Home/ Questions/Q 3485634
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-18T10:55:52+00:00

I’m attempting to plot an iterative function in OpenGL ES. An array of ints

  • 0

I’m attempting to plot an iterative function in OpenGL ES. An array of ints is being updated with how often a given pixel is hit by the iterative function. I’d like to pass this density array to a fragment shader and use it to plot the result on a simple quad covering the whole screen.

My question is: can I pass this array directly to the shader as a uniform and generate pixels by using gl_FragCoord to look up the density for the given position

or

should I rather use the array to create a texture with one channel using GL_LUMINANCE and pass that to the shader?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You have a limited number of uniforms available, and the indexing might be troubling since not all GPUs support non-constant indexing. A 2D Nx1 texture doesn’t have any of these issues but will return values into the [0, 1] range. You can scale back this values to obtain the original integer and use it.

    • 0