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sna: Fast path common colour conversions 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-10-17 16:41:14 +01:00
parent a3466c8b69
commit 18aed47ba3
1 changed files with 14 additions and 0 deletions
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14
src/sna/sna_blt.c
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@ -433,6 +433,20 @@ sna_get_pixel_from_rgba(uint32_t * pixel,
int rbits, bbits, gbits, abits;
int rshift, bshift, gshift, ashift;
switch (format) {
case PICT_x8r8g8b8:
alpha = 0xffff;
case PICT_a8r8g8b8:
*pixel = ((alpha >> 8 << 24) |
(red >> 8 << 16) |
(green & 0xff00) |
(blue >> 8));
return TRUE;
case PICT_a8:
*pixel = alpha >> 8;
return TRUE;
}
rbits = PICT_FORMAT_R(format);
gbits = PICT_FORMAT_G(format);
bbits = PICT_FORMAT_B(format);