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authorZack Rusin <zackr@vmware.com>2013-05-13 23:07:14 -0400
committerZack Rusin <zackr@vmware.com>2013-05-14 03:10:56 -0400
commit5104ed3dbf18d47736fc67a8e3e317ea18360fa8 (patch)
treed161f1e6f09b3ab6846b064105b8cfc014b203cc /src/mesa/state_tracker
parentd5250da8189d0fb9741049cdbfc50e84aab44ecb (diff)
draw: try to prevent overflows on index buffers
Pass in the size of the index buffer, when available, and use it to handle out of bounds conditions. The behavior in the case of an overflow needs to be the same as with other overflows in the vertex processing pipeline meaning that a vertex should still be generated but all attributes in it set to zero. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: José Fonseca <jfonseca@vmware.com> Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Diffstat (limited to 'src/mesa/state_tracker')
-rw-r--r--src/mesa/state_tracker/st_draw_feedback.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mesa/state_tracker/st_draw_feedback.c b/src/mesa/state_tracker/st_draw_feedback.c
index ecd4661a284..fe66b99d562 100644
--- a/src/mesa/state_tracker/st_draw_feedback.c
+++ b/src/mesa/state_tracker/st_draw_feedback.c
@@ -233,7 +233,7 @@ st_feedback_draw_vbo(struct gl_context *ctx,
draw_set_indexes(draw,
(ubyte *) mapped_indices + ibuffer.offset,
- ibuffer.index_size);
+ ibuffer.index_size, ~0);
}
/* set the constant buffer */
@@ -252,7 +252,7 @@ st_feedback_draw_vbo(struct gl_context *ctx,
* unmap vertex/index buffers
*/
if (ib) {
- draw_set_indexes(draw, NULL, 0);
+ draw_set_indexes(draw, NULL, 0, 0);
if (ib_transfer)
pipe_buffer_unmap(pipe, ib_transfer);
pipe_resource_reference(&ibuffer.buffer, NULL);