fixed

gui/canvas.cpp

@@ -69,7 +69,7 @@ void Canvas::paintGL()
 
     if(renderMode == RENDER_MODE_RAYCASTING)
     {
-        glEnable(GL_BLEND);
+        /*glEnable(GL_BLEND);
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
         glBegin(GL_QUADS);
@@ -84,7 +84,7 @@ void Canvas::paintGL()
 
         glColor4f(0.9490f, 0.9647f, 0.9803f, 1.f);
         glVertex2f(1.f, -1.f);
-        glEnd();
+        glEnd();*/
 
         render_raycasting(img, deviceVolume, transferFunction, camera, volumeReader.GetElementBoundingSphereRadius());
     }

gui/canvas.h

@@ -142,6 +142,7 @@ class Canvas : public QGLWidget
     {
         this->exposure = exposure;
         UpdateCamera();
+        ReStartRender();
     }
 
     // clip plane

gui/transferfunction.cpp

@@ -176,3 +176,35 @@ void TransferFunction::onColorTFChanged()
     //signal changed
     Changed();
 }
+
+void TransferFunction::SetTFConfiguration(uint32_t n, float *index, float *rgb, float *alpha)
+{
+    opacityTF->RemoveAllPoints();
+    colorTF->RemoveAllPoints();
+
+    for(auto i = 0; i < n; ++i)
+    {
+        opacityTF->AddPoint(index[i], alpha[i]);
+        colorTF->AddRGBPoint(index[i], rgb[i * 3], rgb[i * 3 + 1], rgb[i * 3 + 2]);
+    }
+
+    if(compositeTex)
+    {
+        checkCudaErrors(cudaDestroyTextureObject(compositeTex));
+        compositeTex = 0;
+    }
+
+    opacityTF->GetTable(0.0, 1.0, TABLE_SIZE, opacityTable);
+    colorTF->GetTable(0.0, 1.0, TABLE_SIZE, colorTable);
+    size_t j = 0, k = 0;
+    for(size_t i = 0; i < TABLE_SIZE; ++i)
+    {
+        compositeTable[j++] = colorTable[k++];
+        compositeTable[j++] = colorTable[k++];
+        compositeTable[j++] = colorTable[k++];
+        compositeTable[j++] = opacityTable[i];
+    }
+
+    checkCudaErrors(cudaMemcpyToArray(array, 0, 0, compositeTable, sizeof(float) * TABLE_SIZE * 4, cudaMemcpyHostToDevice));
+    checkCudaErrors(cudaCreateTextureObject(&compositeTex, &resourceDesc, &texDesc, NULL));
+}

gui/transferfunction.h

@@ -31,13 +31,15 @@ class TransferFunction : public QObject
 {
     Q_OBJECT
 public:
+    TransferFunction() {}
     explicit TransferFunction(vtkSmartPointer<vtkPiecewiseFunction> otf, vtkSmartPointer<vtkColorTransferFunction> ctf, QObject *parent = 0);
     ~TransferFunction();
 
     cudaTextureObject_t GetCompositeTFTextureObject() {return compositeTex;}
     float GetMaxOpacityValue() {return maxOpacity;}
     void SaveCurrentTFConfiguration();
     void LoadExistingTFConfiguration();
+    void SetTFConfiguration(uint32_t n, float* index, float* rgb, float* alpha);
 
 signals:
     void Changed();

pathtracer.cu

@@ -168,7 +168,7 @@ __inline__ __device__ glm::vec3 sample_bsdf(const VolumeSample& vs, glm::vec3* w
     return glm::vec3(0.f);
 }
 
-__inline__ __device__ glm::vec3 estimate_direct_light(const VolumeSample vs, curandState& rng, ShadingType st)
+__inline__ __device__ glm::vec3 estimate_direct_light(const VolumeSample& vs, curandState& rng, ShadingType st)
 {
     glm::vec3 Li = glm::vec3(0.f);