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freedreno/a6xx: Add VPC hardware workaround for a750

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Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31534>
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Rob Clark 2024-10-14 10:04:22 -07:00 • committed by Marge Bot
parent ecc8d271e1
commit a1f2a8ebb9
1 changed files with 10 additions and 0 deletions
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10
src/gallium/drivers/freedreno/a6xx/fd6_program.cc
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@ -730,6 +730,16 @@ emit_vpc(struct fd_ringbuffer *ring, const struct program_builder *b)
setup_stream_out_disable(b->ctx);
}
/* There is a hardware bug on a750 where STRIDE_IN_VPC of 5 to 8 in GS with
* an input primitive type with adjacency, an output primitive type of
* points, and a high enough vertex count causes a hang.
*/
if (b->ctx->screen->info->a7xx.gs_vpc_adjacency_quirk &&
b->gs && b->gs->gs.output_primitive == MESA_PRIM_POINTS &&
linkage.max_loc > 4) {
linkage.max_loc = MAX2(linkage.max_loc, 9);
}
/* The GPU hangs on some models when there are no outputs (xs_pack::CNT),
* at least when a DS is the last stage, so add a dummy output to keep it
* happy if there aren't any. We do this late in order to avoid emitting