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| author | marha <marha@users.sourceforge.net> | 2010-11-29 22:05:53 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2010-11-29 22:05:53 +0000 |
| commit | fed109d6a33c0871291d1bb2f3f6b7a3d1a3e9d7 (patch) | |
| tree | fa1ba494685a71e28a096990a8707680c7cb378b /mesalib/src/mesa/drivers/dri/common/spantmp2.h | |
| parent | ae340911c1ba1f98b418bd8f1a487fa4d79491b0 (diff) | |
| parent | 6fda93be42ace9eeab0e82ceebb6798961c9105c (diff) | |
| download | vcxsrv-fed109d6a33c0871291d1bb2f3f6b7a3d1a3e9d7.tar.gz vcxsrv-fed109d6a33c0871291d1bb2f3f6b7a3d1a3e9d7.tar.bz2 vcxsrv-fed109d6a33c0871291d1bb2f3f6b7a3d1a3e9d7.zip | |
svn merge ^/branches/released .
Diffstat (limited to 'mesalib/src/mesa/drivers/dri/common/spantmp2.h')
| -rw-r--r-- | mesalib/src/mesa/drivers/dri/common/spantmp2.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/mesalib/src/mesa/drivers/dri/common/spantmp2.h b/mesalib/src/mesa/drivers/dri/common/spantmp2.h index 98422a856..1dab7336b 100644 --- a/mesalib/src/mesa/drivers/dri/common/spantmp2.h +++ b/mesalib/src/mesa/drivers/dri/common/spantmp2.h @@ -413,6 +413,38 @@ } while (0) # endif +#elif (SPANTMP_PIXEL_FMT == GL_ALPHA) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_BYTE) + +/** + ** GL_ALPHA, GL_UNSIGNED_BYTE + **/ + +#ifndef GET_VALUE +#ifndef GET_PTR +#define GET_PTR(_x, _y) ( buf + (_x) + (_y) * pitch) +#endif + +#define GET_VALUE(_x, _y) *(volatile GLubyte *)(GET_PTR(_x, _y)) +#define PUT_VALUE(_x, _y, _v) *(volatile GLubyte *)(GET_PTR(_x, _y)) = (_v) +#endif /* GET_VALUE */ + +# define INIT_MONO_PIXEL(p, color) \ + p = color[3] + +# define WRITE_RGBA(_x, _y, r, g, b, a) \ + PUT_VALUE(_x, _y, a | (r & 0 /* quiet warnings */)) + +#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p) + +#define READ_RGBA( rgba, _x, _y ) \ + do { \ + GLubyte p = GET_VALUE(_x, _y); \ + rgba[0] = 0; \ + rgba[1] = 0; \ + rgba[2] = 0; \ + rgba[3] = p; \ + } while (0) + #else #error SPANTMP_PIXEL_FMT must be set to a valid value! #endif |