From fa545a9faeaf884dc1b1bf53bedb2046025bb0a8 Mon Sep 17 00:00:00 2001
From: assiduous <assiduous@diligentgraphics.com>
Date: Tue, 9 Mar 2021 21:47:39 -0800
Subject: Unified PRS hash calculation

---
 .../include/PipelineResourceSignatureBase.hpp               | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'Graphics/GraphicsEngine')

diff --git a/Graphics/GraphicsEngine/include/PipelineResourceSignatureBase.hpp b/Graphics/GraphicsEngine/include/PipelineResourceSignatureBase.hpp
index c2f3e2bc..cf0870fc 100644
--- a/Graphics/GraphicsEngine/include/PipelineResourceSignatureBase.hpp
+++ b/Graphics/GraphicsEngine/include/PipelineResourceSignatureBase.hpp
@@ -45,6 +45,7 @@
 #include "PlatformMisc.hpp"
 #include "SRBMemoryAllocator.hpp"
 #include "ShaderResourceCacheCommon.hpp"
+#include "HashUtils.hpp"
 
 namespace Diligent
 {
@@ -593,6 +594,18 @@ protected:
         return SamplerInd;
     }
 
+    void CalculateHash()
+    {
+        const auto* const pThisImpl = static_cast<const PipelineResourceSignatureImplType*>(this);
+
+        m_Hash = CalculatePipelineResourceSignatureDescHash(this->m_Desc);
+        for (Uint32 i = 0; i < this->m_Desc.NumResources; ++i)
+        {
+            const auto& Attr = pThisImpl->GetResourceAttribs(i);
+            HashCombine(m_Hash, Attr.GetHash());
+        }
+    }
+
 protected:
     std::unique_ptr<void, STDDeleterRawMem<void>> m_pRawMemory;
 
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