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hk: use zero sink for null index buffer

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33682>
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Alyssa Rosenzweig 2025-01-24 12:46:30 -05:00 • committed by Marge Bot
parent eff6b884cb
commit f0d680437f
1 changed files with 3 additions and 4 deletions
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7
src/asahi/vulkan/hk_cmd_draw.c
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@ -3077,12 +3077,11 @@ hk_needs_index_robustness(struct hk_cmd_buffer *cmd, struct agx_draw *draw)
gfx->shaders[MESA_SHADER_TESS_EVAL])
return false;
/* Soft fault does not cover the hardware index buffer fetch. So we can't
* simply use index buffers. However, we can use our 16-byte zero sink
* instead, using the hardware clamp. This does seem to work.
/* Soft fault does not cover the hardware index buffer fetch, use the zero
* page instead.
*/
if (draw->index_buffer_range_B == 0) {
draw->index_buffer = dev->rodata.zero_sink;
draw->index_buffer = AGX_ZERO_PAGE_ADDRESS;
draw->index_buffer_range_B = 4;
draw->start = 0;
return false;