This came through on the g200 list; thought I'd pass it on since I
don't see it on the mesa list.
-ralph
------ Forwarded message ------
From: Andy Sloane <[EMAIL PROTECTED]>
Subject: [g200-dev]glDrawElements crash/patch
Date: Sat, 3 Jul 1999 22:53:05 -0500
To: [EMAIL PROTECTED]
I was repeatedly seeing a crash in glDrawElements (which, over the GLX
protocol, is the same as glDrawArray). My coworker and I did some
debugging and found that the texture coordinates GLvertex4f structure had a
zero size and the resulting call to Transform caused a crash. The
following simple fix (to the mesa code tree) prevents this, but doesn't
entirely solve the problem:
Index: varray.c
===================================================================
RCS file: /cvs/mesa3d/src/varray.c,v
retrieving revision 3.30
diff -u -r3.30 varray.c
--- varray.c 1999/06/01 10:42:29 3.30
+++ varray.c 1999/07/04 03:48:44
@@ -561,6 +561,7 @@
VSrc.TexCoord[i] = &tc[i];
tc[i].data = (GLfloat (*)[4]) ctx->Array.TexCoord[i].Ptr;
tc[i].stride = ctx->Array.TexCoord[i].StrideB;
+ tc[i].size = ctx->Array.TexCoord[i].Size;
tc[i].flags = 0;
update |= flag;
} else {
If an array of vertices has any of the polygons clipped, the whole thing
fails to be rendered. I've only tested this with our game which I'm afraid
I can't give out at this point. :)
-Andy.
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information design? what's that?
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