[Bug 14762] GeforceFX series: fullscreen PP effect issues / RECT texcoord fixup

wine-bugs at winehq.org wine-bugs at winehq.org
Sat Jul 4 06:13:27 CDT 2009


--- Comment #70 from Tobias Jakobi <liquid.acid at gmx.net>  2009-07-04 06:13:19 ---
Short status update:
(i) The constant packing code for GLSL is in git master, this should help with
applications that use a lot of NP2 textures - however most apps don't do that
and the FX won't run them at acceptable framerate anyway. The code still needs
fallback implementation, which means that it should disable the fixup if the
shader would fail because of too many uniforms (shader constants in GLSL) used.
This isn't done currently since the used uniforms are counted nowhere.

(ii) NP2 fixup code for ARB also went into git master - this already implements
constant packing and a fallback. Fallback was done because unsuccessfully
compiled shaders generate a lot of GL error noise when wine attempts to draw
with them. So we just disable the fixup once we run out of constants, peroid.
This isn't going to look that good but at least it "works" to some extent.
However I have yet to see a game that triggers the fallback.

(iii) All NP2 fixup code is currently exclusive to pixelshader mode, it won't
kick in when there is only a vertexshader active. A GLSL implementation for
vshader-only mode is planned - ARB.... maybe, but not very likely.

(iv) A testcase is still missing. Going to write one soon....

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