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SaschaWillemsSaschaWillems
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Added slang shaders for pipeline samples
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‎shaders/slang/pipelines/phong.slang‎

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/* 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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float3 Pos;
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float3 Normal;
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float3 Color;
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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 model;
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float4 lightPos;
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};
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ConstantBuffer<UBO> ubo;
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Sampler2D samplerColorMap;
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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.Pos = mul(ubo.projection, mul(ubo.model, float4(input.Pos.xyz, 1.0)));
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float4 pos = mul(ubo.model, float4(input.Pos, 1.0));
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output.Normal = mul((float3x3)ubo.model, input.Normal);
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float3 lPos = mul((float3x3)ubo.model, ubo.lightPos.xyz);
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output.LightVec = lPos - 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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// Desaturate color
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float3 color = lerp(input.Color, dot(float3(0.2126,0.7152,0.0722), input.Color).xxx, 0.65);
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// High ambient colors because mesh materials are pretty dark
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float3 ambient = color * float3(1.0, 1.0, 1.0);
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float3 N = normalize(input.Normal);
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float3 L = normalize(input.LightVec);
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float3 V = normalize(input.ViewVec);
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float3 R = reflect(-L, N);
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float3 diffuse = max(dot(N, L), 0.0) * color;
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float3 specular = pow(max(dot(R, V), 0.0), 32.0) * float3(0.35, 0.35, 0.35);
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return float4(ambient + diffuse * 1.75 + specular, 1.0);
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}

‎shaders/slang/pipelines/toon.slang‎

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/* 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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float3 Pos;
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float3 Normal;
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float3 Color;
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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 model;
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float4 lightPos;
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};
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ConstantBuffer<UBO> ubo;
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Sampler2D samplerColorMap;
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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.Pos = mul(ubo.projection, mul(ubo.model, float4(input.Pos.xyz, 1.0)));
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float4 pos = mul(ubo.model, float4(input.Pos, 1.0));
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output.Normal = mul((float3x3)ubo.model, input.Normal);
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float3 lPos = mul((float3x3)ubo.model, ubo.lightPos.xyz);
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output.LightVec = lPos - 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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// Desaturate color
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float3 color = lerp(input.Color, dot(float3(0.2126,0.7152,0.0722), input.Color).xxx, 0.65);
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// High ambient colors because mesh materials are pretty dark
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float3 ambient = color * float3(1.0, 1.0, 1.0);
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float3 N = normalize(input.Normal);
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float3 L = normalize(input.LightVec);
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float3 V = normalize(input.ViewVec);
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float3 R = reflect(-L, N);
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float3 diffuse = max(dot(N, L), 0.0) * color;
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float3 specular = pow(max(dot(R, V), 0.0), 16.0) * float3(0.75, 0.75, 0.75);
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float intensity = dot(N,L);
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float shade = 1.0;
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shade = intensity < 0.5 ? 0.75 : shade;
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shade = intensity < 0.35 ? 0.6 : shade;
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shade = intensity < 0.25 ? 0.5 : shade;
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shade = intensity < 0.1 ? 0.25 : shade;
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return float4(input.Color * 3.0 * shade, 1);
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}

‎shaders/slang/pipelines/wireframe.slang‎

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/* 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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float2 UV;
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float3 Color;
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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 Color;
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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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};
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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.Pos = mul(ubo.projection, mul(ubo.model, input.Pos));
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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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return float4(input.Color * 1.5, 1);
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}

‎shaders/slang/pipelinestatistics/scene.slang‎

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/* 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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float3 Pos;
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float3 Normal;
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float3 Color;
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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 HSOutput
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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 DSOutput
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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 ConstantsHSOutput
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{
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float TessLevelOuter[3] : SV_TessFactor;
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float TessLevelInner[2] : SV_InsideTessFactor;
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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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float4 lightPos;
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};
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ConstantBuffer<UBO> ubo;
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struct PushConsts {
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float3 objPos;
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};
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[[vk::push_constant]] PushConsts pushConsts;
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ConstantsHSOutput ConstantsHS(InputPatch<VSOutput, 3> patch)
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{
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ConstantsHSOutput output;
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output.TessLevelInner[0] = 2.0;
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output.TessLevelInner[1] = 2.0;
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output.TessLevelOuter[0] = 1.0;
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output.TessLevelOuter[1] = 1.0;
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output.TessLevelOuter[2] = 1.0;
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return output;
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}
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[shader("hull")]
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[domain("tri")]
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[partitioning("integer")]
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[outputtopology("triangle_ccw")]
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[outputcontrolpoints(3)]
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[patchconstantfunc("ConstantsHS")]
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[maxtessfactor(20.0f)]
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HSOutput hullMain(InputPatch<VSOutput, 3> patch, uint InvocationID: SV_OutputControlPointID)
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{
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HSOutput output;
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output.Pos = patch[InvocationID].Pos;
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output.Normal = patch[InvocationID].Normal;
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output.Color = patch[InvocationID].Color;
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output.ViewVec = patch[InvocationID].ViewVec;
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output.LightVec = patch[InvocationID].LightVec;
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return output;
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}
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[shader("domain")]
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[domain("tri")]
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DSOutput domainMain(ConstantsHSOutput input, float3 TessCoord: SV_DomainLocation, const OutputPatch<HSOutput, 3> patch)
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{
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DSOutput output;
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output.Pos = (TessCoord.x * patch[2].Pos) + (TessCoord.y * patch[1].Pos) + (TessCoord.z * patch[0].Pos);
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output.Normal = TessCoord.x * patch[2].Normal + TessCoord.y * patch[1].Normal + TessCoord.z * patch[0].Normal;
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output.ViewVec = TessCoord.x * patch[2].ViewVec + TessCoord.y * patch[1].ViewVec + TessCoord.z * patch[0].ViewVec;
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output.LightVec = TessCoord.x * patch[2].LightVec + TessCoord.y * patch[1].LightVec + TessCoord.z * patch[0].LightVec;
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output.Color = patch[0].Color;
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return output;
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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.Color = input.Color;
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float3 locPos = mul(ubo.modelview, float4(input.Pos, 1.0)).xyz;
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float3 worldPos = mul(ubo.modelview, float4(input.Pos + pushConsts.objPos, 1.0)).xyz;
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output.Pos = mul(ubo.projection, float4(worldPos, 1.0));
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float4 pos = mul(ubo.modelview, float4(worldPos, 1.0));
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output.Normal = mul((float3x3)ubo.modelview, input.Normal);
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output.LightVec = ubo.lightPos.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 V = normalize(input.ViewVec);
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float3 R = reflect(-L, N);
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float3 diffuse = max(dot(N, L), 0.0) * input.Color;
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float3 specular = pow(max(dot(R, V), 0.0), 8.0) * float3(0.75, 0.75, 0.75);
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return float4(diffuse + specular, 0.5);
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}

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