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ppc: Add support for bigendian color byte order

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On LE machine, color order when creating surface will always be A/XRGB.
On BE machines the color order will sometimes be ARGB and sometimes BGRA/X.

This is because we actually create the surface two times on BE machines.
Once with BE order, and then again with LE order. Copying data inbetween
theese two surfaces will byteswap the colors automatically.

This change introduces cases for BGRA/X color byte orders on BE machines.
This commit is contained in:
Lukas Venhoda 2015-11-25 17:14:30 +01:00 committed by Christophe Fergeau
parent fc1f511bb8
commit 76a0c2fae8
1 changed files with 14 additions and 0 deletions
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14
common/canvas_utils.c
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@ -162,10 +162,17 @@ pixman_image_t * surface_create(pixman_format_code_t format, int width, int heig
switch (format) {
case PIXMAN_a8r8g8b8:
case PIXMAN_x8r8g8b8:
#ifdef WORDS_BIGENDIAN
case PIXMAN_b8g8r8a8:
case PIXMAN_b8g8r8x8:
#endif
bitmap_info.inf.bmiHeader.biBitCount = 32;
nstride = width * 4;
break;
case PIXMAN_r8g8b8:
#ifdef WORDS_BIGENDIAN
case PIXMAN_b8g8r8:
#endif
bitmap_info.inf.bmiHeader.biBitCount = 24;
nstride = SPICE_ALIGN(width * 3, 4);
break;
@ -235,9 +242,16 @@ pixman_image_t * surface_create(pixman_format_code_t format, int width, int heig
switch (format) {
case PIXMAN_a8r8g8b8:
case PIXMAN_x8r8g8b8:
#ifdef WORDS_BIGENDIAN
case PIXMAN_b8g8r8a8:
case PIXMAN_b8g8r8x8:
#endif
stride = width * 4;
break;
case PIXMAN_r8g8b8:
#ifdef WORDS_BIGENDIAN
case PIXMAN_b8g8r8:
#endif
// NOTE: LZ4 also decodes to RGB24
stride = SPICE_ALIGN(width * 3, 4);
break;