[Mesa-dev] [PATCH 0/3] R600-GCN: Improving performance on APUs & IGPs

[Marek Olšák]

Hi,

This disables buffer moves between VRAM and GTT by setting both of them as preferred heaps for APUs and IGPs.

Allocations go to VRAM if there is free space. If not, they go to GTT. If a buffer is evicted from VRAM to GTT, it will stay there. If it's evicted from GTT to swap, it can later be moved to either VRAM or GTT (whichever has free space).

Tonga with 128 MB VRAM (decreased for testing) is 2x faster in Heaven (1600x900 Ultra noAA) if I force has_dedicated_vram=false in Mesa, leading to literally 0 buffer evictions.

Please review.

Marek