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This allows render to depth texture (we don't support floating pt. Z buffers).
Rename MESA_FORMAT_DEPTH_COMPONENT16/32 as MESA_FORMAT_Z16/32.
Software fallback for glCopyTexImage now uses integer temporary image instead
of float, eliminates a lot of float/int conversions.
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glReadPixels done, glDrawPixels mostly done.
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More code re-use this time.
Most formats now tested/debugged with new packedpixels.c test.
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Moved CI->RGBA palette lookup into texel fetch function.
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Moved all code related to specific texture compression modes into
new texcompress_s3tc.c and texcompress_fxt1.c files (but not implemented).
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The gl_texture_format struct now has a StoreTexImageFunc that's called
by glTex[Sub]Image[123]D to convert the user's texture data into the
specific texture format layout. Now it's much easier to add new texture
formats (like the 16/32-bit floating point formats).
The texutil.[ch] and texutil_tmp.h files are obsolete.
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Added _mesa_printf()
Updated SetDrawBuffer() function in all drivers (ala 4.0.3)
Import 4.0.3/DRI changes.
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Define either MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
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compression isn't really implmented. Just updated glTexImageXD()
to accept compressed internal format tokens.
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1. Added ctx->Driver.ChooseTextureFormat() function. Examines user's
internalFormat, format, type params and returns a gl_texture_format.
2. _mesa_store_teximage[123]d() calls ctx->Driver.ChooseTextureFormat(),
allocates storage and transfers the image into the desired format.
3. _mesa_transfer_teximage() now takes a gl_texture_format to describe
the destination format. Any combination of input format/type and
output gl_texture_format is accepted. Uses optimized _mesa_convert_-
texsubimage[123]d() functions when possible.
3. DRI driver's TexImage[123]D functions should be a lot simpler now.
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FetchTexel routines).
- Initial hooks for GL_EXT_texture_filter_anisotropic.
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