Added slang shaders for additional samples

shaders/slang/radialblur/radialblur.slang

@@ -0,0 +1,48 @@
+/* Copyright (c) 2025, Sascha Willems
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    float2 UV;
+};
+
+struct UBO
+{
+    float radialBlurScale;
+    float radialBlurStrength;
+    float2 radialOrigin;
+};
+ConstantBuffer<UBO> ubo;
+
+Sampler2D samplerColor;
+
+[shader("vertex")]
+VSOutput vertexMain(uint VertexIndex: SV_VertexID)
+{
+    VSOutput output;
+    output.UV = float2((VertexIndex << 1) & 2, VertexIndex & 2);
+    output.Pos = float4(output.UV * 2.0f - 1.0f, 0.0f, 1.0f);
+    return output;
+}
+
+[shader("fragment")]
+float4 fragmentMain(VSOutput input)
+{
+    int2 texDim;
+    samplerColor.GetDimensions(texDim.x, texDim.y);
+	float2 radialSize = float2(1.0 / texDim.x, 1.0 / texDim.y);
+	float2 UV = input.UV;
+	float4 color = float4(0.0, 0.0, 0.0, 0.0);
+	UV += radialSize * 0.5 - ubo.radialOrigin;
+	#define samples 32
+	for (int i = 0; i < samples; i++)
+	{
+        float scale = 1.0 - ubo.radialBlurScale * (float(i) / float(samples - 1));
+        color += samplerColor.Sample(UV * scale + ubo.radialOrigin);
+	}
+	return (color / samples) * ubo.radialBlurStrength;
+}