13 lines
487 B
Plaintext
13 lines
487 B
Plaintext
float4 shadeVideo(ShaderContext context)
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{
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float2 count = max(pixelCount, float2(1.0, 1.0));
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float2 cell = floor(context.uv * count);
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float2 sampledUv = (cell + 0.5) / count;
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float4 color = sampleVideo(clamp(sampledUv, 0.0, 1.0));
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float2 local = frac(context.uv * count);
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float gridLine = 1.0 - step(0.035, min(min(local.x, 1.0 - local.x), min(local.y, 1.0 - local.y)));
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color.rgb = lerp(color.rgb, gridColor.rgb, gridLine * saturate(gridAmount) * gridColor.a);
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return color;
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}
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