45 lines
1.1 KiB
GLSL
45 lines
1.1 KiB
GLSL
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// Copyright 2020 Google LLC
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struct VSOutput
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{
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float4 Pos : SV_POSITION;
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[[vk::location(0)]] float3 Normal : NORMAL0;
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[[vk::location(1)]] float3 Color : COLOR0;
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[[vk::location(2)]] float3 WorldPos : POSITION0;
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};
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struct FSOutput
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{
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[[vk::location(0)]] float4 Color : SV_TARGET0;
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[[vk::location(1)]] float4 Position : SV_TARGET1;
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[[vk::location(2)]] float4 Normal : SV_TARGET2;
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[[vk::location(3)]] float4 Albedo : SV_TARGET3;
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};
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[[vk::constant_id(0)]] const float NEAR_PLANE = 0.1f;
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[[vk::constant_id(1)]] const float FAR_PLANE = 256.0f;
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float linearDepth(float depth)
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{
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float z = depth * 2.0f - 1.0f;
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return (2.0f * NEAR_PLANE * FAR_PLANE) / (FAR_PLANE + NEAR_PLANE - z * (FAR_PLANE - NEAR_PLANE));
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}
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FSOutput main(VSOutput input)
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{
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FSOutput output = (FSOutput)0;
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output.Position = float4(input.WorldPos, 1.0);
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float3 N = normalize(input.Normal);
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N.y = -N.y;
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output.Normal = float4(N, 1.0);
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output.Albedo.rgb = input.Color;
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// Store linearized depth in alpha component
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output.Position.a = linearDepth(input.Pos.z);
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// Write color attachments to avoid undefined behaviour (validation error)
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output.Color = float4(0.0, 0.0, 0.0, 0.0);
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return output;
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}
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