compute shaders

funnyassets/shaders/agx.shader

@@ -0,0 +1,33 @@
+#include "macros.hlsl"
+
+// https://iolite-engine.com/blog_posts/minimal_agx_implementation
+float3 agxDefaultContrastApprox(float3 x) {
+	float3 x2 = x * x;
+	float3 x4 = x2 * x2;
+	float3 x6 = x4 * x2;
+
+	return - 17.86     * x6 * x
+		+ 78.01     * x6
+		- 126.7     * x4 * x
+		+ 92.06     * x4
+		- 28.72     * x2 * x
+		+ 4.361     * x2
+		- 0.1718    * x
+		+ 0.002857;
+}
+
+
+CS
+{
+	Texture2D<float4> g_in;
+	RWTexture2D<float4> g_out;
+
+	[numthreads(1,1,1)]
+	void csMain( int3 threadId : SV_DispatchThreadID )
+	{
+		float4 vColor = g_in.Load(threadId);
+		vColor.xyz = agxDefaultContrastApprox(vColor.xyz);
+		g_out.Store(threadId.xy, vColor);
+
+	}
+}

funnyassets/shaders/macros.hlsl

@@ -15,6 +15,12 @@
 #define PS namespace PixelShader_DO_NOT_USE
 #endif
 
+#ifdef CS_SHADER
+#define CS using namespace ComputeShader; namespace ComputeShader 
+#else
+#define CS namespace ComputeShader_DO_NOT_USE
+#endif
+
 #ifdef RAY_SHADER
 #define RAY using namespace RayShader; namespace RayShader 
 #else