Changeset 3304 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/combineSsaoSep.cg

Timestamp:

02/12/09 10:39:53 (15 years ago)

Author:

mattausch

Message:

tried out scaling vs reduction of samples

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/combineSsaoSep.cg (modified) (4 diffs)

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

@@ -63 +63 @@
                            float3 tl,
                            float3 tr,
-                           float2 xyStep)
+                           float2 xyStep,
+                           float convergence)
 {
         float2 result = float2(0.0f, 0.0f);
@@ -69 +70 @@
         const float3 centerPos = ReconstructSamplePos(colorsTex, texCoord, bl, br, tl, tr);
 
-        for (int i = -SSAO_FILTER_RADIUS; i < SSAO_FILTER_RADIUS; ++ i)
+        const float scale = saturate((SSAO_CONVERGENCE_THRESHOLD - convergence) / SSAO_CONVERGENCE_THRESHOLD);
+        //const int radius = SSAO_FILTER_RADIUS * saturate((SSAO_CONVERGENCE_THRESHOLD - convergence) / SSAO_CONVERGENCE_THRESHOLD);
+        
+        //for (int i = -radius; i <= radius; ++ i)
+        for (int i = -SSAO_FILTER_RADIUS; i <= SSAO_FILTER_RADIUS; ++ i)
         {
-                float4 sampleTexCoord = float4(texCoord + i * xyStep, .0f, .0f);
+                float4 sampleTexCoord = float4(texCoord + i * xyStep * scale, .0f, .0f);
                 result += FilterSample(sampleTexCoord, ssaoTex, colorsTex, centerPos, bl, br, tl, tr);
         }
@@ -104 +109 @@
 
         // filter up to a certain convergance value and leave out background (sky) by checking depth
-        if ((convergence < SSAO_CONVERGENCE_THRESHOLD) && (depth < 1e10f))
+        if ((convergence < SSAO_CONVERGENCE_THRESHOLD) && (depth < DEPTH_THRESHOLD))
         {
                 // the filtered ssao value
-                OUT.illum_col.x = FilterXY(IN.texCoord, ssaoTex, colorsTex, bl, br, tl, tr, xyStep);
+                OUT.illum_col.x = FilterXY(IN.texCoord, ssaoTex, colorsTex, bl, br, tl, tr, xyStep, convergence);
         }
 
@@ -140 +145 @@
 
         // filter up to a certain convergance value and leave out background (sky) by checking depth
-        if ((convergence < SSAO_CONVERGENCE_THRESHOLD) && (depth < 1e10f))
+        if ((convergence < SSAO_CONVERGENCE_THRESHOLD) && (depth < DEPTH_THRESHOLD))
         {
                 // the filtered ssao value
-                ao.x = FilterXY(IN.texCoord, ssaoTex, colorsTex, bl, br, tl, tr, xyStep);
+                ao.x = FilterXY(IN.texCoord, ssaoTex, colorsTex, bl, br, tl, tr, xyStep, convergence);
         }
 
         // just apply ssao if we are not in the sky
-        if (depth < 1e10f)
+        if (depth < DEPTH_THRESHOLD)
         {
                 OUT.illum_col.xyz = col.xyz * max(2e-2f, 1.0f - ao.x);