https://bugs.freedesktop.org/show_bug.cgi?id=28800
--- Comment #20 from ?lmos <aaalmosss at gmail.com> 2010-12-16 06:12:18 PST --- Created an attachment (id=41170) View: https://bugs.freedesktop.org/attachment.cgi?id=41170 Review: https://bugs.freedesktop.org/review?bug=28800&attachment=41170 r300g_multitexturing.diff I played around with the tmu texture cache region assignment code, read the corresponding part of the r3xx register manual, and deduced the following: - you must assign different region for different textures - assigned regions must not overlap The existing code guarantees none of these, especially if there are partial updates (which are quite common). The texture corruption is the result of the tmu loading different textures into the same cache area (possibly in different formats), and only one of them won't be garbage. This only applies to r3xx and r4xx, because r5xx ignores this parameter and assigns cache automatically. My patch doesn't guarantee anything either, is meant to be a proof-of-concept (or more like a hackload of hacky hacks), that almost completely fixes texturing in ut2004, vastly improves the situation in etqw (the corruption occurs only on strogg architecture and vehicles instead of almost everywhere), and changes nothing in googleearth. Doom3 would also be a good test, but it crashes since I increased GART from 64MB to 256MB. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.
