- int highpixels_index; // which one is active - this toggles when doing blur
- float *highpixels; // equals blurpixels[highpixels_index]
- float *blurpixels[2];
- unsigned char *u8pixels; // temporary processing buffer when outputting to rgba8 format
- unsigned short *fp16pixels; // temporary processing buffer when outputting to rgba16f format