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radv: set ZMM_TRI_EXTENT for conservative rasterization == overestimate

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Ported from PAL and recommended by HW people for correctness.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38434>
This commit is contained in:
Marek Olšák 2025-11-13 15:06:47 -05:00 • committed by Marge Bot
parent b92f7c17da
commit 482fa6818e
1 changed files with 2 additions and 1 deletions
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3
src/amd/vulkan/radv_cmd_buffer.c
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@ -12062,7 +12062,8 @@ radv_emit_msaa_state(struct radv_cmd_buffer *cmd_buffer)
!uses_inner_coverage) {
pa_sc_conservative_rast |= S_028C4C_OVER_RAST_ENABLE(1) |
S_028C4C_UNDER_RAST_SAMPLE_SELECT(pdev->info.gfx_level < GFX12) |
S_028C4C_PBB_UNCERTAINTY_REGION_ENABLE(1);
S_028C4C_PBB_UNCERTAINTY_REGION_ENABLE(1) |
S_028C4C_ZMM_TRI_EXTENT(1);
} else {
pa_sc_conservative_rast |=
S_028C4C_OVER_RAST_SAMPLE_SELECT(pdev->info.gfx_level < GFX12) | S_028C4C_UNDER_RAST_ENABLE(1);