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more texture compression

This commit is contained in:
Daniel Borca 2003-11-21 09:56:50 +00:00
parent 8b07e9d8a4
commit 663a9e1b7e
7 changed files with 100 additions and 26 deletions
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2
src/mesa/drivers/glide/fxdd.c
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@ -1458,7 +1458,7 @@ fxDDInitExtensions(GLcontext * ctx)
if (fxMesa->type >= GR_SSTTYPE_Voodoo4) {
_mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
_mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
/*_mesa_enable_extension(ctx, "GL_S3_s3tc");*/
_mesa_enable_extension(ctx, "GL_S3_s3tc");
}
if (fxMesa->HaveCmbExt) {

23
src/mesa/drivers/glide/fxddtex.c
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@ -832,7 +832,11 @@ GLboolean fxDDIsCompressedFormat ( GLcontext *ctx, GLenum internalFormat )
(internalFormat == GL_COMPRESSED_RGB_S3TC_DXT1_EXT) ||
(internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) ||
(internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT) ||
(internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)) {
(internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT) ||
(internalFormat == GL_RGB_S3TC) ||
(internalFormat == GL_RGB4_S3TC) ||
(internalFormat == GL_RGBA_S3TC) ||
(internalFormat == GL_RGBA4_S3TC)) {
return GL_TRUE;
}
@ -876,8 +880,11 @@ GLuint fxDDCompressedTextureSize (GLcontext *ctx,
switch (format) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
/* round up to multiples of 8, 4 */
size = ((width + 7) / 8) * ((height + 3) / 4) * 16;
/* round up width to next multiple of 8, height to next multiple of 4 */
width = (width + 7) & ~7;
height = (height + 3) & ~3;
/* 16 bytes per 8x4 tile of RGB[A] texels */
size = width * height / 2;
/* Textures smaller than 8x4 will effectively be made into 8x4 and
* take 16 bytes.
*/
@ -886,11 +893,13 @@ GLuint fxDDCompressedTextureSize (GLcontext *ctx,
return size;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
/* round up width, height to next multiple of 4 */
width = (width + 3) & ~3;
height = (height + 3) & ~3;
/* 8 bytes per 4x4 tile of RGB[A] texels */
size = (width * height * 8) / 16;
size = width * height / 2;
/* Textures smaller than 4x4 will effectively be made into 4x4 and
* take 8 bytes.
*/
@ -899,6 +908,8 @@ GLuint fxDDCompressedTextureSize (GLcontext *ctx,
return size;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
/* round up width, height to next multiple of 4 */
width = (width + 3) & ~3;
height = (height + 3) & ~3;
@ -1053,10 +1064,14 @@ fxDDChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
return &_mesa_texformat_argb1555;
/* GL_EXT_texture_compression_s3tc */
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
return &_mesa_texformat_rgb_dxt1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
return &_mesa_texformat_rgba_dxt1;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
return &_mesa_texformat_rgba_dxt3;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return &_mesa_texformat_rgba_dxt5;

1
src/mesa/main/extensions.c
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@ -143,6 +143,7 @@ static const struct {
{ OFF, "GL_SGIX_shadow", F(SGIX_shadow) },
{ OFF, "GL_SGIX_shadow_ambient", F(SGIX_shadow_ambient) },
{ OFF, "GL_SUN_multi_draw_arrays", F(EXT_multi_draw_arrays) },
{ OFF, "GL_S3_s3tc", F(S3_s3tc) },
};

1
src/mesa/main/mtypes.h
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@ -1815,6 +1815,7 @@ struct gl_extensions
GLboolean SGIX_shadow_ambient; /* or GL_ARB_shadow_ambient */
GLboolean TDFX_texture_compression_FXT1;
GLboolean APPLE_client_storage;
GLboolean S3_s3tc;
/*@}*/
/* The extension string */
const GLubyte *String;

65
src/mesa/main/texcompress.c
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@ -73,6 +73,17 @@ _mesa_get_compressed_formats( GLcontext *ctx, GLint *formats )
n += 3;
}
}
if (ctx->Extensions.S3_s3tc) {
if (formats) {
formats[n++] = GL_RGB_S3TC;
formats[n++] = GL_RGB4_S3TC;
formats[n++] = GL_RGBA_S3TC;
formats[n++] = GL_RGBA4_S3TC;
}
else {
n += 4;
}
}
}
return n;
}
@ -100,11 +111,16 @@ _mesa_compressed_texture_size( GLcontext *ctx,
return ctx->Driver.CompressedTextureSize(ctx, width, height, depth, format);
}
ASSERT(depth == 1);
switch (format) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
/* round up to multiples of 8, 4 */
size = ((width + 7) / 8) * ((height + 3) / 4) * 16;
/* round up width to next multiple of 8, height to next multiple of 4 */
width = (width + 7) & ~7;
height = (height + 3) & ~3;
/* 16 bytes per 8x4 tile of RGB[A] texels */
size = width * height / 2;
/* Textures smaller than 8x4 will effectively be made into 8x4 and
* take 16 bytes.
*/
@ -113,12 +129,13 @@ _mesa_compressed_texture_size( GLcontext *ctx,
return size;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
/* round up width, height to next multiple of 4 */
width = (width + 3) & ~3;
height = (height + 3) & ~3;
ASSERT(depth == 1);
/* 8 bytes per 4x4 tile of RGB[A] texels */
size = (width * height * 8) / 16;
size = width * height / 2;
/* Textures smaller than 4x4 will effectively be made into 4x4 and
* take 8 bytes.
*/
@ -127,10 +144,11 @@ _mesa_compressed_texture_size( GLcontext *ctx,
return size;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
/* round up width, height to next multiple of 4 */
width = (width + 3) & ~3;
height = (height + 3) & ~3;
ASSERT(depth == 1);
/* 16 bytes per 4x4 tile of RGBA texels */
size = width * height; /* simple! */
/* Textures smaller than 4x4 will effectively be made into 4x4 and
@ -156,26 +174,29 @@ _mesa_compressed_texture_size( GLcontext *ctx,
GLint
_mesa_compressed_row_stride(GLenum format, GLsizei width)
{
GLint bytesPerTile, stride;
GLint stride;
switch (format) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
bytesPerTile = 16;
stride = ((width + 7) / 8) * 16; /* 16 bytes per 8x4 tile */
break;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
bytesPerTile = 8;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
stride = ((width + 3) / 4) * 8; /* 8 bytes per 4x4 tile */
break;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
bytesPerTile = 16;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
stride = ((width + 3) / 4) * 16; /* 16 bytes per 4x4 tile */
break;
default:
return 0;
}
stride = ((width + 3) / 4) * bytesPerTile;
return stride;
}
@ -198,33 +219,39 @@ _mesa_compressed_image_address(GLint col, GLint row, GLint img,
GLenum format,
GLsizei width, const GLubyte *image)
{
GLint bytesPerTile, stride;
GLubyte *addr;
ASSERT((row & 3) == 0);
ASSERT((col & 3) == 0);
(void) img;
/* We try to spot a "complete" subtexture "above" ROW, COL;
* this texture is given by appropriate rounding of WIDTH x ROW.
* Then we just add the amount left (usually on the left).
*
* Example for X*Y microtiles (Z bytes each)
* offset = Z * (((width + X - 1) / X) * (row / Y) + col / X);
*/
switch (format) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
bytesPerTile = 16;
addr = (GLubyte *) image + 16 * (((width + 7) / 8) * (row / 4) + col / 8);
break;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
bytesPerTile = 8;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
addr = (GLubyte *) image + 8 * (((width + 3) / 4) * (row / 4) + col / 4);
break;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
bytesPerTile = 16;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
addr = (GLubyte *) image + 16 * (((width + 3) / 4) * (row / 4) + col / 4);
break;
default:
return 0;
}
stride = ((width + 3) / 4) * bytesPerTile;
addr = (GLubyte *) image + (row / 4) * stride + (col / 4) * bytesPerTile;
return addr;
}

18
src/mesa/main/texformat.c
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@ -874,7 +874,7 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
_mesa_problem(ctx, "texture compression extension not enabled");
if (ctx->Extensions.TDFX_texture_compression_FXT1)
return &_mesa_texformat_rgb_fxt1;
else if (ctx->Extensions.EXT_texture_compression_s3tc)
else if (ctx->Extensions.EXT_texture_compression_s3tc || ctx->Extensions.S3_s3tc)
return &_mesa_texformat_rgb_dxt1;
return &_mesa_texformat_rgb;
case GL_COMPRESSED_RGBA_ARB:
@ -882,7 +882,7 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
_mesa_problem(ctx, "texture compression extension not enabled");
if (ctx->Extensions.TDFX_texture_compression_FXT1)
return &_mesa_texformat_rgba_fxt1;
else if (ctx->Extensions.EXT_texture_compression_s3tc)
else if (ctx->Extensions.EXT_texture_compression_s3tc || ctx->Extensions.S3_s3tc)
return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1! See the spec */
return &_mesa_texformat_rgba;
@ -927,6 +927,20 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
else
return NULL;
/* GL_S3_s3tc */
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
if (ctx->Extensions.S3_s3tc)
return &_mesa_texformat_rgb_dxt1;
else
return NULL;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
if (ctx->Extensions.S3_s3tc)
return &_mesa_texformat_rgba_dxt3;
else
return NULL;
default:
_mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
return NULL;

16
src/mesa/main/teximage.c
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@ -274,6 +274,18 @@ _mesa_base_tex_format( GLcontext *ctx, GLint format )
return GL_RGBA;
else
return -1;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
if (ctx->Extensions.S3_s3tc)
return GL_RGB;
else
return -1;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
if (ctx->Extensions.S3_s3tc)
return GL_RGBA;
else
return -1;
case GL_YCBCR_MESA:
if (ctx->Extensions.MESA_ycbcr_texture)
@ -387,6 +399,10 @@ is_compressed_format(GLcontext *ctx, GLenum internalFormat)
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
return GL_TRUE;
default:
if (ctx->Driver.IsCompressedFormat) {