Changeset 3204 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/combineSsao.cg

Timestamp:

12/02/08 17:06:08 (16 years ago)

Author:

mattausch

Message:

debug version showing a visualization of the confidence

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/combineSsao.cg (modified) (6 diffs)

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

@@ -125 +125 @@
 
                 aoSample = tex2Dlod(ssaoTex, sampleTexCoord);
-                sampleNorm = tex2Dlod(normalsTex, sampleTexCoord).xyz;
+                //sampleNorm = tex2Dlod(normalsTex, sampleTexCoord).xyz;
 
                 // check spatial discontinuity
-
                 // note: using the depth from the color texture is not 100% correct as depth was
                 // not scaled with the interpolated view vector depth yet ...
@@ -137 +136 @@
                 spatialFactor = 1.0f / max(len, 1e-3f);
 
-                //normalFactor = max(step(.0f, dot(sampleNorm, centerNormal)), 1e-2f);
+                //normalFactor = max(step(.2f, dot(sampleNorm, centerNormal)), 1e-2f);
                 convergenceFactor = aoSample.y + 1.0f;
                 
@@ -172 +171 @@
 
         float4 col = tex2Dlod(colorsTex, float4(IN.texCoord, 0, 0));
-        float4 ao = tex2Dlod(ssaoTex, float4(IN.texCoord, 0, 0));
+        float4 ao =  tex2Dlod(ssaoTex, float4(IN.texCoord, 0, 0));
 
         // get the minimum convergence by exactly sampling the 4 surrounding
@@ -178 +177 @@
         // will be interpolated when upsampling and filter size does not match!
         float4 texelCenterConv;
-        const float w = 512.0f; const float h = 384.0f;
+        //const float w = 512.0f; const float h = 384.0f;
+        //const float w = 128.0f; const float h = 96.0f;
+        const float w = 16.0f; const float h = 12.0f;
         const float xoffs = .5f / w; const float yoffs = .5f / h;
 
         // get position exactly between old texel centers
         float2 center;
-        center.x = float(floor(IN.texCoord.x * w - .5f) + 1.0f) / w;
-        center.y = float(floor(IN.texCoord.y * h - .5f) + 1.0f) / h;
-
-        texelCenterConv.x = tex2Dlod(ssaoTex, float4(center + float2(xoffs, yoffs), 0, 0)).y;
-        texelCenterConv.y = tex2Dlod(ssaoTex, float4(center + float2(xoffs, -yoffs), 0, 0)).y;
-        texelCenterConv.z = tex2Dlod(ssaoTex, float4(center + float2(-xoffs, yoffs), 0, 0)).y;
-        texelCenterConv.w = tex2Dlod(ssaoTex, float4(center + float2(-xoffs, -yoffs), 0, 0)).y;
+        center.x = (floor(IN.texCoord.x * w - .5f) + 1.0f) / w;
+        center.y = (floor(IN.texCoord.y * h - .5f) + 1.0f) / h;
+//center=IN.texCoord;
+        texelCenterConv.x = tex2Dlod(ssaoTex, float4(center + float2( xoffs,  yoffs), 0, 0)).y;
+        texelCenterConv.y = tex2Dlod(ssaoTex, float4(center + float2( xoffs, -yoffs), 0, 0)).y;
+        texelCenterConv.z = tex2Dlod(ssaoTex, float4(center + float2(-xoffs, -yoffs), 0, 0)).y;
+        texelCenterConv.w = tex2Dlod(ssaoTex, float4(center + float2(-xoffs,  yoffs), 0, 0)).y;
 
         const float m1 = min(texelCenterConv.x, texelCenterConv.y);
@@ -196 +197 @@
         const float minConvergence = min(m1, m2);
 
-        const float convergence = step(200.0f, minConvergence) * minConvergence;
+        const float convergence = minConvergence;
+        //const float convergence = 0;
         //const float convergence = ao.y;
 
-        // filter reaches size 1 after thres samples
+        // filter reaches size 1 pixel after thres samples: 
+        // afterwards we do not use the filter anymore
         const float thres = 500.0f; 
 
@@ -222 +225 @@
 
         //OUT.illum_col.xyz = float3(ao.x, ao.x, step(thres, convergence));
-        //OUT.illum_col.xyz = float3(ao.x, ao.x, ao.x);
+        OUT.illum_col.xyz = float3(0, convergence, 0);
+        //OUT.illum_col.xyz = float3(abs(center.x - IN.texCoord.x) * 16.0f, abs(center.y - IN.texCoord.y) * 12.0f, 0);
+        
         //OUT.illum_col.xyz = float3(0, clamp(1.0f - ao.y * 1e-3f, 0, 1), 1);
         //OUT.illum_col.xyz = float3(0, 1.0f - step(0.5f + NUM_SAMPLES, convergence), 1);