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glamor_gl: Use GL_ALPHA for depth 8 pixmap.

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Use GL_RGBA to represent a8 pixmap is not efficient.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
This commit is contained in:
Zhigang Gong 2012-04-13 13:47:05 +08:00 • committed by Eric Anholt
commit 18d69fb014
2 changed files with 4 additions and 2 deletions
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4
glamor/glamor_utils.h
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@ -257,10 +257,10 @@ static inline void
gl_iformat_for_depth(int depth, GLenum * format)
{
switch (depth) {
#if 0
case 8:
*format = GL_ALPHA;
break;
#if 0
case 24:
*format = GL_RGB;
break;
@ -411,6 +411,8 @@ glamor_get_tex_format_type_from_pictformat(PictFormatShort format,
inline static int cache_format(GLenum format)
{
switch (format) {
case GL_ALPHA:
return 1;
case GL_RGBA:
return 0;
default: