Initialisation

• Create window that has size width, height
• Use WGL to initialise OpenGL
• SetPixelFormat(...)
• wglCreateContextAttribsARB(...)
• wglMakeCurrent(...)
• Set up viewport
• glViewport(0, 0, width, height);
• Set up the projection matrix
• glm::perspective(45.0f, (GLfloat)width/(GLfloat)height, 1, 150.0f);
• Load shaders and other resources, compile, pass to GPU
• Pass geometry to GPU

Typically the modeling, viewing, and projection matrices are used in the vertex shader to transform points.

Rendering a frame

• Clear the buffers
• glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
• Set the view (or modelview) matrix
• glm::lookAt();
• Set the model (or modelview) matrix
• glm::translate(), glm::rotate(), glm::scale()
• Pass matrices to shader
• Render object
• glDrawArrays()
• Swap buffers to display the rendered frame

Just with this you could make a game!

High