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03-UnrealEngine/Rendering/Shader/给Pass传入SceneColor.md

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+---
+title: 给Pass传入SceneColor
+date: 2022-10-10 15:11:46
+excerpt: 
+tags: Rendering
+rating: ⭐
+---
+
+## 添加变量
+```c++
+SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SceneColorTexture)
+SHADER_PARAMETER_SAMPLER(SamplerState, SceneColorTextureSampler)
+```
+传入变量
+```c++
+PassParameters->SceneColorTexture = SceneColorTexture.Target;  
+PassParameters->SceneColorTextureSampler = TStaticSamplerState<>::GetRHI();
+```
+
+## Shader
+```c++
+Texture2D       SceneColorTexture;
+SamplerState    SceneColorTextureSampler;
+```
+
+```c++
+float4 SceneColor = SceneColorTexture.SampleLevel(SceneColorTextureSampler, SceneBufferUV, 0);
+```