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tetris-c/vendor/SDL3_ttf-3.2.2/examples/testgputext/shaders/shader-sdf.frag.hlsl
2026-05-10 00:20:28 +02:00

20 lines
540 B
HLSL

Texture2D<float4> tex : register(t0, space2);
SamplerState samp : register(s0, space2);
struct PSInput {
float4 color : TEXCOORD0;
float2 tex_coord : TEXCOORD1;
};
struct PSOutput {
float4 color : SV_Target;
};
PSOutput main(PSInput input) {
PSOutput output;
const float smoothing = (1.0 / 16.0);
float distance = tex.Sample(samp, input.tex_coord).a;
float alpha = smoothstep(0.5 - smoothing, 0.5 + smoothing, distance);
output.color = float4(input.color.rgb, input.color.a * alpha);
return output;
}