freedreno/a6xx: Set index buffer size to bo size

The number of vertices may be out of bound and if we use it for
computing index buffer size we may get too big a size.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5552>

diff --git a/src/gallium/drivers/freedreno/a6xx/fd6_draw.c b/src/gallium/drivers/freedreno/a6xx/fd6_draw.c
index 0279b2e..f8b87b7 100644 (file)
--- a/src/gallium/drivers/freedreno/a6xx/fd6_draw.c
+++ b/src/gallium/drivers/freedreno/a6xx/fd6_draw.c
@@ -82,7 +82,7 @@ draw_emit(struct fd_ringbuffer *ring,
                assert(!info->has_user_indices);
 
                struct pipe_resource *idx_buffer = info->index.resource;
-               uint32_t idx_size = info->index_size * info->count;
+               uint32_t idx_size = idx_buffer->width0 - index_offset;
                uint32_t idx_offset = index_offset + info->start * info->index_size;
 
                OUT_PKT(ring, CP_DRAW_INDX_OFFSET,