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If visual is 32bpp, set visual->alphaBits = 8.

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This works since we always use XImages for color buffers.  It wouldn't always
work for Windows/Pixmaps.
This commit is contained in:
Brian 2008-03-27 21:11:45 -06:00
parent 39038c1169
commit 5935b16ff5
1 changed files with 8 additions and 0 deletions
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8
src/gallium/winsys/xlib/xm_api.c
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@ -511,6 +511,14 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
return GL_FALSE;
}
v->mesa_visual.indexBits = 0;
if (v->BitsPerPixel == 32) {
/* We use XImages for all front/back buffers. If an X Window or
* X Pixmap is 32bpp, there's no guarantee that the alpha channel
* will be preserved. For XImages we're in luck.
*/
v->mesa_visual.alphaBits = 8;
}
}
/*