// the program starts here
void AppMain() {
// initialise GLFW
if(!glfwInit())
throw std::runtime_error("glfwInit failed");
// open a window with GLFW
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_TRUE);
if(!glfwOpenWindow((int)SCREEN_SIZE.x, (int)SCREEN_SIZE.y, 8, 8, 8, 8, 16, 0, GLFW_WINDOW))
throw std::runtime_error("glfwOpenWindow failed. Can your hardware handle OpenGL 3.2?");
// GLFW settings
glfwDisable(GLFW_MOUSE_CURSOR);
glfwSetMousePos(0, 0);
glfwSetMouseWheel(0);
// initialise GLEW
glewExperimental = GL_TRUE; //stops glew crashing on OSX :-/
if(glewInit() != GLEW_OK)
throw std::runtime_error("glewInit failed");
// GLEW throws some errors, so discard all the errors so far
while(glGetError() != GL_NO_ERROR) {}
// print out some info about the graphics drivers
std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
std::cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;
std::cout << "Vendor: " << glGetString(GL_VENDOR) << std::endl;
std::cout << "Renderer: " << glGetString(GL_RENDERER) << std::endl;
// make sure OpenGL version 3.2 API is available
if(!GLEW_VERSION_3_2)
throw std::runtime_error("OpenGL 3.2 API is not available.");
// OpenGL settings
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
// load vertex and fragment shaders into opengl
LoadShaders();
// load the texture
LoadTexture();
// create buffer and fill it with the points of the triangle
LoadCube();
// setup gCamera
gCamera.setPosition(glm::vec3(0,0,4));
gCamera.setViewportAspectRatio(SCREEN_SIZE.x / SCREEN_SIZE.y);
// run while the window is open
double lastTime = glfwGetTime();
while(glfwGetWindowParam(GLFW_OPENED)){
// update the scene based on the time elapsed since last update
double thisTime = glfwGetTime();
Update(thisTime - lastTime);
lastTime = thisTime;
// draw one frame
Render();
// check for errors
GLenum error = glGetError();
if(error != GL_NO_ERROR)
glPrintError();
//exit program if escape key is pressed
if(glfwGetKey(GLFW_KEY_ESC))
glfwCloseWindow();
}
// clean up and exit
glfwTerminate();
}
int main(int argc, char *argv[]){
if(!glfwInit()){
throw std::runtime_error("glfwInit failed");
}
glfwOpenWindowHint(GLFW_FSAA_SAMPLES, 4);
glfwOpenWindowHint(0, GLFW_OPENGL_CORE_PROFILE);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 1);
glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_TRUE);
if(!glfwOpenWindow(800, 600, 0, 0, 0, 0, 32, 0, GLFW_WINDOW)){
throw std::runtime_error("glfwOpenWindow failed. does this hardware work with 3.1");
}
glewExperimental = GL_TRUE;
if(glewInit() != GLEW_OK){
throw std::runtime_error("glewInit failed");
}
if(!GLEW_VERSION_3_1){
throw std::runtime_error("OpenGL 3.1 API is not available");
}
LoadGeometry();
LoadTexture();
PrepVertexUniforms();
init_font();
printf("All data prepped\n");
camera.setPosition(glm::vec3(0,0,8));
camera.setViewportAspectRatio(screenwidth/screenheight);
light.position = camera.position();
light.intensities = glm::vec3(1,1,1);
glfwDisable(GLFW_MOUSE_CURSOR);
glfwSetMousePos(0, 0);
glfwSetMouseWheel(0);
printf("camera prepped\n");
//turn on depth test so things dont look stupid
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glEnable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
printf("starting main loop\n");
while(glfwGetWindowParam(GLFW_OPENED)){
update();
display();
//check for errors
GLenum error = glGetError();
if(error != GL_NO_ERROR){
glPrintError();
}
//esc == close
if(glfwGetKey(GLFW_KEY_ESC)){
glfwCloseWindow();
}
}
glfwTerminate();
return 0;
}
// the program starts here
void AppMain() {
// initialise GLFW
if(!glfwInit())
throw std::runtime_error("glfwInit failed");
// open a window with GLFW
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2);
glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, GL_TRUE);
if(!glfwOpenWindow((int)SCREEN_SIZE.x, (int)SCREEN_SIZE.y, 8, 8, 8, 8, 16, 0, GLFW_WINDOW))
throw std::runtime_error("glfwOpenWindow failed. Can your hardware handle OpenGL 3.2?");
// GLFW settings
glfwDisable(GLFW_MOUSE_CURSOR);
glfwSetMousePos(0, 0);
glfwSetMouseWheel(0);
// initialise GLEW
glewExperimental = GL_TRUE; //stops glew crashing on OSX :-/
if(glewInit() != GLEW_OK)
throw std::runtime_error("glewInit failed");
// GLEW throws some errors, so discard all the errors so far
while(glGetError() != GL_NO_ERROR) {}
// print out some info about the graphics drivers
std::cout << "OpenGL version: " << glGetString(GL_VERSION) << std::endl;
std::cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << std::endl;
std::cout << "Vendor: " << glGetString(GL_VENDOR) << std::endl;
std::cout << "Renderer: " << glGetString(GL_RENDERER) << std::endl;
// make sure OpenGL version 3.2 API is available
if(!GLEW_VERSION_3_2)
throw std::runtime_error("OpenGL 3.2 API is not available.");
// OpenGL settings
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
// initialise the gWoodenCrate asset
LoadWoodenCrateAsset();
// create all the instances in the 3D scene based on the gWoodenCrate asset
CreateInstances();
// setup gCamera
gCamera.setPosition(glm::vec3(-4,0,17));
gCamera.setViewportAspectRatio(SCREEN_SIZE.x / SCREEN_SIZE.y);
gCamera.setNearAndFarPlanes(0.5f, 100.0f);
// setup gLight
gLight.position = glm::vec3(-4,0,4);
gLight.intensities = glm::vec3(1,1,1); //white
gLight.attenuation = 0.2f;
gLight.ambientCoefficient = 0.005f;
// run while the window is open
double lastTime = glfwGetTime();
while(glfwGetWindowParam(GLFW_OPENED)){
// update the scene based on the time elapsed since last update
double thisTime = glfwGetTime();
Update((float)(thisTime - lastTime));
lastTime = thisTime;
// draw one frame
Render();
// check for errors
GLenum error = glGetError();
if(error != GL_NO_ERROR)
glPrintError();
//exit program if escape key is pressed
if(glfwGetKey(GLFW_KEY_ESC))
glfwCloseWindow();
}
// clean up and exit
glfwTerminate();
}
