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util/draw: handle draw_count=0 when reading indirect parameters

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Fixes: 3eb9932317 ("aux/draw: add a util function for reading back indirect draw params")

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15963>
This commit is contained in:
Mike Blumenkrantz 2022-04-19 16:06:44 -04:00 • committed by Marge Bot
parent efca37d415
commit 07437fa3bd
1 changed files with 4 additions and 0 deletions
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4
src/gallium/auxiliary/util/u_draw.c
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@ -154,6 +154,10 @@ util_draw_indirect_read(struct pipe_context *pipe,
draw_count = dc_param[0];
pipe_buffer_unmap(pipe, dc_transfer);
}
if (!draw_count) {
*num_draws = draw_count;
return NULL;
}
draws = malloc(sizeof(struct u_indirect_params) * draw_count);
if (!draws)
return NULL;