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glamor: Wire alpha to 1 for pictures without alpha bits

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When sourcing a picture that has no alpha values, make sure any
texture fetches wire the alpha value to one. This ensures that bits
beyond the depth of the pixmap, or bits other than the RGB values
aren't used.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Keith Packard 2014-04-22 16:33:45 -07:00 committed by Eric Anholt
parent a69907288d
commit 747160016b
1 changed files with 4 additions and 1 deletions
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5
glamor/glamor_render.c
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@ -870,7 +870,10 @@ glamor_composite_choose_shader(CARD8 op,
goto fail;
}
else {
key.source = SHADER_SOURCE_TEXTURE_ALPHA;
if (PICT_FORMAT_A(source->format))
key.source = SHADER_SOURCE_TEXTURE_ALPHA;
else
key.source = SHADER_SOURCE_TEXTURE;
}
if (mask) {