/**
* @brief Render sphere
*/
void render (const Tucano::Camera& camera, const Tucano::Camera& light)
{
Eigen::Vector4f viewport = camera.getViewport();
glViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
sphere_shader.bind();
sphere_shader.setUniform("modelMatrix", model_matrix);
sphere_shader.setUniform("viewMatrix", camera.getViewMatrix());
sphere_shader.setUniform("projectionMatrix", camera.getProjectionMatrix());
sphere_shader.setUniform("lightViewMatrix", light.getViewMatrix());
sphere_shader.setUniform("in_Color", color);
vector <string> attribs;
sphere_shader.getActiveAttributes(attribs);
this->setAttributeLocation(&sphere_shader);
glEnable(GL_DEPTH_TEST);
this->bindBuffers();
this->renderElements();
this->unbindBuffers();
glDisable(GL_DEPTH_TEST);
sphere_shader.unbind();
#ifdef TUCANODEBUG
errorCheckFunc(__FILE__, __LINE__);
#endif
}
void Volume::calculateGradient(){
cout<<" Calculating gradient "<<endl;
gradShader = new Shader("shaders/","gradShader",1);
gradShader->initialize();
gradShader->enable();
cout<<" Shader initialized "<<endl;
texture = new Texture();
texture->create(GL_TEXTURE_3D, GL_RGBA8, volSize[0], volSize[1], GL_RGBA, GL_UNSIGNED_BYTE, NULL, volSize[2]);
GLuint unit = texture->bind();
glBindImageTexture(unit, texture->texID(), 0, GL_TRUE, 0, GL_READ_WRITE, GL_RGBA8);
GLint baseUnit = scratchTexture->bind();
Eigen::Vector3f dimensions = getTextureResolution();
gradShader->setUniform("baseTexture", baseUnit);
gradShader->setUniform("gradientTexture", (GLint)unit);
gradShader->setUniform("resolution", &dimensions[0], 3, 1);
glDispatchCompute(volSize[0], volSize[1], volSize[2]);
glBindImageTexture(0, 0, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_RGBA32F);
scratchTexture->unbind();
texture->unbind();
errorCheckFunc(__FILE__, __LINE__);
}
void Volume::loadVolume(){
cout << "Loading volume..."<<endl;
cout << volSize[0] << " " << volSize[1] << " " << volSize[2] << endl;
mesh -> createParallelepiped(realDimension[0], realDimension[1], realDimension[1]);
cout<< "Parallelepiped created, now to the texture..."<<endl;
scratchTexture = new Texture();
cout << "Texture instantiated." << endl;
scratchTexture->create(GL_TEXTURE_3D, GL_R8, volSize[0], volSize[1], GL_RED, GL_UNSIGNED_BYTE, voxelArray, volSize[2]); // "Id =" because...
//...this funcion returns a GLuint value that represents the texture ID.
cout << "Texture created." << endl;
scratchTexture->setTexParameters(GL_CLAMP, GL_CLAMP, GL_CLAMP, GL_LINEAR, GL_LINEAR);
errorCheckFunc(__FILE__, __LINE__);
cout << "Texture parameters set." << endl;
cout<<"Texture successfully created!"<<endl;
delete voxelArray;
calculateGradient();
errorCheckFunc(__FILE__, __LINE__);
}
