56 lines
No EOL
1.2 KiB
Text
56 lines
No EOL
1.2 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 : POSITION0;
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float3 Normal;
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float3 Color;
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// Instanced attributes
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float3 instancePos;
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float instanceScale;
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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 ViewVec;
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float3 LightVec;
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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 modelview;
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};
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ConstantBuffer<UBO> ubo;
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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.Color = input.Color;
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output.Normal = input.Normal;
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float4 pos = float4((input.Pos.xyz * input.instanceScale) + input.instancePos, 1.0);
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output.Pos = mul(ubo.projection, mul(ubo.modelview, pos));
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float4 wPos = mul(ubo.modelview, float4(pos.xyz, 1.0));
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float4 lPos = float4(0.0, 10.0, 50.0, 1.0);
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output.LightVec = lPos.xyz - pos.xyz;
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output.ViewVec = -pos.xyz;
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return output;
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}
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[shader("fragment")]
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float4 fragmentMain(VSOutput input)
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{
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float3 N = normalize(input.Normal);
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float3 L = normalize(input.LightVec);
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float3 ambient = float3(0.25, 0.25, 0.25);
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float3 diffuse = max(dot(N, L), 0.0).xxx;
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return float4((ambient + diffuse) * input.Color, 1.0);
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} |