diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-05-26 10:14:52 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-05-26 10:21:03 +0100 |
| commit | b9ada52a3081f54e0ed094ac31188bb240866f81 (patch) | |
| tree | 2bbb6ed5a7f9521de0464b40d7987414cf8c815b | |
| parent | 3055d40164590147d35b5e7059ebe5f5858c85fa (diff) | |
uxa: Force the alpha value to 0xffff when treating Over as Src
Since we have at most 8 bits of alpha, we treat >= 0xff00 as opaque.
However, being paranoid we should set the alpha value to 0xfff in case
something unexpected happens when converting from the xRenderColor to
the pixel value.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | uxa/uxa-render.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/uxa/uxa-render.c b/uxa/uxa-render.c index 41daf064..f1c34e7b 100644 --- a/uxa/uxa-render.c +++ b/uxa/uxa-render.c @@ -969,8 +969,10 @@ uxa_solid_rects (CARD8 op, if (op == PictOpClear) color->red = color->green = color->blue = color->alpha = 0; - if (color->alpha >= 0xff00 && op == PictOpOver) + if (color->alpha >= 0xff00 && op == PictOpOver) { + color->alpha = 0xffff; op = PictOpSrc; + } /* Using GEM, the relocation costs outweigh the advantages of the blitter */ if (num_boxes == 1 && (op == PictOpSrc || op == PictOpClear)) { |