mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-11-10 06:31:47 +00:00
OpenGL2: DDS (compressed textures) support.
This commit is contained in:
SmileTheory
parent
336419235a
commit
f965f3c66e
3 changed files with 564 additions and 15 deletions
1
Makefile
1
Makefile
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@ -1664,6 +1664,7 @@ Q3R2OBJ = \
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$(B)/renderergl2/tr_image_pcx.o \
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$(B)/renderergl2/tr_image_png.o \
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$(B)/renderergl2/tr_image_tga.o \
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$(B)/renderergl2/tr_image_dds.o \
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$(B)/renderergl2/tr_init.o \
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$(B)/renderergl2/tr_light.o \
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$(B)/renderergl2/tr_main.o \
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@ -1615,13 +1615,16 @@ static qboolean RawImage_HasAlpha(const byte *scan, int numPixels)
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return qfalse;
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}
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static GLenum RawImage_GetFormat(const byte *data, int numPixels, qboolean lightMap, imgType_t type, imgFlags_t flags)
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static GLenum RawImage_GetFormat(const byte *data, int numPixels, GLenum picFormat, qboolean lightMap, imgType_t type, imgFlags_t flags)
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{
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int samples = 3;
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GLenum internalFormat = GL_RGB;
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qboolean forceNoCompression = (flags & IMGFLAG_NO_COMPRESSION);
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qboolean normalmap = (type == IMGTYPE_NORMAL || type == IMGTYPE_NORMALHEIGHT);
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if (picFormat != GL_RGBA8)
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return picFormat;
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if(normalmap)
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{
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if ((type == IMGTYPE_NORMALHEIGHT) && RawImage_HasAlpha(data, numPixels))
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@ -1860,11 +1863,67 @@ static void RawImage_UploadToRgtc2Texture(byte *data, int width, int height, int
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}
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static void RawImage_UploadTexture( byte *data, int x, int y, int width, int height, GLenum internalFormat, imgType_t type, imgFlags_t flags, qboolean subtexture )
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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 )
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{
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int dataFormat, dataType;
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qboolean rgtc = (internalFormat == GL_COMPRESSED_RG_RGTC2);
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if (picFormat != GL_RGBA8 && picFormat != GL_SRGB8_ALPHA8_EXT)
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{
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int bytesPer4x4Block = 0;
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int miplevel = 0;
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switch (picFormat)
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{
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case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
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case GL_COMPRESSED_RED_RGTC1:
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case GL_COMPRESSED_SIGNED_RED_RGTC1:
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bytesPer4x4Block = 8;
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break;
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case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
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case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
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case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
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case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
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case GL_COMPRESSED_RG_RGTC2:
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case GL_COMPRESSED_SIGNED_RG_RGTC2:
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case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB:
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case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB:
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case GL_COMPRESSED_RGBA_BPTC_UNORM_ARB:
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case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB:
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bytesPer4x4Block = 16;
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break;
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default:
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ri.Printf(PRINT_ALL, "Unsupported texture format %08x\n", picFormat);
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return;
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break;
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}
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for (miplevel = 0; miplevel < numMips; miplevel++)
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{
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int size;
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size = ((width + 3) / 4) * ((height + 3) / 4) * bytesPer4x4Block;
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if (subtexture)
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qglCompressedTexSubImage2DARB(GL_TEXTURE_2D, miplevel, x, y, width, height, internalFormat, size, data);
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else
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qglCompressedTexImage2DARB(GL_TEXTURE_2D, miplevel, internalFormat, width, height, 0, size, data);
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x >>= 1;
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y >>= 1;
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x -= x % 4;
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y -= y % 4;
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width = MAX(1, width >> 1);
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height = MAX(1, height >> 1);
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data += size;
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}
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return;
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}
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switch(internalFormat)
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{
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case GL_DEPTH_COMPONENT:
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@ -1948,7 +2007,7 @@ Upload32
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===============
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*/
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static void Upload32(byte *data, int x, int y, int width, int height, image_t *image)
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static void Upload32(byte *data, int x, int y, int width, int height, GLenum picFormat, int numMips, image_t *image)
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{
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byte *resampledBuffer = NULL;
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int i, c;
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@ -1964,11 +2023,16 @@ static void Upload32(byte *data, int x, int y, int width, int height, image_t *i
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if (!data)
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{
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RawImage_ScaleToPower2(NULL, &width, &height, type, flags, NULL);
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RawImage_UploadTexture(NULL, 0, 0, width, height, internalFormat, type, flags, qfalse);
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RawImage_UploadTexture(NULL, 0, 0, width, height, GL_RGBA8, 0, internalFormat, type, flags, qfalse);
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goto done;
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}
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else if (!subtexture)
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{
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if (picFormat != GL_RGBA8)
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{
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RawImage_UploadTexture(data, 0, 0, width, height, picFormat, numMips, internalFormat, type, flags, qfalse);
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goto done;
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}
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notScaled = RawImage_ScaleToPower2(&data, &width, &height, type, flags, &resampledBuffer);
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}
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@ -2006,12 +2070,12 @@ static void Upload32(byte *data, int x, int y, int width, int height, image_t *i
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if (subtexture)
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{
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// FIXME: Incorrect if original texture was not a power of 2 texture or picmipped
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RawImage_UploadTexture(data, x, y, width, height, internalFormat, type, flags, qtrue);
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RawImage_UploadTexture(data, x, y, width, height, GL_RGBA8, 0, internalFormat, type, flags, qtrue);
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GL_CheckErrors();
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return;
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}
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RawImage_UploadTexture(data, 0, 0, width, height, internalFormat, type, flags, qfalse);
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RawImage_UploadTexture(data, 0, 0, width, height, GL_RGBA8, 0, internalFormat, type, flags, qfalse);
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done:
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@ -2061,12 +2125,12 @@ done:
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/*
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================
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R_CreateImage
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R_CreateImage2
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This is the only way any image_t are created
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================
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*/
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image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgType_t type, imgFlags_t flags, int internalFormat ) {
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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 ) {
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image_t *image;
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qboolean isLightmap = qfalse;
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long hash;
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@ -2104,7 +2168,7 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgT
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if (image->flags & IMGFLAG_CUBEMAP)
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internalFormat = GL_RGBA8;
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else
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internalFormat = RawImage_GetFormat(pic, width * height, isLightmap, image->type, image->flags);
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internalFormat = RawImage_GetFormat(pic, width * height, picFormat, isLightmap, image->type, image->flags);
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}
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image->internalFormat = internalFormat;
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@ -2155,7 +2219,7 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgT
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}
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else
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{
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Upload32( pic, 0, 0, image->width, image->height, image );
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Upload32( pic, 0, 0, image->width, image->height, picFormat, numMips, image );
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qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glWrapClampMode );
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qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glWrapClampMode );
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@ -2170,6 +2234,20 @@ image_t *R_CreateImage( const char *name, byte *pic, int width, int height, imgT
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return image;
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}
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/*
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================
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R_CreateImage
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Wrapper for R_CreateImage2(), for the old parameters.
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================
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*/
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image_t *R_CreateImage(const char *name, byte *pic, int width, int height, imgType_t type, imgFlags_t flags, int internalFormat)
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{
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return R_CreateImage2(name, pic, width, height, GL_RGBA8, 0, type, flags, internalFormat);
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}
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void R_UpdateSubImage( image_t *image, byte *pic, int x, int y, int width, int height )
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{
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if (qglActiveTextureARB) {
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@ -2178,13 +2256,16 @@ void R_UpdateSubImage( image_t *image, byte *pic, int x, int y, int width, int h
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GL_Bind(image);
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Upload32(pic, x, y, width, height, image);
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Upload32(pic, x, y, width, height, GL_RGBA8, 0, image);
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GL_SelectTexture(0);
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}
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//===================================================================
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// Prototype for dds loader function which isn't common to both renderers
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void R_LoadDDS(const char *filename, byte **pic, int *width, int *height, GLenum *picFormat, int *numMips);
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typedef struct
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{
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char *ext;
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@ -2213,7 +2294,7 @@ Loads any of the supported image types into a cannonical
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32 bit format.
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=================
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*/
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void R_LoadImage( const char *name, byte **pic, int *width, int *height )
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void R_LoadImage( const char *name, byte **pic, int *width, int *height, GLenum *picFormat, int *numMips )
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{
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qboolean orgNameFailed = qfalse;
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int orgLoader = -1;
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@ -2225,11 +2306,28 @@ void R_LoadImage( const char *name, byte **pic, int *width, int *height )
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*pic = NULL;
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*width = 0;
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*height = 0;
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*picFormat = GL_RGBA8;
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*numMips = 0;
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Q_strncpyz( localName, name, MAX_QPATH );
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ext = COM_GetExtension( localName );
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// If compressed textures are enabled, try loading a DDS first, it'll load fastest
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if (r_ext_compressed_textures->integer)
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{
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char ddsName[MAX_QPATH];
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COM_StripExtension(name, ddsName, MAX_QPATH);
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Q_strcat(ddsName, MAX_QPATH, ".dds");
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R_LoadDDS(ddsName, pic, width, height, picFormat, numMips);
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// If loaded, we're done.
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if (*pic)
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return;
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}
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if( *ext )
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{
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// Look for the correct loader and use it
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@ -2301,6 +2399,8 @@ image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags )
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image_t *image;
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int width, height;
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byte *pic;
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GLenum picFormat;
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int picNumMips;
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long hash;
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if (!name) {
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@ -2327,12 +2427,12 @@ image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags )
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//
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// load the pic from disk
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//
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R_LoadImage( name, &pic, &width, &height );
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R_LoadImage( name, &pic, &width, &height, &picFormat, &picNumMips );
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if ( pic == NULL ) {
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return NULL;
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}
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if (r_normalMapping->integer && !(type == IMGTYPE_NORMAL) && (flags & IMGFLAG_PICMIP) && (flags & IMGFLAG_MIPMAP) && (flags & IMGFLAG_GENNORMALMAP))
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if (r_normalMapping->integer && (picFormat == GL_RGBA8) && !(type == IMGTYPE_NORMAL) && (flags & IMGFLAG_PICMIP) && (flags & IMGFLAG_MIPMAP) && (flags & IMGFLAG_GENNORMALMAP))
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{
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char normalName[MAX_QPATH];
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image_t *normalImage;
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@ -2435,7 +2535,7 @@ image_t *R_FindImageFile( const char *name, imgType_t type, imgFlags_t flags )
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}
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}
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image = R_CreateImage( ( char * ) name, pic, width, height, type, flags, 0 );
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image = R_CreateImage2( ( char * ) name, pic, width, height, picFormat, picNumMips, type, flags, 0 );
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ri.Free( pic );
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return image;
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}
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448
code/renderergl2/tr_image_dds.c
Normal file
448
code/renderergl2/tr_image_dds.c
Normal file
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@ -0,0 +1,448 @@
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/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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2015 James Canete
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include "../renderercommon/tr_common.h"
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typedef unsigned int ui32_t;
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typedef struct ddsHeader_s
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{
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ui32_t headerSize;
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ui32_t flags;
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ui32_t height;
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ui32_t width;
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ui32_t pitchOrFirstMipSize;
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ui32_t volumeDepth;
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ui32_t numMips;
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ui32_t reserved1[11];
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ui32_t always_0x00000020;
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ui32_t pixelFormatFlags;
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ui32_t fourCC;
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ui32_t rgbBitCount;
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ui32_t rBitMask;
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ui32_t gBitMask;
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ui32_t bBitMask;
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ui32_t aBitMask;
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ui32_t caps;
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ui32_t caps2;
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ui32_t caps3;
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ui32_t caps4;
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ui32_t reserved2;
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}
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ddsHeader_t;
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// flags:
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#define _DDSFLAGS_REQUIRED 0x001007
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#define _DDSFLAGS_PITCH 0x8
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#define _DDSFLAGS_MIPMAPCOUNT 0x20000
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#define _DDSFLAGS_FIRSTMIPSIZE 0x80000
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#define _DDSFLAGS_VOLUMEDEPTH 0x800000
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// pixelFormatFlags:
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#define DDSPF_ALPHAPIXELS 0x1
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#define DDSPF_ALPHA 0x2
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#define DDSPF_FOURCC 0x4
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#define DDSPF_RGB 0x40
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#define DDSPF_YUV 0x200
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#define DDSPF_LUMINANCE 0x20000
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// caps:
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#define DDSCAPS_COMPLEX 0x8
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#define DDSCAPS_MIPMAP 0x400000
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#define DDSCAPS_REQUIRED 0x1000
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// caps2:
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#define DDSCAPS2_CUBEMAP 0xFE00
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#define DDSCAPS2_VOLUME 0x200000
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typedef struct ddsHeaderDxt10_s
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{
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ui32_t dxgiFormat;
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ui32_t dimensions;
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ui32_t miscFlags;
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ui32_t arraySize;
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ui32_t miscFlags2;
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}
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ddsHeaderDxt10_t;
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// dxgiFormat
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb173059%28v=vs.85%29.aspx
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typedef enum DXGI_FORMAT {
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DXGI_FORMAT_UNKNOWN = 0,
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DXGI_FORMAT_R32G32B32A32_TYPELESS = 1,
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DXGI_FORMAT_R32G32B32A32_FLOAT = 2,
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DXGI_FORMAT_R32G32B32A32_UINT = 3,
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DXGI_FORMAT_R32G32B32A32_SINT = 4,
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DXGI_FORMAT_R32G32B32_TYPELESS = 5,
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DXGI_FORMAT_R32G32B32_FLOAT = 6,
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DXGI_FORMAT_R32G32B32_UINT = 7,
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DXGI_FORMAT_R32G32B32_SINT = 8,
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DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,
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DXGI_FORMAT_R16G16B16A16_FLOAT = 10,
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DXGI_FORMAT_R16G16B16A16_UNORM = 11,
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DXGI_FORMAT_R16G16B16A16_UINT = 12,
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DXGI_FORMAT_R16G16B16A16_SNORM = 13,
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DXGI_FORMAT_R16G16B16A16_SINT = 14,
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DXGI_FORMAT_R32G32_TYPELESS = 15,
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DXGI_FORMAT_R32G32_FLOAT = 16,
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DXGI_FORMAT_R32G32_UINT = 17,
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DXGI_FORMAT_R32G32_SINT = 18,
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DXGI_FORMAT_R32G8X24_TYPELESS = 19,
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DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20,
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DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21,
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DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22,
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DXGI_FORMAT_R10G10B10A2_TYPELESS = 23,
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DXGI_FORMAT_R10G10B10A2_UNORM = 24,
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DXGI_FORMAT_R10G10B10A2_UINT = 25,
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DXGI_FORMAT_R11G11B10_FLOAT = 26,
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DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,
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DXGI_FORMAT_R8G8B8A8_UNORM = 28,
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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);
|
||||
}
|
||||
Loading…
Reference in a new issue