From 095c8fa19b25c7d548e51f290bf7db045cf36125 Mon Sep 17 00:00:00 2001
From: Vincent Lejeune <vljn.ovi@gmail.com>
Date: Mon, 24 Aug 2015 20:27:42 +0200
Subject: [PATCH] RSX/D3D12: Improve shader lookup performance

---
 rpcs3/Emu/RSX/Common/ProgramStateCache.h |  2 ++
 rpcs3/Emu/RSX/D3D12/D3D12PipelineState.h | 27 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/rpcs3/Emu/RSX/Common/ProgramStateCache.h b/rpcs3/Emu/RSX/Common/ProgramStateCache.h
index 6a732e7bd7..3c1f85bae3 100644
--- a/rpcs3/Emu/RSX/Common/ProgramStateCache.h
+++ b/rpcs3/Emu/RSX/Common/ProgramStateCache.h
@@ -223,6 +223,8 @@ private:
 		{
 			size_t hashValue = 0;
 			hashValue ^= std::hash<unsigned>()(key.vpIdx);
+			hashValue ^= std::hash<unsigned>()(key.fpIdx);
+			hashValue ^= std::hash<typename BackendTraits::PipelineProperties>()(key.properties);
 			return hashValue;
 		}
 	};
diff --git a/rpcs3/Emu/RSX/D3D12/D3D12PipelineState.h b/rpcs3/Emu/RSX/D3D12/D3D12PipelineState.h
index 38566e5ecc..d264b7ae28 100644
--- a/rpcs3/Emu/RSX/D3D12/D3D12PipelineState.h
+++ b/rpcs3/Emu/RSX/D3D12/D3D12PipelineState.h
@@ -47,6 +47,33 @@ struct D3D12PipelineProperties
 	}
 };
 
+template<typename T>
+size_t hashStructContent(const T& structure)
+{
+	char *data = (char*)(&structure);
+	size_t result = 0;
+	for (unsigned i = 0; i < sizeof(T); i++)
+		result ^= std::hash<char>()(data[i]);
+	return result;
+}
+
+namespace std
+{
+	template <>
+	struct hash<D3D12PipelineProperties> {
+		size_t operator()(const D3D12PipelineProperties &pipelineProperties) const {
+			size_t seed = hash<unsigned>()(pipelineProperties.DepthStencilFormat) ^
+				(hash<unsigned>()(pipelineProperties.RenderTargetsFormat) << 2) ^
+				(hash<unsigned>()(pipelineProperties.Topology) << 2) ^
+				(hash<unsigned>()(pipelineProperties.numMRT) << 4);
+			seed ^= hashStructContent(pipelineProperties.Blend);
+			seed ^= hashStructContent(pipelineProperties.DepthStencil);
+			seed ^= hashStructContent(pipelineProperties.Rasterization);
+			return hash<size_t>()(seed);
+		}
+	};
+}
+
 /** Storage for a shader
 *   Embeds the D3DBlob
 */