void VideoViewer::initializeGL()
{
glEnable(GL_VERTEX_ARRAY);
glEnable(GL_TEXTURE_2D);
makeShaders();
makeGeometry();
//updateTexture();
glGenTextures(1, &_textureId);
glBindTexture(GL_TEXTURE_2D, _textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
/*
Initializes opengl states
*/
void glutWidget::initOpenGL()
{
glewExperimental = GL_TRUE;
GLenum err = glewInit(); //initialize GLEW - this enables us to use extensions
if(err != GLEW_OK)
{
std::cout << "ERROR: Loading GLEW failed." << std::endl;
exit(-1);
}
checkExtensions();
glClearColor(1.0f, 1.0f, 1.0f, 1.0f); //default "empty"/background color is set to white
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
makeShaders(); //load data of fragment and vertex programs/shaders - compile shaders
srand(time(NULL));
color = rand() % 100 + 1;
}
/*
Initializes opengl states
*/
void glutWidget::initOpenGL()
{
glewExperimental = GL_TRUE;
GLenum err = glewInit(); //initialize GLEW - this enables us to use extensions
if(err != GLEW_OK)
{
std::cout << "ERROR: Loading GLEW failed." << std::endl;
exit(-1);
}
checkExtensions();
glClearColor(1, 1, 1, 0); //default "empty"/background color is set to white
glEnable(GL_DEPTH_TEST);
CBitmap skybox("skybox.bmp"); //read bitmap image
glGenTextures(1, &m_texture); //allocate 1 texture
glUniform1i(skybox_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, skybox_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, skybox.GetWidth(), skybox.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, skybox.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0);
CBitmap streets("streets.bmp"); //read bitmap image
glGenTextures(1, &street_texture); //allocate 1 texture
glUniform1i(street_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, street_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, streets.GetWidth(), streets.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, streets.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
CBitmap car("car.bmp"); //read bitmap image
glGenTextures(1, &car_texture); //allocate 1 texture
glUniform1i(car_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, car_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, car.GetWidth(), car.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, car.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
CBitmap structure("structure.bmp"); //read bitmap image
glGenTextures(1, &structure_texture); //allocate 1 texture
glUniform1i(structure_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, structure_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, structure.GetWidth(), structure.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, structure.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
CBitmap wall("wall.bmp"); //read bitmap image
glGenTextures(1, &wall_texture); //allocate 1 texture
glUniform1i(wall_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, wall_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, wall.GetWidth(), wall.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, wall.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
makeShaders(); //load data of fragment and vertex programs/shaders - compile shaders
glMatrixMode(GL_PROJECTION);
glLoadIdentity(); //initializes projection matrix with identity
gluPerspective(60,(float)m_width/(float)m_height,0.1,1000); //set up projection mode (field of view, aspect ratio, near and far clipping plane)
glMatrixMode(GL_MODELVIEW);
glLoadIdentity(); //initializes modelview matrix with identity
glEnable(GL_CULL_FACE);
}