gl_models.c

   1
   2 #include "quakedef.h"
   3 #include "r_shadow.h"
   4
   5 void GL_Models_Init(void)
   6 {
   7 }
   8
   9 static texture_t r_aliasnotexture;
  10 static texture_t *R_FetchAliasSkin(const entity_render_t *ent, const aliasmesh_t *mesh)
  11 {
  12         model_t *model = ent->model;
  13         if (model->numskins)
  14         {
  15                 int s = ent->skinnum;
  16                 if ((unsigned int)s >= (unsigned int)model->numskins)
  17                         s = 0;
  18                 if (model->skinscenes[s].framecount > 1)
  19                         s = model->skinscenes[s].firstframe + (unsigned int) (r_refdef.time * model->skinscenes[s].framerate) % model->skinscenes[s].framecount;
  20                 else
  21                         s = model->skinscenes[s].firstframe;
  22                 if (s >= mesh->num_skins)
  23                         s = 0;
  24                 return mesh->data_skins + s;
  25         }
  26         else
  27         {
  28                 memset(&r_aliasnotexture, 0, sizeof(r_aliasnotexture));
  29                 r_aliasnotexture.skin.base = r_texture_notexture;
  30                 return &r_aliasnotexture;
  31         }
  32 }
  33
  34 static void R_DrawAliasModelCallback (const void *calldata1, int calldata2)
  35 {
  36         int c, fbbase, fbpants, fbshirt, doglow;
  37         float tint[3], fog, ifog, colorscale, ambientcolor4f[4], diffusecolor[3], diffusenormal[3], colorbase[3], colorpants[3], colorshirt[3];
  38         float *vertex3f, *normal3f;
  39         vec3_t diff;
  40         qbyte *bcolor;
  41         rmeshstate_t m;
  42         const entity_render_t *ent = calldata1;
  43         aliasmesh_t *mesh = ent->model->alias.aliasdata_meshes + calldata2;
  44         texture_t *texture;
  45
  46         R_Mesh_Matrix(&ent->matrix);
  47
  48         fog = 0;
  49         if (fogenabled)
  50         {
  51                 VectorSubtract(ent->origin, r_vieworigin, diff);
  52                 fog = DotProduct(diff,diff);
  53                 if (fog < 0.01f)
  54                         fog = 0.01f;
  55                 fog = exp(fogdensity/fog);
  56                 if (fog > 1)
  57                         fog = 1;
  58                 if (fog < 0.01f)
  59                         fog = 0;
  60                 // fog method: darken, additive fog
  61                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
  62                 // 2. render fog as additive
  63         }
  64         ifog = 1 - fog;
  65
  66         VectorScale(ent->colormod, ifog, colorbase);
  67         VectorClear(colorpants);
  68         VectorClear(colorshirt);
  69         fbbase = ent->effects & EF_FULLBRIGHT;
  70         fbpants = fbbase;
  71         fbshirt = fbbase;
  72         if (ent->colormap >= 0)
  73         {
  74                 // 128-224 are backwards ranges
  75                 c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
  76                 if (c >= 224)
  77                         fbpants = true;
  78                 bcolor = (qbyte *) (&palette_complete[c]);
  79                 colorpants[0] = colorbase[0] * bcolor[0] * (1.0f / 255.0f);
  80                 colorpants[1] = colorbase[1] * bcolor[1] * (1.0f / 255.0f);
  81                 colorpants[2] = colorbase[2] * bcolor[2] * (1.0f / 255.0f);
  82                 // 128-224 are backwards ranges
  83                 c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
  84                 if (c >= 224)
  85                         fbshirt = true;
  86                 bcolor = (qbyte *) (&palette_complete[c]);
  87                 colorshirt[0] = colorbase[0] * bcolor[0] * (1.0f / 255.0f);
  88                 colorshirt[1] = colorbase[1] * bcolor[1] * (1.0f / 255.0f);
  89                 colorshirt[2] = colorbase[2] * bcolor[2] * (1.0f / 255.0f);
  90         }
  91
  92         texture = R_FetchAliasSkin(ent, mesh);
  93
  94         if ((ent->effects & EF_ADDITIVE))
  95         {
  96                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
  97                 GL_DepthMask(false);
  98         }
  99         else if (texture->skin.fog || ent->alpha != 1.0)
 100         {
 101                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 102                 GL_DepthMask(false);
 103         }
 104         else
 105         {
 106                 GL_BlendFunc(GL_ONE, GL_ZERO);
 107                 GL_DepthMask(true);
 108         }
 109         GL_DepthTest(!(ent->effects & EF_NODEPTHTEST));
 110         colorscale = 1.0f;
 111         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 112         {
 113                 vertex3f = mesh->data_basevertex3f;
 114                 normal3f = mesh->data_basenormal3f;
 115         }
 116         else
 117         {
 118                 vertex3f = varray_vertex3f;
 119                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 120                 normal3f = NULL;
 121         }
 122
 123         doglow = texture->skin.glow != NULL;
 124
 125         memset(&m, 0, sizeof(m));
 126         m.pointer_vertex = vertex3f;
 127         m.pointer_texcoord[0] = mesh->data_texcoord2f;
 128         if (gl_combine.integer)
 129         {
 130                 colorscale *= 0.25f;
 131                 m.texrgbscale[0] = 4;
 132         }
 133
 134         m.tex[0] = R_GetTexture((ent->colormap >= 0 || !texture->skin.merged) ? texture->skin.base : texture->skin.merged);
 135         VectorScale(colorbase, colorscale, tint);
 136         m.pointer_color = NULL;
 137         if (fbbase)
 138                 GL_Color(tint[0], tint[1], tint[2], ent->alpha);
 139         else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0], tint[1], tint[2], ent->alpha, false))
 140         {
 141                 m.pointer_color = varray_color4f;
 142                 if (normal3f == NULL)
 143                 {
 144                         normal3f = varray_normal3f;
 145                         Mod_BuildNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 146                 }
 147                 R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 148         }
 149         else
 150                 GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 151         if (gl_combine.integer && doglow)
 152         {
 153                 doglow = false;
 154                 m.tex[1] = R_GetTexture(texture->skin.glow);
 155                 m.pointer_texcoord[1] = mesh->data_texcoord2f;
 156                 m.texcombinergb[1] = GL_ADD;
 157         }
 158         R_Mesh_State(&m);
 159         c_alias_polys += mesh->num_triangles;
 160         GL_LockArrays(0, mesh->num_vertices);
 161         R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 162         GL_LockArrays(0, 0);
 163         m.tex[1] = 0;
 164         m.pointer_texcoord[1] = NULL;
 165         m.texcombinergb[1] = 0;
 166
 167         VectorScale(colorpants, colorscale, tint);
 168         if (ent->colormap >= 0 && texture->skin.pants && VectorLength2(tint) >= 0.001)
 169         {
 170                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 171                 GL_DepthMask(false);
 172                 m.tex[0] = R_GetTexture(texture->skin.pants);
 173                 m.pointer_color = NULL;
 174                 if (fbpants)
 175                         GL_Color(tint[0], tint[1], tint[2], ent->alpha);
 176                 else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0], tint[1], tint[2], ent->alpha, false))
 177                 {
 178                         m.pointer_color = varray_color4f;
 179                         if (normal3f == NULL)
 180                         {
 181                                 normal3f = varray_normal3f;
 182                                 Mod_BuildNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 183                         }
 184                         R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 185                 }
 186                 else
 187                         GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 188                 R_Mesh_State(&m);
 189                 c_alias_polys += mesh->num_triangles;
 190                 GL_LockArrays(0, mesh->num_vertices);
 191                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 192                 GL_LockArrays(0, 0);
 193         }
 194
 195         VectorScale(colorshirt, colorscale, tint);
 196         if (ent->colormap >= 0 && texture->skin.shirt && VectorLength2(tint) >= 0.001)
 197         {
 198                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 199                 GL_DepthMask(false);
 200                 m.tex[0] = R_GetTexture(texture->skin.shirt);
 201                 m.pointer_color = NULL;
 202                 if (fbshirt)
 203                         GL_Color(tint[0], tint[1], tint[2], ent->alpha);
 204                 else if (R_LightModel(ambientcolor4f, diffusecolor, diffusenormal, ent, tint[0], tint[1], tint[2], ent->alpha, false))
 205                 {
 206                         m.pointer_color = varray_color4f;
 207                         if (normal3f == NULL)
 208                         {
 209                                 normal3f = varray_normal3f;
 210                                 Mod_BuildNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, normal3f);
 211                         }
 212                         R_LightModel_CalcVertexColors(ambientcolor4f, diffusecolor, diffusenormal, mesh->num_vertices, vertex3f, normal3f, varray_color4f);
 213                 }
 214                 else
 215                         GL_Color(ambientcolor4f[0], ambientcolor4f[1], ambientcolor4f[2], ambientcolor4f[3]);
 216                 R_Mesh_State(&m);
 217                 c_alias_polys += mesh->num_triangles;
 218                 GL_LockArrays(0, mesh->num_vertices);
 219                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 220                 GL_LockArrays(0, 0);
 221         }
 222
 223         colorscale = 1;
 224         m.texrgbscale[0] = 0;
 225         m.pointer_color = NULL;
 226
 227         if (doglow)
 228         {
 229                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 230                 GL_DepthMask(false);
 231                 m.tex[0] = R_GetTexture(texture->skin.glow);
 232                 GL_Color(1, 1, 1, ent->alpha);
 233                 R_Mesh_State(&m);
 234                 c_alias_polys += mesh->num_triangles;
 235                 GL_LockArrays(0, mesh->num_vertices);
 236                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 237                 GL_LockArrays(0, 0);
 238         }
 239
 240         if (fog > 0)
 241         {
 242                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 243                 GL_DepthMask(false);
 244                 m.tex[0] = R_GetTexture(texture->skin.fog);
 245                 GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], fog * ent->alpha);
 246                 R_Mesh_State(&m);
 247                 c_alias_polys += mesh->num_triangles;
 248                 GL_LockArrays(0, mesh->num_vertices);
 249                 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
 250                 GL_LockArrays(0, 0);
 251         }
 252 }
 253
 254 void R_Model_Alias_Draw(entity_render_t *ent)
 255 {
 256         int meshnum;
 257         aliasmesh_t *mesh;
 258         if (ent->alpha < (1.0f / 64.0f))
 259                 return; // basically completely transparent
 260
 261         c_models++;
 262
 263         for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 264         {
 265                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchAliasSkin(ent, mesh)->skin.fog)
 266                         R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : ent->origin, R_DrawAliasModelCallback, ent, meshnum);
 267                 else
 268                         R_DrawAliasModelCallback(ent, meshnum);
 269         }
 270 }
 271
 272 void R_Model_Alias_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
 273 {
 274         int meshnum;
 275         aliasmesh_t *mesh;
 276         texture_t *texture;
 277         float projectdistance, *vertex3f;
 278         if (!(ent->flags & RENDER_SHADOW))
 279                 return;
 280         // check the box in modelspace, it was already checked in worldspace
 281         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 282                 return;
 283         projectdistance = lightradius + ent->model->radius;// - sqrt(DotProduct(relativelightorigin, relativelightorigin));
 284         if (projectdistance > 0.1)
 285         {
 286                 R_Mesh_Matrix(&ent->matrix);
 287                 for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 288                 {
 289                         texture = R_FetchAliasSkin(ent, mesh);
 290                         if (texture->skin.fog)
 291                                 continue;
 292                         if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 293                                 vertex3f = mesh->data_basevertex3f;
 294                         else
 295                         {
 296                                 vertex3f = varray_vertex3f;
 297                                 Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 298                         }
 299                         // identify lit faces within the bounding box
 300                         R_Shadow_PrepareShadowMark(mesh->num_triangles);
 301                         R_Shadow_MarkVolumeFromBox(0, mesh->num_triangles, vertex3f, mesh->data_element3i, relativelightorigin, lightmins, lightmaxs, ent->model->normalmins, ent->model->normalmaxs);
 302                         R_Shadow_VolumeFromList(mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_element3i, mesh->data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 303                 }
 304         }
 305 }
 306
 307 void R_Model_Alias_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist)
 308 {
 309         int c, meshnum;
 310         float fog, ifog, lightcolorbase[3], lightcolorpants[3], lightcolorshirt[3];
 311         float *vertex3f, *svector3f, *tvector3f, *normal3f;
 312         vec3_t diff;
 313         qbyte *bcolor;
 314         aliasmesh_t *mesh;
 315         texture_t *texture;
 316
 317         R_Mesh_Matrix(&ent->matrix);
 318
 319         fog = 0;
 320         if (fogenabled)
 321         {
 322                 VectorSubtract(ent->origin, r_vieworigin, diff);
 323                 fog = DotProduct(diff,diff);
 324                 if (fog < 0.01f)
 325                         fog = 0.01f;
 326                 fog = exp(fogdensity/fog);
 327                 if (fog > 1)
 328                         fog = 1;
 329                 if (fog < 0.01f)
 330                         fog = 0;
 331                 // fog method: darken, additive fog
 332                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 333                 // 2. render fog as additive
 334         }
 335         ifog = 1 - fog;
 336
 337         VectorScale(lightcolor, ifog, lightcolorbase);
 338         if (VectorLength2(lightcolorbase) < 0.001)
 339                 return;
 340         VectorClear(lightcolorpants);
 341         VectorClear(lightcolorshirt);
 342         if (ent->colormap >= 0)
 343         {
 344                 // 128-224 are backwards ranges
 345                 c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
 346                 // fullbright passes were already taken care of, so skip them in realtime lighting passes
 347                 if (c < 224)
 348                 {
 349                         bcolor = (qbyte *) (&palette_complete[c]);
 350                         lightcolorpants[0] = lightcolorbase[0] * bcolor[0] * (1.0f / 255.0f);
 351                         lightcolorpants[1] = lightcolorbase[1] * bcolor[1] * (1.0f / 255.0f);
 352                         lightcolorpants[2] = lightcolorbase[2] * bcolor[2] * (1.0f / 255.0f);
 353                 }
 354                 // 128-224 are backwards ranges
 355                 c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
 356                 // fullbright passes were already taken care of, so skip them in realtime lighting passes
 357                 if (c < 224)
 358                 {
 359                         bcolor = (qbyte *) (&palette_complete[c]);
 360                         lightcolorshirt[0] = lightcolorbase[0] * bcolor[0] * (1.0f / 255.0f);
 361                         lightcolorshirt[1] = lightcolorbase[1] * bcolor[1] * (1.0f / 255.0f);
 362                         lightcolorshirt[2] = lightcolorbase[2] * bcolor[2] * (1.0f / 255.0f);
 363                 }
 364         }
 365
 366         for (meshnum = 0, mesh = ent->model->alias.aliasdata_meshes;meshnum < ent->model->alias.aliasnum_meshes;meshnum++, mesh++)
 367         {
 368                 texture = R_FetchAliasSkin(ent, mesh);
 369                 // FIXME: transparent skins need to be lit during the transparent render
 370                 if (texture->skin.fog)
 371                         continue;
 372                 if (ent->frameblend[0].frame == 0 && ent->frameblend[0].lerp == 1)
 373                 {
 374                         vertex3f = mesh->data_basevertex3f;
 375                         svector3f = mesh->data_basesvector3f;
 376                         tvector3f = mesh->data_basetvector3f;
 377                         normal3f = mesh->data_basenormal3f;
 378                 }
 379                 else
 380                 {
 381                         vertex3f = varray_vertex3f;
 382                         svector3f = varray_svector3f;
 383                         tvector3f = varray_tvector3f;
 384                         normal3f = varray_normal3f;
 385                         Mod_Alias_GetMesh_Vertex3f(ent->model, ent->frameblend, mesh, vertex3f);
 386                         Mod_BuildTextureVectorsAndNormals(0, mesh->num_vertices, mesh->num_triangles, vertex3f, mesh->data_texcoord2f, mesh->data_element3i, svector3f, tvector3f, normal3f);
 387                 }
 388                 c_alias_polys += mesh->num_triangles;
 389                 R_Shadow_RenderLighting(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i, vertex3f, svector3f, tvector3f, normal3f, mesh->data_texcoord2f, relativelightorigin, relativeeyeorigin, lightcolorbase, lightcolorpants, lightcolorshirt, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, (ent->colormap >= 0 || !texture->skin.merged) ? texture->skin.base : texture->skin.merged, ent->colormap >= 0 ? texture->skin.pants : 0, ent->colormap >= 0 ? texture->skin.shirt : 0, texture->skin.nmap, texture->skin.gloss, lightcubemap, ambientscale, diffusescale, specularscale);
 390         }
 391 }
 392