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intel: Enable blit glCopyTexSubImage/glBlitFramebuffer with sRGB.

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Since the introduction of default-to-SARGB8 window system framebuffers,
non-blorp hardware lost blit acceleration for these two paths between the
window system and ARGB8888 textures.  Since we shouldn't be doing any
conversion anyway, just compatibility-check the linear variants of the
formats.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61954
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Tested-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
This commit is contained in:
Eric Anholt 2013-05-28 10:59:53 -07:00
parent f43f07d588
commit 4dea6cf215
1 changed files with 11 additions and 5 deletions
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16
src/mesa/drivers/dri/intel/intel_tex_copy.c
View file

@ -80,17 +80,23 @@ intel_copy_texsubimage(struct intel_context *intel,
perf_debug("no support for array textures\n");
}
copy_supported = intelImage->base.Base.TexFormat == intel_rb_format(irb);
/* glCopyTexImage (and the glBlitFramebuffer() path that reuses this)
* doesn't do any sRGB conversions.
*/
gl_format src_format = _mesa_get_srgb_format_linear(intel_rb_format(irb));
gl_format dst_format = _mesa_get_srgb_format_linear(intelImage->base.Base.TexFormat);
copy_supported = src_format == dst_format;
/* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
if (intel_rb_format(irb) == MESA_FORMAT_ARGB8888 &&
intelImage->base.Base.TexFormat == MESA_FORMAT_XRGB8888) {
if (src_format == MESA_FORMAT_ARGB8888 &&
dst_format == MESA_FORMAT_XRGB8888) {
copy_supported = true;
}
/* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
if (intel_rb_format(irb) == MESA_FORMAT_XRGB8888 &&
intelImage->base.Base.TexFormat == MESA_FORMAT_ARGB8888) {
if (src_format == MESA_FORMAT_XRGB8888 &&
dst_format == MESA_FORMAT_ARGB8888) {
copy_supported_with_alpha_override = true;
}