Most of the games using EFB peeks are suffering from major performance problems
when these peeks are not disabled in the graphics settings. This is an attempt
to fix this in the GL renderer by doing the glReadPixels in bulk: instead of
doing a lot of 1x1 pixel reads, read for 64x64 pixels at once and keep that in
a cache.
Deck menu in Baten Kaitos: 3FPS -> 54FPS
Character creation in Monster Hunter Tri: 7FPS -> 60FPS
zcomploc is a feature of the BP which switch depth test from before the alpha
test to after the alpha test. This way, transparent fragments are written to
the depth buffer too.
The current implementation is quite hacky and does not cover all cases but is
enough to fix problems in a lot of game. A complete implementation would
require a multipass rendering method and is attempted in the
zcomploc-experimental branch.
According to testers feedback, fixes bugs in the following games:
- Baten Kaitos
- Baten Kaitos Origins
- 007: Everything or Nothing
- Ty the Tasmanian Tiger
- Tony Hawk's Pro Skater 3
And probably other games too.
Conflicts (because of new-shadercache-uids):
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
In previous revisions of Dolphin, changing texture generation settings (via
GX_SetTexCoordGen for example) did not regenerate the vertex shader and flush
the vertices. Adding this flush should fix texture problems in a few game, for
example in Superman: Shadow of Apokolips:
Before: http://i.imgur.com/mHmfb.jpg
After: http://i.imgur.com/2ThES.png
Pierre Bourdon
