diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/radeon_span.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/radeon_span.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/r300/radeon_span.c b/src/mesa/drivers/dri/r300/radeon_span.c index 93c4da9085..efc5a01c37 100644 --- a/src/mesa/drivers/dri/r300/radeon_span.c +++ b/src/mesa/drivers/dri/r300/radeon_span.c @@ -257,18 +257,21 @@ do { \ #include "depthtmp.h" /* 24 bit depth, 8 bit stencil depthbuffer functions + * + * Careful: It looks like the R300 uses ZZZS byte order while the R200 + * uses SZZZ for 24 bit depth, 8 bit stencil mode. */ #define WRITE_DEPTH( _x, _y, d ) \ do { \ GLuint offset = (_x + xo + (_y + yo)*pitch)*4; \ GLuint tmp = *(GLuint *)(buf + offset); \ - tmp &= 0xff000000; \ - tmp |= ((d) & 0x00ffffff); \ + tmp &= 0x000000ff; \ + tmp |= ((d << 8) & 0xffffff00); \ *(GLuint *)(buf + offset) = tmp; \ } while (0) #define READ_DEPTH( d, _x, _y ) \ - d = *(GLuint *)(buf + (_x + xo + (_y + yo)*pitch)*4) & 0x00ffffff; + d = (*(GLuint *)(buf + (_x + xo + (_y + yo)*pitch)*4) & 0xffffff00) >> 8; #define TAG(x) radeon##x##_24_8_LINEAR #include "depthtmp.h" |