From: Alyssa Rosenzweig Date: Mon, 6 May 2019 02:00:37 +0000 (+0000) Subject: nir: Add blend_const_color_rgba sysval X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=006cafc2430bbc334644d9520c4847e5a6b71b17;p=mesa.git nir: Add blend_const_color_rgba sysval This represents a float vec4 constant color, as passed to glBlendColor. While the existing 4 shader sysvals are retained to minimize code churn, a single vectorized intrinsic is required for efficient blending on vector architectures. (This may also apply to archictectures like Bifrost where ALU is scalar but load/store is vector; it largely depends on how blending is implemented per-driver.) Signed-off-by: Alyssa Rosenzweig Reviewed-by: Ian Romanick Reviewed-by: Eric Anholt --- diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py index 3a0470c2ca1..df459a3cdec 100644 --- a/src/compiler/nir/nir_intrinsics.py +++ b/src/compiler/nir/nir_intrinsics.py @@ -568,11 +568,14 @@ system_value("viewport_z_offset", 1) system_value("viewport_scale", 3) system_value("viewport_offset", 3) -# Blend constant color values. Float values are clamped.# +# Blend constant color values. Float values are clamped. Vectored versions are +# provided as well for driver convenience + system_value("blend_const_color_r_float", 1) system_value("blend_const_color_g_float", 1) system_value("blend_const_color_b_float", 1) system_value("blend_const_color_a_float", 1) +system_value("blend_const_color_rgba", 4) system_value("blend_const_color_rgba8888_unorm", 1) system_value("blend_const_color_aaaa8888_unorm", 1)