Example shaders

shaders/temporal-echo/shader.slang

@@ -0,0 +1,20 @@
+float4 shadeVideo(ShaderContext context)
+{
+	int stride = int(clamp(frameStride, 1.0, 6.0) + 0.5);
+	float3 echo = float3(0.0, 0.0, 0.0);
+	float total = 0.0;
+	float weight = 1.0;
+
+	for (int i = 1; i <= 6; ++i)
+	{
+		int frame = i * stride;
+		float3 sampleColor = sampleTemporalHistory(frame, context.uv).rgb * echoTint.rgb;
+		echo += sampleColor * weight;
+		total += weight;
+		weight *= saturate(decay);
+	}
+
+	float3 echoColor = echo / max(total, 0.0001);
+	float amount = saturate(echoAmount) * echoTint.a;
+	return float4(lerp(context.sourceColor.rgb, echoColor, amount), context.sourceColor.a);
+}