Changeset 2866 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders

Timestamp:

08/25/08 20:20:42 (16 years ago)

Author:

mattausch

Message:

bug: downsampling of positions does not work

Location:

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

Files:

• antialiasing.cg (modified) (2 diffs)
• deferred.cg (modified) (1 diff)
• mrt.cg (modified) (1 diff)

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

@@ -31 +31 @@
 
         nd -= e_barrier.x;
-        nd = step(0, nd);
+        nd = step(0.0f, nd);
 
         float ne = saturate(dot(nd, e_weights.x));
@@ -64 +64 @@
 
         dd = abs(2.0f * dc - dd) - e_barrier.y;
-        dd = step(dd, 0);
+        dd = step(dd, 0.0f);
+
         float de = saturate(dot(dd, e_weights.y));
 

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

@@ -104 +104 @@
                         (SAMPLE_INTENSITY * DISTANCE_SCALE) / (DISTANCE_SCALE + length_to_sample * length_to_sample);
 
-                // if surface normal perpenticular to view dir, the samples count less => compensate for this
+                // if surface normal perpenticular to view dir, some samples probably count less 
+                // => compensate for this
                 float view_correction = 1.0f + VIEW_CORRECTION_SCALE * (1.0f - dot(currentViewDir, currentNormal));
 

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

@@ -75 +75 @@
         pixel pix;
 
+        // save color in first render target
         pix.col = (ambient + diffuse) * tex2D(tex, IN.texCoord.xy);
+        // save world position in second rt
         pix.pos = IN.worldPos * maxDepth;
+        // save normal in third rt
         pix.norm.xyz = IN.normal * 0.5f + 0.5f;
 
         // hack: squeeze some information about ambient into the texture
         pix.norm.w = ambient.x;
-        // hack: store projection coordinate for scaling ssao
+        // store projection coordinates with positions (used for ssao)
         pix.pos.w = IN.projPos.w;