Module: Mesa
Branch: master
Commit: 5601ab3981c8ab5872230a6a9afc236d76fa1405
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=5601ab3981c8ab5872230a6a9afc236d76fa1405

Author: Eric Anholt <[email protected]>
Date:   Tue Jul  3 15:56:48 2018 -0700

v3d: Add support for GL_SAMPLE_ALPHA_TO_ONE.

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

---

 src/broadcom/compiler/nir_to_vir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/broadcom/compiler/nir_to_vir.c 
b/src/broadcom/compiler/nir_to_vir.c
index 8012d483a7..89e4bc9faf 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)] =

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