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radv: use null vertex descriptor if num_records=0

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11642>
This commit is contained in:
Rhys Perry 2021-06-29 18:54:45 +01:00 • committed by Marge Bot
parent a2ac660eb7
commit 307a4bf4ab
1 changed files with 9 additions and 1 deletions
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10
src/amd/vulkan/radv_cmd_buffer.c
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@ -2920,8 +2920,16 @@ radv_flush_vertex_descriptors(struct radv_cmd_buffer *cmd_buffer, bool pipeline_
/* GFX10 uses OOB_SELECT_RAW if stride==0, so convert num_records from elements into
* into bytes in that case. GFX8 always uses bytes.
*/
if (num_records && (chip == GFX8 || (chip >= GFX10 && !stride)))
if (num_records && (chip == GFX8 || (chip >= GFX10 && !stride))) {
num_records = (num_records - 1) * stride + attrib_end;
} else if (!num_records) {
/* On GFX9 (GFX6/7 untested), it seems bounds checking is disabled if both
* num_records and stride are zero. This doesn't seem necessary on GFX8, GFX10 and
* GFX10.3 but it doesn't hurt.
*/
memset(desc, 0, 16);
continue;
}
} else {
if (chip != GFX8 && stride)
num_records = DIV_ROUND_UP(num_records, stride);