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Unnecessary glColorMask on alpha drops performance

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Bug 1228 - Unnecessary glColorMask on alpha drops performance

With DRI2, alpha is allowed in the window's framebuffer

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
This commit is contained in:
Johan Bilien 2009-04-24 15:07:49 +01:00 committed by Emmanuele Bassi
parent 598939cee1
commit 8eb66da6b0
1 changed files with 1 additions and 7 deletions
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8
gl/cogl-fbo.c
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@ -321,13 +321,7 @@ cogl_draw_buffer (CoglBufferTarget target, CoglHandle offscreen)
/* Bind window framebuffer object */ /* Bind window framebuffer object */
GE( glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0) ); GE( glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0) );
if (target == COGL_MASK_BUFFER)
if (target == COGL_WINDOW_BUFFER)
{
/* Draw to RGB channels */
GE( glColorMask (GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE) );
}
else if (target == COGL_MASK_BUFFER)
{ {
/* Draw only to ALPHA channel */ /* Draw only to ALPHA channel */
GE( glColorMask (GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE) ); GE( glColorMask (GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE) );