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| author | Keith Whitwell <keith@tungstengraphics.com> | 2007-08-21 12:54:41 +0200 |
|---|---|---|
| committer | Michel Dänzer <michel@tungstengraphics.com> | 2007-08-21 12:54:41 +0200 |
| commit | 2a9be6165100cf7b7c204dfdf79e8d52fb02eb65 (patch) | |
| tree | 767495baad01f25361f0e4ee9e9c6d09a19d0bdf | |
| parent | a7658124975d75704ed43ee41423a3678de6ef63 (diff) | |
| download | mesa-i915tex-zone-rendering.tar.gz | |
i915tex: Document zone rendering related definitions.i915tex-zone-rendering
| -rw-r--r-- | src/mesa/drivers/dri/i915tex/i915_reg.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i915tex/i915_reg.h b/src/mesa/drivers/dri/i915tex/i915_reg.h index adeaa1dabc6..a9fa56e8a60 100644 --- a/src/mesa/drivers/dri/i915tex/i915_reg.h +++ b/src/mesa/drivers/dri/i915tex/i915_reg.h @@ -112,6 +112,13 @@ /* 3DSTATE_CHROMA_KEY */ /* 3DSTATE_CLEAR_PARAMETERS, p150 */ +/* + * Sets the color, depth and stencil clear values used by the + * CLEAR_RECT and ZONE_INIT primitive types, respectively. These + * primitives set override most 3d state and only take a minimal x/y + * vertex. The color/z/stencil information is supplied here and + * therefore cannot vary per vertex. + */ #define _3DSTATE_CLEAR_PARAMETERS (CMD_3D | (0x1d<<24) | (0x9c<<16) | 5) /* Dword 1 */ #define CLEARPARAM_CLEAR_RECT (1 << 16) @@ -432,7 +439,8 @@ #define S7_DEPTH_OFFSET_CONST_MASK ~0 - +/* Helper macros for blend factors + */ #define DST_BLND_FACT(f) ((f)<<S6_CBUF_DST_BLEND_FACT_SHIFT) #define SRC_BLND_FACT(f) ((f)<<S6_CBUF_SRC_BLEND_FACT_SHIFT) #define DST_ABLND_FACT(f) ((f)<<IAB_DST_FACTOR_SHIFT) |