#include "image.h"
#include "jpeg.h"
#include "image_png.h"
+#include "intoverflow.h"
cvar_t gl_max_size = {CVAR_SAVE, "gl_max_size", "2048", "maximum allowed texture size, can be used to reduce video memory usage, limited by hardware capabilities (typically 2048, 4096, or 8192)"};
cvar_t gl_max_lightmapsize = {CVAR_SAVE, "gl_max_lightmapsize", "1024", "maximum allowed texture size for lightmap textures, use larger values to improve rendering speed, as long as there is enough video memory available (setting it too high for the hardware will cause very bad performance)"};
static textypeinfo_t textype_palette = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA , 3, GL_UNSIGNED_BYTE};
static textypeinfo_t textype_palette_alpha = {TEXTYPE_PALETTE, 1, 4, 4.0f, GL_BGRA , 4, GL_UNSIGNED_BYTE};
-static textypeinfo_t textype_palette_compress = {TEXTYPE_PALETTE, 1, 4, 0.5f, GL_BGRA , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
-static textypeinfo_t textype_palette_alpha_compress = {TEXTYPE_PALETTE, 1, 4, 1.0f, GL_BGRA , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
static textypeinfo_t textype_rgba = {TEXTYPE_RGBA , 4, 4, 4.0f, GL_RGBA , 3, GL_UNSIGNED_BYTE};
static textypeinfo_t textype_rgba_alpha = {TEXTYPE_RGBA , 4, 4, 4.0f, GL_RGBA , 4, GL_UNSIGNED_BYTE};
static textypeinfo_t textype_rgba_compress = {TEXTYPE_RGBA , 4, 4, 0.5f, GL_RGBA , GL_COMPRESSED_RGB_ARB, GL_UNSIGNED_BYTE};
static textypeinfo_t textype_shadowmap16 = {TEXTYPE_SHADOWMAP,2,2, 2.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT16_ARB, GL_UNSIGNED_SHORT};
static textypeinfo_t textype_shadowmap24 = {TEXTYPE_SHADOWMAP,4,4, 4.0f, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT24_ARB, GL_UNSIGNED_INT};
static textypeinfo_t textype_alpha = {TEXTYPE_ALPHA , 1, 4, 4.0f, GL_ALPHA , 4, GL_UNSIGNED_BYTE};
-static textypeinfo_t textype_alpha_compress = {TEXTYPE_ALPHA , 1, 4, 1.0f, GL_ALPHA , GL_COMPRESSED_RGBA_ARB, GL_UNSIGNED_BYTE};
+static textypeinfo_t textype_dxt1 = {TEXTYPE_DXT1 , 4, 0, 0.5f, 0 , GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0};
+static textypeinfo_t textype_dxt1a = {TEXTYPE_DXT1A , 4, 0, 0.5f, 0 , GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0};
+static textypeinfo_t textype_dxt3 = {TEXTYPE_DXT3 , 4, 0, 1.0f, 0 , GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0};
+static textypeinfo_t textype_dxt5 = {TEXTYPE_DXT5 , 4, 0, 1.0f, 0 , GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0};
typedef enum gltexturetype_e
{
gltexturetype_t;
static int gltexturetypeenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_RECTANGLE_ARB};
-static int gltexturetypebindingenums[GLTEXTURETYPE_TOTAL] = {GL_TEXTURE_BINDING_2D, GL_TEXTURE_BINDING_3D, GL_TEXTURE_BINDING_CUBE_MAP_ARB, GL_TEXTURE_BINDING_RECTANGLE_ARB};
static int gltexturetypedimensions[GLTEXTURETYPE_TOTAL] = {2, 3, 2, 2};
static int cubemapside[6] =
{
static textypeinfo_t *R_GetTexTypeInfo(textype_t textype, int flags)
{
- if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && vid.support.arb_texture_compression)
+ switch(textype)
{
- if (flags & TEXF_ALPHA)
- {
- switch(textype)
- {
- case TEXTYPE_PALETTE:
- return &textype_palette_alpha_compress;
- case TEXTYPE_RGBA:
- return &textype_rgba_alpha_compress;
- case TEXTYPE_BGRA:
- return &textype_bgra_alpha_compress;
- case TEXTYPE_ALPHA:
- return &textype_alpha_compress;
- default:
- Host_Error("R_GetTexTypeInfo: unknown texture format");
- return NULL;
- }
- }
+ case TEXTYPE_DXT1:
+ return &textype_dxt1;
+ case TEXTYPE_DXT1A:
+ return &textype_dxt1a;
+ case TEXTYPE_DXT3:
+ return &textype_dxt3;
+ case TEXTYPE_DXT5:
+ return &textype_dxt5;
+ case TEXTYPE_PALETTE:
+ return (flags & TEXF_ALPHA) ? &textype_palette_alpha : &textype_palette;
+ case TEXTYPE_RGBA:
+ if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && vid.support.arb_texture_compression)
+ return (flags & TEXF_ALPHA) ? &textype_rgba_alpha_compress : &textype_rgba_compress;
else
- {
- switch(textype)
- {
- case TEXTYPE_PALETTE:
- return &textype_palette_compress;
- case TEXTYPE_RGBA:
- return &textype_rgba_compress;
- case TEXTYPE_BGRA:
- return &textype_bgra_compress;
- case TEXTYPE_ALPHA:
- return &textype_alpha_compress;
- default:
- Host_Error("R_GetTexTypeInfo: unknown texture format");
- return NULL;
- }
- }
- }
- else
- {
- if (flags & TEXF_ALPHA)
- {
- switch(textype)
- {
- case TEXTYPE_PALETTE:
- return &textype_palette_alpha;
- case TEXTYPE_RGBA:
- return &textype_rgba_alpha;
- case TEXTYPE_BGRA:
- return &textype_bgra_alpha;
- case TEXTYPE_ALPHA:
- return &textype_alpha;
- default:
- Host_Error("R_GetTexTypeInfo: unknown texture format");
- return NULL;
- }
- }
+ return (flags & TEXF_ALPHA) ? &textype_rgba_alpha : &textype_rgba;
+ break;
+ case TEXTYPE_BGRA:
+ if ((flags & TEXF_COMPRESS) && gl_texturecompression.integer >= 1 && vid.support.arb_texture_compression)
+ return (flags & TEXF_ALPHA) ? &textype_bgra_alpha_compress : &textype_bgra_compress;
else
- {
- switch(textype)
- {
- case TEXTYPE_PALETTE:
- return &textype_palette;
- case TEXTYPE_RGBA:
- return &textype_rgba;
- case TEXTYPE_BGRA:
- return &textype_bgra;
- case TEXTYPE_SHADOWMAP:
- return (flags & TEXF_LOWPRECISION) ? &textype_shadowmap16 : &textype_shadowmap24;
- case TEXTYPE_ALPHA:
- return &textype_alpha;
- default:
- Host_Error("R_GetTexTypeInfo: unknown texture format");
- return NULL;
- }
- }
+ return (flags & TEXF_ALPHA) ? &textype_bgra_alpha : &textype_bgra;
+ break;
+ case TEXTYPE_ALPHA:
+ return &textype_alpha;
+ case TEXTYPE_SHADOWMAP:
+ return (flags & TEXF_LOWPRECISION) ? &textype_shadowmap16 : &textype_shadowmap24;
+ default:
+ Host_Error("R_GetTexTypeInfo: unknown texture format");
+ return NULL;
}
return NULL; // this line only to hush compiler warnings
}
// only update already uploaded images
if (glt->texnum && !(glt->flags & (TEXF_FORCENEAREST | TEXF_FORCELINEAR)))
{
- oldbindtexnum = R_Mesh_TexBound(0, gltexturetypebindingenums[glt->texturetype]);
+ oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
if (glt->flags & TEXF_MIPMAP)
{
// only update already uploaded images
if (glt->texnum && (glt->flags & TEXF_MIPMAP) == TEXF_MIPMAP)
{
- oldbindtexnum = R_Mesh_TexBound(0, gltexturetypebindingenums[glt->texturetype]);
+ oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_ANISOTROPY_EXT, old_aniso);CHECKGLERROR
// we need to restore the texture binding after finishing the upload
GL_ActiveTexture(0);
- oldbindtexnum = R_Mesh_TexBound(0, gltexturetypebindingenums[glt->texturetype]);
+ oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
// these are rounded up versions of the size to do better resampling
int i, size;
gltexture_t *glt;
gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
- textypeinfo_t *texinfo;
+ textypeinfo_t *texinfo, *texinfo2;
if (cls.state == ca_dedicated)
return NULL;
break;
case TEXTYPE_SHADOWMAP:
break;
+ case TEXTYPE_DXT1:
+ break;
+ case TEXTYPE_DXT1A:
+ case TEXTYPE_DXT3:
+ case TEXTYPE_DXT5:
+ flags |= TEXF_ALPHA;
+ break;
case TEXTYPE_ALPHA:
flags |= TEXF_ALPHA;
break;
Host_Error("R_LoadTexture: unknown texture type");
}
+ texinfo2 = R_GetTexTypeInfo(textype, flags);
+ if(size == width * height * depth * sides * texinfo->inputbytesperpixel)
+ texinfo = texinfo2;
+ else
+ Con_Printf ("R_LoadTexture: input size changed after alpha fallback\n");
+
glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
if (identifier)
strlcpy (glt->identifier, identifier, sizeof(glt->identifier));
return R_SetupTexture(rtexturepool, identifier, width, width, 1, 6, R_ShadowMapTextureFlags(precision, filter), TEXTYPE_SHADOWMAP, GLTEXTURETYPE_CUBEMAP, NULL, NULL);
}
+int R_SaveTextureDDSFile(rtexture_t *rt, const char *filename, qboolean skipuncompressed)
+{
+ gltexture_t *glt = (gltexture_t *)rt;
+ unsigned char *dds;
+ int oldbindtexnum;
+ int bytesperpixel = 0;
+ int bytesperblock = 0;
+ int dds_flags;
+ int dds_format_flags;
+ int dds_caps1;
+ int dds_caps2;
+ int ret;
+ int mip;
+ int mipmaps;
+ int mipinfo[16][4];
+ int ddssize = 128;
+ GLint internalformat;
+ const char *ddsfourcc;
+ if (!rt)
+ return -1; // NULL pointer
+ if (!strcmp(gl_version, "2.0.5885 WinXP Release"))
+ return -2; // broken driver - crashes on reading internal format
+ if (!qglGetTexLevelParameteriv)
+ return -2;
+ GL_ActiveTexture(0);
+ oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
+ qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+ qglGetTexLevelParameteriv(gltexturetypeenums[glt->texturetype], 0, GL_TEXTURE_INTERNAL_FORMAT, &internalformat);
+ switch(internalformat)
+ {
+ default: ddsfourcc = NULL;bytesperpixel = 4;break;
+ case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+ case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: ddsfourcc = "DXT1";bytesperblock = 8;break;
+ case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: ddsfourcc = "DXT3";bytesperblock = 16;break;
+ case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: ddsfourcc = "DXT5";bytesperblock = 16;break;
+ }
+ if (!bytesperblock && skipuncompressed)
+ return -3; // skipped
+ memset(mipinfo, 0, sizeof(mipinfo));
+ mipinfo[0][0] = glt->tilewidth;
+ mipinfo[0][1] = glt->tileheight;
+ mipmaps = 1;
+ if (glt->flags & TEXF_MIPMAP)
+ {
+ for (mip = 1;mip < 16;mip++)
+ {
+ mipinfo[mip][0] = mipinfo[mip-1][0] > 1 ? mipinfo[mip-1][0] >> 1 : 1;
+ mipinfo[mip][1] = mipinfo[mip-1][1] > 1 ? mipinfo[mip-1][1] >> 1 : 1;
+ if (mipinfo[mip][0] == 1 && mipinfo[mip][1] == 1)
+ {
+ mip++;
+ break;
+ }
+ }
+ mipmaps = mip;
+ }
+ for (mip = 0;mip < mipmaps;mip++)
+ {
+ mipinfo[mip][2] = bytesperblock ? ((mipinfo[mip][0]+3)/4)*((mipinfo[mip][1]+3)/4)*bytesperblock : mipinfo[mip][0]*mipinfo[mip][1]*bytesperpixel;
+ mipinfo[mip][3] = ddssize;
+ ddssize += mipinfo[mip][2];
+ }
+ dds = Mem_Alloc(tempmempool, ddssize);
+ if (!dds)
+ return -4;
+ dds_caps1 = 0x1000; // DDSCAPS_TEXTURE
+ dds_caps2 = 0;
+ if (bytesperblock)
+ {
+ dds_flags = 0x81007; // DDSD_CAPS | DDSD_PIXELFORMAT | DDSD_WIDTH | DDSD_HEIGHT | DDSD_LINEARSIZE
+ dds_format_flags = 0x4; // DDPF_FOURCC
+ }
+ else
+ {
+ dds_flags = 0x100F; // DDSD_CAPS | DDSD_PIXELFORMAT | DDSD_WIDTH | DDSD_HEIGHT | DDSD_PITCH
+ dds_format_flags = 0x41; // DDPF_RGB | DDPF_ALPHAPIXELS
+ }
+ if (mipmaps)
+ {
+ dds_flags |= 0x20000; // DDSD_MIPMAPCOUNT
+ dds_caps1 |= 0x400008; // DDSCAPS_MIPMAP | DDSCAPS_COMPLEX
+ }
+ memcpy(dds, "DDS ", 4);
+ StoreLittleLong(dds+4, ddssize);
+ StoreLittleLong(dds+8, dds_flags);
+ StoreLittleLong(dds+12, mipinfo[0][1]); // height
+ StoreLittleLong(dds+16, mipinfo[0][0]); // width
+ StoreLittleLong(dds+24, 1); // depth
+ StoreLittleLong(dds+28, mipmaps); // mipmaps
+ StoreLittleLong(dds+76, 32); // format size
+ StoreLittleLong(dds+80, dds_format_flags);
+ StoreLittleLong(dds+108, dds_caps1);
+ StoreLittleLong(dds+112, dds_caps2);
+ if (bytesperblock)
+ {
+ StoreLittleLong(dds+20, mipinfo[0][2]); // linear size
+ memcpy(dds+84, ddsfourcc, 4);
+ for (mip = 0;mip < mipmaps;mip++)
+ {
+ qglGetCompressedTexImageARB(gltexturetypeenums[glt->texturetype], mip, dds + mipinfo[mip][3]);CHECKGLERROR
+ }
+ }
+ else
+ {
+ StoreLittleLong(dds+20, mipinfo[0][0]*bytesperpixel); // pitch
+ StoreLittleLong(dds+88, bytesperpixel*8); // bits per pixel
+ dds[94] = dds[97] = dds[100] = dds[107] = 255; // bgra byte order masks
+ for (mip = 0;mip < mipmaps;mip++)
+ {
+ qglGetTexImage(gltexturetypeenums[glt->texturetype], mip, GL_BGRA, GL_UNSIGNED_BYTE, dds + mipinfo[mip][3]);CHECKGLERROR
+ }
+ }
+ qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+ ret = FS_WriteFile(filename, dds, ddssize);
+ Mem_Free(dds);
+ return ret ? ddssize : -5;
+}
+
+rtexture_t *R_LoadTextureDDSFile(rtexturepool_t *rtexturepool, const char *filename, int flags, qboolean *hasalphaflag, float *avgcolor)
+{
+ int i, size, dds_flags, dds_format_flags, dds_miplevels, dds_width, dds_height, textype;
+ int bytesperblock, bytesperpixel;
+ int mipcomplete;
+ gltexture_t *glt;
+ gltexturepool_t *pool = (gltexturepool_t *)rtexturepool;
+ textypeinfo_t *texinfo;
+ int mip, mipwidth, mipheight, mipsize;
+ unsigned int c;
+ GLint oldbindtexnum;
+ const unsigned char *mippixels, *ddspixels;
+ unsigned char *dds;
+ fs_offset_t ddsfilesize;
+ unsigned int ddssize;
+
+ if (cls.state == ca_dedicated)
+ return NULL;
+
+ dds = FS_LoadFile(filename, tempmempool, true, &ddsfilesize);
+ ddssize = ddsfilesize;
+
+ if (!dds)
+ return NULL; // not found
+
+ if (ddsfilesize <= 128 || memcmp(dds, "DDS ", 4) || ddssize < (unsigned int)BuffLittleLong(dds+4) || BuffLittleLong(dds+76) != 32)
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: not a DDS image\n", filename);
+ return NULL;
+ }
+
+ dds_flags = BuffLittleLong(dds+8);
+ dds_format_flags = BuffLittleLong(dds+80);
+ dds_miplevels = (BuffLittleLong(dds+108) & 0x400000) ? BuffLittleLong(dds+28) : 1;
+ dds_width = BuffLittleLong(dds+16);
+ dds_height = BuffLittleLong(dds+12);
+ ddspixels = dds + 128;
+
+ flags &= ~TEXF_ALPHA;
+ if ((dds_format_flags & 0x40) && BuffLittleLong(dds+88) == 32)
+ {
+ // very sloppy BGRA 32bit identification
+ textype = TEXTYPE_BGRA;
+ bytesperblock = 0;
+ bytesperpixel = 4;
+ size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(dds_width, dds_height), bytesperpixel);
+ if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: invalid BGRA DDS image\n", filename);
+ return NULL;
+ }
+ // check alpha
+ for (i = 3;i < size;i += 4)
+ if (ddspixels[i] < 255)
+ break;
+ if (i >= size)
+ flags &= ~TEXF_ALPHA;
+ }
+ else if (!memcmp(dds+84, "DXT1", 4))
+ {
+ // we need to find out if this is DXT1 (opaque) or DXT1A (transparent)
+ // LordHavoc: it is my belief that this does not infringe on the
+ // patent because it is not decoding pixels...
+ textype = TEXTYPE_DXT1;
+ bytesperblock = 8;
+ bytesperpixel = 0;
+ //size = ((dds_width+3)/4)*((dds_height+3)/4)*bytesperblock;
+ size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_width, 3), 4), INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_height, 3), 4)), bytesperblock);
+ if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: invalid DXT1 DDS image\n", filename);
+ return NULL;
+ }
+ for (i = 0;i < size;i += bytesperblock)
+ if (ddspixels[i+0] + ddspixels[i+1] * 256 <= ddspixels[i+2] + ddspixels[i+3] * 256)
+ break;
+ if (i < size)
+ textype = TEXTYPE_DXT1A;
+ else
+ flags &= ~TEXF_ALPHA;
+ }
+ else if (!memcmp(dds+84, "DXT3", 4))
+ {
+ textype = TEXTYPE_DXT3;
+ bytesperblock = 16;
+ bytesperpixel = 0;
+ size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_width, 3), 4), INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_height, 3), 4)), bytesperblock);
+ if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: invalid DXT3 DDS image\n", filename);
+ return NULL;
+ }
+ }
+ else if (!memcmp(dds+84, "DXT5", 4))
+ {
+ textype = TEXTYPE_DXT5;
+ bytesperblock = 16;
+ bytesperpixel = 0;
+ size = INTOVERFLOW_MUL(INTOVERFLOW_MUL(INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_width, 3), 4), INTOVERFLOW_DIV(INTOVERFLOW_ADD(dds_height, 3), 4)), bytesperblock);
+ if(INTOVERFLOW_ADD(128, size) > INTOVERFLOW_NORMALIZE(ddsfilesize))
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: invalid DXT5 DDS image\n", filename);
+ return NULL;
+ }
+ }
+ else
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: unrecognized/unsupported DDS format\n", filename);
+ return NULL;
+ }
+
+ // return whether this texture is transparent
+ if (hasalphaflag)
+ *hasalphaflag = (flags & TEXF_ALPHA) != 0;
+
+ // calculate average color if requested
+ if (avgcolor)
+ {
+ float f;
+ Vector4Clear(avgcolor);
+ if (bytesperblock)
+ {
+ for (i = bytesperblock == 16 ? 8 : 0;i < size;i += bytesperblock)
+ {
+ c = ddspixels[i] + 256*ddspixels[i+1] + 65536*ddspixels[i+2] + 16777216*ddspixels[i+3];
+ avgcolor[0] += ((c >> 11) & 0x1F) + ((c >> 27) & 0x1F);
+ avgcolor[1] += ((c >> 5) & 0x3F) + ((c >> 21) & 0x3F);
+ avgcolor[2] += ((c ) & 0x1F) + ((c >> 16) & 0x1F);
+ }
+ f = (float)bytesperblock / size;
+ avgcolor[0] *= (0.5f / 31.0f) * f;
+ avgcolor[1] *= (0.5f / 63.0f) * f;
+ avgcolor[2] *= (0.5f / 31.0f) * f;
+ avgcolor[3] = 1; // too hard to calculate
+ }
+ else
+ {
+ for (i = 0;i < size;i += 4)
+ {
+ avgcolor[0] += ddspixels[i+2];
+ avgcolor[1] += ddspixels[i+1];
+ avgcolor[2] += ddspixels[i];
+ avgcolor[3] += ddspixels[i+3];
+ }
+ f = (1.0f / 255.0f) * bytesperpixel / size;
+ avgcolor[0] *= f;
+ avgcolor[1] *= f;
+ avgcolor[2] *= f;
+ avgcolor[3] *= f;
+ }
+ }
+
+ if (dds_miplevels > 1)
+ flags |= TEXF_MIPMAP;
+ else
+ flags &= ~TEXF_MIPMAP;
+
+ // if S3TC is not supported, there's very little we can do about it
+ if (bytesperblock && !vid.support.ext_texture_compression_s3tc)
+ {
+ Mem_Free(dds);
+ Con_Printf("^1%s: DDS file is compressed but OpenGL driver does not support S3TC\n", filename);
+ return NULL;
+ }
+
+ texinfo = R_GetTexTypeInfo(textype, flags);
+
+ glt = (gltexture_t *)Mem_Alloc(texturemempool, sizeof(gltexture_t));
+ strlcpy (glt->identifier, filename, sizeof(glt->identifier));
+ glt->pool = pool;
+ glt->chain = pool->gltchain;
+ pool->gltchain = glt;
+ glt->inputwidth = dds_width;
+ glt->inputheight = dds_height;
+ glt->inputdepth = 1;
+ glt->flags = flags;
+ glt->textype = texinfo;
+ glt->texturetype = GLTEXTURETYPE_2D;
+ glt->inputdatasize = ddssize;
+ glt->glinternalformat = texinfo->glinternalformat;
+ glt->glformat = texinfo->glformat;
+ glt->gltype = texinfo->gltype;
+ glt->bytesperpixel = texinfo->internalbytesperpixel;
+ glt->sides = 1;
+ glt->gltexturetypeenum = gltexturetypeenums[glt->texturetype];
+ glt->tilewidth = dds_width;
+ glt->tileheight = dds_height;
+ glt->tiledepth = 1;
+
+ // texture uploading can take a while, so make sure we're sending keepalives
+ CL_KeepaliveMessage(false);
+
+ // upload the texture
+ // we need to restore the texture binding after finishing the upload
+ CHECKGLERROR
+ GL_ActiveTexture(0);
+ oldbindtexnum = R_Mesh_TexBound(0, gltexturetypeenums[glt->texturetype]);
+ qglGenTextures(1, (GLuint *)&glt->texnum);CHECKGLERROR
+ qglBindTexture(gltexturetypeenums[glt->texturetype], glt->texnum);CHECKGLERROR
+ mippixels = ddspixels;
+ mipwidth = dds_width;
+ mipheight = dds_height;
+ mipcomplete = false;
+ for (mip = 0;mip < dds_miplevels+1;mip++)
+ {
+ mipsize = bytesperblock ? ((mipwidth+3)/4)*((mipheight+3)/4)*bytesperblock : mipwidth*mipheight*bytesperpixel;
+ if (mippixels + mipsize > dds + ddssize)
+ break;
+ if (bytesperblock)
+ {
+ qglCompressedTexImage2DARB(GL_TEXTURE_2D, mip, glt->glinternalformat, mipwidth, mipheight, 0, mipsize, mippixels);CHECKGLERROR
+ }
+ else
+ {
+ qglTexImage2D(GL_TEXTURE_2D, mip, glt->glinternalformat, mipwidth, mipheight, 0, glt->glformat, glt->gltype, mippixels);CHECKGLERROR
+ }
+ mippixels += mipsize;
+ if (mipwidth <= 1 && mipheight <= 1)
+ {
+ mipcomplete = true;
+ break;
+ }
+ if (mipwidth > 1)
+ mipwidth >>= 1;
+ if (mipheight > 1)
+ mipheight >>= 1;
+ }
+ if (dds_miplevels > 1 && !mipcomplete)
+ {
+ // need to set GL_TEXTURE_MAX_LEVEL
+ qglTexParameteri(gltexturetypeenums[glt->texturetype], GL_TEXTURE_MAX_LEVEL, dds_miplevels - 1);CHECKGLERROR
+ }
+ GL_SetupTextureParameters(glt->flags, glt->textype->textype, glt->texturetype);
+ qglBindTexture(gltexturetypeenums[glt->texturetype], oldbindtexnum);CHECKGLERROR
+
+ Mem_Free(dds);
+ return (rtexture_t *)glt;
+}
+
int R_TextureWidth(rtexture_t *rt)
{
return rt ? ((gltexture_t *)rt)->inputwidth : 0;
projects / xonotic / darkplaces.git / blobdiff