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radv: Flush before copying with PKT3_WRITE_DATA in CmdUpdateBuffer

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Need to flush before updating the buffer to ensure that the copy is
ordered after previous accesses (assuming the app has performed the
appropriate barriers).

This fixes potential issues due to draws prior to an update reading
the new buffer content, despite having the necessary barriers between
them.

Signed-off-by: Alex Smith <asmith@feralinteractive.com>
Cc: 17.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Smith 2017-03-14 15:26:32 +00:00 • committed by Bas Nieuwenhuizen
parent cce43f6d8c
commit e0cc32b85b
1 changed files with 2 additions and 0 deletions
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2
src/amd/vulkan/radv_meta_buffer.c
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@ -524,6 +524,8 @@ void radv_CmdUpdateBuffer(
assert(!(va & 3));
if (dataSize < 4096) {
si_emit_cache_flush(cmd_buffer);
cmd_buffer->device->ws->cs_add_buffer(cmd_buffer->cs, dst_buffer->bo, 8);
radeon_check_space(cmd_buffer->device->ws, cmd_buffer->cs, words + 4);