Changeset 3331 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/ssao.cg

Timestamp:

03/05/09 16:06:46 (15 years ago)

Author:

mattausch

Message:

performance testing

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/ssao.cg (modified) (16 diffs)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/ssao.cg

@@ -182 +182 @@
                          float3 normal,
                          float3 centerPosition,
-                         float scaleFactor,
+                         float radius,
                          float3 bl,
                          float3 br,
@@ -223 +223 @@
                 
                 // weight with projected coordinate to reach similar kernel size for near and far
-                const float2 texcoord = IN.texCoord.xy + offset * scaleFactor;
+                const float2 texcoord = IN.texCoord.xy + offset * radius;
 
                 const float4 sampleColor = tex2Dlod(colors, float4(texcoord, .0f, .0f));
@@ -235 +235 @@
 
                 const float minDist = 1e-6f;
-                const float scaleFactor = 1e-3f;
+                const float delta = 1e-3f;
 
                 const float lengthToSample = length(dirSample);
-                const float sampleWeight = 1.0f / (lengthToSample + scaleFactor);
+                const float sampleWeight = 1.0f / (lengthToSample + delta);
 
                 dirSample /= max(lengthToSample, minDist); // normalize
@@ -329 +329 @@
                         float3 normal,
                         float3 centerPosition,
-                        float scaleFactor,
+                        float radius,
                         float3 bl,
                         float3 br,
@@ -370 +370 @@
 
                 // weight with projected coordinate to reach similar kernel size for near and far
-                const float2 texcoord = IN.texCoord.xy + offset * scaleFactor;
+                const float2 texcoord = IN.texCoord.xy + offset * radius;
 
                 const float4 sampleColor = tex2Dlod(colors, float4(texcoord, .0f, .0f));
@@ -382 +382 @@
 
                 const float minDist = 1e-6f;
-                const float scaleFactor = 1e-3f;
+                const float delta = 1e-3f;
 
                 const float lengthToSample = length(dirSample);
-                const float sampleWeight = 1.0f / (lengthToSample + scaleFactor);
+                const float sampleWeight = 1.0f / (lengthToSample + delta);
 
                 dirSample /= max(length(dirSample), minDist); // normalize
@@ -399 +399 @@
 
                 ++ numSamples;
-
+#ifdef PERFORMANCE_TEST
                 // check if the samples have been valid in the last frame
                 // only mark sample as invalid if in the last / current frame
@@ -411 +411 @@
                 // or if the angle is small enough
                 // to have any influence in the current or last frame
+
 #if 1
                 const float partlyResetThres = 1.0f;
@@ -435 +436 @@
                 }
 #endif
+
+#endif // PERFORMANCE_TEST
+
         }
 
@@ -488 +492 @@
         const float4 eyeSpacePos = float4(-viewDir * eyeSpaceDepth, 1.0f);
 
-        float3 diffVec = tex2Dlod(attribsTex, float4(IN.texCoord, 0, 0)).xyz;
-        
-
         ////////////////
         //-- calculcate the current projected posiion (also used for next frame)
@@ -497 +498 @@
         const float invw = 1.0f / projPos.w;
         projPos *= invw;
-        float scaleFactor = kernelRadius * invw;
+        
+        //const float radiusMult = kernelRadius;
+        const float radiusMult = 3e-2;
+        //const float radiusMult = kernelRadius * invw;
+        
+#ifdef PERFORMANCE_TEST 
+
+        float3 diffVec = tex2Dlod(attribsTex, float4(IN.texCoord, 0, 0)).xyz;
 
         const float sqrMoveSpeed = SqrLen(diffVec);
@@ -514 +522 @@
                                                                         diffVec
                                                                         );
-
+        
         const float oldSsao = temporalVals.x;
         
@@ -520 +528 @@
         float oldIdx = temporalCoherence > 1 ? temporalVals.z : 0;
         
+#else
+
+        const bool isMovingObject = false;
+        const float oldSsao = 0;
+        
+        float oldWeight = 0;
+        float oldIdx = 0;
+        
+#endif
+
         float3 ao;
 
@@ -528 +546 @@
                 {
                         ao = ssao(IN, colors, noiseTex, samples, normal, eyeSpacePos.xyz, 
-                                      scaleFactor, bl, br, tl, tr, normalize(viewDir),
+                                      radiusMult, bl, br, tl, tr, normalize(viewDir),
                                           oldWeight, sampleIntensity, isMovingObject, oldIdx);
                 }
                 else
                 {
-                        ao = ssao2(IN, colors, noiseTex, samples, normal, eyeSpacePos.xyz, scaleFactor, 
+                        ao = ssao2(IN, colors, noiseTex, samples, normal, eyeSpacePos.xyz, radiusMult, 
                                    bl, br, tl, tr, normalize(viewDir), oldWeight, sampleIntensity, 
                                            isMovingObject, normals, oldIdx);
@@ -543 +561 @@
         }
 
-        
+#ifdef PERFORMANCE_TEST
+
         ///////////
         //-- check if we have to reset pixel because one of the sample points was invalid
@@ -592 +611 @@
         //OUT.illum_col.z = SqrLen(diffVec);
 
+#else
+
+        OUT.illum_col.x = ao.x;
+        OUT.illum_col.w = eyeSpaceDepth;
+        
+#endif
+
         return OUT;
 }