Changeset 2988 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaders

Timestamp:

10/02/08 10:05:06 (16 years ago)

Author:

mattausch

Message:

eye linear depth not working

Location:

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

Files:

• deferred.cg (modified) (1 diff)
• mrt.cg (modified) (2 diffs)
• ssao.cg (modified) (6 diffs)

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

@@ -83 +83 @@
         OUT.color = col;
 
-        OUT.color.xyz = color.w / 1e3f;
+        OUT.color.xyz = color.w;
         
 #if 1

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

@@ -95 +95 @@
         // hack: squeeze some information about ambient into the texture
         //pix.col.w = glstate.material.emission.x;
-        pix.col.w = length(currentPos - IN.worldPos);
+        pix.col.w = length((currentPos - IN.worldPos) * maxDepth);
 
         return pix;
@@ -118 +118 @@
         // hack: squeeze some information about the ambient term into the target
         //pix.col.w = glstate.material.emission.x;
-        pix.col.w = length(currentPos - IN.worldPos);
+        pix.col.w = length((currentPos - IN.worldPos) * maxDepth);
 
         return pix;

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

@@ -55 +55 @@
 }
 
+
 float3 Interpol(float2 w, float3 bl, float3 br, float3 tl, float3 tr)
 {
         //float3 x1 = lerp(oldColor.w, logLumScaled, 0.1f);
-        float3 x1 = bl * (1.0f - w.x) + br * w.x;
-        float3 x2 = tl * (1.0f - w.x) + tr * w.x;
-
-        float3 v = x1 * (1.0f - w.y) + x2 * w.y;
+        float3 x1 = lerp(bl, tl, w.y); //bl * (1.0f - w.x) + br * w.x;
+        float3 x2 = lerp(br, tr, w.y); //tl * (1.0f - w.x) + tr * w.x;
+
+        float3 v = lerp(x1, x2, w.x); //x1 * (1.0f - w.y) + x2 * w.y;
 
         return v;
 }
+
+
+float2 Interpol2(float2 w, float2 bl, float2 br, float2 tl, float2 tr)
+{
+        //float3 x1 = lerp(oldColor.w, logLumScaled, 0.1f);
+        float2 x1 = lerp(bl, tl, w.y); //bl * (1.0f - w.x) + br * w.x;
+        float2 x2 = lerp(br, tr, w.y); //tl * (1.0f - w.x) + tr * w.x;
+
+        float2 v = lerp(x1, x2, w.x); //x1 * (1.0f - w.y) + x2 * w.y;
+
+        return v;
+}
+
 
 /** The ssao shader returning the an intensity value between 0 and 1
@@ -81 +95 @@
                    uniform float3 br,
                    uniform float3 tl,
-                   uniform float3 tr,
-                   uniform float maxDepth
+                   uniform float3 tr
                    )
 {
@@ -92 +105 @@
         float numSamples = 0;
 
-        const float y_angle = 0.43633231299858239423092269212215;
-        const float x_angle = 0.58177641733144319230789692282954;
 
         for (int i = 0; i < NUM_SAMPLES; ++ i) 
@@ -117 +128 @@
                 float eyeSpaceDepth = tex2Dlod(colors, float4(texcoord, 0, SSAO_MIPMAP_LEVEL)).w;
 
-                float newOffs = 0.5f + offsetTransformed * 0.5f;
+                float2 newOffs = 0.5f + offsetTransformed * 0.5f;
 
                 float3 rotView = normalize(Interpol(newOffs, bl, br, tl, tr));
-                float3 sample_position = (eyePos - rotView * eyeSpaceDepth) / maxDepth;
+                float3 sample_position = eyePos - rotView * eyeSpaceDepth;
                 //float3 sample_position = tex2Dlod(positions, float4(texcoord, 0, SSAO_MIPMAP_LEVEL)).xyz;
 
@@ -180 +191 @@
         // the current world position
         const float4 centerPosition = tex2D(positions, IN.texCoord.xy);
-        // the current color
+
+        const float eyeDepth = tex2D(colors, IN.texCoord.xy).w;
+        float3 view2 = normalize(Interpol(IN.texCoord.xy, bl, br, tl, tr));
+        
+        float4 centerPosition2;
+        centerPosition2.xyz = eyePos - view2 * eyeDepth;
+        // the current depth
         const float currentDepth = centerPosition.w;
 
@@ -186 +203 @@
         float3 viewDir = normalize(IN.view);
 
-/*      const float eyeSpaceDepth = tex2D(colors, IN.texCoord.xy).w;
-
-        float3 sample_position = eyePos - viewDir * eyeSpaceDepth; 
-
-        OUT.illum_col.xyz = centerPosition.xyz * maxDepth -  sample_position;
-        OUT.illum_col.w = currentDepth;
-        return OUT;
-*/
         //const float2 ao = ssao(IN, positions, noiseTexture, samples, normal, centerPosition, w, viewDir, eyePos);
-        const float2 ao = ssao(IN, colors, noiseTexture, samples, normal, centerPosition, w, viewDir, eyePos, positions,
-                bl, br, tl, tr, maxDepth);
+        const float2 ao = ssao(IN, colors, noiseTexture, samples, normal, centerPosition2, w, viewDir, eyePos, positions,
+                bl, br, tl, tr);