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texture compression

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This commit is contained in:
Daniel Borca
2003-10-29 14:35:31 +00:00
parent e96a121010
commit 40bd9d0b19
6 changed files with 130 additions and 8 deletions
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31
src/mesa/main/teximage.c
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@@ -262,6 +262,18 @@ _mesa_base_tex_format( GLcontext *ctx, GLint format )
return GL_RGBA;
else
return -1;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
return GL_RGB;
else
return -1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
return GL_RGBA;
else
return -1;
case GL_YCBCR_MESA:
if (ctx->Extensions.MESA_ycbcr_texture)
@@ -366,13 +378,20 @@ is_index_format(GLenum format)
* are supported.
*/
static GLboolean
is_compressed_format(GLenum internalFormat)
is_compressed_format(GLcontext *ctx, GLenum internalFormat)
{
switch (internalFormat) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
case GL_COMPRESSED_RGBA_FXT1_3DFX:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return GL_TRUE;
default:
if (ctx->Driver.IsCompressedFormat) {
return ctx->Driver.IsCompressedFormat(ctx, internalFormat);
}
return GL_FALSE;
}
}
@@ -916,7 +935,7 @@ _mesa_init_teximage_fields(GLcontext *ctx, GLenum target,
img->Height2 = height - 2 * border; /*1 << img->HeightLog2;*/
img->Depth2 = depth - 2 * border; /*1 << img->DepthLog2;*/
img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);
img->IsCompressed = is_compressed_format(internalFormat);
img->IsCompressed = is_compressed_format(ctx, internalFormat);
if (img->IsCompressed)
img->CompressedSize = _mesa_compressed_texture_size(ctx, width, height,
depth, internalFormat);
@@ -1236,7 +1255,7 @@ texture_error_check( GLcontext *ctx, GLenum target,
}
}
if (is_compressed_format(internalFormat)) {
if (is_compressed_format(ctx, internalFormat)) {
if (target == GL_TEXTURE_2D || target == GL_PROXY_TEXTURE_2D) {
/* OK */
}
@@ -1569,7 +1588,7 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions,
return GL_TRUE;
}
if (is_compressed_format(internalFormat)) {
if (is_compressed_format(ctx, internalFormat)) {
if (target != GL_TEXTURE_2D) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyTexImage%d(target)", dimensions);
@@ -2612,7 +2631,7 @@ compressed_texture_error_check(GLcontext *ctx, GLint dimensions,
maxTextureSize = 1 << (maxLevels - 1);
if (!is_compressed_format(internalFormat))
if (!is_compressed_format(ctx, internalFormat))
return GL_INVALID_ENUM;
if (border != 0)
@@ -2701,7 +2720,7 @@ compressed_subtexture_error_check(GLcontext *ctx, GLint dimensions,
maxTextureSize = 1 << (maxLevels - 1);
if (!is_compressed_format(format))
if (!is_compressed_format(ctx, format))
return GL_INVALID_ENUM;
if (width < 1 || width > maxTextureSize)