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

[Eric Anholt]

Alyssa Rosenzweig <alyssa at rosenzweig.io> writes:

> 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,
> +};

Interesting, I wouldn't have split blend_factor from inverting the
factor.  I'm fine with it, though.

Acked-by: Eric Anholt <eric at anholt.net>
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