Hyrule Field Minimap

[killown]

(11-21-2012, 06:04 AM)NaturalViolence Wrote:

Quote:So I guess the dolphin for linux has poor performance compared to dolphin for windows

No it doesn't.

Quote:and also your processor has sse 4.* which speed up a little

No it doesn't. Dolphin gains no benefit from SSE4 support.

Quote:Then it's not an Opengl problem, that is more CPU issue

It's a stalling issue on the GPU side:

neobrain Wrote:The slowdown in Hyrule Field arises from the game changing the BPMEM_TEV_COLOR_ENV register a lot when drawing the minimap. Whenever it's changing that register, we need to flush the GPU's pipeline (i.e. render all vertices that have been queued up to that point). Flushing the GPU's pipeline once when lots of vertices have been queued is a LOT faster than flushing it multiple time when only few vertices have been queued each time. In Hyrule Field, the latter case applies, which is the reason why it's running that slow.

There really is no possible way to workaround this*. GPUs can render a batch of vertices only with the same configuration, that's just a fact. You can't just randomly tell the GPU to do stuff differently after it has rendered half of the vertices

so why not disable the minimap to prevent BPMEM_TEV_COLOR_ENV register high usage?