[Bug 10580] S.T.A.L.K.E.R. shadow corruption

http://bugs.winehq.org/show_bug.cgi?id=10580

--- Comment #21 from Vitaliy Margolen   2008-05-26 14:24:19 ---
(In reply to comment #20)
> Probably the shader_addline(buffer, "const vec4 LC%d = vec4(%f, %f, %f, %f)")
> causes a precision loss because the float value is transformed into a string.

Indeed this fixes the problem:
-shader_addline(buffer, "const vec4 LC%u = vec4(%f, %f, %f, %f);\n",
lconst->idx,
+shader_addline(buffer, "const vec4 LC%u = vec4(%.12f, %.12f, %.12f,
%.12f);\n", lconst->idx,

I think all such places needs to be changed to higher precision.