osc multi arguments

shaders/video-transform/shader.slang

@@ -0,0 +1,44 @@
+static const float PI = 3.14159265358979323846;
+
+float2 rotateAroundCenter(float2 uv, float radians)
+{
+	float2 centered = uv - 0.5;
+	float s = sin(radians);
+	float c = cos(radians);
+	return float2(c * centered.x - s * centered.y, s * centered.x + c * centered.y) + 0.5;
+}
+
+float mirroredCoordinate(float coordinate)
+{
+	float wrapped = frac(coordinate * 0.5) * 2.0;
+	return wrapped <= 1.0 ? wrapped : 2.0 - wrapped;
+}
+
+float2 applyEdgeMode(float2 uv, out bool inside)
+{
+	inside = uv.x >= 0.0 && uv.x <= 1.0 && uv.y >= 0.0 && uv.y <= 1.0;
+
+	if (edgeMode == 1)
+		return clamp(uv, 0.0, 1.0);
+	if (edgeMode == 2)
+		return frac(uv);
+	if (edgeMode == 3)
+		return float2(mirroredCoordinate(uv.x), mirroredCoordinate(uv.y));
+
+	return uv;
+}
+
+float4 shadeVideo(ShaderContext context)
+{
+	float safeZoom = max(zoom, 0.001);
+	float2 sourceUv = (context.uv - 0.5) / safeZoom + 0.5;
+	sourceUv -= pan;
+	sourceUv = rotateAroundCenter(sourceUv, -rotationDegrees * (PI / 180.0));
+
+	bool inside = false;
+	float2 sampledUv = applyEdgeMode(sourceUv, inside);
+	if (!inside && edgeMode == 0)
+		return outsideColor;
+
+	return sampleVideo(sampledUv);
+}