[Bug 17818] Runes of Magic menus like EULA or login doesn't appear on some graphic cards.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=17818





--- Comment #87 from Indirectly Indexed <burp at nurfuerspam.de>  2010-06-15 06:00:04 ---
> Looks like a typical case of running out of available uniforms.

Not really. The shader program uses indirect addressing, which means wine
doesn't know which uniforms are used and reserves the maximum (which is 256 - 3
in glsl_shader.c).

Unfortunately the shader program also uses c254. It might be possible to remap
254 to something lower in this special case, but that might interfere with the
indirect addressing.

What would help in this specific case (without breaking others) were to fixup
the cutting in glsl_shader.c. From my understanding you only need 3 uniforms on
nvidia cards and even then not in every case of shader program. Instead of
hardcoded 3 the analyzer/rewriter code should check what it actually needs, but
I guess that's very very low priority for so little gain.

I can only say that RoM mostly works fine on my ATI 4870 card by only taking 1
instead of 3 uniforms (i.e. declaration ends up to be VC[255]). (There are
shader issues over a *long* play session, but that seems to be a problem of RoM
in general.)

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