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<cat>Code.Shader</cat>⤶ <title>Custom Post-Processing</title>⤶ ⤶ # Setting up your material and rendering it⤶ ⤶ From the C# side you'll need to load a material with your custom shader and render it in the PostProcess event.⤶ ⤶ ```⤶ public CustomGame()⤶ {⤶ if(IsClient)⤶ {⤶ InitPostProcess();⤶ }⤶ }⤶ ⤶ private Material _postProcessMaterial;⤶ ⤶ public void InitPostProcess()⤶ {⤶ _postProcessMaterial = Material.Load("materials/post_process_example.vmat");⤶ }⤶ ⤶ [Event("render.postprocess")]⤶ public void PostProcess()⤶ {⤶ if(_postProcessMaterial != null)⤶ {⤶ Render.CopyFrameBuffer(false);⤶ Render.Material = _postProcessMaterial;⤶ Render.DrawScreenQuad();⤶ }⤶ }⤶ ```⤶ ⤶ This is a basic example using the post processing material `post_process_example.vmat`. We're loading the material on the client in the game's constructor.⤶ That's all we need to do from the C# side to get our post processing material to draw, now we just need to actually make the shader.⤶ ⤶ # Basic Post Processing Shader⤶ ⤶ ```⤶ HEADER⤶ {⤶ CompileTargets = ( IS_SM_50 && ( PC || VULKAN ) );⤶ Description = "Post Processing Shader";⤶ }⤶ ⤶ //=========================================================================================================================⤶ ⤶ FEATURES⤶ {⤶ #include "common/features.hlsl"⤶ }⤶ ⤶ //=========================================================================================================================⤶ ⤶ MODES⤶ {⤶ VrForward();⤶ Default();⤶ }⤶ ⤶ //=========================================================================================================================⤶ ⤶ COMMON⤶ {⤶ #include "system.fxc"⤶ #include "common.fxc"⤶ }⤶ ⤶ //=========================================================================================================================⤶ ⤶ struct VertexInput⤶ {⤶ float3 vPositionOs : POSITION < Semantic( PosXyz ); >;⤶ float2 vTexCoord : TEXCOORD0 < Semantic( LowPrecisionUv ); >; ⤶ };⤶ ⤶ //=========================================================================================================================⤶ ⤶ struct PixelInput⤶ {⤶ float4 vPositionPs : SV_Position;⤶ float2 vTexCoord : TEXCOORD0;⤶ };⤶ ⤶ //=========================================================================================================================⤶ ⤶ VS⤶ {⤶ PixelInput MainVs( VertexInput i )⤶ {⤶ PixelInput o;⤶ o.vPositionPs = float4(i.vPositionOs.xyz, 1.0f);⤶ o.vTexCoord = i.vTexCoord;⤶ return o;⤶ }⤶ }⤶ ⤶ //=========================================================================================================================⤶ ⤶ PS⤶ {⤶ struct PixelOutput⤶ {⤶ float4 vColor : SV_Target0;⤶ };⤶ ⤶ // grab the frame buffer texture⤶ CreateTexture2D( g_FrameBuffer )< Attribute("FrameBufferCopyTexture"); SrgbRead( false ); >;⤶ ⤶ PixelOutput MainPs( PixelInput i )⤶ {⤶ PixelOutput o;⤶ float2 uv = i.vTexCoord.xy; // uv from 0,0 in the top left to 1,1 in the bottom right⤶ ⤶ float4 color = Tex2D(g_FrameBuffer, uv.xy).rgba; // grab color from frame texture⤶ color = 1 - color; // invert color⤶ ⤶ o.vColor = color;⤶ return o;⤶ }⤶ }⤶ ```⤶ ⤶ This is a basic example post processing shader that inverts the screen color.

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