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authorIan Romanick <ian.d.romanick@intel.com>2015-09-14 11:59:22 -0700
committerIan Romanick <ian.d.romanick@intel.com>2015-09-23 09:56:46 -0700
commit25543d8ec506ef32599af6f5e0dd735e01b39909 (patch)
tree747d7f30ced8414b52eaafa384a30f9567b53425 /src/mesa
parentc0b3b2f7603eab210acdb2e654e5411fe912ca34 (diff)
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t_dd_dmatmp: Use addition instead of subtraction in loop bounds
This is used everywhere else in this file because it avoids problems when count is zero (due to trimming). No piglit regressions on i915 (G33) or radeon (Radeon 7500). Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38109 Reviewed-by: Brian Paul <brianp@vmware.com> Cc: Marius Predut <marius.predut@intel.com> Cc: "10.6 11.0" <mesa-stable@lists.freedesktop.org>
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/tnl_dd/t_dd_dmatmp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/tnl_dd/t_dd_dmatmp.h b/src/mesa/tnl_dd/t_dd_dmatmp.h
index 6e60acd..b127605 100644
--- a/src/mesa/tnl_dd/t_dd_dmatmp.h
+++ b/src/mesa/tnl_dd/t_dd_dmatmp.h
@@ -623,7 +623,7 @@ static void TAG(render_quads_verts)( struct gl_context *ctx,
INIT(GL_TRIANGLES);
- for (j = 0; j < count-3; j += 4) {
+ for (j = 0; j + 3 < count; j += 4) {
void *tmp = ALLOC_VERTS( 6 );
/* Send v0, v1, v3
*/