Home/ Questions/Q 88723
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-10T22:36:17+00:00

I need to display 2d images in opengl using textures. The image dimensions are

  • 0

I need to display 2d images in opengl using textures.
The image dimensions are not necessarily powers of 2.
I thought of creating a larger texture and restricting the display to the part I was using but the image data will be shared with openCV so I don’t want to copy data a pixel at a time into a larger texture.

EDIT – it turns out that even the simplest Intel on board graphics under Windows supports none-power-of-2 textures.

EDIT2 – and even if you don’t have arb texture size, then making your image smaller and rescaling to the window size it is very fast even on low end hardware

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. A couple of GL extensions come to mind. Have a look at GL_ARB_texture_rectangle (if you don’t need mipmapping), or GL_ARB_texture_non_power_of_two (if you do).

    • 0