From 6577a63d368afa57d5f29df40e524af30eaabffa Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Wed, 2 Jun 2021 00:48:49 -0400
Subject: glsl: skip gl_ViewportIndex write if device does not support it

---
 src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp')

diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
index c48492a17..ebaf50abd 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
@@ -226,6 +226,11 @@ void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, std::string_view val
         ctx.Add("gl_Position.{}={};", swizzle, value);
         break;
     case IR::Attribute::ViewportIndex:
+        if (ctx.stage != Stage::Geometry && !ctx.supports_viewport_layer) {
+            // LOG_WARNING(..., "Shader stores viewport index but device does not support viewport
+            // layer extension");
+            break;
+        }
         ctx.Add("gl_ViewportIndex=floatBitsToInt({});", value);
         break;
     case IR::Attribute::ClipDistance0:
-- 
cgit v1.2.3