3 ms·

anyone have a recommendation for an introduction to using open gl for 2d stuff?

• Arelius 12y ago
  It's pretty much exactly the same thing except you multiply everything by a matrix that looks something like this instead of the standard projection matrix: 2/screen_width, 0, 0, 0.5, 0, -2/screen_height, 0, 0.5, 0, 0, 1, 0, 0, 0, 0, 1 Then assuming that you are drawing back-to-front and don't want to do depth-rejection you can just disable depth testing: glDisable(GL_DEPTH_TEST);
  • Rusky 12y ago
    Also sprite batching and texture atlasing tend to matter a little more since you're rendering a ton of 4-vertex sprites.
    • Arelius 12y ago
      Sure, but when you're at the tutorial level, I think you can mostly ignore that. Worry about it once you've got the rest down.
• tdsamardzhiev 12y ago
  I think you are better off using higher-level 2D library. For example, SDL will do the same, while reducing the amount of boilerplate code.