Hi,
finally I have found the bug which causes plibs menus (libpu) to flicker
with GLX-MGA.
The ShadeModel and corresponding "TriangleCaps" does not get reset on
glPopAttrib (glPushAttrib with GL_LIGHTING_BIT).
Here is a fix: (mesa_3_2_dev branch)
Index: attrib.c
===================================================================
RCS file: /cvs/mesa3d/Mesa/src/attrib.c,v
retrieving revision 1.10
diff -u -w -r1.10 attrib.c
--- attrib.c 1999/11/08 15:28:08 1.10
+++ attrib.c 1999/11/22 17:48:12
@@ -624,6 +624,15 @@
}
(*ctx->Driver.Enable)( ctx, GL_LIGHTING, ctx->Light.Enabled );
}
+
+ /* emulate gl_ShadeModel here: */
+ if (ctx->Light.ShadeModel == GL_FLAT)
+ ctx->TriangleCaps |= DD_FLATSHADE;
+ else
+ ctx->TriangleCaps &= ~DD_FLATSHADE;
+ if (ctx->Driver.ShadeModel)
+ (*ctx->Driver.ShadeModel)(ctx, ctx->Light.ShadeModel);
+
ctx->Enabled &= ENABLE_LIGHT;
if (ctx->Light.Enabled && !is_empty_list(&ctx->Light.EnabledList))
ctx->Enabled |= ENABLE_LIGHT;
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