Changeset 3375 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src

Timestamp:

07/09/09 10:21:25 (15 years ago)

Author:

mattausch

Message:

 

Location:

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

Files:

• DeferredRenderer.cpp (modified) (5 diffs)
• Geometry.cpp (modified) (1 diff)
• shaders/deferred.cg (modified) (7 diffs)
• shaders/ssao.cg (modified) (2 diffs)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/DeferredRenderer.cpp

@@ -537 +537 @@
         string deferredShadowParams[] = 
                 {"colors", "normals", "shadowMap", "noiseTex", "shadowMatrix", 
-                 "sampleWidth", "lightDir", "eyePos", "samples", "weights"};
-        
-        sCgDeferredShadowProgram->AddParameters(deferredShadowParams, 0, 10);
+                 "sampleWidth", "lightDir", "eyePos", "samples", "weights",
+             "aoTex", "useAO"};
+        
+        sCgDeferredShadowProgram->AddParameters(deferredShadowParams, 0, 12);
         
         ////////////////
@@ -630 +631 @@
         //-- pcf tabs for depth of field
 
-        // todo matt: it is stupid to put num samples and width of kernel into constructor => change this!!!
+        // todo matt: bad style to put #samples and width of kernel into constructor => change this!!!
         PoissonDiscSampleGenerator2D poisson3(NUM_DOF_TABS, 1.0f);
         poisson3.Generate((float *)dofSamples);
@@ -639 +640 @@
                 dofSamples[i].y *= 1.0f / mHeight;
         }
-
-        //float dofWeights[NUM_PCF_TABS];
-        //sCgDOFProgram->SetArray1f(2, (float *)dofWeights, NUM_DOF_TABS);
 
         PrintGLerror("init");
@@ -1148 +1146 @@
         GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
         GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
+        GLuint aoTex = mTempFbo->GetColorBuffer(1)->GetTexture();
 
         GLuint shadowTex = shadowMap->GetDepthTexture();
@@ -1167 +1166 @@
         sCgDeferredShadowProgram->SetValue3f(6, lightDir.x, lightDir.y, lightDir.z);
         sCgDeferredShadowProgram->SetValue3f(7, mEyePos.x, mEyePos.y, mEyePos.z);
+
+        sCgDeferredShadowProgram->SetTexture(10, aoTex);
+        sCgDeferredShadowProgram->SetValue1f(11, float(mShadingMethod == SSAO));
 
         DrawQuad(sCgDeferredShadowProgram);

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/Geometry.cpp

@@ -39 +39 @@
 /*
         mIndices = new unsigned int[mNumVertices];
-
-        for (int i = 0; i < mNumVertices; ++ i)
-        {
-                mIndices[i] = i;
-        }*/
+        for (int i = 0; i < mNumVertices; ++ i) { mIndices[i] = i; }
+*/
 
         // prepare vbos

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

@@ -39 +39 @@
         float4 outColor;
 
-#if 0
+#if 1
         // hack: prevent to shade the sky
         if (color.w > DEPTH_THRESHOLD)
@@ -47 +47 @@
         else 
         {
-                if (useAO > .5f)
-                        outColor = (ambient * ao + diffuse) * color;
-                else
-                        outColor = (ambient + diffuse) * color;
+                outColor = (useAO > .5f) ? (ambient * ao + diffuse) * color : (ambient + diffuse) * color;
         }
 #else
+        // just output ambient occlusion
         outColor = ao;
 #endif
@@ -81 +79 @@
         
         OUT.color = col;
+
         // store scaled view vector so wie don't have to normalize for later
-        //OUT.color.w = color.w / length(IN.view);
+        if (0) OUT.color.w = color.w / length(IN.view);
+
         OUT.color.w = color.w;
 
@@ -150 +150 @@
                                   uniform float3 br,
                                   uniform float3 tl,
-                                  uniform float3 tr
+                                  uniform float3 tr,
+                                  uniform sampler2D aoTex,
+                                  uniform float useAO
                                   )
 {
         pixel OUT;
+
+        float4 ao = 1;//(useAO > .5f) ? tex2Dlod(aoTex, float4(IN.texCoord, 0, 0)) : 1.0f;
 
         const float3 normal = tex2D(normals, IN.texCoord.xy);
@@ -192 +196 @@
         const float4 ambient = glstate.light[0].ambient;
         // compute shading
-        OUT.color = useShading ? (ambient + diffuse) * color : color;
+        OUT.color = useShading ? (ambient * ao + diffuse) * color : color * ao;
+        
         // store scaled view vector from now on so wie don't have to normalize later (e.g., for ssao)
-        //OUT.color.w = color.w / lenView;
+        if (0) OUT.color.w = color.w / lenView;
+
         OUT.color.w = color.w;
 
@@ -216 +222 @@
         return color;
 }
-
-
-/** This shader computes the reprojection and checks
-        if the reprojected pixel from last frame is still
-        valid in the current frame
-*/
-/*inline float2 ComputeInfo(sampler2D oldTex,
-                                                  float4 color,
-                                                  float3 difVec,
-                                                  float2 texCoord,
-                                                  float3 viewDir,
-                                                  float3 oldEyePos,
-                                                  float4x4 modelViewProj,
-                                                  float4x4 oldModelViewProj,
-                                                  float3 oldbl,
-                                                  float3 oldbr,
-                                                  float3 oldtl,
-                                                  float3 oldtr,
-                                                  sampler2D myTex
-                                                  )
-{
-        // reconstruct position from the eye space depth
-        const float eyeSpaceDepth = color.w;
-        const float4 worldPos = float4(-viewDir * eyeSpaceDepth, 1.0f);
-
-        // compute position from old frame for dynamic objects + translational portion
-        const float3 translatedPos = -oldEyePos + worldPos.xyz + difVec;
-
-
-        /////////////////
-        //-- reproject into old frame and calculate texture position of sample in old frame
-
-        // note: the old model view matrix only holds the view orientation part
-        float4 backProjPos = mul(oldModelViewProj, float4(translatedPos, 1.0f));
-        backProjPos /= backProjPos.w;
-        
-        // fit from unit cube into 0 .. 1
-        const float2 oldTexCoords = backProjPos.xy * .5f + .5f;
-        
-        // retrieve the sample from the last frame
-        const float4 oldPixel = tex2Dlod(oldTex, float4(oldTexCoords, .0f, .0f));
-        const float oldDiff = tex2Dlod(myTex, float4(oldTexCoords, .0f, .0f)).x;
-
-        // calculate eye space position of sample in old frame
-        const float oldEyeSpaceDepth = oldPixel.w;
-
-        // vector from eye pos to old sample 
-        const float3 oldViewDir = Interpol(oldTexCoords, oldbl, oldbr, oldtl, oldtr);
-        const float invLen = 1.0f / length(oldViewDir);
-        
-
-        // check if the pixel was outside of the frame buffer
-        if ((oldTexCoords.x <= .0f) || (oldTexCoords.x >= 1.0f) || 
-                (oldTexCoords.y <= .0f) || (oldTexCoords.y >= 1.0f)
-                )
-        {
-                isPixelValid = pixelIsNotValid;
-        }
-        else if (// check if changed from dynamic to not dynamic object
-                 (
-                         // (oldDynamic && !newDynamic) || (!oldDynamic && newDynamic) ||
-                         (
-                          (oldEyeSpaceDepth < DEPTH_THRESHOLD) && (projectedEyeSpaceDepth < DEPTH_THRESHOLD) &&
-                          //(oldDynamic || newDynamic) &&  // check if we have a dynamic object 
-                          (depthDif > 5e-2f)))//MIN_DEPTH_DIFF)))
-                          ) // and there is a depth discontinuity
-        {       
-                isPixelValid = pixelCouldBeValid;
-        }
-        else 
-        {
-                isPixelValid = pixelIsValid;
-        }
-        
-        //isPixelValid = depthDif;
-
-        return float3(isPixelValid, abs(oldEyeSpaceDepth - projectedEyeSpaceDepth));
-}
-*/
 
 
@@ -365 +292 @@
         const float3 normal = normalize(tex2Dlod(normalsTex, float4(IN.texCoord, 0, 0)).xyz);
 
-        // do reprojection and filter out the pixels that are not save
-/*      const float2 pValid = PixelValid(oldTex,
-                                             color, 
-                                                                         difVec.xyz,
-                                                                         IN.texCoord,
-                                                                         IN.view,
-                                                                         oldEyePos,
-                                                                         modelViewProj,                                                   
-                                                                         oldModelViewProj,
-                                                                         oldbl, oldbr, oldtl, oldtr,
-                                                                         myTex
-                                                                         );
-
-        pix.color = color;
-        pix.color.xy = pValid.xy;
-        pix.color.z = color.w;
-*/
         const float3 translatedPos = 
                 ComputeTranslatedPos(color, difVec.xyz, IN.view, oldEyePos, oldModelViewProj);

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

@@ -547 +547 @@
                                 pixelValid = 100.0f;
                         }
-                        else if ((cosAngle >= 0) && (distanceDiff > 1e-3f))
+                        else if (/*(cosAngle >= 0) && */(distanceDiff > 1e-3f))
                         {
                                 pixelValid = 5.0f;
+                                //pixelValid = 100.0f;
                         }
                 }
@@ -732 +733 @@
         if (ao.y > partlyResetThres)
         {
-                const float factor = 2.0f;
+                const float factor = 3.0f;
 
                 oldWeight = min(oldWeight, factor * NUM_SAMPLES);