Topic summary
GPU cache
Extracted from the Wikipedia article Cache (computing).
GPU cache
Earlier graphics processing units (GPUs) often had limited read-only texture caches and used swizzling to improve 2D locality of reference. Cache misses would drastically affect performance, e.g. if mipmapping was not used. Caching was important to leverage 32-bit (and wider) transfers for texture data that was often as little as 4 bits per pixel.