diff options
| author | Ian Romanick <ian.d.romanick@intel.com> | 2009-12-08 21:10:45 -0800 |
|---|---|---|
| committer | Ian Romanick <ian.d.romanick@intel.com> | 2009-12-10 15:12:30 -0800 |
| commit | ffc1f299e9eaa6eaa4b5586b9fb13132564bd3ae (patch) | |
| tree | e930622d7659f977d14441ed394f0aac53cf0fd3 /src/mesa/drivers/dri/common/spantmp2.h | |
| parent | 430876cd3a70d3b701d136b825518140888f96c8 (diff) | |
spantmp2: Add support for GL_BGR / GL_UNSIGNED_INT_8_8_8_8_REV
This is really for MESA_FORMAT_XRGB8888. Clearly spantmp2.h needs some
re-work. Any volunteers?
Diffstat (limited to 'src/mesa/drivers/dri/common/spantmp2.h')
| -rw-r--r-- | src/mesa/drivers/dri/common/spantmp2.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/common/spantmp2.h b/src/mesa/drivers/dri/common/spantmp2.h index 95f97414a9..447f3d15b9 100644 --- a/src/mesa/drivers/dri/common/spantmp2.h +++ b/src/mesa/drivers/dri/common/spantmp2.h @@ -356,6 +356,63 @@ } while (0) # endif +#elif (SPANTMP_PIXEL_FMT == GL_BGR) && (SPANTMP_PIXEL_TYPE == GL_UNSIGNED_INT_8_8_8_8_REV) + +/** + ** GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV + ** + ** This is really for MESA_FORMAT_XRGB8888. The spantmp code needs to be + ** kicked to the curb, and we need to just code-gen this. + **/ + +#ifndef GET_VALUE +#ifndef GET_PTR +#define GET_PTR(_x, _y) ( buf + (_x) * 4 + (_y) * pitch) +#endif + +#define GET_VALUE(_x, _y) *(volatile GLuint *)(GET_PTR(_x, _y)) +#define PUT_VALUE(_x, _y, _v) *(volatile GLuint *)(GET_PTR(_x, _y)) = (_v) +#endif /* GET_VALUE */ + +# define INIT_MONO_PIXEL(p, color) \ + p = PACK_COLOR_8888(0xff, color[0], color[1], color[2]) + +# define WRITE_RGBA(_x, _y, r, g, b, a) \ + PUT_VALUE(_x, _y, ((r << 16) | \ + (g << 8) | \ + (b << 0) | \ + (0xff << 24))) + +#define WRITE_PIXEL(_x, _y, p) PUT_VALUE(_x, _y, p) + +# if defined( USE_X86_ASM ) +# define READ_RGBA(rgba, _x, _y) \ + do { \ + GLuint p = GET_VALUE(_x, _y); \ + __asm__ __volatile__( "bswap %0; rorl $8, %0" \ + : "=r" (p) : "0" (p) ); \ + ((GLuint *)rgba)[0] = p | 0xff000000; \ + } while (0) +# elif defined( MESA_BIG_ENDIAN ) + /* On PowerPC with GCC 3.4.2 the shift madness below becomes a single + * rotlwi instruction. It also produces good code on SPARC. + */ +# define READ_RGBA( rgba, _x, _y ) \ + do { \ + GLuint p = GET_VALUE(_x, _y); \ + *((uint32_t *) rgba) = (t << 8) | 0xff; \ + } while (0) +# else +# define READ_RGBA( rgba, _x, _y ) \ + do { \ + GLuint p = GET_VALUE(_x, _y); \ + rgba[0] = (p >> 16) & 0xff; \ + rgba[1] = (p >> 8) & 0xff; \ + rgba[2] = (p >> 0) & 0xff; \ + rgba[3] = 0xff; \ + } while (0) +# endif + #else #error SPANTMP_PIXEL_FMT must be set to a valid value! #endif |