vault backup: 2024-05-15 17:25:57

03-UnrealEngine/卡通渲染相关资料/渲染功能/PostProcess/ToonPostProcess.md

@@ -0,0 +1,53 @@
+---
+title: ToonPostProcess
+date: 2024-05-15 16:50:13
+excerpt: 
+tags: 
+rating: ⭐
+---
+# 实用代码
+代码位于DeferredShadingCommon.ush：
+```c++
+// @param UV - UV space in the GBuffer textures (BufferSize resolution)
+FGBufferData GetGBufferData(float2 UV, bool bGetNormalizedNormal = true)
+{
+#if GBUFFER_REFACTOR
+	return DecodeGBufferDataUV(UV,bGetNormalizedNormal);
+#else
+	float4 GBufferA = Texture2DSampleLevel(SceneTexturesStruct.GBufferATexture, SceneTexturesStruct_GBufferATextureSampler, UV, 0);
+	float4 GBufferB = Texture2DSampleLevel(SceneTexturesStruct.GBufferBTexture, SceneTexturesStruct_GBufferBTextureSampler, UV, 0);
+	float4 GBufferC = Texture2DSampleLevel(SceneTexturesStruct.GBufferCTexture, SceneTexturesStruct_GBufferCTextureSampler, UV, 0);
+	float4 GBufferD = Texture2DSampleLevel(SceneTexturesStruct.GBufferDTexture, SceneTexturesStruct_GBufferDTextureSampler, UV, 0);
+	float CustomNativeDepth = Texture2DSampleLevel(SceneTexturesStruct.CustomDepthTexture, SceneTexturesStruct_CustomDepthTextureSampler, UV, 0).r;
+
+	// BufferToSceneTextureScale is necessary when translucent materials are rendered in a render target 
+	// that has a different resolution than the scene color textures, e.g. r.SeparateTranslucencyScreenPercentage < 100.
+	int2 IntUV = (int2)trunc(UV * View.BufferSizeAndInvSize.xy * View.BufferToSceneTextureScale.xy);
+	uint CustomStencil = SceneTexturesStruct.CustomStencilTexture.Load(int3(IntUV, 0)) STENCIL_COMPONENT_SWIZZLE;
+
+	#if ALLOW_STATIC_LIGHTING
+		float4 GBufferE = Texture2DSampleLevel(SceneTexturesStruct.GBufferETexture, SceneTexturesStruct_GBufferETextureSampler, UV, 0);
+	#else
+		float4 GBufferE = 1;
+	#endif
+
+	float4 GBufferF = Texture2DSampleLevel(SceneTexturesStruct.GBufferFTexture, SceneTexturesStruct_GBufferFTextureSampler, UV, 0);
+
+	#if WRITES_VELOCITY_TO_GBUFFER
+		float4 GBufferVelocity = Texture2DSampleLevel(SceneTexturesStruct.GBufferVelocityTexture, SceneTexturesStruct_GBufferVelocityTextureSampler, UV, 0);
+	#else
+		float4 GBufferVelocity = 0;
+	#endif
+
+	float SceneDepth = CalcSceneDepth(UV);
+	
+	return DecodeGBufferData(GBufferA, GBufferB, GBufferC, GBufferD, GBufferE, GBufferF, GBufferVelocity, CustomNativeDepth, CustomStencil, SceneDepth, bGetNormalizedNormal, CheckerFromSceneColorUV(UV));
+#endif
+}
+
+// Minimal path for just the lighting model, used to branch around unlit pixels (skybox)
+uint GetShadingModelId(float2 UV)
+{
+	return DecodeShadingModelId(Texture2DSampleLevel(SceneTexturesStruct.GBufferBTexture, SceneTexturesStruct_GBufferBTextureSampler, UV, 0).a);
+}
+```