From: Eric Anholt <eric@anholt.net>
Date: Wed, 19 Sep 2018 19:35:51 +0000 (-0700)
Subject: gallium/ttn: Fix the type of gl_FragDepth.
X-Git-Tag: upstream/19.0.0~2200
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=da15a0d88ea1a29968ee624186d895fe5ff0f574;p=platform%2Fupstream%2Fmesa.git

gallium/ttn: Fix the type of gl_FragDepth.

In TGSI we have a vec4 of which only .z is used, but for NIR we should be
using a float the same as other NIR IR.  We were already moving TGSI's .z
to the .x channel.

Acked-by: Rob Clark <robdclark@gmail.com>
---

diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c
index 12114dc..4f7f900 100644
--- a/src/gallium/auxiliary/nir/tgsi_to_nir.c
+++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c
@@ -344,6 +344,7 @@ ttn_emit_declaration(struct ttn_compile *c)
                }
                case TGSI_SEMANTIC_POSITION:
                   var->data.location = FRAG_RESULT_DEPTH;
+                  var->type = glsl_float_type();
                   break;
                default:
                   fprintf(stderr, "Bad TGSI semantic: %d/%d\n",