Changeset 3212 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/combineSsao.cg

Timestamp:

12/07/08 23:26:00 (16 years ago)

Author:

mattausch

Message:

made ssao parameters more flexible
started to implement lense flare

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders/combineSsao.cg (modified) (3 diffs)

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

@@ -125 +125 @@
 
                 aoSample = tex2Dlod(ssaoTex, sampleTexCoord);
-                //sampleNorm = tex2Dlod(normalsTex, sampleTexCoord).xyz;
-
+                
                 // check spatial discontinuity
                 // note: using the depth from the color texture is not 100% correct as depth was
@@ -136 +135 @@
                 spatialFactor = 1.0f / max(len, 1e-3f);
 
+                convergenceFactor = aoSample.y + 1.0f;
+
+                //sampleNorm = tex2Dlod(normalsTex, sampleTexCoord).xyz;
                 //normalFactor = max(step(.2f, dot(sampleNorm, centerNormal)), 1e-2f);
-                convergenceFactor = aoSample.y + 1.0f;
-                
+
                 // combine the weights
                 w = convergenceFactor * convergenceFactor * spatialFactor;// * normalFactor;
@@ -232 +233 @@
         return OUT;
 }
-
-
-/** Function combining image and indirect illumination buffer using a 
-        depth and normal aware discontinuity filter.
-*/
-pixel SmoothSsao(fragment IN, 
-                                 uniform sampler2D ssaoTex)
-{
-        pixel OUT;
-
-        float4 ao = tex2Dlod(ssaoTex, float4(IN.texCoord, 0, 0));
-
-        float4 dummy;
-        const float xoffs = .5f / 1024.0f; const float yoffs = .5f / 768.0f;
-
-        // get positions exactly between old texel centers
-        dummy.x = tex2Dlod(ssaoTex, float4(IN.texCoord + float2(xoffs, 0), 0, 0)).y;
-        dummy.y = tex2Dlod(ssaoTex, float4(IN.texCoord + float2(0, -yoffs), 0, 0)).y;
-        dummy.z = tex2Dlod(ssaoTex, float4(IN.texCoord + float2(-xoffs, 0), 0, 0)).y;
-        dummy.w = tex2Dlod(ssaoTex, float4(IN.texCoord + float2(0, yoffs), 0, 0)).y;
-
-        const float m1 = min(dummy.x, dummy.y);
-        const float m2 = min(dummy.z, dummy.w);
-
-        ao.y = min(ao.y, min(m1, m2));
-
-        return OUT;
-}