data storage

shaders/fisheye-reproject/shader.slang

@@ -61,6 +61,20 @@ float normalizedFisheyeRadius(float theta, float halfFov)
 	return theta / safeHalfFov;
 }
 
+float sourceUvRectMask(float2 uv, float2 inputResolution)
+{
+	float2 pixel = 1.0 / max(inputResolution, float2(1.0, 1.0));
+	float cut = max(sourceEdgeCut, 0.0);
+	float feather = max(sourceEdgeFeather, 0.0);
+	float2 featherSize = max(float2(feather, feather), pixel * 0.5);
+
+	float left = smoothstep(cut, cut + featherSize.x, uv.x);
+	float right = 1.0 - smoothstep(1.0 - cut - featherSize.x, 1.0 - cut, uv.x);
+	float top = smoothstep(cut, cut + featherSize.y, uv.y);
+	float bottom = 1.0 - smoothstep(1.0 - cut - featherSize.y, 1.0 - cut, uv.y);
+	return saturate(left * right * top * bottom);
+}
+
 float4 shadeVideo(ShaderContext context)
 {
 	float2 screen = float2(context.uv.x * 2.0 - 1.0, 1.0 - context.uv.y * 2.0);
@@ -99,5 +113,7 @@ float4 shadeVideo(ShaderContext context)
 	if (sourceUv.x < 0.0 || sourceUv.x > 1.0 || sourceUv.y < 0.0 || sourceUv.y > 1.0)
 		return outsideColor;
 
-	return sampleVideo(sourceUv);
+	float sourceMask = sourceUvRectMask(sourceUv, context.inputResolution);
+	float4 sourceColor = sampleVideo(sourceUv);
+	return saturate(lerp(outsideColor, sourceColor, sourceMask));
 }