78 lines
No EOL
1.8 KiB
Text
78 lines
No EOL
1.8 KiB
Text
/* Copyright (c) 2025, Sascha Willems
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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struct VSInput
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{
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float4 Pos;
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float3 Color;
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float3 Normal;
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};
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struct VSOutput
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{
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float4 Pos : SV_POSITION;
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float3 Normal;
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float3 Color;
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float3 WorldPos;
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float3 Tangent;
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};
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struct FSOutput
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{
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float4 Color : SV_TARGET0;
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float4 Position : SV_TARGET1;
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float4 Normal : SV_TARGET2;
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float4 Albedo : SV_TARGET3;
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};
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struct UBO
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{
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float4x4 projection;
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float4x4 model;
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float4x4 view;
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};
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ConstantBuffer<UBO> ubo;
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[[SpecializationConstant]] const float NEAR_PLANE = 0.1;
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[[SpecializationConstant]] const float FAR_PLANE = 256.0;
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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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[shader("vertex")]
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VSOutput vertexMain(VSInput input)
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{
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VSOutput output;
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output.Pos = mul(ubo.projection, mul(ubo.view, mul(ubo.model, input.Pos)));
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// Vertex position in world space
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output.WorldPos = mul(ubo.model, input.Pos).xyz;
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// GL to Vulkan coord space
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output.WorldPos.y = -output.WorldPos.y;
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// Normal in world space
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output.Normal = mul((float3x3)ubo.model, normalize(input.Normal));
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// Currently just vertex color
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output.Color = input.Color;
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return output;
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}
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[shader("fragment")]
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FSOutput fragmentMain(VSOutput input)
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{
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FSOutput output;
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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);
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return output;
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} |