[Mesa-dev] [PATCH 1/7] compiler: Add enums for blend state

[Alyssa Rosenzweig]

We add enums corresponding to (GLES) blend state to shader_enums.h,
complementing the existing advanced blending enums in the file. This
allows us to represent blending state in a driver-agnostic, API-agnostic
way to permit lowering.

Signed-off-by: Alyssa Rosenzweig <alyssa at rosenzweig.io>
Cc: Eric Anholt <eric at anholt.net>
Cc: Kenneth Graunke <kenneth at whitecape.org>
---
 src/compiler/shader_enums.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/compiler/shader_enums.h b/src/compiler/shader_enums.h
index ac293af4519..47b1ca01dd6 100644
--- a/src/compiler/shader_enums.h
+++ b/src/compiler/shader_enums.h
@@ -753,6 +753,27 @@ enum gl_advanced_blend_mode
    BLEND_ALL            = 0x7fff,
 };
 
+enum blend_func
+{
+   BLEND_FUNC_ADD,
+   BLEND_FUNC_SUBTRACT,
+   BLEND_FUNC_REVERSE_SUBTRACT,
+   BLEND_FUNC_MIN,
+   BLEND_FUNC_MAX,
+};
+
+enum blend_factor
+{
+   BLEND_FACTOR_ZERO,
+   BLEND_FACTOR_SRC_COLOR,
+   BLEND_FACTOR_DST_COLOR,
+   BLEND_FACTOR_SRC_ALPHA,
+   BLEND_FACTOR_DST_ALPHA,
+   BLEND_FACTOR_CONSTANT_COLOR,
+   BLEND_FACTOR_CONSTANT_ALPHA,
+   BLEND_FACTOR_SRC_ALPHA_SATURATE,
+};
+
 enum gl_tess_spacing
 {
    TESS_SPACING_UNSPECIFIED,
-- 
2.20.1