shaders for Windows Terminal

grid.hlsl

Texture2D shaderTexture;
SamplerState samplerState;

cbuffer PixelShaderSettings {
  float  Time;
  float  Scale;
  float2 Resolution;
  float4 Background;
};

float4 main(float4 pos : SV_POSITION, float2 tex : TEXCOORD) : SV_TARGET
{
    float4 color = shaderTexture.Sample(samplerState, tex);
    if (tex.x * Resolution.x % 25 < 1.0 || tex.y * Resolution.y % 25 < 1.0)
    {
       color.xyz += float3(0.1, 0.2, 0.15);
    }
    return color;
}

rainbow.hlsl

Texture2D shaderTexture;
SamplerState samplerState;

cbuffer PixelShaderSettings {
  float  Time;
  float  Scale;
  float2 Resolution;
  float4 Background;
};


float3 hsv2rgb(float3 hsv)
{
    // ref. https://gist.github.com/iUltimateLP/5129149bf82757b31542
    float4 K = float4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
    float3 p = abs(frac(hsv.xxx + K.xyz) * 6.0 - K.www);
    return hsv.z * lerp(K.xxx, clamp(p - K.xxx, 0.0, 1.0), hsv.y);
}

float4 main(float4 pos : SV_POSITION, float2 tex : TEXCOORD) : SV_TARGET
{
    float4 color = shaderTexture.Sample(samplerState, tex);
    
    // Timeは今の所0固定っぽい
    // https://github.com/microsoft/terminal/blob/37cbcc3e2bf150cd6878690225f4c5b51704ccd8/src/renderer/dx/DxRenderer.cpp#L459
    // float3 bgcolor = hsv2rgb(float3(Time % 1000 / 1000.0, 1.0, 1.0));
    
    // 仕方がないのでウィンドウサイズを変えると色が変わるようにしてみる
    float3 c = hsv2rgb(float3(Resolution.x * Resolution.y % 2000 / 2000.0, 1.0, 1.0));
    color.xyz += c * 0.3;
    return color;
}

x4.hlsl

Texture2D shaderTexture;
SamplerState samplerState;

cbuffer PixelShaderSettings {
  float  Time;
  float  Scale;
  float2 Resolution;
  float4 Background;
};

float4 main(float4 pos : SV_POSITION, float2 tex : TEXCOORD) : SV_TARGET
{
    return shaderTexture.Sample(samplerState, float2(tex.x * 4 % 1.0, tex.y * 4 % 1.0));
}

Pixel Shaders in Windows Terminal
https://github.com/microsoft/terminal/tree/main/samples/PixelShaders