diff options
| author | Alyssa Rosenzweig <[email protected]> | 2019-05-06 02:00:37 +0000 |
|---|---|---|
| committer | Alyssa Rosenzweig <[email protected]> | 2019-05-10 15:49:28 +0000 |
| commit | 006cafc2430bbc334644d9520c4847e5a6b71b17 (patch) | |
| tree | 168a643888b5c0040039c1f618272bbcac36ad55 /src | |
| parent | 6b0472b18199aecba30052ad7d2936de943d0cfb (diff) | |
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 <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/nir/nir_intrinsics.py | 5 |
1 files changed, 4 insertions, 1 deletions
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) |