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105 lines
4.1 KiB
105 lines
4.1 KiB
Shader "Hidden/Core/DebugOcclusionTest"
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{
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SubShader
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{
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Tags{ "RenderPipeline" = "HDRenderPipeline" }
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Pass
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{
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ZWrite Off
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Cull Off
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ZTest Always
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Blend SrcAlpha OneMinusSrcAlpha
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HLSLPROGRAM
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#pragma target 4.5
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#pragma only_renderers d3d11 playstation xboxone xboxseries vulkan metal switch switch2 webgpu
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#pragma vertex Vert
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#pragma fragment Frag
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//#pragma enable_d3d11_debug_symbols
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Debug.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/TextureXR.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl"
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#include "Packages/com.unity.render-pipelines.core/Runtime/GPUDriven/InstanceOcclusionCuller.cs.hlsl"
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#include "Packages/com.unity.render-pipelines.core/Runtime/GPUDriven/OcclusionCullingDebugShaderVariables.cs.hlsl"
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#include "Packages/com.unity.render-pipelines.core/Runtime/GPUDriven/OcclusionCullingCommon.cs.hlsl"
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StructuredBuffer<uint> _OcclusionDebugOverlay;
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struct Attributes
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{
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uint vertexID : SV_VertexID;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct Varyings
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{
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float4 positionCS : SV_POSITION;
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float2 uv : TEXCOORD0;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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Varyings Vert(Attributes input)
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{
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Varyings output;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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output.positionCS = GetFullScreenTriangleVertexPosition(input.vertexID);
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output.uv = GetFullScreenTriangleTexCoord(input.vertexID) * _DepthSizeInOccluderPixels.xy;
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return output;
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}
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// c.f. OverlayHeatMap
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float4 OverlayHeapMapColor(float cost, float costScreenTotal, float opacity)
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{
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// adjust color range. max clamp is to avoid scaling if 12 colors are enough.
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float colorRangeScale = 1.0 / max(1.0, costScreenTotal / (float)DEBUG_COLORS_COUNT);
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int colorIndex = (int)(1.0 + cost * colorRangeScale);
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colorIndex = clamp(colorIndex, 1, DEBUG_COLORS_COUNT-1); // skip colorIndex 0 (black)
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float4 col = kDebugColorGradient[colorIndex];
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float4 color = float4(PositivePow(col.rgb, 2.2), opacity * col.a);
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return color;
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}
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uint OcclusionDebugOverlayOffset(uint2 coord)
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{
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return OCCLUSIONCULLINGCOMMONCONFIG_DEBUG_PYRAMID_OFFSET + coord.x + _OccluderMipLayoutSizeX * coord.y;
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}
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float4 Frag(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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uint2 coord = uint2(input.uv);
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uint subviewIndex = unity_StereoEyeIndex;
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uint total = 0;
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for (int i = 0; i < OCCLUSIONCULLINGCOMMONCONFIG_MAX_OCCLUDER_MIPS; ++i)
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{
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int4 mipBounds = _OccluderMipBounds[i];
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mipBounds.y += subviewIndex * _OccluderMipLayoutSizeY;
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uint2 debugCoord = mipBounds.xy + uint2(min(int2(coord >> i), mipBounds.zw - 1));
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total += _OcclusionDebugOverlay[OcclusionDebugOverlayOffset(debugCoord)];
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}
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if(total == 0)
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return float4(0, 0, 0, 0);
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float cost = log2((float)total);
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uint screenTotal = _OcclusionDebugOverlay[0]; // This should be always >= 1, because total >= 1 at this point.
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float costScreenTotal = log2((float)screenTotal);
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return OverlayHeapMapColor(cost, costScreenTotal, 0.4);
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}
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ENDHLSL
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}
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}
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Fallback Off
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}
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