pre_clip_pos is a float[4] we just use (*float)[4] to be able to
jump within the array of vertex_headers with it. So if the idx
happened to be anything but 0, we'd actually read from some garbage
in memory. Always use 0 to correctly offset withing float[4].
Signed-off-by: Zack Rusin <za...@vmware.com>
---
src/gallium/auxiliary/draw/draw_pt_so_emit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/gallium/auxiliary/draw/draw_pt_so_emit.c
b/src/gallium/auxiliary/draw/draw_pt_so_emit.c
index ae071a6..64831a8 100644
--- a/src/gallium/auxiliary/draw/draw_pt_so_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_so_emit.c
@@ -170,7 +170,7 @@ static void so_emit_prim(struct pt_so_emit *so,
draw->so.targets[ob]->internal_offset) +
state->output[slot].dst_offset;
if (idx == so->pos_idx && pcp_ptr)
- memcpy(buffer, &pre_clip_pos[idx][start_comp], num_comps *
sizeof(float));
+ memcpy(buffer, &pre_clip_pos[0][start_comp], num_comps *
sizeof(float));
else
memcpy(buffer, &input[idx][start_comp], num_comps * sizeof(float));
}
--
1.7.10.4
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