- fix some postprocess bugs

src/gl/renderer/gl_renderbuffers.cpp

@@ -902,7 +902,7 @@ void FGLRenderBuffers::RenderEffect(const FString &name)
 			GLTextureFBs[step.Output.Texture].Bind();
 			break;
 
-		case PPTextureType::SceneNormal:
+		case PPTextureType::SceneColor:
 			BindSceneFB(false);
 			break;
 		}

src/hwrenderer/postprocessing/hw_postprocess.cpp

@@ -15,6 +15,7 @@ Postprocess::Postprocess()
 	Managers.Push(new PPCameraExposure());
 	Managers.Push(new PPColormap());
 	Managers.Push(new PPTonemap());
+	Managers.Push(new PPAmbientOcclusion());
 }
 
 Postprocess::~Postprocess()

wadsrc/static/shaders/glsl/tonemap.fp

@@ -68,12 +68,11 @@ layout(binding=1) uniform sampler2D PaletteLUT;
 
 vec3 Tonemap(vec3 color)
 {
-	/*ivec3 c = ivec3(clamp(color.rgb, vec3(0.0), vec3(1.0)) * 63.0 + 0.5);
+	ivec3 c = ivec3(clamp(color.rgb, vec3(0.0), vec3(1.0)) * 63.0 + 0.5);
 	int index = (c.r * 64 + c.g) * 64 + c.b;
 	int tx = index % 512;
 	int ty = index / 512;
-	return texelFetch(PaletteLUT, ivec2(tx, ty), 0).rgb;*/
-	return texture(PaletteLUT, TexCoord).rgb;
+	return texelFetch(PaletteLUT, ivec2(tx, ty), 0).rgb;
 }
 
 #else