From b77576ced9609982eba2ebacee7dd751889e4bb4 Mon Sep 17 00:00:00 2001
From: Karen Lucknavalai <34335343+klucknav@users.noreply.github.com>
Date: Thu, 4 Apr 2024 09:57:20 -0700
Subject: [PATCH] Add missing vertex data prefix to Vulkan ShaderGen (#1762)

@clach found that the VkShaderGenerator::getVertexDataPrefix() is returning the empty string when it seems like it should be returning vertexData.GetInstance() + "." similar to the glsl and metal shader gens do.
---
 source/MaterialXGenGlsl/VkShaderGenerator.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/MaterialXGenGlsl/VkShaderGenerator.cpp b/source/MaterialXGenGlsl/VkShaderGenerator.cpp
index b57a4d2e94..5a91d96ff5 100644
--- a/source/MaterialXGenGlsl/VkShaderGenerator.cpp
+++ b/source/MaterialXGenGlsl/VkShaderGenerator.cpp
@@ -69,9 +69,9 @@ void VkShaderGenerator::emitInputs(GenContext& context, ShaderStage& stage) cons
     }
 }
 
-string VkShaderGenerator::getVertexDataPrefix(const VariableBlock&) const
+string VkShaderGenerator::getVertexDataPrefix(const VariableBlock& vertexData) const
 {
-    return EMPTY_STRING;
+    return vertexData.getInstance() + ".";
 }
 
 void VkShaderGenerator::emitOutputs(GenContext& context, ShaderStage& stage) const