35 lines
957 B
GLSL
35 lines
957 B
GLSL
// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
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#include "./Flax/Common.hlsl"
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// [Quad Overdraw implementation based on https://blog.selfshadow.com/2012/11/12/counting-quads/ by Stephen Hill]
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Texture2D<uint> overdrawSRV : register(t0);
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float4 ToColour(uint v)
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{
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const uint nbColours = 10;
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const float4 colours[nbColours] =
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{
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float4(0, 0, 0, 255),
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float4(2, 147, 25, 255),
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float4(0, 255, 149, 255),
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float4(0, 255, 253, 255),
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float4(142, 250, 0, 255),
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float4(225, 251, 0, 255),
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float4(225, 147, 0, 255),
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float4(225, 38, 0, 255),
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float4(148, 17, 0, 255),
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float4(255, 255, 255, 255)
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};
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return colours[min(v, nbColours - 1)] / 255.0;
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}
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META_PS(true, FEATURE_LEVEL_ES2)
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float4 PS(float4 svPos : SV_POSITION) : SV_Target
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{
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uint2 quad = svPos.xy * 0.5;
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uint overdraw = overdrawSRV[quad];
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return ToColour(overdraw);
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}
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