Refactor

runtime/templates/shader_wrapper.slang.in

@@ -0,0 +1,89 @@
+struct FragmentInput
+{
+	float4 position : SV_Position;
+	float2 texCoord : TEXCOORD0;
+};
+
+struct ShaderContext
+{
+	float2 uv;
+	float4 sourceColor;
+	float2 inputResolution;
+	float2 outputResolution;
+	float time;
+	float frameCount;
+	float mixAmount;
+	float bypass;
+	int sourceHistoryLength;
+	int temporalHistoryLength;
+};
+
+cbuffer GlobalParams
+{
+	float gTime;
+	float2 gInputResolution;
+	float2 gOutputResolution;
+	float gFrameCount;
+	float gMixAmount;
+	float gBypass;
+	int gSourceHistoryLength;
+	int gTemporalHistoryLength;
+{{PARAMETER_UNIFORMS}}};
+
+Sampler2D<float4> gVideoInput;
+{{SOURCE_HISTORY_SAMPLERS}}{{TEMPORAL_HISTORY_SAMPLERS}}{{TEXTURE_SAMPLERS}}
+float4 sampleVideo(float2 tc)
+{
+	return gVideoInput.Sample(tc);
+}
+
+float4 sampleSourceHistory(int framesAgo, float2 tc)
+{
+	if (gSourceHistoryLength <= 0)
+		return sampleVideo(tc);
+	int clampedIndex = framesAgo;
+	if (clampedIndex < 0)
+		clampedIndex = 0;
+	if (clampedIndex >= gSourceHistoryLength)
+		clampedIndex = gSourceHistoryLength - 1;
+	switch (clampedIndex)
+	{
+{{SOURCE_HISTORY_SWITCH_CASES}}	default: return sampleVideo(tc);
+	}
+}
+
+float4 sampleTemporalHistory(int framesAgo, float2 tc)
+{
+	if (gTemporalHistoryLength <= 0)
+		return sampleVideo(tc);
+	int clampedIndex = framesAgo;
+	if (clampedIndex < 0)
+		clampedIndex = 0;
+	if (clampedIndex >= gTemporalHistoryLength)
+		clampedIndex = gTemporalHistoryLength - 1;
+	switch (clampedIndex)
+	{
+{{TEMPORAL_HISTORY_SWITCH_CASES}}	default: return sampleVideo(tc);
+	}
+}
+
+#include "{{USER_SHADER_INCLUDE}}"
+
+[shader("fragment")]
+float4 fragmentMain(FragmentInput input) : SV_Target
+{
+	ShaderContext context;
+	context.uv = input.texCoord;
+	context.sourceColor = sampleVideo(context.uv);
+	context.inputResolution = gInputResolution;
+	context.outputResolution = gOutputResolution;
+	context.time = gTime;
+	context.frameCount = gFrameCount;
+	context.mixAmount = gMixAmount;
+	context.bypass = gBypass;
+	context.sourceHistoryLength = gSourceHistoryLength;
+	context.temporalHistoryLength = gTemporalHistoryLength;
+	float4 effectedColor = {{ENTRY_POINT_CALL}};
+	float mixValue = clamp(gBypass > 0.5 ? 0.0 : gMixAmount, 0.0, 1.0);
+	return lerp(context.sourceColor, effectedColor, mixValue);
+}