Changeset 3142

Timestamp:

11/18/08 23:35:16 (16 years ago)

Author:

mattausch

Message:

changed filter, halo region very small

Location:

GTP/trunk/App/Demos/Vis/FriendlyCulling/src

Files:

• DeferredRenderer.cpp (modified) (3 diffs)
• shaderenv.h (modified) (2 diffs)
• shaders/combineSsao.cg (modified) (6 diffs)
• shaders/ssao.cg (modified) (2 diffs)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/DeferredRenderer.cpp

@@ -292 +292 @@
         //-- the flip-flop fbos
 
-        //const int dsw = w / 2; const int dsh = h / 2;
-        const int dsw = w; const int dsh = h;
+        const int dsw = w / 2; const int dsh = h / 2;
+        //const int dsw = w; const int dsh = h;
 
         mIllumFbo = new FrameBufferObject(dsw, dsh, FrameBufferObject::DEPTH_NONE);
@@ -545 +545 @@
         }
 
+        // as multisampling is difficult / costly with deferred shading, 
+        // at least do some antialiasing
         AntiAliasing(fbo, light);
 
-        Output(fbo);
+        // just output the latest buffer
+        //Output(fbo);
 
         glEnable(GL_LIGHTING);
@@ -668 +671 @@
         GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
 
-        //FrameBufferObject::Release();
-
+        FrameBufferObject::Release();
         // read the second buffer, write to the first buffer
-        FlipFbos(fbo);
+        //FlipFbos(fbo);
 
         // the neighbouring texels

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaderenv.h

@@ -7 +7 @@
 
 #define NUM_SAMPLES 8
-//#define NUM_SAMPLES 16
+//#define NUM_SAMPLES 8
 
 // for quadratic falloff
@@ -29 +29 @@
 //-- reprojection
 
-//#define MIN_DEPTH_DIFF 2e-2f
 #define MIN_DEPTH_DIFF 5e-3f
 #define PRECISION_SCALE 1e-1f

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

@@ -84 +84 @@
         const float3 centerPos = ReconstructSamplePos(ssaoTex, texCoord, bl, br, tl, tr);
 #else
-        //const float eyeSpaceDepth = color.w;
-        const float eyeSpaceDepth = ao.w;
+        const float eyeSpaceDepth = color.w;
+        //const float eyeSpaceDepth = ao.w;
 #endif
 
@@ -114 +114 @@
                 depthFactor = max(step(1.0f - 5e-1f, 1.0f - length(samplePos - centerPos)), 1e-3f);
 #else // use depth
-                //sampleDepth = tex2Dlod(colorsTex, sampleTexCoord).w;
-                sampleDepth = aoSample.w;
-                depthFactor = max(step(5e-1f, 1.0f - abs(1.0f - eyeSpaceDepth / sampleDepth)), 1e-3f);
+                sampleDepth = tex2Dlod(colorsTex, sampleTexCoord).w;
+                //sampleDepth = aoSample.w;
+                //depthFactor = max(step(1e-1f, 1.0f - abs(1.0f - eyeSpaceDepth / sampleDepth)), 1e-3f);
+                depthFactor = max(1.0f - abs(1.0f - eyeSpaceDepth / sampleDepth), 1e-3f);
 #endif
-                normalFactor = max(step(0.6f, dot(sampleNorm, centerNormal)), 1e-3f);
-                convergenceFactor = min(100.0f, aoSample.y) * 0.01f;//max(step(18.5f, aoSample.y), 1e-3f);
-
-                w = filterWeights[i] * normalFactor * depthFactor * convergenceFactor;
+                //normalFactor = max(step(0.9f, dot(sampleNorm, centerNormal)), 1e-3f);
+                normalFactor = max(dot(sampleNorm, centerNormal), 1e-3f);
+                convergenceFactor = min(1000.0f, aoSample.y) * 0.01f;//max(step(18.5f, aoSample.y), 1e-3f);
+
+                //w = filterWeights[i] * normalFactor * depthFactor * convergenceFactor;
+                w = normalFactor * depthFactor * convergenceFactor;
                 //w = filterWeights[i] * normalFactor * converganceFactor;
                 //w = filterWeights[i] * normalFactor * depthFactor;
+                //w = convergenceFactor;
 
                 average += aoSample.x * w;
@@ -129 +133 @@
         }
 
-        average *= 1.0f / max(total_w, 1e-6f);
-
-        return average;
+        average *= 1.0f / max(total_w, 1e-1f);
+
+        return saturate(average);
 }
 
@@ -195 +199 @@
                                                   uniform float2 filterOffs[NUM_SSAO_FILTERSAMPLES],
                                                   uniform float filterWeights[NUM_SSAO_FILTERSAMPLES],
-                                                  float scale,
-                                                  int index)
+                                                  float scale
+                                                  )
 {
         float average = .0f;
@@ -219 +223 @@
 
                 //depthFactor = clamp(1.0f - abs(1.0f - eyeSpaceDepth / aoSample.w), 1e-3f, 1.0f);
-                depthFactor = max(step(5e-1f, 1.0f - abs(1.0f - eyeSpaceDepth / aoSample.w)), 1e-3f);
+                //depthFactor = max(step(5e-1f, 1.0f - abs(1.0f - eyeSpaceDepth / aoSample.w)), 1e-3f);
                 //normalFactor = max(step(0.6f, dot(sampleNorm, norm)), 1e-3f);
-
+                w = filterWeights[i];
                 //w = filterWeights[i] * normalFactor * depthFactor;
                 //w = normalFactor * depthFactor;
-                w = depthFactor;
+                //w = depthFactor;
 
                 average += aoSample.y * w;
@@ -245 +249 @@
 
         float4 ao = tex2Dlod(ssaoTex, float4(IN.texCoord, 0, 0));
-
-        //const static float scaleFactor = 20.0f;
-        const static float scaleFactor = 10.0f;
-        //ao.y = DiscontinuityFilter2(IN.texCoord, ao, ssaoTex, normalsTex, filterOffs, filterWeights, 0.5f, 1);
-        //ao.y = DiscontinuityFilter2(IN.texCoord, ao, ssaoTex, normalsTex, filterOffs, filterWeights, scaleFactor, 1);
+        //ao.y = DiscontinuityFilter2(IN.texCoord, ao, ssaoTex, normalsTex, filterOffs, filterWeights, 0.1f);
         
         OUT.illum_col = ao;

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

@@ -185 +185 @@
         float overallDepth = 0;
 
+#if 1
         const float squaredLen = diffVec.x * diffVec.x + diffVec.y * diffVec.y + diffVec.z * diffVec.z;
 
-#if 1
         if (squaredLen < 1e-8f) // object not dynamic
         {
@@ -226 +226 @@
                 // increase the weight for convergence
                 newWeight = oldWeight + 1.0f;
-                if (notValid > 1.0f) newWeight = 10.0f;
+                if (notValid > 1.0f) newWeight = 4.0f;
                 //if (notValid > 1.0f) newWeight = max(15.0f - notValid * 2.0f, 1.0f);
         }