16 lines
728 B
Plaintext
16 lines
728 B
Plaintext
float4 shadeVideo(ShaderContext context)
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{
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float clampedHoldFrames = clamp(holdFrames, 0.0, 7.0);
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int lowerHoldLength = int(floor(clampedHoldFrames)) + 1;
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int upperHoldLength = min(lowerHoldLength + 1, 8);
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float fractional = frac(clampedHoldFrames);
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int lowerPhase = int(context.frameCount) % lowerHoldLength;
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int upperPhase = int(context.frameCount) % upperHoldLength;
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float4 lowerHeld = lowerPhase == 0 ? context.sourceColor : sampleTemporalHistory(lowerPhase - 1, context.uv);
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float4 upperHeld = upperPhase == 0 ? context.sourceColor : sampleTemporalHistory(upperPhase - 1, context.uv);
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float4 held = lerp(lowerHeld, upperHeld, fractional);
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return lerp(context.sourceColor, held, clamp(blendAmount, 0.0, 1.0));
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}
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