C++ Texture generator

This process allows to live-code a texture generator for live visuals.

It is ideal for retro pixel texture effects with a DOS or Amiga vibe.

The code is written in C++ (23). The function score_rgba will be called at every frame with the pixels of the texture to write into. The texture’s data is retained across frames.

Be careful and save often: invalid memory accesses will make score crash as the C++ code is executed directly in-process!

Since the rendering is done on CPU, it is important to be mindful of the texture size: adjust the size of the render target in which the Texgen object is rendering to a smaller fixed size if the rendering is too slow.

Example

extern "C"
void score_rgba(unsigned char* rgba, int width, int height, int t)
{
  int k = 0;
  for(int j = 0; j < height; j++)
  {
    for(int i = 0; i < width; i++)
    {
      rgba[k++] = 255 * t * k / (width * height);
      rgba[k++] = 255 * t * k / (width * height);
      rgba[k++] = 255 * t * k / (width * height);
      rgba[k++] = 255 * t * k / (width * height);
    }
  }
}

Here are some examples from the presets that are part of the user library:

Try it!

Try it by downloading this simple example!