diff --git a/Makefile b/Makefile index 3df83660..26ef512e 100644 --- a/Makefile +++ b/Makefile @@ -1664,6 +1664,7 @@ Q3R2OBJ = \ $(B)/renderergl2/tr_image_pcx.o \ $(B)/renderergl2/tr_image_png.o \ $(B)/renderergl2/tr_image_tga.o \ + $(B)/renderergl2/tr_image_dds.o \ $(B)/renderergl2/tr_init.o \ $(B)/renderergl2/tr_light.o \ $(B)/renderergl2/tr_main.o \ diff --git a/code/renderergl2/tr_image.c b/code/renderergl2/tr_image.c index 59d4fd8c..0b725beb 100644 --- a/code/renderergl2/tr_image.c +++ b/code/renderergl2/tr_image.c @@ -1615,13 +1615,16 @@ static qboolean RawImage_HasAlpha(const byte *scan, int numPixels) return qfalse; } -static GLenum RawImage_GetFormat(const byte *data, int numPixels, qboolean lightMap, imgType_t type, imgFlags_t flags) +static GLenum RawImage_GetFormat(const byte *data, int numPixels, GLenum picFormat, qboolean lightMap, imgType_t type, imgFlags_t flags) { int samples = 3; GLenum internalFormat = GL_RGB; qboolean forceNoCompression = (flags & IMGFLAG_NO_COMPRESSION); qboolean normalmap = (type == IMGTYPE_NORMAL || type == IMGTYPE_NORMALHEIGHT); + if (picFormat != GL_RGBA8) + return picFormat; + if(normalmap) { if ((type == IMGTYPE_NORMALHEIGHT) && RawImage_HasAlpha(data, numPixels)) @@ -1860,11 +1863,67 @@ static void RawImage_UploadToRgtc2Texture(byte *data, int width, int height, int } -static void RawImage_UploadTexture( byte *data, int x, int y, int width, int height, GLenum internalFormat, imgType_t type, imgFlags_t flags, qboolean subtexture ) +static void RawImage_UploadTexture( byte *data, int x, int y, int width, int height, GLenum picFormat, int numMips, GLenum internalFormat, imgType_t type, imgFlags_t flags, qboolean subtexture ) { int dataFormat, dataType; qboolean rgtc = (internalFormat == GL_COMPRESSED_RG_RGTC2); + if (picFormat != GL_RGBA8 && picFormat != GL_SRGB8_ALPHA8_EXT) + { + int bytesPer4x4Block = 0; + int miplevel = 0; + + switch (picFormat) + { + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + case GL_COMPRESSED_RED_RGTC1: + case GL_COMPRESSED_SIGNED_RED_RGTC1: + bytesPer4x4Block = 8; + break; + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: + case GL_COMPRESSED_RG_RGTC2: + case GL_COMPRESSED_SIGNED_RG_RGTC2: + case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB: + case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB: + case GL_COMPRESSED_RGBA_BPTC_UNORM_ARB: + case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB: + bytesPer4x4Block = 16; + break; + default: + ri.Printf(PRINT_ALL, "Unsupported texture format %08x\n", picFormat); + return; + break; + } + + for (miplevel = 0; miplevel < numMips; miplevel++) + { + int size; + + size = ((width + 3) / 4) * ((height + 3) / 4) * bytesPer4x4Block; + + if (subtexture) + qglCompressedTexSubImage2DARB(GL_TEXTURE_2D, miplevel, x, y, width, height, internalFormat, size, data); + else + qglCompressedTexImage2DARB(GL_TEXTURE_2D, miplevel, internalFormat, width, height, 0, size, data); + + x >>= 1; + y >>= 1; + x -= x % 4; + y -= y % 4; + + width = MAX(1, width >> 1); + height = MAX(1, height >> 1); + data += size; + } + + return; + } + switch(internalFormat) { case GL_DEPTH_COMPONENT: @@ -1948,7 +2007,7 @@ Upload32 =============== */ -static void Upload32(byte *data, int x, int y, int width, int height, image_t *image) +static void Upload32(byte *data, int x, int y, int width, int height, GLenum picFormat, int numMips, image_t *image) { byte *resampledBuffer = NULL; int i, c; @@ -1964,11 +2023,16 @@ static void Upload32(byte *data, int x, int y, int width, int height, image_t *i if (!data) { RawImage_ScaleToPower2(NULL, &width, &height, type, flags, NULL); - RawImage_UploadTexture(NULL, 0, 0, width, height, internalFormat, type, flags, qfalse); + RawImage_UploadTexture(NULL, 0, 0, width, height, GL_RGBA8, 0, internalFormat, type, flags, qfalse); goto done; } else if (!subtexture) { + if (picFormat != GL_RGBA8) + { + RawImage_UploadTexture(data, 0, 0, width, height, picFormat, numMips, internalFormat, type, flags, qfalse); + goto done; + } notScaled = RawImage_ScaleToPower2(&data, &width, &height, type, flags, &resampledBuffer); } @@ -2006,12 +2070,12 @@ static void Upload32(byte *data, int x, int y, int width, int height, image_t *i if (subtexture) { // FIXME: Incorrect if original texture was not a power of 2 texture or picmipped - RawImage_UploadTexture(data, x, y, width, height, internalFormat, type, flags, qtrue); + RawImage_UploadTexture(data, x, y, width, height, GL_RGBA8, 0, internalFormat, type, flags, qtrue); GL_CheckErrors(); return; } - RawImage_UploadTexture(data, 0, 0, width, height, internalFormat, type, flags, qfalse); + RawImage_UploadTexture(data, 0, 0, width, height, GL_RGBA8, 0, internalFormat, type, flags, qfalse); done: @@ -2061,12 +2125,12 @@ done: /* ================ -R_CreateImage +R_CreateImage2 This is the only way any image_t are created ================ */ -image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgType_t type, imgFlags_t flags, int internalFormat ) { +image_t *R_CreateImage2( const char *name, byte *pic, int width, int height, GLenum picFormat, int numMips, imgType_t type, imgFlags_t flags, int internalFormat ) { image_t *image; qboolean isLightmap = qfalse; long hash; @@ -2104,7 +2168,7 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgT if (image->flags & IMGFLAG_CUBEMAP) internalFormat = GL_RGBA8; else - internalFormat = RawImage_GetFormat(pic, width * height, isLightmap, image->type, image->flags); + internalFormat = RawImage_GetFormat(pic, width * height, picFormat, isLightmap, image->type, image->flags); } image->internalFormat = internalFormat; @@ -2155,7 +2219,7 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgT } else { - Upload32( pic, 0, 0, image->width, image->height, image ); + Upload32( pic, 0, 0, image->width, image->height, picFormat, numMips, image ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glWrapClampMode ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glWrapClampMode ); @@ -2170,6 +2234,20 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgT return image; } + +/* +================ +R_CreateImage + +Wrapper for R_CreateImage2(), for the old parameters. +================ +*/ +image_t *R_CreateImage(const char *name, byte *pic, int width, int height, imgType_t type, imgFlags_t flags, int internalFormat) +{ + return R_CreateImage2(name, pic, width, height, GL_RGBA8, 0, type, flags, internalFormat); +} + + void R_UpdateSubImage( image_t *image, byte *pic, int x, int y, int width, int height ) { if (qglActiveTextureARB) { @@ -2178,13 +2256,16 @@ void R_UpdateSubImage( image_t *image, byte *pic, int x, int y, int width, int h GL_Bind(image); - Upload32(pic, x, y, width, height, image); + Upload32(pic, x, y, width, height, GL_RGBA8, 0, image); GL_SelectTexture(0); } //=================================================================== +// Prototype for dds loader function which isn't common to both renderers +void R_LoadDDS(const char *filename, byte **pic, int *width, int *height, GLenum *picFormat, int *numMips); + typedef struct { char *ext; @@ -2213,7 +2294,7 @@ Loads any of the supported image types into a cannonical 32 bit format. ================= */ -void R_LoadImage( const char *name, byte **pic, int *width, int *height ) +void R_LoadImage( const char *name, byte **pic, int *width, int *height, GLenum *picFormat, int *numMips ) { qboolean orgNameFailed = qfalse; int orgLoader = -1; @@ -2225,11 +2306,28 @@ void R_LoadImage( const char *name, byte **pic, int *width, int *height ) *pic = NULL; *width = 0; *height = 0; + *picFormat = GL_RGBA8; + *numMips = 0; Q_strncpyz( localName, name, MAX_QPATH ); ext = COM_GetExtension( localName ); + // If compressed textures are enabled, try loading a DDS first, it'll load fastest + if (r_ext_compressed_textures->integer) + { + char ddsName[MAX_QPATH]; + + COM_StripExtension(name, ddsName, MAX_QPATH); + Q_strcat(ddsName, MAX_QPATH, ".dds"); + + R_LoadDDS(ddsName, pic, width, height, picFormat, numMips); + + // If loaded, we're done. + if (*pic) + return; + } + if( *ext ) { // Look for the correct loader and use it @@ -2301,6 +2399,8 @@ image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags ) image_t *image; int width, height; byte *pic; + GLenum picFormat; + int picNumMips; long hash; if (!name) { @@ -2327,12 +2427,12 @@ image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags ) // // load the pic from disk // - R_LoadImage( name, &pic, &width, &height ); + R_LoadImage( name, &pic, &width, &height, &picFormat, &picNumMips ); if ( pic == NULL ) { return NULL; } - if (r_normalMapping->integer && !(type == IMGTYPE_NORMAL) && (flags & IMGFLAG_PICMIP) && (flags & IMGFLAG_MIPMAP) && (flags & IMGFLAG_GENNORMALMAP)) + if (r_normalMapping->integer && (picFormat == GL_RGBA8) && !(type == IMGTYPE_NORMAL) && (flags & IMGFLAG_PICMIP) && (flags & IMGFLAG_MIPMAP) && (flags & IMGFLAG_GENNORMALMAP)) { char normalName[MAX_QPATH]; image_t *normalImage; @@ -2435,7 +2535,7 @@ image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags ) } } - image = R_CreateImage( ( char * ) name, pic, width, height, type, flags, 0 ); + image = R_CreateImage2( ( char * ) name, pic, width, height, picFormat, picNumMips, type, flags, 0 ); ri.Free( pic ); return image; } diff --git a/code/renderergl2/tr_image_dds.c b/code/renderergl2/tr_image_dds.c new file mode 100644 index 00000000..578b3eda --- /dev/null +++ b/code/renderergl2/tr_image_dds.c @@ -0,0 +1,448 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. + 2015 James Canete + +This file is part of Quake III Arena source code. + +Quake III Arena source code is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 2 of the License, +or (at your option) any later version. + +Quake III Arena source code is distributed in the hope that it will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Quake III Arena source code; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +=========================================================================== +*/ + +#include "../renderercommon/tr_common.h" + +typedef unsigned int ui32_t; + +typedef struct ddsHeader_s +{ + ui32_t headerSize; + ui32_t flags; + ui32_t height; + ui32_t width; + ui32_t pitchOrFirstMipSize; + ui32_t volumeDepth; + ui32_t numMips; + ui32_t reserved1[11]; + ui32_t always_0x00000020; + ui32_t pixelFormatFlags; + ui32_t fourCC; + ui32_t rgbBitCount; + ui32_t rBitMask; + ui32_t gBitMask; + ui32_t bBitMask; + ui32_t aBitMask; + ui32_t caps; + ui32_t caps2; + ui32_t caps3; + ui32_t caps4; + ui32_t reserved2; +} +ddsHeader_t; + +// flags: +#define _DDSFLAGS_REQUIRED 0x001007 +#define _DDSFLAGS_PITCH 0x8 +#define _DDSFLAGS_MIPMAPCOUNT 0x20000 +#define _DDSFLAGS_FIRSTMIPSIZE 0x80000 +#define _DDSFLAGS_VOLUMEDEPTH 0x800000 + +// pixelFormatFlags: +#define DDSPF_ALPHAPIXELS 0x1 +#define DDSPF_ALPHA 0x2 +#define DDSPF_FOURCC 0x4 +#define DDSPF_RGB 0x40 +#define DDSPF_YUV 0x200 +#define DDSPF_LUMINANCE 0x20000 + +// caps: +#define DDSCAPS_COMPLEX 0x8 +#define DDSCAPS_MIPMAP 0x400000 +#define DDSCAPS_REQUIRED 0x1000 + +// caps2: +#define DDSCAPS2_CUBEMAP 0xFE00 +#define DDSCAPS2_VOLUME 0x200000 + +typedef struct ddsHeaderDxt10_s +{ + ui32_t dxgiFormat; + ui32_t dimensions; + ui32_t miscFlags; + ui32_t arraySize; + ui32_t miscFlags2; +} +ddsHeaderDxt10_t; + +// dxgiFormat +// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb173059%28v=vs.85%29.aspx +typedef enum DXGI_FORMAT { + DXGI_FORMAT_UNKNOWN = 0, + DXGI_FORMAT_R32G32B32A32_TYPELESS = 1, + DXGI_FORMAT_R32G32B32A32_FLOAT = 2, + DXGI_FORMAT_R32G32B32A32_UINT = 3, + DXGI_FORMAT_R32G32B32A32_SINT = 4, + DXGI_FORMAT_R32G32B32_TYPELESS = 5, + DXGI_FORMAT_R32G32B32_FLOAT = 6, + DXGI_FORMAT_R32G32B32_UINT = 7, + DXGI_FORMAT_R32G32B32_SINT = 8, + DXGI_FORMAT_R16G16B16A16_TYPELESS = 9, + DXGI_FORMAT_R16G16B16A16_FLOAT = 10, + DXGI_FORMAT_R16G16B16A16_UNORM = 11, + DXGI_FORMAT_R16G16B16A16_UINT = 12, + DXGI_FORMAT_R16G16B16A16_SNORM = 13, + DXGI_FORMAT_R16G16B16A16_SINT = 14, + DXGI_FORMAT_R32G32_TYPELESS = 15, + DXGI_FORMAT_R32G32_FLOAT = 16, + DXGI_FORMAT_R32G32_UINT = 17, + DXGI_FORMAT_R32G32_SINT = 18, + DXGI_FORMAT_R32G8X24_TYPELESS = 19, + DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20, + DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21, + DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22, + DXGI_FORMAT_R10G10B10A2_TYPELESS = 23, + DXGI_FORMAT_R10G10B10A2_UNORM = 24, + DXGI_FORMAT_R10G10B10A2_UINT = 25, + DXGI_FORMAT_R11G11B10_FLOAT = 26, + DXGI_FORMAT_R8G8B8A8_TYPELESS = 27, + DXGI_FORMAT_R8G8B8A8_UNORM = 28, + DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29, + DXGI_FORMAT_R8G8B8A8_UINT = 30, + DXGI_FORMAT_R8G8B8A8_SNORM = 31, + DXGI_FORMAT_R8G8B8A8_SINT = 32, + DXGI_FORMAT_R16G16_TYPELESS = 33, + DXGI_FORMAT_R16G16_FLOAT = 34, + DXGI_FORMAT_R16G16_UNORM = 35, + DXGI_FORMAT_R16G16_UINT = 36, + DXGI_FORMAT_R16G16_SNORM = 37, + DXGI_FORMAT_R16G16_SINT = 38, + DXGI_FORMAT_R32_TYPELESS = 39, + DXGI_FORMAT_D32_FLOAT = 40, + DXGI_FORMAT_R32_FLOAT = 41, + DXGI_FORMAT_R32_UINT = 42, + DXGI_FORMAT_R32_SINT = 43, + DXGI_FORMAT_R24G8_TYPELESS = 44, + DXGI_FORMAT_D24_UNORM_S8_UINT = 45, + DXGI_FORMAT_R24_UNORM_X8_TYPELESS = 46, + DXGI_FORMAT_X24_TYPELESS_G8_UINT = 47, + DXGI_FORMAT_R8G8_TYPELESS = 48, + DXGI_FORMAT_R8G8_UNORM = 49, + DXGI_FORMAT_R8G8_UINT = 50, + DXGI_FORMAT_R8G8_SNORM = 51, + DXGI_FORMAT_R8G8_SINT = 52, + DXGI_FORMAT_R16_TYPELESS = 53, + DXGI_FORMAT_R16_FLOAT = 54, + DXGI_FORMAT_D16_UNORM = 55, + DXGI_FORMAT_R16_UNORM = 56, + DXGI_FORMAT_R16_UINT = 57, + DXGI_FORMAT_R16_SNORM = 58, + DXGI_FORMAT_R16_SINT = 59, + DXGI_FORMAT_R8_TYPELESS = 60, + DXGI_FORMAT_R8_UNORM = 61, + DXGI_FORMAT_R8_UINT = 62, + DXGI_FORMAT_R8_SNORM = 63, + DXGI_FORMAT_R8_SINT = 64, + DXGI_FORMAT_A8_UNORM = 65, + DXGI_FORMAT_R1_UNORM = 66, + DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67, + DXGI_FORMAT_R8G8_B8G8_UNORM = 68, + DXGI_FORMAT_G8R8_G8B8_UNORM = 69, + DXGI_FORMAT_BC1_TYPELESS = 70, + DXGI_FORMAT_BC1_UNORM = 71, + DXGI_FORMAT_BC1_UNORM_SRGB = 72, + DXGI_FORMAT_BC2_TYPELESS = 73, + DXGI_FORMAT_BC2_UNORM = 74, + DXGI_FORMAT_BC2_UNORM_SRGB = 75, + DXGI_FORMAT_BC3_TYPELESS = 76, + DXGI_FORMAT_BC3_UNORM = 77, + DXGI_FORMAT_BC3_UNORM_SRGB = 78, + DXGI_FORMAT_BC4_TYPELESS = 79, + DXGI_FORMAT_BC4_UNORM = 80, + DXGI_FORMAT_BC4_SNORM = 81, + DXGI_FORMAT_BC5_TYPELESS = 82, + DXGI_FORMAT_BC5_UNORM = 83, + DXGI_FORMAT_BC5_SNORM = 84, + DXGI_FORMAT_B5G6R5_UNORM = 85, + DXGI_FORMAT_B5G5R5A1_UNORM = 86, + DXGI_FORMAT_B8G8R8A8_UNORM = 87, + DXGI_FORMAT_B8G8R8X8_UNORM = 88, + DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89, + DXGI_FORMAT_B8G8R8A8_TYPELESS = 90, + DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91, + DXGI_FORMAT_B8G8R8X8_TYPELESS = 92, + DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93, + DXGI_FORMAT_BC6H_TYPELESS = 94, + DXGI_FORMAT_BC6H_UF16 = 95, + DXGI_FORMAT_BC6H_SF16 = 96, + DXGI_FORMAT_BC7_TYPELESS = 97, + DXGI_FORMAT_BC7_UNORM = 98, + DXGI_FORMAT_BC7_UNORM_SRGB = 99, + DXGI_FORMAT_AYUV = 100, + DXGI_FORMAT_Y410 = 101, + DXGI_FORMAT_Y416 = 102, + DXGI_FORMAT_NV12 = 103, + DXGI_FORMAT_P010 = 104, + DXGI_FORMAT_P016 = 105, + DXGI_FORMAT_420_OPAQUE = 106, + DXGI_FORMAT_YUY2 = 107, + DXGI_FORMAT_Y210 = 108, + DXGI_FORMAT_Y216 = 109, + DXGI_FORMAT_NV11 = 110, + DXGI_FORMAT_AI44 = 111, + DXGI_FORMAT_IA44 = 112, + DXGI_FORMAT_P8 = 113, + DXGI_FORMAT_A8P8 = 114, + DXGI_FORMAT_B4G4R4A4_UNORM = 115, + DXGI_FORMAT_FORCE_UINT = 0xffffffffUL +} DXGI_FORMAT; + +#define EncodeFourCC(x) ((((ui32_t)((x)[0])) ) | \ + (((ui32_t)((x)[1])) << 8 ) | \ + (((ui32_t)((x)[2])) << 16) | \ + (((ui32_t)((x)[3])) << 24) ) + + +void R_LoadDDS ( const char *filename, byte **pic, int *width, int *height, GLenum *picFormat, int *numMips ) +{ + union { + byte *b; + void *v; + } buffer; + int len; + ddsHeader_t *ddsHeader = NULL; + ddsHeaderDxt10_t *ddsHeaderDxt10 = NULL; + byte *data; + + if (!picFormat) + { + ri.Printf(PRINT_ERROR, "R_LoadDDS() called without picFormat parameter!"); + return; + } + + if (width) + *width = 0; + if (height) + *height = 0; + if (picFormat) + *picFormat = GL_RGBA8; + if (numMips) + *numMips = 1; + + *pic = NULL; + + // + // load the file + // + len = ri.FS_ReadFile( ( char * ) filename, &buffer.v); + if (!buffer.b || len < 0) { + return; + } + + // + // reject files that are too small to hold even a header + // + if (len < 4 + sizeof(*ddsHeader)) + { + ri.Printf(PRINT_ALL, "File %s is too small to be a DDS file.\n", filename); + ri.FS_FreeFile(buffer.v); + return; + } + + // + // reject files that don't start with "DDS " + // + if (*((ui32_t *)(buffer.b)) != EncodeFourCC("DDS ")) + { + ri.Printf(PRINT_ALL, "File %s is not a DDS file.\n", filename); + ri.FS_FreeFile(buffer.v); + return; + } + + // + // parse header and dx10 header if available + // + ddsHeader = (ddsHeader_t *)(buffer.b + 4); + if ((ddsHeader->pixelFormatFlags & DDSPF_FOURCC) && ddsHeader->fourCC == EncodeFourCC("DX10")) + { + if (len < 4 + sizeof(*ddsHeader) + sizeof(*ddsHeaderDxt10)) + { + ri.Printf(PRINT_ALL, "File %s indicates a DX10 header it is too small to contain.\n", filename); + ri.FS_FreeFile(buffer.v); + return; + } + + ddsHeaderDxt10 = (ddsHeaderDxt10_t *)(buffer.b + 4 + sizeof(ddsHeader_t)); + data = buffer.b + 4 + sizeof(*ddsHeader) + sizeof(*ddsHeaderDxt10); + len -= 4 + sizeof(*ddsHeader) + sizeof(*ddsHeaderDxt10); + } + else + { + data = buffer.b + 4 + sizeof(*ddsHeader); + len -= 4 + sizeof(*ddsHeader); + } + + *width = ddsHeader->width; + *height = ddsHeader->height; + + if (ddsHeader->flags & _DDSFLAGS_MIPMAPCOUNT) + *numMips = ddsHeader->numMips; + else + *numMips = 1; + + // FIXME: handle cube map + //if ((ddsHeader->caps2 & DDSCAPS2_CUBEMAP) == DDSCAPS2_CUBEMAP) + + // + // Convert DXGI format/FourCC into OpenGL format + // + if (ddsHeaderDxt10) + { + switch (ddsHeaderDxt10->dxgiFormat) + { + case DXGI_FORMAT_BC1_TYPELESS: + case DXGI_FORMAT_BC1_UNORM: + // FIXME: check for GL_COMPRESSED_RGBA_S3TC_DXT1_EXT + *picFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; + break; + + case DXGI_FORMAT_BC1_UNORM_SRGB: + // FIXME: check for GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT + *picFormat = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT; + break; + + case DXGI_FORMAT_BC2_TYPELESS: + case DXGI_FORMAT_BC2_UNORM: + *picFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; + break; + + case DXGI_FORMAT_BC2_UNORM_SRGB: + *picFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT; + break; + + case DXGI_FORMAT_BC3_TYPELESS: + case DXGI_FORMAT_BC3_UNORM: + *picFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; + break; + + case DXGI_FORMAT_BC3_UNORM_SRGB: + *picFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT; + break; + + case DXGI_FORMAT_BC4_TYPELESS: + case DXGI_FORMAT_BC4_UNORM: + *picFormat = GL_COMPRESSED_RED_RGTC1; + break; + + case DXGI_FORMAT_BC4_SNORM: + *picFormat = GL_COMPRESSED_SIGNED_RED_RGTC1; + break; + + case DXGI_FORMAT_BC5_TYPELESS: + case DXGI_FORMAT_BC5_UNORM: + *picFormat = GL_COMPRESSED_RG_RGTC2; + break; + + case DXGI_FORMAT_BC5_SNORM: + *picFormat = GL_COMPRESSED_SIGNED_RG_RGTC2; + break; + + case DXGI_FORMAT_BC6H_TYPELESS: + case DXGI_FORMAT_BC6H_UF16: + *picFormat = GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB; + break; + + case DXGI_FORMAT_BC6H_SF16: + *picFormat = GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB; + break; + + case DXGI_FORMAT_BC7_TYPELESS: + case DXGI_FORMAT_BC7_UNORM: + *picFormat = GL_COMPRESSED_RGBA_BPTC_UNORM_ARB; + break; + + case DXGI_FORMAT_BC7_UNORM_SRGB: + *picFormat = GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB; + break; + + case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB: + *picFormat = GL_SRGB8_ALPHA8_EXT; + break; + + case DXGI_FORMAT_R8G8B8A8_UNORM: + case DXGI_FORMAT_R8G8B8A8_SNORM: + *picFormat = GL_RGBA8; + break; + + default: + ri.Printf(PRINT_ALL, "DDS File %s has unsupported DXGI format %d.", filename, ddsHeaderDxt10->dxgiFormat); + ri.FS_FreeFile(buffer.v); + return; + break; + } + } + else + { + if (ddsHeader->pixelFormatFlags & DDSPF_FOURCC) + { + if (ddsHeader->fourCC == EncodeFourCC("DXT1")) + *picFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; + else if (ddsHeader->fourCC == EncodeFourCC("DXT2")) + *picFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; + else if (ddsHeader->fourCC == EncodeFourCC("DXT3")) + *picFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; + else if (ddsHeader->fourCC == EncodeFourCC("DXT4")) + *picFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; + else if (ddsHeader->fourCC == EncodeFourCC("DXT5")) + *picFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; + else if (ddsHeader->fourCC == EncodeFourCC("ATI1")) + *picFormat = GL_COMPRESSED_RED_RGTC1; + else if (ddsHeader->fourCC == EncodeFourCC("BC4U")) + *picFormat = GL_COMPRESSED_RED_RGTC1; + else if (ddsHeader->fourCC == EncodeFourCC("BC4S")) + *picFormat = GL_COMPRESSED_SIGNED_RED_RGTC1; + else if (ddsHeader->fourCC == EncodeFourCC("ATI2")) + *picFormat = GL_COMPRESSED_RG_RGTC2; + else if (ddsHeader->fourCC == EncodeFourCC("BC5U")) + *picFormat = GL_COMPRESSED_RG_RGTC2; + else if (ddsHeader->fourCC == EncodeFourCC("BC5S")) + *picFormat = GL_COMPRESSED_SIGNED_RG_RGTC2; + else + { + ri.Printf(PRINT_ALL, "DDS File %s has unsupported FourCC.", filename); + ri.FS_FreeFile(buffer.v); + return; + } + } + else if (ddsHeader->pixelFormatFlags == (DDSPF_RGB | DDSPF_ALPHAPIXELS) + && ddsHeader->rgbBitCount == 32 + && ddsHeader->rBitMask == 0x000000ff + && ddsHeader->gBitMask == 0x0000ff00 + && ddsHeader->bBitMask == 0x00ff0000 + && ddsHeader->aBitMask == 0xff000000) + { + *picFormat = GL_RGBA8; + } + else + { + ri.Printf(PRINT_ALL, "DDS File %s has unsupported RGBA format.", filename); + ri.FS_FreeFile(buffer.v); + return; + } + } + + *pic = ri.Malloc(len); + Com_Memcpy(*pic, data, len); + + ri.FS_FreeFile(buffer.v); +}