Changeset 3247

Timestamp:

01/05/09 16:48:21 (15 years ago)

Author:

mattausch

Message:

worked on obj loader
played around with ssao sampling

Location:

GTP/trunk/App/Demos/Vis/FriendlyCulling

Files:

• Converter/ObjConverter.cpp (modified) (9 diffs)
• Converter/ObjConverter.h (modified) (5 diffs)
• Converter/main.cpp (modified) (2 diffs)
• default.env (modified) (5 diffs)
• src/DeferredRenderer.cpp (modified) (3 diffs)
• src/SampleGenerator.cpp (modified) (2 diffs)
• src/SampleGenerator.h (modified) (1 diff)
• src/chcdemo.cpp (modified) (13 diffs)
• src/shaderenv.h (modified) (1 diff)
• src/shaders/combineSsao.cg (modified) (1 diff)
• src/shaders/ssao.cg (modified) (1 diff)

GTP/trunk/App/Demos/Vis/FriendlyCulling/Converter/ObjConverter.cpp

@@ -154 +154 @@
 void ObjConverter::LoadShape(const VertexArray &faceVertices,
                                                          const VertexArray &faceNormals,
-                                                         const vector<Texcoord> &faceTexcoords)
+                                                         const vector<Texcoord> &faceTexcoords,
+                                                         Material *mat)
 {
         int numElements = (int)faceVertices.size();
@@ -167 +168 @@
         geom->mTexcoordCount = (int)faceTexcoords.size();
 
-        cout << "number of vertices=" << numElements << endl;
+        geom->mMaterial = mat;
+
+        cout << "new geometry #vts=" << numElements << endl;
 
         for (int i = 0; i < numElements; ++ i)
@@ -244 +247 @@
         }
         
+        Material *currentMat = NULL;
         VertexArray faceVertices; 
         VertexArray faceNormals;
@@ -279 +283 @@
                                         sscanf(str + 1, "%f %f %f", &x, &y, &z);
                                         //const float scale = 5e-3f;
-                                        const float scale = 1.0f;
+                                        const float scale = 5.0f;
                                         vertices.push_back(SimpleVec(x * scale, y * scale, z* scale));
                                         //cout <<"v " << x << " " << y << " "<< z << " ";
@@ -294 +298 @@
                                                 faceVertices, faceNormals, faceTexcoords);
 
-                                if (0 &&
-                                        (((line % 1000) == 999) && !faceVertices.empty()))
+                                break;
+                        }   // end face
+                case 'g': // load a new shape
+                        {
+                                if (!faceVertices.empty())
                                 {
                                         ++ mNumShapes;
 
-                                        LoadShape(faceVertices, faceNormals, faceTexcoords);
+                                        LoadShape(faceVertices, faceNormals, faceTexcoords, currentMat);
 
                                         faceVertices.clear();
                                         faceNormals.clear();
                                         faceTexcoords.clear();
+
+                                        currentMat = NULL;
                                 }
-
-                                break;
-                        }   // end face
-                case 'g': // load a new shape
-                        {/*
-                                if (!faceVertices.empty())
-                                {
-                                        ++ mNumShapes;
-
-                                        LoadShape(faceVertices, faceNormals, faceTexcoords);
-
-                                        faceVertices.clear();
-                                        faceNormals.clear();
-                                        faceTexcoords.clear();
-                                }*/
-                        }
+                        }
+                        break;
+                case 'u': // usemtl => material
+                        {
+                                string matName(str + 7);
+                                // throw away linebreak character
+                                matName.resize(matName.size() - 1);
+
+                                currentMat = mMaterialTable[matName];
+                                cout << "matname: " << matName << endl;
+                        }
+
                         break;
                 default:
@@ -334 +339 @@
                 ++ mNumShapes;
 
-                LoadShape(faceVertices, faceNormals, faceTexcoords);
+                LoadShape(faceVertices, faceNormals, faceTexcoords, currentMat);
 
                 faceVertices.clear();
@@ -364 +369 @@
         ///////
         //-- texture
-
+/*
 #ifdef USE_TEXTURE
         int texId = 0;
@@ -401 +406 @@
                 str.write(reinterpret_cast<char *>(&emm), sizeof(SimpleVec));
         }
-}
-
-
+*/
+}
+
+#if 0
 bool ObjConverter::WriteFile(const string &filename)
 {
@@ -481 +487 @@
         return true;
 }
+#else
+bool ObjConverter::WriteFile(const string &filename)
+{
+        ogzstream ofile(filename.c_str());
+
+        if (!ofile.is_open())
+                return false;
+        
+
+        /////////
+        //-- write textures
+
+        int textureCount = (int)mTextures.size();
+
+        ofile.write(reinterpret_cast<char *>(&textureCount), sizeof(int));
+
+        TextureArray::const_iterator tit, tit_end = mTextures.end();
+        
+        for (tit = mTextures.begin(); tit != tit_end; ++ tit)
+        {
+                const string texName = (*tit);
+
+                int texnameSize = (int)texName.length() + 1;
+                ofile.write(reinterpret_cast<char *>(&texnameSize), sizeof(int));
+
+                ofile.write(texName.c_str(), sizeof(char) * texnameSize);
+
+                int boundS = 1, boundT = 1;
+
+                ofile.write(reinterpret_cast<char *>(&boundS), sizeof(int));
+                ofile.write(reinterpret_cast<char *>(&boundT), sizeof(int));
+        }
+
+
+        ///////////
+        //-- write shapes
+
+        ofile.write(reinterpret_cast<char *>(&mNumShapes), sizeof(int));
+
+        vector<Geometry *>::const_iterator it, it_end = mGeometry.end();
+
+        for (it = mGeometry.begin(); it != it_end; ++ it)
+        {
+                WriteGeometry(ofile, *it);
+
+                
+                /////////
+                //-- material
+
+                Material *mat = (*it)->mMaterial;
+
+                ofile.write(reinterpret_cast<char *>(&mat->texture), sizeof(int));
+
+                bool alphaTestEnabled = false;
+                //bool cullFaceEnabled = false;
+                bool cullFaceEnabled = true;
+                
+                ofile.write(reinterpret_cast<char *>(&alphaTestEnabled), sizeof(bool));
+                ofile.write(reinterpret_cast<char *>(&cullFaceEnabled), sizeof(bool));
+
+                // material
+                bool hasMaterial = true;
+                ofile.write(reinterpret_cast<char *>(&hasMaterial), sizeof(bool));
+        
+                SimpleVec ambient, diffuse, spec, emm;
+
+                ambient.x = ambient.y = ambient.z = 0.2f;
+                //diffuse.x = diffuse.y = diffuse.z = 1.0f;
+                diffuse.x = mat->rgb[0]; diffuse.y =mat->rgb[1]; diffuse.z = mat->rgb[2];
+                spec.x = spec.y = spec.z = .0f;
+                emm = spec;
+
+                // only write rgb part of the material
+                ofile.write(reinterpret_cast<char *>(&ambient), sizeof(SimpleVec));
+                ofile.write(reinterpret_cast<char *>(&diffuse), sizeof(SimpleVec));
+                ofile.write(reinterpret_cast<char *>(&spec), sizeof(SimpleVec));
+                ofile.write(reinterpret_cast<char *>(&emm), sizeof(SimpleVec));
+        }
+
+
+        int entityCount = 1;
+        ofile.write(reinterpret_cast<char *>(&entityCount), sizeof(int));
+
+
+        //////////
+        //-- write single scene entity
+
+        // no transformation
+        bool hasTrafo = false;
+        ofile.write(reinterpret_cast<char *>(&hasTrafo), sizeof(bool));
+
+        // a dummy lod
+        int numLODs = 1;
+        ofile.write(reinterpret_cast<char *>(&numLODs), sizeof(int));
+
+        float dist = 0;
+        ofile.write(reinterpret_cast<char *>(&dist), sizeof(float));
+
+        ofile.write(reinterpret_cast<char *>(&mNumShapes), sizeof(int));
+
+        // all shapes belong to this scene entity
+        for (int i = 0; i < mNumShapes; ++ i)
+        {
+                int shapeId = i;
+                ofile.write(reinterpret_cast<char *>(&shapeId), sizeof(int));
+        }
+
+        return true;
+}
+#endif
+
+
+bool ObjConverter::LoadMaterials(const std::string &matFileName)
+{
+        FILE *file;
+
+        if ((file = fopen(matFileName.c_str(), "r")) == NULL)
+        {       
+                return false;
+        }
+        
+        int line = 0;
+        const int len = 10000;
+        char str[len];
+
+        Material *currentMat = NULL;
+
+
+        while (fgets(str, len, file) != NULL)
+        {
+                //sscanf(str + 1, "%f %f %f", &x, &y, &z);
+                vector<string> strings;
+
+                char *next_token;
+
+                // extract the triples of the form v/t/n v/t/n ...
+                char *pch = strtok_s(str, " \n", &next_token);
+
+                while (pch)
+                {
+                        string s(pch);
+                        //s += "\n",
+                        strings.push_back(s);
+
+                        pch = strtok_s(NULL, " \n", &next_token);        
+                }
+
+                cout << endl;
+
+                
+                if ((strings.size() == 2) && (strcmp(strings[0].c_str(),"newmtl") == 0))
+                {
+                        currentMat = new Material();
+                        mMaterialTable[strings[1].c_str()] = currentMat;
+                }
+
+                if ((strings.size() == 2) && (strcmp(strings[0].c_str(),"map_Kd") == 0))
+                {
+                        TextureTable::const_iterator it = mTextureTable.find(strings[1]);
+
+                        int id;
+
+                        if (it == mTextureTable.end()) // parameter not found
+                        {
+                                mTextures.push_back(strings[1]);
+                                id = (int)mTextures.size();
+                                mTextureTable[strings[1]] = id;
+                        }
+                        else
+                        {
+                                id = (*it).second;
+                        }
+
+                        currentMat->texture = id;
+                }
+
+                if ((strings.size() == 4) && (strcmp(strings[0].c_str(),"Kd") == 0))
+                {
+                        currentMat->rgb[0] = (float)atof(strings[1].c_str());
+                        currentMat->rgb[1] = (float)atof(strings[2].c_str());
+                        currentMat->rgb[2] = (float)atof(strings[3].c_str());
+                }
+
+                ++ line;
+        }
+
+        return true;
+}

GTP/trunk/App/Demos/Vis/FriendlyCulling/Converter/ObjConverter.h

@@ -5 +5 @@
 #include <string>
 #include <vector>
+#include <map>
 
-/*struct SimpleVec
+
+struct Material
 {
-        SimpleVec() {}
-        SimpleVec(float _x, float _y, float _z): x(_x), y(_y), z(_z) {}
+        float rgb[3];
+        int texture;
+};
 
-        float x, y, z;
-};*/
+class Geometry;
 
 typedef std::vector<SimpleVec> VertexArray;
 typedef std::pair<float, float> Texcoord;
+typedef std::map<std::string, Material *> MaterialTable;
+typedef std::map<std::string, int> TextureTable;
+
+typedef std::vector<std::string> TextureArray;
 
 class ogzstream;
@@ -29 +35 @@
         bool Convert(const std::string &inputFilename, 
                          const std::string &outputFilename);
-        // const std::string textureFilename) const;
+                     // const std::string textureFilename) const;
+
+        bool LoadMaterials(const std::string &matFileName);
 
         ~ObjConverter();
@@ -40 +48 @@
                 SimpleVec *mNormals;
                 Texcoord *mTexcoords;
+                Material *mMaterial;
 
                 int mVertexCount;
@@ -45 +54 @@
         };
 
+typedef std::vector<Geometry *> GeometryArray;
+
         void LoadShape(const VertexArray &faceVertices,
                            const VertexArray &faceNormals,
-                                   const std::vector<Texcoord> &faceTexcoords);
+                                   const std::vector<Texcoord> &faceTexcoords, 
+                                   Material *mat);
 
         void WriteGeometry(ogzstream &str, Geometry *geom);
@@ -55 +67 @@
 
 
-        std::vector<Geometry *> mGeometry;
+        MaterialTable mMaterialTable;
+        TextureTable mTextureTable;
+        
+        TextureArray mTextures;
+        GeometryArray mGeometry;
 
         int mNumShapes;

GTP/trunk/App/Demos/Vis/FriendlyCulling/Converter/main.cpp

@@ -14 +14 @@
 
         cout << "converting obj to dem format" << endl;
+        
+        if (!converter.LoadMaterials(model_path + argv[3]))
+        {
+                cerr << "loading materials failed" << endl;
+
+                std::cin.get();
+                exit(0);
+        }
 
         if (!converter.Convert(model_path + argv[1], model_path + argv[2]))
@@ -22 +30 @@
                 exit(0);
         }
-        //std::cin.get();
+
         cout << "conversion successful" << endl;
+        cout << "press any key" << std::cin.get();
 
         return 0;

GTP/trunk/App/Demos/Vis/FriendlyCulling/default.env

@@ -8 +8 @@
 
 #filename=vienna_full_hp
+filename=city
 useLODs=1
 # shadow map size
@@ -23 +24 @@
 visibilitySolution=vienna_full-8x3-pgv
 
+useSkylightForIllum=0
 
 
@@ -42 +44 @@
 #keyForwardMotion=5.0f
 #keyRotation=0.5f
-#keyForwardMotion=20.0f
+keyForwardMotion=20.0f
 keyRotation=1.5f
 
@@ -59 +61 @@
 ## powerplant options
 
-filename=PowerPlantM
+#filename=PowerPlantM
 
-keyForwardMotion=200.0f
-mouseMotion=1.0f;
-visibilitySolution=power-plant-2c-xx-1000b-pgv2
-camPosition=-1320.57 -6306.34 3603
-camDirection=0.292156 0.9556 0.0383878
+#keyForwardMotion=200.0f
+#mouseMotion=1.0f;
+#visibilitySolution=power-plant-2c-xx-1000b-pgv2
+#camPosition=-1320.57 -6306.34 3603
+#camDirection=0.292156 0.9556 0.0383878
 
 
@@ -109 +111 @@
 
 # use full resolution ssao (vs. half resoltion)
-ssaoUseFullResolution=0
+ssaoUseFullResolution=1
 # ssao kernel radius
 #ssaoKernelRadius=8e-1f

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

@@ -1426 +1426 @@
 {
         mSampleIntensity = sampleIntensity;
+        mRegenerateSamples = true;
 }
 
@@ -1432 +1433 @@
 {
         mKernelRadius = kernelRadius;
+        mRegenerateSamples = true;
 }
 
@@ -1438 +1440 @@
 {
         mSsaoFilterRadius = ssaoFilterRadius;
+        mRegenerateSamples = true;
 }
 

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

@@ -172 +172 @@
 
 QuadraticDiscSampleGenerator2D::QuadraticDiscSampleGenerator2D(int numSamples, float radius):
-PoissonDiscSampleGenerator2D(numSamples, radius)
+//PoissonDiscSampleGenerator2D(numSamples, radius)
+RandomSampleGenerator2D(numSamples, radius)
 {}
 
@@ -193 +194 @@
 #else
 
-        PoissonDiscSampleGenerator2D::Generate(samples);
+        //PoissonDiscSampleGenerator2D::Generate(samples);
+        RandomSampleGenerator2D::Generate(samples);
 
         Sample2 *s = (Sample2 *)samples;

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/SampleGenerator.h

@@ -78 +78 @@
         with the distance
 */
-class QuadraticDiscSampleGenerator2D: public PoissonDiscSampleGenerator2D
+//class QuadraticDiscSampleGenerator2D: public PoissonDiscSampleGenerator2D
+class QuadraticDiscSampleGenerator2D: public RandomSampleGenerator2D
 {
 public:

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

@@ -142 +142 @@
 ViewCell *viewCell = NULL;
 
+bool useSkylightForIllum = true;
+
 static int globalVisibleId = 0;
 
@@ -456 +458 @@
                 env.GetBoolParam(string("usePvs"), usePvs);
 
+                env.GetBoolParam(string("useSkylightForIllum"), useSkylightForIllum);
+
                 //env.GetStringParam(string("modelPath"), model_path);
                 //env.GetIntParam(string("numSssaoSamples"), numSsaoSamples);
@@ -488 +492 @@
                 cout << "use PVS: " << usePvs << endl;
                 cout << "visibilitySolution: " << visibilitySolution << endl;
-                
+                cout << "useSkylightForIllum" << useSkylightForIllum << endl;
 
                 //cout << "model path: " << model_path << endl;
@@ -571 +575 @@
 
         //LoadModel("fisch.dem", dynamicObjects);
-        //LoadModel("hbuddha.dem", dynamicObjects);
 
         //LoadModel("venusm.dem", dynamicObjects);
@@ -577 +580 @@
         //LoadModel("toyplane2.dem", dynamicObjects);
         //LoadModel("elephal.dem", dynamicObjects);
-
+        LoadModel("sibenik.dem", dynamicObjects);
+
+#if 1
+        LoadModel("hbuddha.dem", dynamicObjects);
+
+        buddha = dynamicObjects.back();
+        
+        const Vector3 sceneCenter(470.398f, 240.364f, 181.7f);
+        //const Vector3 sceneCenter(470.398f, 240.364f, 180.3);
+        
+        Matrix4x4 transl = TranslationMatrix(sceneCenter);
+        buddha->GetTransform()->SetMatrix(transl);
+
+        for (int i = 0; i < 10; ++ i)
+        {
+                SceneEntity *ent = new SceneEntity(*buddha);
+                resourceManager->AddSceneEntity(ent);
+
+                Vector3 offs = Vector3::ZERO();
+
+                offs.x = RandomValue(.0f, 50.0f);
+                offs.y = RandomValue(.0f, 50.0f);
+
+                Vector3 newPos = sceneCenter + offs;
+
+                transl = TranslationMatrix(newPos);
+                Transform3 *transform = resourceManager->CreateTransform(transl);
+
+                ent->SetTransform(transform);
+                dynamicObjects.push_back(ent);
+        }
+#endif
+
+        
         resourceManager->mUseNormalMapping = false;
         resourceManager->mUseSpecialColors = false;
 
-        /*
-        buddha = dynamicObjects.back();
-        
-        const Vector3 sceneCenter(470.398f, 240.364f, 181.7f);
-        //const Vector3 sceneCenter(470.398f, 240.364f, 180.3);
-        
-        Matrix4x4 transl = TranslationMatrix(sceneCenter);
-        buddha->GetTransform()->SetMatrix(transl);
-
-        for (int i = 0; i < 10; ++ i)
-        {
-                SceneEntity *ent = new SceneEntity(*buddha);
-                resourceManager->AddSceneEntity(ent);
-
-                Vector3 offs = Vector3::ZERO();
-
-                offs.x = RandomValue(.0f, 50.0f);
-                offs.y = RandomValue(.0f, 50.0f);
-
-                Vector3 newPos = sceneCenter + offs;
-
-                transl = TranslationMatrix(newPos);
-                Transform3 *transform = resourceManager->CreateTransform(transl);
-
-                ent->SetTransform(transform);
-                dynamicObjects.push_back(ent);
-        }
-        */
 
 /*      int cityEntities = LoadModel("vienna_full_hp.dem", dynamicObjects);
@@ -942 +950 @@
         Vector3 sunDiffuse;
 
-#if 1
-        preetham->ComputeSunColor(lightDir, sunAmbient, sunDiffuse, !useHDRValues);
-
-        ambient[0] = sunAmbient.x;
-        ambient[1] = sunAmbient.y;
-        ambient[2] = sunAmbient.z;
-
-        diffuse[0] = sunDiffuse.x;
-        diffuse[1] = sunDiffuse.y;
-        diffuse[2] = sunDiffuse.z;
-
-#else
-        
-        ambient[0] = .2f;
-        ambient[1] = .2f;
-        ambient[2] = .2f;
-
-        diffuse[0] = 1.0f;
-        diffuse[1] = 1.0f;
-        diffuse[2] = 1.0f;
-
-#endif
+        if (useSkylightForIllum)
+        {
+                preetham->ComputeSunColor(lightDir, sunAmbient, sunDiffuse, !useHDRValues);
+
+                ambient[0] = sunAmbient.x;
+                ambient[1] = sunAmbient.y;
+                ambient[2] = sunAmbient.z;
+
+                diffuse[0] = sunDiffuse.x;
+                diffuse[1] = sunDiffuse.y;
+                diffuse[2] = sunDiffuse.z;
+        }
+        else
+        {
+
+                ambient[0] = .2f;
+                ambient[1] = .2f;
+                ambient[2] = .2f;
+
+                diffuse[0] = 1.0f;
+                diffuse[1] = 1.0f;
+                diffuse[2] = 1.0f;
+        }
 
         glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
@@ -1088 +1097 @@
 #endif
 
-
+/*
                 /////////////////////////
                 //-- update animations
@@ -1096 +1105 @@
 
                 Matrix4x4 rotMatrix = RotationZMatrix(rotAngle);
-                dynamicObjects[1]->GetTransform()->MultMatrix(rotMatrix);
+                dynamicObjects[2]->GetTransform()->MultMatrix(rotMatrix);
 
                 motionPath->Move(0.01f);
+                */
         }
 
@@ -1189 +1199 @@
         {
                 if (!viewCellsTree) LoadVisibilitySolution();
-                LoadPvs();      
+
+                LoadPvs();
         }
 
@@ -1309 +1320 @@
                 FrameBufferObject::Release();
 
-                if (!deferredShader) deferredShader = 
-                        new DeferredRenderer(texWidth, texHeight, camera, ssaoUseFullResolution);
-                
+                if (!deferredShader) 
+                {
+                        deferredShader = 
+                                new DeferredRenderer(texWidth, texHeight, camera, ssaoUseFullResolution);
+
+                        deferredShader->SetKernelRadius(ssaoKernelRadius);
+                        deferredShader->SetSampleIntensity(ssaoSampleIntensity);
+                        deferredShader->SetSsaoFilterRadius(ssaoFilterRadius);
+                }
+
                 DeferredRenderer::SHADING_METHOD shadingMethod;
 
@@ -1331 +1349 @@
                 deferredShader->SetShadingMethod(shadingMethod);
                 deferredShader->SetSamplingMethod(samplingMethod);
-                deferredShader->SetKernelRadius(ssaoKernelRadius);
-                deferredShader->SetSampleIntensity(ssaoSampleIntensity);
-                deferredShader->SetSsaoFilterRadius(ssaoFilterRadius);
+                
                 deferredShader->SetUseTemporalCoherence(useTemporalCoherence);
                 //deferredShader->SetSortSamples(sortSamples);
@@ -1475 +1491 @@
                 ssaoKernelRadius *= 0.8f;
                 cout << "new ssao kernel radius: " << ssaoKernelRadius << endl;
+                if (deferredShader) deferredShader->SetKernelRadius(ssaoKernelRadius);
                 break;
         case '0':
                 ssaoKernelRadius *= 1.0f / 0.8f;
+                if (deferredShader) deferredShader->SetKernelRadius(ssaoKernelRadius);
                 cout << "new ssao kernel radius: " << ssaoKernelRadius << endl;
                 break;
         case 'n':
                 ssaoSampleIntensity *= 0.9f;
+                if (deferredShader) deferredShader->SetSampleIntensity(ssaoSampleIntensity);
                 cout << "new ssao sample intensity: " << ssaoSampleIntensity << endl;
                 break;
         case 'N':
                 ssaoSampleIntensity *= 1.0f / 0.9f;
+                if (deferredShader) deferredShader->SetSampleIntensity(ssaoSampleIntensity);
                 cout << "new ssao sample intensity: " << ssaoSampleIntensity << endl;
                 break;
         case 'o':
                 ssaoFilterRadius *= 0.9f;
+                if (deferredShader) deferredShader->SetSsaoFilterRadius(ssaoFilterRadius);
                 cout << "new ssao filter radius: " << ssaoFilterRadius << endl;
                 break;
         case 'O':
                 ssaoFilterRadius *= 1.0f / 0.9f;
+                if (deferredShader) deferredShader->SetSsaoFilterRadius(ssaoFilterRadius);
                 cout << "new ssao filter radius: " << ssaoFilterRadius << endl;
                 break;
@@ -2587 +2609 @@
 
         viewCellsTree = visLoader.Load(vis_filename, bvh);
+
+        if (!viewCellsTree)
+        {
+                cerr << "loading pvs failed" << endl;
+                CleanUp();
+                exit(0);
+        }
 }
 

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/shaderenv.h

@@ -6 +6 @@
 //-- ssao + gi parameters
 
-//#define NUM_SAMPLES 8
+#define NUM_SAMPLES 8
 //#define NUM_SAMPLES 16
-#define NUM_SAMPLES 24
+//#define NUM_SAMPLES 24
 //#define NUM_SAMPLES 48
 

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

@@ -162 +162 @@
 
                 // the filtered ssao value
-                ao.x = DiscontinuityFilter(IN.texCoord, ao, col, ssaoTex, normalsTex, colorsTex, filterOffs, scale, bl, br, tl, tr);
+                //ao.x = DiscontinuityFilter(IN.texCoord, ao, col, ssaoTex, normalsTex, colorsTex, filterOffs, scale, bl, br, tl, tr);
         }
 

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

@@ -22 +22 @@
 };
 
-
+// this function is inspired from the paper of shamulgaan in order
+// to get a physical expression for the occlusion culling
 inline float occlusionPower(float radius, float dist)
 {