[Bug 34011] Path of Exile stutters constantly

wine-bugs at winehq.org wine-bugs at winehq.org
Sat Aug 26 11:41:39 CDT 2017


https://bugs.winehq.org/show_bug.cgi?id=34011

--- Comment #36 from Robert Xiao <nneonneo at gmail.com> ---
Previously I was getting crash-on-startup from glsl=disabled. I patched wined3d
to increase the number of float constants (my gfx driver reported only
supporting 128 constants, but some PoE shaders use up to 140):

diff --git a/dlls/wined3d/arb_program_shader.c
b/dlls/wined3d/arb_program_shader.c
index fa72b4f..da8b10b 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -4942,7 +4942,7 @@ static void shader_arb_get_caps(const struct
wined3d_gl_info *gl_info, struct sh
         if (gl_info->limits.arb_ps_native_constants < 24)
             ps_consts = gl_info->limits.arb_ps_float_constants;
         else
-            ps_consts = min(gl_info->limits.arb_ps_float_constants,
gl_info->limits.arb_ps_native_constants);
+            ps_consts = max(gl_info->limits.arb_ps_float_constants,
gl_info->limits.arb_ps_native_constants);

         if (gl_info->supported[NV_FRAGMENT_PROGRAM2])
         {

After this change, glsl=disabled works. I also had to add the game options
"--noasync --nopreload" to prevent an outbreak of black/missing textures.

A few effects are missing due presumably to my horrible patch and the limited
HLSL shader support, but it works well enough to be usable. It still crashes
after a while due to memory exhaustion; this is tracked in bug #43545.

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