From: Eric Anholt <eric@anholt.net>
Date: Tue, 3 Jul 2018 22:56:48 +0000 (-0700)
Subject: v3d: Add support for GL_SAMPLE_ALPHA_TO_ONE.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5601ab3981c8ab5872230a6a9afc236d76fa1405;p=mesa.git

v3d: Add support for GL_SAMPLE_ALPHA_TO_ONE.

Fixes piglit ext_framebuffer_multisample-draw-buffers-alpha-to-one
---

diff --git a/src/broadcom/compiler/nir_to_vir.c b/src/broadcom/compiler/nir_to_vir.c
index 8012d483a72..89e4bc9fafa 100644
--- a/src/broadcom/compiler/nir_to_vir.c
+++ b/src/broadcom/compiler/nir_to_vir.c
@@ -1030,6 +1030,9 @@ emit_frag_end(struct v3d_compile *c)
                                 b = color[0];
                         }
 
+                        if (c->fs_key->sample_alpha_to_one)
+                                a = vir_uniform_f(c, 1.0);
+
                         if (c->fs_key->f32_color_rb & (1 << rt)) {
                                 inst = vir_MOV_dest(c, vir_reg(QFILE_TLBU, 0), r);
                                 inst->src[vir_get_implicit_uniform_src(inst)] =