(), _mm_cvtsi32_si128(*(const int *)&buffer_texture_lightmapbgra8[x*4]));
2493                         pix = _mm_mulhi_epu16(_mm_add_epi16(_mm_mulhi_epu16(lightmap, Color_Diffusem), Color_Ambientm), color);
2494                         *(int *)&pixel[x*4] = _mm_cvtsi128_si32(_mm_packus_epi16(pix, pix));
2495                 }
2496         }
2497         if(pixel == buffer_FragColorbgra8)
2498                 DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2499 #endif
2500 }
2501
2502
2503
2504 void DPSOFTRAST_VertexShader_FakeLight(void)
2505 {
2506         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2507 }
2508
2509 void DPSOFTRAST_PixelShader_FakeLight(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2510 {
2511         // TODO: IMPLEMENT
2512         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2513         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2514         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2515         memset(buffer_FragColorbgra8, 0, span->length*4);
2516         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2517 }
2518
2519
2520
2521 void DPSOFTRAST_VertexShader_LightDirectionMap_ModelSpace(void)
2522 {
2523         DPSOFTRAST_VertexShader_Lightmap();
2524 }
2525
2526 void DPSOFTRAST_PixelShader_LightDirectionMap_ModelSpace(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2527 {
2528         DPSOFTRAST_PixelShader_Lightmap(span);
2529         // TODO: IMPLEMENT
2530 }
2531
2532
2533
2534 void DPSOFTRAST_VertexShader_LightDirectionMap_TangentSpace(void)
2535 {
2536         DPSOFTRAST_VertexShader_Lightmap();
2537 }
2538
2539 void DPSOFTRAST_PixelShader_LightDirectionMap_TangentSpace(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2540 {
2541         DPSOFTRAST_PixelShader_Lightmap(span);
2542         // TODO: IMPLEMENT
2543 }
2544
2545
2546
2547 void DPSOFTRAST_VertexShader_LightDirection(void)
2548 {
2549         int i;
2550         int numvertices = dpsoftrast.draw.numvertices;
2551         float LightDir[4];
2552         float LightVector[4];
2553         float EyePosition[4];
2554         float EyeVectorModelSpace[4];
2555         float EyeVector[4];
2556         float position[4];
2557         float svector[4];
2558         float tvector[4];
2559         float normal[4];
2560         LightDir[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightDir*4+0];
2561         LightDir[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightDir*4+1];
2562         LightDir[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightDir*4+2];
2563         LightDir[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightDir*4+3];
2564         EyePosition[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+0];
2565         EyePosition[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+1];
2566         EyePosition[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+2];
2567         EyePosition[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+3];
2568         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2569         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_TexMatrixM1);
2570         for (i = 0;i < numvertices;i++)
2571         {
2572                 position[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+0];
2573                 position[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+1];
2574                 position[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+2];
2575                 svector[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+0];
2576                 svector[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+1];
2577                 svector[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+2];
2578                 tvector[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+0];
2579                 tvector[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+1];
2580                 tvector[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+2];
2581                 normal[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD3][i*4+0];
2582                 normal[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD3][i*4+1];
2583                 normal[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD3][i*4+2];
2584                 LightVector[0] = svector[0] * LightDir[0] + svector[1] * LightDir[1] + svector[2] * LightDir[2];
2585                 LightVector[1] = tvector[0] * LightDir[0] + tvector[1] * LightDir[1] + tvector[2] * LightDir[2];
2586                 LightVector[2] = normal[0] * LightDir[0] + normal[1] * LightDir[1] + normal[2] * LightDir[2];
2587                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+0] = LightVector[0];
2588                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+1] = LightVector[1];
2589                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+2] = LightVector[2];
2590                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+3] = 0.0f;
2591                 EyeVectorModelSpace[0] = EyePosition[0] - position[0];
2592                 EyeVectorModelSpace[1] = EyePosition[1] - position[1];
2593                 EyeVectorModelSpace[2] = EyePosition[2] - position[2];
2594                 EyeVector[0] = svector[0] * EyeVectorModelSpace[0] + svector[1] * EyeVectorModelSpace[1] + svector[2] * EyeVectorModelSpace[2];
2595                 EyeVector[1] = tvector[0] * EyeVectorModelSpace[0] + tvector[1] * EyeVectorModelSpace[1] + tvector[2] * EyeVectorModelSpace[2];
2596                 EyeVector[2] = normal[0]  * EyeVectorModelSpace[0] + normal[1]  * EyeVectorModelSpace[1] + normal[2]  * EyeVectorModelSpace[2];
2597                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+0] = EyeVector[0];
2598                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+1] = EyeVector[1];
2599                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+2] = EyeVector[2];
2600                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+3] = 0.0f;
2601         }
2602 }
2603
2604 #define DPSOFTRAST_Min(a,b) ((a) < (b) ? (a) : (b))
2605 #define DPSOFTRAST_Max(a,b) ((a) > (b) ? (a) : (b))
2606 #define DPSOFTRAST_Vector3Dot(a,b) ((a)[0]*(b)[0]+(a)[1]*(b)[1]+(a)[2]*(b)[2])
2607 #define DPSOFTRAST_Vector3LengthSquared(v) (DPSOFTRAST_Vector3Dot((v),(v)))
2608 #define DPSOFTRAST_Vector3Length(v) (sqrt(DPSOFTRAST_Vector3LengthSquared(v)))
2609 #define DPSOFTRAST_Vector3Normalize(v)\
2610 do\
2611 {\
2612         float len = sqrt(DPSOFTRAST_Vector3Dot(v,v));\
2613         if (len)\
2614         {\
2615                 len = 1.0f / len;\
2616                 v[0] *= len;\
2617                 v[1] *= len;\
2618                 v[2] *= len;\
2619         }\
2620 }\
2621 while(0)
2622
2623 void DPSOFTRAST_PixelShader_LightDirection(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2624 {
2625         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2626         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2627         unsigned char buffer_texture_normalbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2628         unsigned char buffer_texture_glossbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2629         unsigned char buffer_texture_glowbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2630         unsigned char buffer_texture_pantsbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2631         unsigned char buffer_texture_shirtbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2632         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2633         int x, startx = span->startx, endx = span->endx;
2634         float Color_Ambient[4], Color_Diffuse[4], Color_Specular[4], Color_Glow[4], Color_Pants[4], Color_Shirt[4], LightColor[4];
2635         float LightVectordata[4];
2636         float LightVectorslope[4];
2637         float EyeVectordata[4];
2638         float EyeVectorslope[4];
2639         float z;
2640         float diffusetex[4];
2641         float glosstex[4];
2642         float surfacenormal[4];
2643         float lightnormal[4];
2644         float eyenormal[4];
2645         float specularnormal[4];
2646         float diffuse;
2647         float specular;
2648         float SpecularPower;
2649         int d[4];
2650         Color_Glow[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4+0];
2651         Color_Glow[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4+1];
2652         Color_Glow[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4+2];
2653         Color_Glow[3] = 0.0f;
2654         Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0];
2655         Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1];
2656         Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2];
2657         Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0];
2658         Color_Pants[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Pants*4+0];
2659         Color_Pants[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Pants*4+1];
2660         Color_Pants[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Pants*4+2];
2661         Color_Pants[3] = 0.0f;
2662         Color_Shirt[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Shirt*4+0];
2663         Color_Shirt[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Shirt*4+1];
2664         Color_Shirt[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Shirt*4+2];
2665         Color_Shirt[3] = 0.0f;
2666         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
2667         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_COLOR, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2668         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
2669         {
2670                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_pantsbgra8, GL20TU_PANTS, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2671                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_shirtbgra8, GL20TU_SHIRT, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2672         }
2673         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GLOW)
2674         {
2675                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_glowbgra8, GL20TU_GLOW, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2676         }
2677         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SPECULAR)
2678         {
2679                 Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0];
2680                 Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1];
2681                 Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2];
2682                 Color_Diffuse[3] = 0.0f;
2683                 LightColor[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+0];
2684                 LightColor[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+1];
2685                 LightColor[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+2];
2686                 LightColor[3] = 0.0f;
2687                 LightVectordata[0]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][0];
2688                 LightVectordata[1]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][1];
2689                 LightVectordata[2]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][2];
2690                 LightVectordata[3]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][3];
2691                 LightVectorslope[0] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][0];
2692                 LightVectorslope[1] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][1];
2693                 LightVectorslope[2] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][2];
2694                 LightVectorslope[3] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][3];
2695                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_normalbgra8, GL20TU_NORMAL, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2696                 Color_Specular[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Specular*4+0];
2697                 Color_Specular[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Specular*4+1];
2698                 Color_Specular[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Specular*4+2];
2699                 Color_Specular[3] = 0.0f;
2700                 SpecularPower = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_SpecularPower*4+0] * (1.0f / 255.0f);
2701                 EyeVectordata[0]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][0];
2702                 EyeVectordata[1]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][1];
2703                 EyeVectordata[2]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][2];
2704                 EyeVectordata[3]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][3];
2705                 EyeVectorslope[0]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][0];
2706                 EyeVectorslope[1]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][1];
2707                 EyeVectorslope[2]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][2];
2708                 EyeVectorslope[3]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][3];
2709                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_glossbgra8, GL20TU_GLOSS, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2710                 for (x = startx;x < endx;x++)
2711                 {
2712                         z = buffer_z[x];
2713                         diffusetex[0] = buffer_texture_colorbgra8[x*4+0];
2714                         diffusetex[1] = buffer_texture_colorbgra8[x*4+1];
2715                         diffusetex[2] = buffer_texture_colorbgra8[x*4+2];
2716                         diffusetex[3] = buffer_texture_colorbgra8[x*4+3];
2717                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
2718                         {
2719                                 diffusetex[0] += buffer_texture_pantsbgra8[x*4+0] * Color_Pants[0] + buffer_texture_shirtbgra8[x*4+0] * Color_Shirt[0];
2720                                 diffusetex[1] += buffer_texture_pantsbgra8[x*4+1] * Color_Pants[1] + buffer_texture_shirtbgra8[x*4+1] * Color_Shirt[1];
2721                                 diffusetex[2] += buffer_texture_pantsbgra8[x*4+2] * Color_Pants[2] + buffer_texture_shirtbgra8[x*4+2] * Color_Shirt[2];
2722                                 diffusetex[3] += buffer_texture_pantsbgra8[x*4+3] * Color_Pants[3] + buffer_texture_shirtbgra8[x*4+3] * Color_Shirt[3];
2723                         }
2724                         glosstex[0] = buffer_texture_glossbgra8[x*4+0];
2725                         glosstex[1] = buffer_texture_glossbgra8[x*4+1];
2726                         glosstex[2] = buffer_texture_glossbgra8[x*4+2];
2727                         glosstex[3] = buffer_texture_glossbgra8[x*4+3];
2728                         surfacenormal[0] = buffer_texture_normalbgra8[x*4+2] * (1.0f / 128.0f) - 1.0f;
2729                         surfacenormal[1] = buffer_texture_normalbgra8[x*4+1] * (1.0f / 128.0f) - 1.0f;
2730                         surfacenormal[2] = buffer_texture_normalbgra8[x*4+0] * (1.0f / 128.0f) - 1.0f;
2731                         DPSOFTRAST_Vector3Normalize(surfacenormal);
2732
2733                         lightnormal[0] = (LightVectordata[0] + LightVectorslope[0]*x) * z;
2734                         lightnormal[1] = (LightVectordata[1] + LightVectorslope[1]*x) * z;
2735                         lightnormal[2] = (LightVectordata[2] + LightVectorslope[2]*x) * z;
2736                         DPSOFTRAST_Vector3Normalize(lightnormal);
2737
2738                         eyenormal[0] = (EyeVectordata[0] + EyeVectorslope[0]*x) * z;
2739                         eyenormal[1] = (EyeVectordata[1] + EyeVectorslope[1]*x) * z;
2740                         eyenormal[2] = (EyeVectordata[2] + EyeVectorslope[2]*x) * z;
2741                         DPSOFTRAST_Vector3Normalize(eyenormal);
2742
2743                         specularnormal[0] = lightnormal[0] + eyenormal[0];
2744                         specularnormal[1] = lightnormal[1] + eyenormal[1];
2745                         specularnormal[2] = lightnormal[2] + eyenormal[2];
2746                         DPSOFTRAST_Vector3Normalize(specularnormal);
2747
2748                         diffuse = DPSOFTRAST_Vector3Dot(surfacenormal, lightnormal);if (diffuse < 0.0f) diffuse = 0.0f;
2749                         specular = DPSOFTRAST_Vector3Dot(surfacenormal, specularnormal);if (specular < 0.0f) specular = 0.0f;
2750                         specular = pow(specular, SpecularPower * glosstex[3]);
2751                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GLOW)
2752                         {
2753                                 d[0] = (int)(buffer_texture_glowbgra8[x*4+0] * Color_Glow[0] + diffusetex[0] * Color_Ambient[0] + (diffusetex[0] * Color_Diffuse[0] * diffuse + glosstex[0] * Color_Specular[0] * specular) * LightColor[0]);if (d[0] > 255) d[0] = 255;
2754                                 d[1] = (int)(buffer_texture_glowbgra8[x*4+1] * Color_Glow[1] + diffusetex[1] * Color_Ambient[1] + (diffusetex[1] * Color_Diffuse[1] * diffuse + glosstex[1] * Color_Specular[1] * specular) * LightColor[1]);if (d[1] > 255) d[1] = 255;
2755                                 d[2] = (int)(buffer_texture_glowbgra8[x*4+2] * Color_Glow[2] + diffusetex[2] * Color_Ambient[2] + (diffusetex[2] * Color_Diffuse[2] * diffuse + glosstex[2] * Color_Specular[2] * specular) * LightColor[2]);if (d[2] > 255) d[2] = 255;
2756                                 d[3] = (int)(                                                  diffusetex[3] * Color_Ambient[3]);if (d[3] > 255) d[3] = 255;
2757                         }
2758                         else
2759                         {
2760                                 d[0] = (int)(                                                  diffusetex[0] * Color_Ambient[0] + (diffusetex[0] * Color_Diffuse[0] * diffuse + glosstex[0] * Color_Specular[0] * specular) * LightColor[0]);if (d[0] > 255) d[0] = 255;
2761                                 d[1] = (int)(                                                  diffusetex[1] * Color_Ambient[1] + (diffusetex[1] * Color_Diffuse[1] * diffuse + glosstex[1] * Color_Specular[1] * specular) * LightColor[1]);if (d[1] > 255) d[1] = 255;
2762                                 d[2] = (int)(                                                  diffusetex[2] * Color_Ambient[2] + (diffusetex[2] * Color_Diffuse[2] * diffuse + glosstex[2] * Color_Specular[2] * specular) * LightColor[2]);if (d[2] > 255) d[2] = 255;
2763                                 d[3] = (int)(                                                  diffusetex[3] * Color_Ambient[3]);if (d[3] > 255) d[3] = 255;
2764                         }
2765                         buffer_FragColorbgra8[x*4+0] = d[0];
2766                         buffer_FragColorbgra8[x*4+1] = d[1];
2767                         buffer_FragColorbgra8[x*4+2] = d[2];
2768                         buffer_FragColorbgra8[x*4+3] = d[3];
2769                 }
2770         }
2771         else if (dpsoftrast.shader_permutation & SHADERPERMUTATION_DIFFUSE)
2772         {
2773                 Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0];
2774                 Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1];
2775                 Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2];
2776                 Color_Diffuse[3] = 0.0f;
2777                 LightColor[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+0];
2778                 LightColor[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+1];
2779                 LightColor[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+2];
2780                 LightColor[3] = 0.0f;
2781                 LightVectordata[0]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][0];
2782                 LightVectordata[1]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][1];
2783                 LightVectordata[2]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][2];
2784                 LightVectordata[3]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][3];
2785                 LightVectorslope[0] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][0];
2786                 LightVectorslope[1] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][1];
2787                 LightVectorslope[2] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][2];
2788                 LightVectorslope[3] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][3];
2789                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_normalbgra8, GL20TU_NORMAL, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
2790                 for (x = startx;x < endx;x++)
2791                 {
2792                         z = buffer_z[x];
2793                         diffusetex[0] = buffer_texture_colorbgra8[x*4+0];
2794                         diffusetex[1] = buffer_texture_colorbgra8[x*4+1];
2795                         diffusetex[2] = buffer_texture_colorbgra8[x*4+2];
2796                         diffusetex[3] = buffer_texture_colorbgra8[x*4+3];
2797                         surfacenormal[0] = buffer_texture_normalbgra8[x*4+2] * (1.0f / 128.0f) - 1.0f;
2798                         surfacenormal[1] = buffer_texture_normalbgra8[x*4+1] * (1.0f / 128.0f) - 1.0f;
2799                         surfacenormal[2] = buffer_texture_normalbgra8[x*4+0] * (1.0f / 128.0f) - 1.0f;
2800                         DPSOFTRAST_Vector3Normalize(surfacenormal);
2801
2802                         lightnormal[0] = (LightVectordata[0] + LightVectorslope[0]*x) * z;
2803                         lightnormal[1] = (LightVectordata[1] + LightVectorslope[1]*x) * z;
2804                         lightnormal[2] = (LightVectordata[2] + LightVectorslope[2]*x) * z;
2805                         DPSOFTRAST_Vector3Normalize(lightnormal);
2806
2807                         diffuse = DPSOFTRAST_Vector3Dot(surfacenormal, lightnormal);if (diffuse < 0.0f) diffuse = 0.0f;
2808                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GLOW)
2809                         {
2810                                 d[0] = (int)(buffer_texture_glowbgra8[x*4+0] * Color_Glow[0] + diffusetex[0] * (Color_Ambient[0] + Color_Diffuse[0] * diffuse * LightColor[0]));if (d[0] > 255) d[0] = 255;
2811                                 d[1] = (int)(buffer_texture_glowbgra8[x*4+1] * Color_Glow[1] + diffusetex[1] * (Color_Ambient[1] + Color_Diffuse[1] * diffuse * LightColor[1]));if (d[1] > 255) d[1] = 255;
2812                                 d[2] = (int)(buffer_texture_glowbgra8[x*4+2] * Color_Glow[2] + diffusetex[2] * (Color_Ambient[2] + Color_Diffuse[2] * diffuse * LightColor[2]));if (d[2] > 255) d[2] = 255;
2813                                 d[3] = (int)(                                                  diffusetex[3] * (Color_Ambient[3]                                             ));if (d[3] > 255) d[3] = 255;
2814                         }
2815                         else
2816                         {
2817                                 d[0] = (int)(                                                + diffusetex[0] * (Color_Ambient[0] + Color_Diffuse[0] * diffuse * LightColor[0]));if (d[0] > 255) d[0] = 255;
2818                                 d[1] = (int)(                                                + diffusetex[1] * (Color_Ambient[1] + Color_Diffuse[1] * diffuse * LightColor[1]));if (d[1] > 255) d[1] = 255;
2819                                 d[2] = (int)(                                                + diffusetex[2] * (Color_Ambient[2] + Color_Diffuse[2] * diffuse * LightColor[2]));if (d[2] > 255) d[2] = 255;
2820                                 d[3] = (int)(                                                  diffusetex[3] * (Color_Ambient[3]                                             ));if (d[3] > 255) d[3] = 255;
2821                         }
2822                         buffer_FragColorbgra8[x*4+0] = d[0];
2823                         buffer_FragColorbgra8[x*4+1] = d[1];
2824                         buffer_FragColorbgra8[x*4+2] = d[2];
2825                         buffer_FragColorbgra8[x*4+3] = d[3];
2826                 }
2827         }
2828         else
2829         {
2830                 for (x = startx;x < endx;x++)
2831                 {
2832                         z = buffer_z[x];
2833                         diffusetex[0] = buffer_texture_colorbgra8[x*4+0];
2834                         diffusetex[1] = buffer_texture_colorbgra8[x*4+1];
2835                         diffusetex[2] = buffer_texture_colorbgra8[x*4+2];
2836                         diffusetex[3] = buffer_texture_colorbgra8[x*4+3];
2837
2838                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GLOW)
2839                         {
2840                                 d[0] = (int)(buffer_texture_glowbgra8[x*4+0] * Color_Glow[0] + diffusetex[0] * Color_Ambient[0]);if (d[0] > 255) d[0] = 255;
2841                                 d[1] = (int)(buffer_texture_glowbgra8[x*4+1] * Color_Glow[1] + diffusetex[1] * Color_Ambient[1]);if (d[1] > 255) d[1] = 255;
2842                                 d[2] = (int)(buffer_texture_glowbgra8[x*4+2] * Color_Glow[2] + diffusetex[2] * Color_Ambient[2]);if (d[2] > 255) d[2] = 255;
2843                                 d[3] = (int)(                                                  diffusetex[3] * Color_Ambient[3]);if (d[3] > 255) d[3] = 255;
2844                         }
2845                         else
2846                         {
2847                                 d[0] = (int)(                                                  diffusetex[0] * Color_Ambient[0]);if (d[0] > 255) d[0] = 255;
2848                                 d[1] = (int)(                                                  diffusetex[1] * Color_Ambient[1]);if (d[1] > 255) d[1] = 255;
2849                                 d[2] = (int)(                                                  diffusetex[2] * Color_Ambient[2]);if (d[2] > 255) d[2] = 255;
2850                                 d[3] = (int)(                                                  diffusetex[3] * Color_Ambient[3]);if (d[3] > 255) d[3] = 255;
2851                         }
2852                         buffer_FragColorbgra8[x*4+0] = d[0];
2853                         buffer_FragColorbgra8[x*4+1] = d[1];
2854                         buffer_FragColorbgra8[x*4+2] = d[2];
2855                         buffer_FragColorbgra8[x*4+3] = d[3];
2856                 }
2857         }
2858         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
2859 }
2860
2861
2862
2863 void DPSOFTRAST_VertexShader_LightSource(void)
2864 {
2865         int i;
2866         int numvertices = dpsoftrast.draw.numvertices;
2867         float LightPosition[4];
2868         float LightVector[4];
2869         float LightVectorModelSpace[4];
2870         float EyePosition[4];
2871         float EyeVectorModelSpace[4];
2872         float EyeVector[4];
2873         float position[4];
2874         float svector[4];
2875         float tvector[4];
2876         float normal[4];
2877         LightPosition[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightPosition*4+0];
2878         LightPosition[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightPosition*4+1];
2879         LightPosition[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightPosition*4+2];
2880         LightPosition[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightPosition*4+3];
2881         EyePosition[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+0];
2882         EyePosition[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+1];
2883         EyePosition[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+2];
2884         EyePosition[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_EyePosition*4+3];
2885         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
2886         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_TexMatrixM1);
2887         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD3], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelToLightM1);
2888         DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD4], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD4], dpsoftrast.draw.numvertices);
2889         for (i = 0;i < numvertices;i++)
2890         {
2891                 position[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+0];
2892                 position[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+1];
2893                 position[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+2];
2894                 svector[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+0];
2895                 svector[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+1];
2896                 svector[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+2];
2897                 tvector[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+0];
2898                 tvector[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+1];
2899                 tvector[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+2];
2900                 normal[0] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD3][i*4+0];
2901                 normal[1] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD3][i*4+1];
2902                 normal[2] = dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD3][i*4+2];
2903                 LightVectorModelSpace[0] = LightPosition[0] - position[0];
2904                 LightVectorModelSpace[1] = LightPosition[1] - position[1];
2905                 LightVectorModelSpace[2] = LightPosition[2] - position[2];
2906                 LightVector[0] = svector[0] * LightVectorModelSpace[0] + svector[1] * LightVectorModelSpace[1] + svector[2] * LightVectorModelSpace[2];
2907                 LightVector[1] = tvector[0] * LightVectorModelSpace[0] + tvector[1] * LightVectorModelSpace[1] + tvector[2] * LightVectorModelSpace[2];
2908                 LightVector[2] = normal[0]  * LightVectorModelSpace[0] + normal[1]  * LightVectorModelSpace[1] + normal[2]  * LightVectorModelSpace[2];
2909                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+0] = LightVector[0];
2910                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+1] = LightVector[1];
2911                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+2] = LightVector[2];
2912                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1][i*4+3] = 0.0f;
2913                 EyeVectorModelSpace[0] = EyePosition[0] - position[0];
2914                 EyeVectorModelSpace[1] = EyePosition[1] - position[1];
2915                 EyeVectorModelSpace[2] = EyePosition[2] - position[2];
2916                 EyeVector[0] = svector[0] * EyeVectorModelSpace[0] + svector[1] * EyeVectorModelSpace[1] + svector[2] * EyeVectorModelSpace[2];
2917                 EyeVector[1] = tvector[0] * EyeVectorModelSpace[0] + tvector[1] * EyeVectorModelSpace[1] + tvector[2] * EyeVectorModelSpace[2];
2918                 EyeVector[2] = normal[0]  * EyeVectorModelSpace[0] + normal[1]  * EyeVectorModelSpace[1] + normal[2]  * EyeVectorModelSpace[2];
2919                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+0] = EyeVector[0];
2920                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+1] = EyeVector[1];
2921                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+2] = EyeVector[2];
2922                 dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD2][i*4+3] = 0.0f;
2923         }
2924 }
2925
2926 void DPSOFTRAST_PixelShader_LightSource(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
2927 {
2928         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
2929         unsigned char buffer_texture_colorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2930         unsigned char buffer_texture_normalbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2931         unsigned char buffer_texture_glossbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2932         unsigned char buffer_texture_cubebgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2933         unsigned char buffer_texture_pantsbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2934         unsigned char buffer_texture_shirtbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2935         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
2936         int x, startx = span->startx, endx = span->endx;
2937         float Color_Ambient[4], Color_Diffuse[4], Color_Specular[4], Color_Glow[4], Color_Pants[4], Color_Shirt[4], LightColor[4];
2938         float CubeVectordata[4];
2939         float CubeVectorslope[4];
2940         float LightVectordata[4];
2941         float LightVectorslope[4];
2942         float EyeVectordata[4];
2943         float EyeVectorslope[4];
2944         float z;
2945         float diffusetex[4];
2946         float glosstex[4];
2947         float surfacenormal[4];
2948         float lightnormal[4];
2949         float eyenormal[4];
2950         float specularnormal[4];
2951         float diffuse;
2952         float specular;
2953         float SpecularPower;
2954         float CubeVector[4];
2955         float attenuation;
2956         int d[4];
2957         Color_Glow[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4+0];
2958         Color_Glow[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4+1];
2959         Color_Glow[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Glow*4+2];
2960         Color_Glow[3] = 0.0f;
2961         Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0];
2962         Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1];
2963         Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2];
2964         Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0];
2965         Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0];
2966         Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1];
2967         Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2];
2968         Color_Diffuse[3] = 0.0f;
2969         Color_Specular[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Specular*4+0];
2970         Color_Specular[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Specular*4+1];
2971         Color_Specular[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Specular*4+2];
2972         Color_Specular[3] = 0.0f;
2973         Color_Pants[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Pants*4+0];
2974         Color_Pants[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Pants*4+1];
2975         Color_Pants[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Pants*4+2];
2976         Color_Pants[3] = 0.0f;
2977         Color_Shirt[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Shirt*4+0];
2978         Color_Shirt[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Shirt*4+1];
2979         Color_Shirt[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Shirt*4+2];
2980         Color_Shirt[3] = 0.0f;
2981         LightColor[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+0];
2982         LightColor[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+1];
2983         LightColor[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_LightColor*4+2];
2984         LightColor[3] = 0.0f;
2985         SpecularPower = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_SpecularPower*4+0] * (1.0f / 255.0f);
2986         EyeVectordata[0]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][0];
2987         EyeVectordata[1]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][1];
2988         EyeVectordata[2]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][2];
2989         EyeVectordata[3]    = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD2][3];
2990         EyeVectorslope[0]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][0];
2991         EyeVectorslope[1]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][1];
2992         EyeVectorslope[2]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][2];
2993         EyeVectorslope[3]   = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD2][3];
2994         LightVectordata[0]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][0];
2995         LightVectordata[1]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][1];
2996         LightVectordata[2]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][2];
2997         LightVectordata[3]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD1][3];
2998         LightVectorslope[0] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][0];
2999         LightVectorslope[1] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][1];
3000         LightVectorslope[2] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][2];
3001         LightVectorslope[3] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD1][3];
3002         CubeVectordata[0]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD3][0];
3003         CubeVectordata[1]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD3][1];
3004         CubeVectordata[2]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD3][2];
3005         CubeVectordata[3]  = span->data[0][DPSOFTRAST_ARRAY_TEXCOORD3][3];
3006         CubeVectorslope[0] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD3][0];
3007         CubeVectorslope[1] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD3][1];
3008         CubeVectorslope[2] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD3][2];
3009         CubeVectorslope[3] = span->data[1][DPSOFTRAST_ARRAY_TEXCOORD3][3];
3010         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
3011         memset(buffer_FragColorbgra8 + startx*4, 0, (endx-startx)*4); // clear first, because we skip writing black pixels, and there are a LOT of them...
3012         DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_colorbgra8, GL20TU_COLOR, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
3013         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
3014         {
3015                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_pantsbgra8, GL20TU_PANTS, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
3016                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_shirtbgra8, GL20TU_SHIRT, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
3017         }
3018         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_CUBEFILTER)
3019                 DPSOFTRAST_Draw_Span_TextureCubeVaryingBGRA8(span, buffer_texture_cubebgra8, GL20TU_CUBE, DPSOFTRAST_ARRAY_TEXCOORD3, buffer_z);
3020         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SPECULAR)
3021         {
3022                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_normalbgra8, GL20TU_NORMAL, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
3023                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_glossbgra8, GL20TU_GLOSS, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
3024                 for (x = startx;x < endx;x++)
3025                 {
3026                         z = buffer_z[x];
3027                         CubeVector[0] = (CubeVectordata[0] + CubeVectorslope[0]*x) * z;
3028                         CubeVector[1] = (CubeVectordata[1] + CubeVectorslope[1]*x) * z;
3029                         CubeVector[2] = (CubeVectordata[2] + CubeVectorslope[2]*x) * z;
3030                         attenuation = 1.0f - DPSOFTRAST_Vector3LengthSquared(CubeVector);
3031                         if (attenuation < 0.01f)
3032                                 continue;
3033                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SHADOWMAP2D)
3034                         {
3035                                 attenuation *= DPSOFTRAST_SampleShadowmap(CubeVector);
3036                                 if (attenuation < 0.01f)
3037                                         continue;
3038                         }
3039
3040                         diffusetex[0] = buffer_texture_colorbgra8[x*4+0];
3041                         diffusetex[1] = buffer_texture_colorbgra8[x*4+1];
3042                         diffusetex[2] = buffer_texture_colorbgra8[x*4+2];
3043                         diffusetex[3] = buffer_texture_colorbgra8[x*4+3];
3044                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
3045                         {
3046                                 diffusetex[0] += buffer_texture_pantsbgra8[x*4+0] * Color_Pants[0] + buffer_texture_shirtbgra8[x*4+0] * Color_Shirt[0];
3047                                 diffusetex[1] += buffer_texture_pantsbgra8[x*4+1] * Color_Pants[1] + buffer_texture_shirtbgra8[x*4+1] * Color_Shirt[1];
3048                                 diffusetex[2] += buffer_texture_pantsbgra8[x*4+2] * Color_Pants[2] + buffer_texture_shirtbgra8[x*4+2] * Color_Shirt[2];
3049                                 diffusetex[3] += buffer_texture_pantsbgra8[x*4+3] * Color_Pants[3] + buffer_texture_shirtbgra8[x*4+3] * Color_Shirt[3];
3050                         }
3051                         glosstex[0] = buffer_texture_glossbgra8[x*4+0];
3052                         glosstex[1] = buffer_texture_glossbgra8[x*4+1];
3053                         glosstex[2] = buffer_texture_glossbgra8[x*4+2];
3054                         glosstex[3] = buffer_texture_glossbgra8[x*4+3];
3055                         surfacenormal[0] = buffer_texture_normalbgra8[x*4+2] * (1.0f / 128.0f) - 1.0f;
3056                         surfacenormal[1] = buffer_texture_normalbgra8[x*4+1] * (1.0f / 128.0f) - 1.0f;
3057                         surfacenormal[2] = buffer_texture_normalbgra8[x*4+0] * (1.0f / 128.0f) - 1.0f;
3058                         DPSOFTRAST_Vector3Normalize(surfacenormal);
3059
3060                         lightnormal[0] = (LightVectordata[0] + LightVectorslope[0]*x) * z;
3061                         lightnormal[1] = (LightVectordata[1] + LightVectorslope[1]*x) * z;
3062                         lightnormal[2] = (LightVectordata[2] + LightVectorslope[2]*x) * z;
3063                         DPSOFTRAST_Vector3Normalize(lightnormal);
3064
3065                         eyenormal[0] = (EyeVectordata[0] + EyeVectorslope[0]*x) * z;
3066                         eyenormal[1] = (EyeVectordata[1] + EyeVectorslope[1]*x) * z;
3067                         eyenormal[2] = (EyeVectordata[2] + EyeVectorslope[2]*x) * z;
3068                         DPSOFTRAST_Vector3Normalize(eyenormal);
3069
3070                         specularnormal[0] = lightnormal[0] + eyenormal[0];
3071                         specularnormal[1] = lightnormal[1] + eyenormal[1];
3072                         specularnormal[2] = lightnormal[2] + eyenormal[2];
3073                         DPSOFTRAST_Vector3Normalize(specularnormal);
3074
3075                         diffuse = DPSOFTRAST_Vector3Dot(surfacenormal, lightnormal);if (diffuse < 0.0f) diffuse = 0.0f;
3076                         specular = DPSOFTRAST_Vector3Dot(surfacenormal, specularnormal);if (specular < 0.0f) specular = 0.0f;
3077                         specular = pow(specular, SpecularPower * glosstex[3]);
3078                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_CUBEFILTER)
3079                         {
3080                                 // scale down the attenuation to account for the cubefilter multiplying everything by 255
3081                                 attenuation *= (1.0f / 255.0f);
3082                                 d[0] = (int)((diffusetex[0] * (Color_Ambient[0] + Color_Diffuse[0] * diffuse) + glosstex[0] * Color_Specular[0] * specular) * LightColor[0] * buffer_texture_cubebgra8[x*4+0] * attenuation);if (d[0] > 255) d[0] = 255;
3083                                 d[1] = (int)((diffusetex[1] * (Color_Ambient[1] + Color_Diffuse[1] * diffuse) + glosstex[1] * Color_Specular[1] * specular) * LightColor[1] * buffer_texture_cubebgra8[x*4+1] * attenuation);if (d[1] > 255) d[1] = 255;
3084                                 d[2] = (int)((diffusetex[2] * (Color_Ambient[2] + Color_Diffuse[2] * diffuse) + glosstex[2] * Color_Specular[2] * specular) * LightColor[2] * buffer_texture_cubebgra8[x*4+2] * attenuation);if (d[2] > 255) d[2] = 255;
3085                                 d[3] = (int)( diffusetex[3]                                                                                                                                                                );if (d[3] > 255) d[3] = 255;
3086                         }
3087                         else
3088                         {
3089                                 d[0] = (int)((diffusetex[0] * (Color_Ambient[0] + Color_Diffuse[0] * diffuse) + glosstex[0] * Color_Specular[0] * specular) * LightColor[0]                                   * attenuation);if (d[0] > 255) d[0] = 255;
3090                                 d[1] = (int)((diffusetex[1] * (Color_Ambient[1] + Color_Diffuse[1] * diffuse) + glosstex[1] * Color_Specular[1] * specular) * LightColor[1]                                   * attenuation);if (d[1] > 255) d[1] = 255;
3091                                 d[2] = (int)((diffusetex[2] * (Color_Ambient[2] + Color_Diffuse[2] * diffuse) + glosstex[2] * Color_Specular[2] * specular) * LightColor[2]                                   * attenuation);if (d[2] > 255) d[2] = 255;
3092                                 d[3] = (int)( diffusetex[3]                                                                                                                                                                );if (d[3] > 255) d[3] = 255;
3093                         }
3094                         buffer_FragColorbgra8[x*4+0] = d[0];
3095                         buffer_FragColorbgra8[x*4+1] = d[1];
3096                         buffer_FragColorbgra8[x*4+2] = d[2];
3097                         buffer_FragColorbgra8[x*4+3] = d[3];
3098                 }
3099         }
3100         else if (dpsoftrast.shader_permutation & SHADERPERMUTATION_DIFFUSE)
3101         {
3102                 DPSOFTRAST_Draw_Span_Texture2DVaryingBGRA8(span, buffer_texture_normalbgra8, GL20TU_NORMAL, DPSOFTRAST_ARRAY_TEXCOORD0, buffer_z);
3103                 for (x = startx;x < endx;x++)
3104                 {
3105                         z = buffer_z[x];
3106                         CubeVector[0] = (CubeVectordata[0] + CubeVectorslope[0]*x) * z;
3107                         CubeVector[1] = (CubeVectordata[1] + CubeVectorslope[1]*x) * z;
3108                         CubeVector[2] = (CubeVectordata[2] + CubeVectorslope[2]*x) * z;
3109                         attenuation = 1.0f - DPSOFTRAST_Vector3LengthSquared(CubeVector);
3110                         if (attenuation < 0.01f)
3111                                 continue;
3112                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SHADOWMAP2D)
3113                         {
3114                                 attenuation *= DPSOFTRAST_SampleShadowmap(CubeVector);
3115                                 if (attenuation < 0.01f)
3116                                         continue;
3117                         }
3118
3119                         diffusetex[0] = buffer_texture_colorbgra8[x*4+0];
3120                         diffusetex[1] = buffer_texture_colorbgra8[x*4+1];
3121                         diffusetex[2] = buffer_texture_colorbgra8[x*4+2];
3122                         diffusetex[3] = buffer_texture_colorbgra8[x*4+3];
3123                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
3124                         {
3125                                 diffusetex[0] += buffer_texture_pantsbgra8[x*4+0] * Color_Pants[0] + buffer_texture_shirtbgra8[x*4+0] * Color_Shirt[0];
3126                                 diffusetex[1] += buffer_texture_pantsbgra8[x*4+1] * Color_Pants[1] + buffer_texture_shirtbgra8[x*4+1] * Color_Shirt[1];
3127                                 diffusetex[2] += buffer_texture_pantsbgra8[x*4+2] * Color_Pants[2] + buffer_texture_shirtbgra8[x*4+2] * Color_Shirt[2];
3128                                 diffusetex[3] += buffer_texture_pantsbgra8[x*4+3] * Color_Pants[3] + buffer_texture_shirtbgra8[x*4+3] * Color_Shirt[3];
3129                         }
3130                         surfacenormal[0] = buffer_texture_normalbgra8[x*4+2] * (1.0f / 128.0f) - 1.0f;
3131                         surfacenormal[1] = buffer_texture_normalbgra8[x*4+1] * (1.0f / 128.0f) - 1.0f;
3132                         surfacenormal[2] = buffer_texture_normalbgra8[x*4+0] * (1.0f / 128.0f) - 1.0f;
3133                         DPSOFTRAST_Vector3Normalize(surfacenormal);
3134
3135                         lightnormal[0] = (LightVectordata[0] + LightVectorslope[0]*x) * z;
3136                         lightnormal[1] = (LightVectordata[1] + LightVectorslope[1]*x) * z;
3137                         lightnormal[2] = (LightVectordata[2] + LightVectorslope[2]*x) * z;
3138                         DPSOFTRAST_Vector3Normalize(lightnormal);
3139
3140                         diffuse = DPSOFTRAST_Vector3Dot(surfacenormal, lightnormal);if (diffuse < 0.0f) diffuse = 0.0f;
3141                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_CUBEFILTER)
3142                         {
3143                                 // scale down the attenuation to account for the cubefilter multiplying everything by 255
3144                                 attenuation *= (1.0f / 255.0f);
3145                                 d[0] = (int)((diffusetex[0] * (Color_Ambient[0] + Color_Diffuse[0] * diffuse)) * LightColor[0] * buffer_texture_cubebgra8[x*4+0] * attenuation);if (d[0] > 255) d[0] = 255;
3146                                 d[1] = (int)((diffusetex[1] * (Color_Ambient[1] + Color_Diffuse[1] * diffuse)) * LightColor[1] * buffer_texture_cubebgra8[x*4+1] * attenuation);if (d[1] > 255) d[1] = 255;
3147                                 d[2] = (int)((diffusetex[2] * (Color_Ambient[2] + Color_Diffuse[2] * diffuse)) * LightColor[2] * buffer_texture_cubebgra8[x*4+2] * attenuation);if (d[2] > 255) d[2] = 255;
3148                                 d[3] = (int)( diffusetex[3]                                                                                                                   );if (d[3] > 255) d[3] = 255;
3149                         }
3150                         else
3151                         {
3152                                 d[0] = (int)((diffusetex[0] * (Color_Ambient[0] + Color_Diffuse[0] * diffuse)) * LightColor[0]                                   * attenuation);if (d[0] > 255) d[0] = 255;
3153                                 d[1] = (int)((diffusetex[1] * (Color_Ambient[1] + Color_Diffuse[1] * diffuse)) * LightColor[1]                                   * attenuation);if (d[1] > 255) d[1] = 255;
3154                                 d[2] = (int)((diffusetex[2] * (Color_Ambient[2] + Color_Diffuse[2] * diffuse)) * LightColor[2]                                   * attenuation);if (d[2] > 255) d[2] = 255;
3155                                 d[3] = (int)( diffusetex[3]                                                                                                                                                                );if (d[3] > 255) d[3] = 255;
3156                         }
3157                         buffer_FragColorbgra8[x*4+0] = d[0];
3158                         buffer_FragColorbgra8[x*4+1] = d[1];
3159                         buffer_FragColorbgra8[x*4+2] = d[2];
3160                         buffer_FragColorbgra8[x*4+3] = d[3];
3161                 }
3162         }
3163         else
3164         {
3165                 for (x = startx;x < endx;x++)
3166                 {
3167                         z = buffer_z[x];
3168                         CubeVector[0] = (CubeVectordata[0] + CubeVectorslope[0]*x) * z;
3169                         CubeVector[1] = (CubeVectordata[1] + CubeVectorslope[1]*x) * z;
3170                         CubeVector[2] = (CubeVectordata[2] + CubeVectorslope[2]*x) * z;
3171                         attenuation = 1.0f - DPSOFTRAST_Vector3LengthSquared(CubeVector);
3172                         if (attenuation < 0.01f)
3173                                 continue;
3174                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SHADOWMAP2D)
3175                         {
3176                                 attenuation *= DPSOFTRAST_SampleShadowmap(CubeVector);
3177                                 if (attenuation < 0.01f)
3178                                         continue;
3179                         }
3180
3181                         diffusetex[0] = buffer_texture_colorbgra8[x*4+0];
3182                         diffusetex[1] = buffer_texture_colorbgra8[x*4+1];
3183                         diffusetex[2] = buffer_texture_colorbgra8[x*4+2];
3184                         diffusetex[3] = buffer_texture_colorbgra8[x*4+3];
3185                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_COLORMAPPING)
3186                         {
3187                                 diffusetex[0] += buffer_texture_pantsbgra8[x*4+0] * Color_Pants[0] + buffer_texture_shirtbgra8[x*4+0] * Color_Shirt[0];
3188                                 diffusetex[1] += buffer_texture_pantsbgra8[x*4+1] * Color_Pants[1] + buffer_texture_shirtbgra8[x*4+1] * Color_Shirt[1];
3189                                 diffusetex[2] += buffer_texture_pantsbgra8[x*4+2] * Color_Pants[2] + buffer_texture_shirtbgra8[x*4+2] * Color_Shirt[2];
3190                                 diffusetex[3] += buffer_texture_pantsbgra8[x*4+3] * Color_Pants[3] + buffer_texture_shirtbgra8[x*4+3] * Color_Shirt[3];
3191                         }
3192                         if (dpsoftrast.shader_permutation & SHADERPERMUTATION_CUBEFILTER)
3193                         {
3194                                 // scale down the attenuation to account for the cubefilter multiplying everything by 255
3195                                 attenuation *= (1.0f / 255.0f);
3196                                 d[0] = (int)((diffusetex[0] * (Color_Ambient[0])) * LightColor[0] * buffer_texture_cubebgra8[x*4+0] * attenuation);if (d[0] > 255) d[0] = 255;
3197                                 d[1] = (int)((diffusetex[1] * (Color_Ambient[1])) * LightColor[1] * buffer_texture_cubebgra8[x*4+1] * attenuation);if (d[1] > 255) d[1] = 255;
3198                                 d[2] = (int)((diffusetex[2] * (Color_Ambient[2])) * LightColor[2] * buffer_texture_cubebgra8[x*4+2] * attenuation);if (d[2] > 255) d[2] = 255;
3199                                 d[3] = (int)( diffusetex[3]                                                                                      );if (d[3] > 255) d[3] = 255;
3200                         }
3201                         else
3202                         {
3203                                 d[0] = (int)((diffusetex[0] * (Color_Ambient[0])) * LightColor[0]                                   * attenuation);if (d[0] > 255) d[0] = 255;
3204                                 d[1] = (int)((diffusetex[1] * (Color_Ambient[1])) * LightColor[1]                                   * attenuation);if (d[1] > 255) d[1] = 255;
3205                                 d[2] = (int)((diffusetex[2] * (Color_Ambient[2])) * LightColor[2]                                   * attenuation);if (d[2] > 255) d[2] = 255;
3206                                 d[3] = (int)( diffusetex[3]                                                                                                                                                                );if (d[3] > 255) d[3] = 255;
3207                         }
3208                         buffer_FragColorbgra8[x*4+0] = d[0];
3209                         buffer_FragColorbgra8[x*4+1] = d[1];
3210                         buffer_FragColorbgra8[x*4+2] = d[2];
3211                         buffer_FragColorbgra8[x*4+3] = d[3];
3212                 }
3213         }
3214         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
3215 }
3216
3217
3218
3219 void DPSOFTRAST_VertexShader_Refraction(void)
3220 {
3221         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
3222 }
3223
3224 void DPSOFTRAST_PixelShader_Refraction(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
3225 {
3226         // TODO: IMPLEMENT
3227         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
3228         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
3229         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
3230         memset(buffer_FragColorbgra8, 0, span->length*4);
3231         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
3232 }
3233
3234
3235
3236 void DPSOFTRAST_VertexShader_Water(void)
3237 {
3238         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
3239 }
3240
3241
3242 void DPSOFTRAST_PixelShader_Water(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
3243 {
3244         // TODO: IMPLEMENT
3245         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
3246         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
3247         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
3248         memset(buffer_FragColorbgra8, 0, span->length*4);
3249         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
3250 }
3251
3252
3253
3254 void DPSOFTRAST_VertexShader_ShowDepth(void)
3255 {
3256         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
3257 }
3258
3259 void DPSOFTRAST_PixelShader_ShowDepth(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
3260 {
3261         // TODO: IMPLEMENT
3262         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
3263         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
3264         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
3265         memset(buffer_FragColorbgra8, 0, span->length*4);
3266         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
3267 }
3268
3269
3270
3271 void DPSOFTRAST_VertexShader_DeferredGeometry(void)
3272 {
3273         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
3274 }
3275
3276 void DPSOFTRAST_PixelShader_DeferredGeometry(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
3277 {
3278         // TODO: IMPLEMENT
3279         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
3280         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
3281         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
3282         memset(buffer_FragColorbgra8, 0, span->length*4);
3283         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
3284 }
3285
3286
3287
3288 void DPSOFTRAST_VertexShader_DeferredLightSource(void)
3289 {
3290         DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
3291 }
3292
3293 void DPSOFTRAST_PixelShader_DeferredLightSource(const DPSOFTRAST_State_Draw_Span * RESTRICT span)
3294 {
3295         // TODO: IMPLEMENT
3296         float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
3297         unsigned char buffer_FragColorbgra8[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
3298         DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
3299         memset(buffer_FragColorbgra8, 0, span->length*4);
3300         DPSOFTRAST_Draw_Span_FinishBGRA8(span, buffer_FragColorbgra8);
3301 }
3302
3303
3304
3305 typedef struct DPSOFTRAST_ShaderModeInfo_s
3306 {
3307         int lodarrayindex;
3308         void (*Vertex)(void);
3309         void (*Span)(const DPSOFTRAST_State_Draw_Span * RESTRICT span);
3310 }
3311 DPSOFTRAST_ShaderModeInfo;
3312
3313 DPSOFTRAST_ShaderModeInfo DPSOFTRAST_ShaderModeTable[SHADERMODE_COUNT] =
3314 {
3315         {2, DPSOFTRAST_VertexShader_Generic,                        DPSOFTRAST_PixelShader_Generic,                      },
3316         {2, DPSOFTRAST_VertexShader_PostProcess,                    DPSOFTRAST_PixelShader_PostProcess,                  },
3317         {2, DPSOFTRAST_VertexShader_Depth_Or_Shadow,                DPSOFTRAST_PixelShader_Depth_Or_Shadow,              },
3318         {2, DPSOFTRAST_VertexShader_FlatColor,                      DPSOFTRAST_PixelShader_FlatColor,                    },
3319         {2, DPSOFTRAST_VertexShader_VertexColor,                    DPSOFTRAST_PixelShader_VertexColor,                  },
3320         {2, DPSOFTRAST_VertexShader_Lightmap,                       DPSOFTRAST_PixelShader_Lightmap,                     },
3321         {2, DPSOFTRAST_VertexShader_FakeLight,                      DPSOFTRAST_PixelShader_FakeLight,                    },
3322         {2, DPSOFTRAST_VertexShader_LightDirectionMap_ModelSpace,   DPSOFTRAST_PixelShader_LightDirectionMap_ModelSpace, },
3323         {2, DPSOFTRAST_VertexShader_LightDirectionMap_TangentSpace, DPSOFTRAST_PixelShader_LightDirectionMap_TangentSpace},
3324         {2, DPSOFTRAST_VertexShader_LightDirection,                 DPSOFTRAST_PixelShader_LightDirection,               },
3325         {2, DPSOFTRAST_VertexShader_LightSource,                    DPSOFTRAST_PixelShader_LightSource,                  },
3326         {2, DPSOFTRAST_VertexShader_Refraction,                     DPSOFTRAST_PixelShader_Refraction,                   },
3327         {2, DPSOFTRAST_VertexShader_Water,                          DPSOFTRAST_PixelShader_Water,                        },
3328         {2, DPSOFTRAST_VertexShader_ShowDepth,                      DPSOFTRAST_PixelShader_ShowDepth,                    },
3329         {2, DPSOFTRAST_VertexShader_DeferredGeometry,               DPSOFTRAST_PixelShader_DeferredGeometry,             },
3330         {2, DPSOFTRAST_VertexShader_DeferredLightSource,            DPSOFTRAST_PixelShader_DeferredLightSource,          }
3331 };
3332
3333
3334
3335 void DPSOFTRAST_Draw_ProcessSpans(void)
3336 {
3337         int i;
3338         int x;
3339         int startx;
3340         int endx;
3341         int numspans = dpsoftrast.draw.numspans;
3342 //      unsigned int c;
3343 //      unsigned int *colorpixel;
3344         unsigned int *depthpixel;
3345         float w;
3346         float wslope;
3347         int depth;
3348         int depthslope;
3349         unsigned int d;
3350         DPSOFTRAST_State_Draw_Span *span = dpsoftrast.draw.spanqueue;
3351         unsigned char pixelmask[DPSOFTRAST_DRAW_MAXSPANLENGTH];
3352         for (i = 0;i < numspans;i++, span++)
3353         {
3354                 w = span->data[0][DPSOFTRAST_ARRAY_TOTAL][3];
3355                 wslope = span->data[1][DPSOFTRAST_ARRAY_TOTAL][3];
3356                 if (dpsoftrast.user.depthtest && dpsoftrast.fb_depthpixels)
3357                 {
3358                         depth = (int)(w*DPSOFTRAST_DEPTHSCALE);
3359                         depthslope = (int)(wslope*DPSOFTRAST_DEPTHSCALE);
3360                         depthpixel = dpsoftrast.fb_depthpixels + span->start;
3361                         switch(dpsoftrast.fb_depthfunc)
3362                         {
3363                         default:
3364                         case GL_ALWAYS:  for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = true; break;
3365                         case GL_LESS:    for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] < d; break;
3366                         case GL_LEQUAL:  for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] <= d; break;
3367                         case GL_EQUAL:   for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] == d; break;
3368                         case GL_GEQUAL:  for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] >= d; break;
3369                         case GL_GREATER: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] > d; break;
3370                         case GL_NEVER:   for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = false; break;
3371                         }
3372                         //colorpixel = dpsoftrast.fb_colorpixels[0] + span->start;
3373                         //for (x = 0;x < span->length;x++)
3374                         //      colorpixel[x] = (depthpixel[x] & 0xFF000000) ? (0x00FF0000) : (depthpixel[x] & 0x00FF0000);
3375                         // if there is no color buffer, skip pixel shader
3376                         startx = 0;
3377                         endx = span->length;
3378                         while (startx < endx && !pixelmask[startx])
3379                                 startx++;
3380                         while (endx > startx && !pixelmask[endx-1])
3381                                 endx--;
3382                         if (startx >= endx)
3383                                 continue; // no pixels to fill
3384                         span->pixelmask = pixelmask;
3385                         span->startx = startx;
3386                         span->endx = endx;
3387                         // run pixel shader if appropriate
3388                         // do this before running depthmask code, to allow the pixelshader
3389                         // to clear pixelmask values for alpha testing
3390                         if (dpsoftrast.fb_colorpixels[0] && dpsoftrast.fb_colormask)
3391                                 DPSOFTRAST_ShaderModeTable[dpsoftrast.shader_mode].Span(span);
3392                         if (dpsoftrast.user.depthmask)
3393                                 for (x = 0, d = depth;x < span->length;x++, d += depthslope)
3394                                         if (pixelmask[x])
3395                                                 depthpixel[x] = d;
3396                 }
3397                 else
3398                 {
3399                         // no depth testing means we're just dealing with color...
3400                         // if there is no color buffer, skip pixel shader
3401                         if (dpsoftrast.fb_colorpixels[0] && dpsoftrast.fb_colormask)
3402                         {
3403                                 memset(pixelmask, 1, span->length);
3404                                 span->pixelmask = pixelmask;
3405                                 span->startx = 0;
3406                                 span->endx = span->length;
3407                                 DPSOFTRAST_ShaderModeTable[dpsoftrast.shader_mode].Span(span);
3408                         }
3409                 }
3410         }
3411 }
3412
3413 void DPSOFTRAST_Draw_ProcessTriangles(int firstvertex, int numtriangles, const int *element3i, const unsigned short *element3s, unsigned char *arraymask)
3414 {
3415 #ifdef SSE2_PRESENT
3416         int cullface = dpsoftrast.user.cullface;
3417         int width = dpsoftrast.fb_width;
3418         int height = dpsoftrast.fb_height;
3419         int i;
3420         int j;
3421         int k;
3422         int y;
3423         int e[3];
3424         ALIGN(int screeny[4]);
3425         int starty, endy;
3426         int screenyless[4];
3427         int numpoints;
3428         int clipflags;
3429         int edge0p;
3430         int edge0n;
3431         int edge1p;
3432         int edge1n;
3433         int startx;
3434         int endx;
3435         float mip_edge0tc[2];
3436         float mip_edge1tc[2];
3437         float mip_edge0xy[2];
3438         float mip_edge1xy[2];
3439         float mip_edge0xymul;
3440         float mip_edge1xymul;
3441         float mip_edge0mip;
3442         float mip_edge1mip;
3443         float mipdensity;
3444         unsigned char mip[DPSOFTRAST_MAXTEXTUREUNITS];
3445         float startxf;
3446         float endxf;
3447         float edge0ylerp;
3448         float edge0yilerp;
3449         float edge1ylerp;
3450         float edge1yilerp;
3451         float edge0xf;
3452         float edge1xf;
3453         float spanilength;
3454         float startxlerp;
3455         float yc;
3456         float frac;
3457         float ifrac;
3458         //float trianglearea2;
3459         __m128 triangleedge[2];
3460         __m128 trianglenormal;
3461         ALIGN(float clipdist[4]);
3462         ALIGN(float clipped[DPSOFTRAST_ARRAY_TOTAL][4][4]);
3463         ALIGN(float screen[4][4]);
3464         __m128 proj[DPSOFTRAST_ARRAY_TOTAL][4];
3465         DPSOFTRAST_Texture *texture;
3466         DPSOFTRAST_State_Draw_Span *span;
3467         DPSOFTRAST_State_Draw_Span *oldspan;
3468         for (i = 0;i < numtriangles;i++)
3469         {
3470                 // generate the 3 edges of this triangle
3471                 // generate spans for the triangle - switch based on left split or right split classification of triangle
3472                 if (element3i)
3473                 {
3474                         e[0] = element3i[i*3+0] - firstvertex;
3475                         e[1] = element3i[i*3+1] - firstvertex;
3476                         e[2] = element3i[i*3+2] - firstvertex;
3477                 }
3478                 else if (element3s)
3479                 {
3480                         e[0] = element3s[i*3+0] - firstvertex;
3481                         e[1] = element3s[i*3+1] - firstvertex;
3482                         e[2] = element3s[i*3+2] - firstvertex;
3483                 }
3484                 else
3485                 {
3486                         e[0] = i*3+0;
3487                         e[1] = i*3+1;
3488                         e[2] = i*3+2;
3489                 }
3490                 {
3491                         __m128 v1 = _mm_load_ps(&dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4]);
3492                         triangleedge[0] = _mm_sub_ps(_mm_load_ps(&dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[0]*4]), v1);
3493                         triangleedge[1] = _mm_sub_ps(_mm_load_ps(&dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[2]*4]), v1);
3494                 }
3495                 // store normal in 2, 0, 1 order instead of 0, 1, 2 as it requires fewer shuffles and leaves z component accessible as scalar
3496                 trianglenormal = _mm_sub_ps(_mm_mul_ps(triangleedge[0], _mm_shuffle_ps(triangleedge[1], triangleedge[1], _MM_SHUFFLE(3, 0, 2, 1))),
3497                                                                         _mm_mul_ps(_mm_shuffle_ps(triangleedge[0], triangleedge[0], _MM_SHUFFLE(3, 0, 2, 1)), triangleedge[1]));
3498 #if 0
3499                 trianglenormal[2] = triangleedge[0][0] * triangleedge[1][1] - triangleedge[0][1] * triangleedge[1][0];
3500                 trianglenormal[0] = triangleedge[0][1] * triangleedge[1][2] - triangleedge[0][2] * triangleedge[1][1];
3501                 trianglenormal[1] = triangleedge[0][2] * triangleedge[1][0] - triangleedge[0][0] * triangleedge[1][2];
3502 #endif
3503                 // apply current cullface mode (this culls many triangles)
3504                 switch(cullface)
3505                 {
3506                 case GL_BACK:
3507                         if (_mm_ucomilt_ss(trianglenormal, _mm_setzero_ps()))
3508                                 continue;
3509                         break;
3510                 case GL_FRONT:
3511                         if (_mm_ucomigt_ss(trianglenormal, _mm_setzero_ps()))
3512                                 continue;
3513                         break;
3514                 }
3515 #if 0
3516                 trianglearea2 = trianglenormal[0] * trianglenormal[0] + trianglenormal[1] * trianglenormal[1] + trianglenormal[2] * trianglenormal[2];
3517                 // skip degenerate triangles, nothing good can come from them...
3518                 if (trianglearea2 == 0.0f)
3519                         continue;
3520 #endif
3521
3522                 // calculate distance from nearplane
3523                 clipdist[0] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[0]*4+2] + 1.0f;
3524                 clipdist[1] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+2] + 1.0f;
3525                 clipdist[2] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[2]*4+2] + 1.0f;
3526                 clipflags = 0;
3527                 if (clipdist[0] < 0.0f)
3528                         clipflags |= 1;
3529                 if (clipdist[1] < 0.0f)
3530                         clipflags |= 2;
3531                 if (clipdist[2] < 0.0f)
3532                         clipflags |= 4;
3533                 // clip triangle if necessary
3534                 switch(clipflags)
3535                 {
3536                 case 0: /*000*/
3537                         // triangle is entirely in front of nearplane
3538
3539                         // macros for clipping vertices
3540 #define CLIPPEDVERTEXLERP(k,p1,p2) \
3541                         frac = clipdist[p1] / (clipdist[p1] - clipdist[p2]);\
3542                         ifrac = 1.0f - frac;\
3543                         for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)\
3544                         {\
3545                                 /*if (arraymask[j])*/\
3546                                 {\
3547                                         clipped[j][k][0] = dpsoftrast.draw.post_array4f[j][e[p1]*4+0]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+0]*frac;\
3548                                         clipped[j][k][1] = dpsoftrast.draw.post_array4f[j][e[p1]*4+1]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+1]*frac;\
3549                                         clipped[j][k][2] = dpsoftrast.draw.post_array4f[j][e[p1]*4+2]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+2]*frac;\
3550                                         clipped[j][k][3] = dpsoftrast.draw.post_array4f[j][e[p1]*4+3]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+3]*frac;\
3551                                 }\
3552                         }\
3553                         DPSOFTRAST_Draw_ProjectVertices(screen[k], clipped[DPSOFTRAST_ARRAY_POSITION][k], 1)
3554 #define CLIPPEDVERTEXCOPY(k,p1) \
3555                         for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)\
3556                         {\
3557                                 /*if (arraymask[j])*/\
3558                                 {\
3559                                         clipped[j][k][0] = dpsoftrast.draw.post_array4f[j][e[p1]*4+0];\
3560                                         clipped[j][k][1] = dpsoftrast.draw.post_array4f[j][e[p1]*4+1];\
3561                                         clipped[j][k][2] = dpsoftrast.draw.post_array4f[j][e[p1]*4+2];\
3562                                         clipped[j][k][3] = dpsoftrast.draw.post_array4f[j][e[p1]*4+3];\
3563                                 }\
3564                         }\
3565                         screen[k][0] = dpsoftrast.draw.screencoord4f[e[p1]*4+0];\
3566                         screen[k][1] = dpsoftrast.draw.screencoord4f[e[p1]*4+1];\
3567                         screen[k][2] = dpsoftrast.draw.screencoord4f[e[p1]*4+2];\
3568                         screen[k][3] = dpsoftrast.draw.screencoord4f[e[p1]*4+3];
3569
3570                         CLIPPEDVERTEXCOPY(0,0);
3571                         CLIPPEDVERTEXCOPY(1,1);
3572                         CLIPPEDVERTEXCOPY(2,2);
3573                         numpoints = 3;
3574                         break;
3575                 case 1: /*100*/
3576                         CLIPPEDVERTEXLERP(0,0,1);
3577                         CLIPPEDVERTEXCOPY(1,1);
3578                         CLIPPEDVERTEXCOPY(2,2);
3579                         CLIPPEDVERTEXLERP(3,2,0);
3580                         numpoints = 4;
3581                         break;
3582                 case 2: /*010*/
3583                         CLIPPEDVERTEXCOPY(0,0);
3584                         CLIPPEDVERTEXLERP(1,0,1);
3585                         CLIPPEDVERTEXLERP(2,1,2);
3586                         CLIPPEDVERTEXCOPY(3,2);
3587                         numpoints = 4;
3588                         break;
3589                 case 3: /*110*/
3590                         CLIPPEDVERTEXLERP(0,1,2);
3591                         CLIPPEDVERTEXCOPY(1,2);
3592                         CLIPPEDVERTEXLERP(2,2,0);
3593                         numpoints = 3;
3594                         break;
3595                 case 4: /*001*/
3596                         CLIPPEDVERTEXCOPY(0,0);
3597                         CLIPPEDVERTEXCOPY(1,1);
3598                         CLIPPEDVERTEXLERP(2,1,2);
3599                         CLIPPEDVERTEXLERP(3,2,0);
3600                         numpoints = 4;
3601                         break;
3602                 case 5: /*101*/
3603                         CLIPPEDVERTEXLERP(0,0,1);
3604                         CLIPPEDVERTEXCOPY(1,1);
3605                         CLIPPEDVERTEXLERP(2,1,2);
3606                         numpoints = 3;
3607                         break;
3608                 case 6: /*011*/
3609                         CLIPPEDVERTEXCOPY(0,0);
3610                         CLIPPEDVERTEXLERP(1,0,1);
3611                         CLIPPEDVERTEXLERP(2,2,0);
3612                         numpoints = 3;
3613                         break;
3614                 case 7: /*111*/
3615                         // triangle is entirely behind nearplane
3616                         continue;
3617                 }
3618                 {
3619                         // calculate integer y coords for triangle points
3620                         __m128i screeni = _mm_packs_epi32(_mm_cvttps_epi32(_mm_shuffle_ps(_mm_load_ps(screen[0]), _mm_load_ps(screen[1]), _MM_SHUFFLE(1, 0, 1, 0))),
3621                                                                                   _mm_cvttps_epi32(_mm_shuffle_ps(_mm_load_ps(screen[2]), _mm_load_ps(screen[3]), _MM_SHUFFLE(1, 0, 1, 0)))),
3622                                         screenir, screenmin, screenmax;
3623                         if (numpoints <= 3) screeni = _mm_shuffle_epi32(screeni, _MM_SHUFFLE(2, 2, 1, 0));
3624                         screenir = _mm_shuffle_epi32(screeni, _MM_SHUFFLE(1, 0, 3, 2)),
3625                         screenmin = _mm_min_epi16(screeni, screenir);
3626                         screenmax = _mm_max_epi16(screeni, screenir);
3627                         screenmin = _mm_min_epi16(screenmin, _mm_shufflelo_epi16(screenmin, _MM_SHUFFLE(1, 0, 3, 2)));
3628                         screenmax = _mm_max_epi16(screenmax, _mm_shufflelo_epi16(screenmax, _MM_SHUFFLE(1, 0, 3, 2)));
3629                         screenmin = _mm_max_epi16(screenmin, _mm_setzero_si128());
3630                         screenmax = _mm_min_epi16(screenmax, _mm_setr_epi16(width-1, height-1, 0, 0, 0, 0, 0, 0));
3631                         // skip offscreen triangles
3632                         {
3633                                 __m128i cc = _mm_cmplt_epi16(screenmax, screenmin);
3634                                 if (_mm_extract_epi16(cc, 0)|_mm_extract_epi16(cc, 1))
3635                                         continue;
3636                         }
3637                         starty = _mm_extract_epi16(screenmin, 1);
3638                         endy = _mm_extract_epi16(screenmax, 1)+1;
3639                         _mm_store_si128((__m128i *)screeny, _mm_srai_epi32(screeni, 16));
3640                 }
3641
3642                 // okay, this triangle is going to produce spans, we'd better project
3643                 // the interpolants now (this is what gives perspective texturing),
3644                 // this consists of simply multiplying all arrays by the W coord
3645                 // (which is basically 1/Z), which will be undone per-pixel
3646                 // (multiplying by Z again) to get the perspective-correct array
3647                 // values
3648                 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
3649                 {
3650                         //if (arraymask[j])
3651                         {
3652                                 for (k = 0;k < numpoints;k++)
3653                                 {
3654                                         proj[j][k] = _mm_mul_ps(_mm_load_ps(clipped[j][k]), _mm_set1_ps(screen[k][3]));
3655                                 }
3656                         }
3657                 }
3658                 // adjust texture LOD by texture density, in the simplest way possible...
3659                 mip_edge0xy[0] = screen[0][0] - screen[1][0];
3660                 mip_edge0xy[1] = screen[0][1] - screen[1][1];
3661                 mip_edge1xy[0] = screen[2][0] - screen[1][0];
3662                 mip_edge1xy[1] = screen[2][1] - screen[1][1];
3663                 mip_edge0xymul = 1.0f / (mip_edge0xy[0]*mip_edge0xy[0]+mip_edge0xy[1]*mip_edge0xy[1]);
3664                 mip_edge1xymul = 1.0f / (mip_edge1xy[0]*mip_edge1xy[0]+mip_edge1xy[1]*mip_edge1xy[1]);
3665                 for (j = 0;j < DPSOFTRAST_MAXTEXTUREUNITS;j++)
3666                 {
3667                         texture = dpsoftrast.texbound[j];
3668                         if (texture)
3669                         {
3670                                 if (texture->filter <= DPSOFTRAST_TEXTURE_FILTER_LINEAR)
3671                                 {
3672                                         mip[j] = 0;
3673                                         continue;
3674                                 }
3675                                 k = DPSOFTRAST_ShaderModeTable[dpsoftrast.shader_mode].lodarrayindex;
3676                                 mip_edge0tc[0] = (clipped[k][0][0] - clipped[k][1][0]) * texture->mipmap[0][2];
3677                                 mip_edge0tc[1] = (clipped[k][0][1] - clipped[k][1][1]) * texture->mipmap[0][3];
3678                                 mip_edge1tc[0] = (clipped[k][2][0] - clipped[k][1][0]) * texture->mipmap[0][2];
3679                                 mip_edge1tc[1] = (clipped[k][2][1] - clipped[k][1][1]) * texture->mipmap[0][3];
3680                                 mip_edge0mip = (mip_edge0tc[0]*mip_edge0tc[0]+mip_edge0tc[1]*mip_edge0tc[1]) * mip_edge0xymul;
3681                                 mip_edge1mip = (mip_edge1tc[0]*mip_edge1tc[0]+mip_edge1tc[1]*mip_edge1tc[1]) * mip_edge1xymul;
3682                                 // this will be multiplied in the texturing routine by the texture resolution
3683                                 mipdensity = mip_edge0mip < mip_edge1mip ? mip_edge0mip : mip_edge1mip;
3684                                 y = (int)(log(mipdensity)/log(2.0f));
3685                                 if (y < 0)
3686                                         y = 0;
3687                                 if (y > texture->mipmaps - 1)
3688                                         y = texture->mipmaps - 1;
3689                                 mip[j] = y;
3690                         }
3691                 }
3692                 // iterate potential spans
3693                 // TODO: optimize?  if we figured out the edge order beforehand, this
3694                 //       could do loops over the edges in the proper order rather than
3695                 //       selecting them for each span
3696                 // TODO: optimize?  the edges could have data slopes calculated
3697                 // TODO: optimize?  the data slopes could be calculated as a plane
3698                 //       (2D slopes) to avoid any interpolation along edges at all
3699                 for (y = starty;y < endy;y++)
3700                 {
3701                         // get center of pixel y
3702                         yc = y;
3703                         // do the compares all at once
3704                         screenyless[0] = y <= screeny[0];
3705                         screenyless[1] = y <= screeny[1];
3706                         screenyless[2] = y <= screeny[2];
3707                         screenyless[3] = y <= screeny[3];
3708                         if (numpoints == 4)
3709                         {
3710                                 switch(screenyless[0] + screenyless[1] * 2 + screenyless[2] * 4 + screenyless[3] * 8)
3711                                 {
3712                                 case  0: /*0000*/ continue;
3713                                 case  1: /*1000*/ edge0p = 3;edge0n = 0;edge1p = 0;edge1n = 1;break;
3714                                 case  2: /*0100*/ edge0p = 0;edge0n = 1;edge1p = 1;edge1n = 2;break;
3715                                 case  3: /*1100*/ edge0p = 3;edge0n = 0;edge1p = 1;edge1n = 2;break;
3716                                 case  4: /*0010*/ edge0p = 1;edge0n = 2;edge1p = 2;edge1n = 3;break;
3717                                 case  5: /*1010*/ edge0p = 1;edge0n = 2;edge1p = 2;edge1n = 3;break; // concave - nonsense
3718                                 case  6: /*0110*/ edge0p = 0;edge0n = 1;edge1p = 2;edge1n = 3;break;
3719                                 case  7: /*1110*/ edge0p = 3;edge0n = 0;edge1p = 2;edge1n = 3;break;
3720                                 case  8: /*0001*/ edge0p = 2;edge0n = 3;edge1p = 3;edge1n = 0;break;
3721                                 case  9: /*1001*/ edge0p = 2;edge0n = 3;edge1p = 0;edge1n = 1;break;
3722                                 case 10: /*0101*/ edge0p = 2;edge0n = 3;edge1p = 1;edge1n = 2;break; // concave - nonsense
3723                                 case 11: /*1101*/ edge0p = 2;edge0n = 3;edge1p = 1;edge1n = 2;break;
3724                                 case 12: /*0011*/ edge0p = 1;edge0n = 2;edge1p = 3;edge1n = 0;break;
3725                                 case 13: /*1011*/ edge0p = 1;edge0n = 2;edge1p = 0;edge1n = 1;break;
3726                                 case 14: /*0111*/ edge0p = 0;edge0n = 1;edge1p = 3;edge1n = 0;break;
3727                                 case 15: /*1111*/ continue;
3728                                 }
3729                         }
3730                         else
3731                         {
3732                                 switch(screenyless[0] + screenyless[1] * 2 + screenyless[2] * 4)
3733                                 {
3734                                 case 0: /*000*/ continue;
3735                                 case 1: /*100*/ edge0p = 2;edge0n = 0;edge1p = 0;edge1n = 1;break;
3736                                 case 2: /*010*/ edge0p = 0;edge0n = 1;edge1p = 1;edge1n = 2;break;
3737                                 case 3: /*110*/ edge0p = 2;edge0n = 0;edge1p = 1;edge1n = 2;break;
3738                                 case 4: /*001*/ edge0p = 1;edge0n = 2;edge1p = 2;edge1n = 0;break;
3739                                 case 5: /*101*/ edge0p = 1;edge0n = 2;edge1p = 0;edge1n = 1;break;
3740                                 case 6: /*011*/ edge0p = 0;edge0n = 1;edge1p = 2;edge1n = 0;break;
3741                                 case 7: /*111*/ continue;
3742                                 }
3743                         }
3744 #if 0
3745                 {
3746                         int foundedges = 0;
3747                         int cedge0p = 0;
3748                         int cedge0n = 0;
3749                         int cedge1p = 0;
3750                         int cedge1n = 0;
3751                         for (j = 0, k = numpoints-1;j < numpoints;k = j, j++)
3752                         {
3753                                 if (screenyless[k] && !screenyless[j])
3754                                 {
3755                                         cedge1p = k;
3756                                         cedge1n = j;
3757                                         foundedges |= 1;
3758                                 }
3759                                 else if (screenyless[j] && !screenyless[k])
3760                                 {
3761                                         cedge0p = k;
3762                                         cedge0n = j;
3763                                         foundedges |= 2;
3764                                 }
3765                         }
3766                         if (foundedges != 3)
3767                                 continue;
3768                         if (cedge0p != edge0p || cedge0n != edge0n || cedge1p != edge1p || cedge1n != edge1n)
3769                         {
3770                                 if (numpoints == 4)
3771                                         printf("case %i%i%i%i is broken %i %i %i %i != %i %i %i %i\n", screenyless[0], screenyless[1], screenyless[2], screenyless[3], cedge0p, cedge0n, cedge1p, cedge1n, edge0p, edge0n, edge1p, edge1n);
3772                                 else
3773                                         printf("case %i%i%i is broken %i %i %i %i != %i %i %i %i\n", screenyless[0], screenyless[1], screenyless[2], cedge0p, cedge0n, cedge1p, cedge1n, edge0p, edge0n, edge1p, edge1n);
3774                         }
3775                 }
3776 #endif
3777                         edge0ylerp = (yc - screen[edge0p][1]) / (screen[edge0n][1] - screen[edge0p][1]);
3778                         edge1ylerp = (yc - screen[edge1p][1]) / (screen[edge1n][1] - screen[edge1p][1]);
3779                         if (edge0ylerp < 0 || edge0ylerp > 1 || edge1ylerp < 0 || edge1ylerp > 1)
3780                                 continue;
3781                         edge0yilerp = 1.0f - edge0ylerp;
3782                         edge1yilerp = 1.0f - edge1ylerp;
3783                         edge0xf = screen[edge0p][0] * edge0yilerp + screen[edge0n][0] * edge0ylerp;
3784                         edge1xf = screen[edge1p][0] * edge1yilerp + screen[edge1n][0] * edge1ylerp;
3785                         if (edge0xf < edge1xf)
3786                         {
3787                                 startxf = edge0xf;
3788                                 endxf = edge1xf;
3789                         }
3790                         else
3791                         {
3792                                 startxf = edge1xf;
3793                                 endxf = edge0xf;
3794                         }
3795                         startx = (int)ceil(startxf);
3796                         endx = (int)ceil(endxf);
3797                         if (startx < 0)
3798                                 startx = 0;
3799                         if (endx > width)
3800                                 endx = width;
3801                         if (startx >= endx)
3802                                 continue;
3803                         if (startxf > startx || endxf < endx-1) { printf("%s:%i X wrong (%i to %i is outside %f to %f)\n", __FILE__, __LINE__, startx, endx, startxf, endxf); }
3804                         spanilength = 1.0f / (endxf - startxf);
3805                         startxlerp = startx - startxf;
3806                         span = &dpsoftrast.draw.spanqueue[dpsoftrast.draw.numspans++];
3807                         memcpy(span->mip, mip, sizeof(span->mip));
3808                         span->start = y * width + startx;
3809                         span->length = endx - startx;
3810                         {
3811                                 __m128 edge0ylerpm = _mm_set1_ps(edge0ylerp), edge0yilerpm = _mm_set1_ps(edge0yilerp),
3812                                            edge1ylerpm = _mm_set1_ps(edge1ylerp), edge1yilerpm = _mm_set1_ps(edge1yilerp),
3813                                            spanilengthm = _mm_set1_ps(spanilength), startxlerpm = _mm_set1_ps(startxlerp),
3814                                            data0, data1;
3815                                 j = DPSOFTRAST_ARRAY_TOTAL;
3816                                 if (edge0xf < edge1xf)
3817                                 {
3818                                         data0 = _mm_add_ps(_mm_mul_ps(_mm_load_ps(screen[edge0p]), edge0yilerpm), _mm_mul_ps(_mm_load_ps(screen[edge0n]), edge0ylerpm));
3819                                         data1 = _mm_add_ps(_mm_mul_ps(_mm_load_ps(screen[edge1p]), edge1yilerpm), _mm_mul_ps(_mm_load_ps(screen[edge1n]), edge1ylerpm));
3820                                         data1 = _mm_mul_ps(_mm_sub_ps(data1, data0), spanilengthm);
3821                                         data0 = _mm_add_ps(data0, _mm_mul_ps(data1, startxlerpm));
3822                                         _mm_store_ps(span->data[0][j], data0);
3823                                         _mm_store_ps(span->data[1][j], data1);
3824                                         for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
3825                                         {
3826                                                 //if (arraymask[j])
3827                                                 {
3828                                                         data0 = _mm_add_ps(_mm_mul_ps(proj[j][edge0p], edge0yilerpm), _mm_mul_ps(proj[j][edge0n], edge0ylerpm));
3829                                                         data1 = _mm_add_ps(_mm_mul_ps(proj[j][edge1p], edge1yilerpm), _mm_mul_ps(proj[j][edge1n], edge1ylerpm));
3830                                                         data1 = _mm_mul_ps(_mm_sub_ps(data1, data0), spanilengthm);
3831                                                         data0 = _mm_add_ps(data0, _mm_mul_ps(data1, startxlerpm));
3832                                                         _mm_store_ps(span->data[0][j], data0);
3833                                                         _mm_store_ps(span->data[1][j], data1);
3834                                                 }
3835                                         }
3836                                 }
3837                                 else
3838                                 {
3839                                         data0 = _mm_add_ps(_mm_mul_ps(_mm_load_ps(screen[edge1p]), edge1yilerpm), _mm_mul_ps(_mm_load_ps(screen[edge1n]), edge1ylerpm));
3840                                         data1 = _mm_add_ps(_mm_mul_ps(_mm_load_ps(screen[edge0p]), edge0yilerpm), _mm_mul_ps(_mm_load_ps(screen[edge0n]), edge0ylerpm));
3841                                         data1 = _mm_mul_ps(_mm_sub_ps(data1, data0), spanilengthm);
3842                                         data0 = _mm_add_ps(data0, _mm_mul_ps(data1, startxlerpm));
3843                                         _mm_store_ps(span->data[0][j], data0);
3844                                         _mm_store_ps(span->data[1][j], data1);
3845                                         for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
3846                                         {
3847                                                 //if (arraymask[j])
3848                                                 {
3849                                                         data0 = _mm_add_ps(_mm_mul_ps(proj[j][edge1p], edge1yilerpm), _mm_mul_ps(proj[j][edge1n], edge1ylerpm));
3850                                                         data1 = _mm_add_ps(_mm_mul_ps(proj[j][edge0p], edge0yilerpm), _mm_mul_ps(proj[j][edge0n], edge0ylerpm));
3851                                                         data1 = _mm_mul_ps(_mm_sub_ps(data1, data0), spanilengthm);
3852                                                         data0 = _mm_add_ps(data0, _mm_mul_ps(data1, startxlerpm));
3853                                                         _mm_store_ps(span->data[0][j], data0);
3854                                                         _mm_store_ps(span->data[1][j], data1);
3855                                                 }
3856                                         }
3857                                 }
3858                         }
3859                         // to keep the shader routines from needing more than a small
3860                         // buffer for pixel intermediate data, we split long spans...
3861                         while (span->length > DPSOFTRAST_DRAW_MAXSPANLENGTH)
3862                         {
3863                                 __m128 maxspanlengthm;
3864                                 span->length = DPSOFTRAST_DRAW_MAXSPANLENGTH;
3865                                 if (dpsoftrast.draw.numspans >= DPSOFTRAST_DRAW_MAXSPANQUEUE)
3866                                 {
3867                                         DPSOFTRAST_Draw_ProcessSpans();
3868                                         dpsoftrast.draw.numspans = 0;
3869                                 }
3870                                 oldspan = span;
3871                                 span = &dpsoftrast.draw.spanqueue[dpsoftrast.draw.numspans++];
3872                                 *span = *oldspan;
3873                                 startx += DPSOFTRAST_DRAW_MAXSPANLENGTH;
3874                                 span->start = y * width + startx;
3875                                 span->length = endx - startx;
3876                                 j = DPSOFTRAST_ARRAY_TOTAL;
3877                                 maxspanlengthm = _mm_set1_ps(DPSOFTRAST_DRAW_MAXSPANLENGTH);
3878                                 _mm_store_ps(span->data[0][j], _mm_add_ps(_mm_load_ps(span->data[0][j]), _mm_mul_ps(_mm_load_ps(span->data[1][j]), maxspanlengthm)));
3879                                 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
3880                                 {
3881                                         //if (arraymask[j])
3882                                         {
3883                                                  _mm_store_ps(span->data[0][j], _mm_add_ps(_mm_load_ps(span->data[0][j]), _mm_mul_ps(_mm_load_ps(span->data[1][j]), maxspanlengthm)));
3884                                         }
3885                                 }
3886                         }
3887                         // after all that, we have a span suitable for the pixel shader...
3888                         if (dpsoftrast.draw.numspans >= DPSOFTRAST_DRAW_MAXSPANQUEUE)
3889                         {
3890                                 DPSOFTRAST_Draw_ProcessSpans();
3891                                 dpsoftrast.draw.numspans = 0;
3892                         }
3893                 }
3894                 // draw outlines over triangle for debugging
3895         //      for (j = 0, k = numpoints-1;j < numpoints;k = j, j++)
3896         //              DPSOFTRAST_Draw_DebugEdgePoints(screen[k], screen[j]);
3897         }
3898         if (dpsoftrast.draw.numspans)
3899         {
3900                 DPSOFTRAST_Draw_ProcessSpans();
3901                 dpsoftrast.draw.numspans = 0;
3902         }
3903 #endif
3904 }
3905
3906 void DPSOFTRAST_Draw_DebugPoints(void)
3907 {
3908         int i;
3909         int x;
3910         int y;
3911         int numvertices = dpsoftrast.draw.numvertices;
3912         int w = dpsoftrast.fb_width;
3913         int bounds[4];
3914         unsigned int *pixels = dpsoftrast.fb_colorpixels[0];
3915         const float *c4f;
3916         bounds[0] = dpsoftrast.fb_viewportscissor[0];
3917         bounds[1] = dpsoftrast.fb_viewportscissor[1];
3918         bounds[2] = dpsoftrast.fb_viewportscissor[0] + dpsoftrast.fb_viewportscissor[2];
3919         bounds[3] = dpsoftrast.fb_viewportscissor[1] + dpsoftrast.fb_viewportscissor[3];
3920         for (i = 0;i < numvertices;i++)
3921         {
3922                 // check nearclip
3923                 //if (dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+3] != 1.0f)
3924                 //      continue;
3925                 x = (int)(dpsoftrast.draw.screencoord4f[i*4+0]);
3926                 y = (int)(dpsoftrast.draw.screencoord4f[i*4+1]);
3927                 //x = (int)(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+0] + 0.5f);
3928                 //y = (int)(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+1] + 0.5f);
3929                 //x = (int)((dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+0] + 1.0f) * dpsoftrast.fb_width * 0.5f + 0.5f);
3930                 //y = (int)((dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+1] + 1.0f) * dpsoftrast.fb_height * 0.5f + 0.5f);
3931                 if (x < bounds[0] || y < bounds[1] || x >= bounds[2] || y >= bounds[3])
3932                         continue;
3933                 c4f = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR] + i*4;
3934                 pixels[y*w+x] = DPSOFTRAST_BGRA8_FROM_RGBA32F(c4f[0], c4f[1], c4f[2], c4f[3]);
3935         }
3936 }
3937
3938 void DPSOFTRAST_DrawTriangles(int firstvertex, int numvertices, int numtriangles, const int *element3i, const unsigned short *element3s)
3939 {
3940         unsigned char arraymask[DPSOFTRAST_ARRAY_TOTAL];
3941         arraymask[0] = true;
3942         arraymask[1] = dpsoftrast.fb_colorpixels[0] != NULL; // TODO: optimize (decide based on shadermode)
3943         arraymask[2] = dpsoftrast.pointer_texcoordf[0] != NULL;
3944         arraymask[3] = dpsoftrast.pointer_texcoordf[1] != NULL;
3945         arraymask[4] = dpsoftrast.pointer_texcoordf[2] != NULL;
3946         arraymask[5] = dpsoftrast.pointer_texcoordf[3] != NULL;
3947         arraymask[6] = dpsoftrast.pointer_texcoordf[4] != NULL;
3948         arraymask[7] = dpsoftrast.pointer_texcoordf[5] != NULL;
3949         arraymask[8] = dpsoftrast.pointer_texcoordf[6] != NULL;
3950         arraymask[9] = dpsoftrast.pointer_texcoordf[7] != NULL;
3951         DPSOFTRAST_Validate(DPSOFTRAST_VALIDATE_DRAW);
3952         DPSOFTRAST_Draw_LoadVertices(firstvertex, numvertices, true);
3953         DPSOFTRAST_ShaderModeTable[dpsoftrast.shader_mode].Vertex();
3954         DPSOFTRAST_Draw_ProjectVertices(dpsoftrast.draw.screencoord4f, dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], numvertices);
3955         DPSOFTRAST_Draw_ProcessTriangles(firstvertex, numtriangles, element3i, element3s, arraymask);
3956 }
3957
3958 void DPSOFTRAST_Init(int width, int height, unsigned int *colorpixels, unsigned int *depthpixels)
3959 {
3960         union
3961         {
3962                 int i;
3963                 unsigned char b[4];
3964         }
3965         u;
3966         u.i = 1;
3967         memset(&dpsoftrast, 0, sizeof(dpsoftrast));
3968         dpsoftrast.bigendian = u.b[3];
3969         dpsoftrast.fb_width = width;
3970         dpsoftrast.fb_height = height;
3971         dpsoftrast.fb_depthpixels = depthpixels;
3972         dpsoftrast.fb_colorpixels[0] = colorpixels;
3973         dpsoftrast.fb_colorpixels[1] = NULL;
3974         dpsoftrast.fb_colorpixels[1] = NULL;
3975         dpsoftrast.fb_colorpixels[1] = NULL;
3976         dpsoftrast.texture_firstfree = 1;
3977         dpsoftrast.texture_end = 1;
3978         dpsoftrast.texture_max = 0;
3979         dpsoftrast.user.colormask[0] = 1;
3980         dpsoftrast.user.colormask[1] = 1;
3981         dpsoftrast.user.colormask[2] = 1;
3982         dpsoftrast.user.colormask[3] = 1;
3983         dpsoftrast.user.blendfunc[0] = GL_ONE;
3984         dpsoftrast.user.blendfunc[1] = GL_ZERO;
3985         dpsoftrast.user.depthmask = true;
3986         dpsoftrast.user.depthtest = true;
3987         dpsoftrast.user.depthfunc = GL_LEQUAL;
3988         dpsoftrast.user.scissortest = false;
3989         dpsoftrast.user.cullface = GL_BACK;
3990         dpsoftrast.user.alphatest = false;
3991         dpsoftrast.user.alphafunc = GL_GREATER;
3992         dpsoftrast.user.alphavalue = 0.5f;
3993         dpsoftrast.user.scissor[0] = 0;
3994         dpsoftrast.user.scissor[1] = 0;
3995         dpsoftrast.user.scissor[2] = dpsoftrast.fb_width;
3996         dpsoftrast.user.scissor[3] = dpsoftrast.fb_height;
3997         dpsoftrast.user.viewport[0] = 0;
3998         dpsoftrast.user.viewport[1] = 0;
3999         dpsoftrast.user.viewport[2] = dpsoftrast.fb_width;
4000         dpsoftrast.user.viewport[3] = dpsoftrast.fb_height;
4001         dpsoftrast.user.depthrange[0] = 0;
4002         dpsoftrast.user.depthrange[1] = 1;
4003         dpsoftrast.user.polygonoffset[0] = 0;
4004         dpsoftrast.user.polygonoffset[1] = 0;
4005         dpsoftrast.user.color[0] = 1;
4006         dpsoftrast.user.color[1] = 1;
4007         dpsoftrast.user.color[2] = 1;
4008         dpsoftrast.user.color[3] = 1;
4009         dpsoftrast.validate = -1;
4010         DPSOFTRAST_Validate(-1);
4011         dpsoftrast.validate = 0;
4012 }
4013
4014 void DPSOFTRAST_Shutdown(void)
4015 {
4016         int i;
4017         for (i = 0;i < dpsoftrast.texture_end;i++)
4018                 if (dpsoftrast.texture[i].bytes)
4019                         MM_FREE(dpsoftrast.texture[i].bytes);
4020         if (dpsoftrast.texture)
4021                 free(dpsoftrast.texture);
4022         memset(&dpsoftrast, 0, sizeof(dpsoftrast));
4023 }
4024