Fixed issues after merging

SMCode/SM.Base/PostEffects/PostProcessUtility.cs

@@ -0,0 +1,73 @@
+#region usings
+
+using OpenTK.Graphics.OpenGL4;
+using SM.Base.PostProcess;
+using SM.Base.Utility;
+using SM.OGL.Framebuffer;
+
+#endregion
+
+namespace SM.Base.PostEffects
+{
+    /// <summary>
+    /// This class has some utility for render pipelines 
+    /// </summary>
+    public static class PostProcessUtility
+    {
+        private static readonly PostProcessShader _hdrExposureShader =
+            new PostProcessShader(AssemblyUtility.ReadAssemblyFile(SMRenderer.PostProcessPath + ".finalize_hdr.glsl"));
+
+        private static readonly PostProcessShader _gammaShader =
+            new PostProcessShader(
+                AssemblyUtility.ReadAssemblyFile(SMRenderer.PostProcessPath + ".finalize_gamma.glsl"));
+
+        /// <summary>
+        /// The gamma that is used for <see cref="FinalizeGamma"/> and <see cref="FinalizeHDR"/>.
+        /// </summary>
+        public static float Gamma = 2.2f;
+
+        /// <summary>
+        /// This resolves a multisampled framebuffer to a non-multisampled renderbuffer.
+        /// </summary>
+        /// <param name="multisampledBuffers"></param>
+        /// <param name="target"></param>
+        public static void ResolveMultisampledBuffers(Framebuffer multisampledBuffers, Framebuffer target)
+        {
+            multisampledBuffers.Activate(FramebufferTarget.ReadFramebuffer);
+            target.Activate(FramebufferTarget.DrawFramebuffer);
+            GL.BlitFramebuffer(0, 0, (int) multisampledBuffers.Size.X, (int) multisampledBuffers.Size.Y, 0, 0,
+                (int) target.Size.X, (int) target.Size.Y, ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit,
+                BlitFramebufferFilter.Nearest);
+
+            target.Activate();
+        }
+
+        /// <summary>
+        /// This converts HDR to LDR and applys gamma.
+        /// </summary>
+        /// <param name="attachment"></param>
+        /// <param name="exposure"></param>
+        public static void FinalizeHDR(ColorAttachment attachment, float exposure)
+        {
+            _hdrExposureShader.Draw(u =>
+            {
+                u["Gamma"].SetUniform1(Gamma);
+                u["Exposure"].SetUniform1(exposure);
+                u["Scene"].SetTexture(attachment);
+            });
+        }
+
+        /// <summary>
+        /// This applys gamma
+        /// </summary>
+        /// <param name="attachment"></param>
+        public static void FinalizeGamma(ColorAttachment attachment)
+        {
+            _gammaShader.Draw(u =>
+            {
+                u["Gamma"].SetUniform1(Gamma);
+                u["Scene"].SetTexture(attachment);
+            });
+        }
+    }
+}