diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/i965simple/brw_defines.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965simple/brw_defines.h b/src/gallium/drivers/i965simple/brw_defines.h index 9379a397f6..715d2d2d01 100644 --- a/src/gallium/drivers/i965simple/brw_defines.h +++ b/src/gallium/drivers/i965simple/brw_defines.h @@ -289,6 +289,24 @@ #define BRW_RASTRULE_UPPER_LEFT 0 #define BRW_RASTRULE_UPPER_RIGHT 1 +/* These are listed as "Reserved, but not seen as useful" + * in Intel documentation (page 212, "Point Rasterization Rule", + * section 7.4 "SF Pipeline State Summary", of document + * "Intel® 965 Express Chipset Family and Intel® G35 Express + * Chipset Graphics Controller Programmer's Reference Manual, + * Volume 2: 3D/Media", Revision 1.0b as of January 2008, + * available at + * http://intellinuxgraphics.org/documentation.html + * at the time of this writing). + * + * These appear to be supported on at least some + * i965-family devices, and the BRW_RASTRULE_LOWER_RIGHT + * is useful when using OpenGL to render to a FBO + * (which has the pixel coordinate Y orientation inverted + * with respect to the normal OpenGL pixel coordinate system). + */ +#define BRW_RASTRULE_LOWER_LEFT 2 +#define BRW_RASTRULE_LOWER_RIGHT 3 #define BRW_RENDERTARGET_CLAMPRANGE_UNORM 0 #define BRW_RENDERTARGET_CLAMPRANGE_SNORM 1 |