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radv: Mitigate GPU hang on Hawaii in Dota 2 and RotTR

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Mitigate a GPU hang in Dota 2 and Rise of the Tomb Raider
by reducing the primitive rate for triangle lists.
This workaround is not documented by AMD and may not be correct.

The problem isn't well understood and needs further investigation
to narrow down what the root cause is. Until then, it's better
to give users something that works, even if not optimal.

Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37885>
This commit is contained in:
Timur Kristóf
2025-10-15 14:12:54 +02:00
committed by Marge Bot
parent 6f499141f5
commit 8ea08747b8
1 changed files with 13 additions and 2 deletions
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15
src/amd/vulkan/radv_cmd_buffer.c
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@@ -6868,8 +6868,19 @@ radv_get_ia_multi_vgt_param(struct radv_cmd_buffer *cmd_buffer, bool instanced_d
/* Hawaii hangs if instancing is enabled and WD_SWITCH_ON_EOP is 0.
* We don't know that for indirect drawing, so treat it as
* always problematic. */
if (gpu_info->family == CHIP_HAWAII && (instanced_draw || indirect_draw))
wd_switch_on_eop = true;
if (gpu_info->family == CHIP_HAWAII) {
if (instanced_draw || indirect_draw)
wd_switch_on_eop = true;
/* Mitigate a GPU hang in Dota 2 and Rise of the Tomb Raider.
* This workaround is not documented by AMD and may not be correct.
* Further investigation is necessary to understand it better.
*/
if (topology == V_008958_DI_PT_TRILIST) {
ia_switch_on_eop = true;
wd_switch_on_eop = true;
}
}
/* Performance recommendation for 4 SE Gfx7-8 parts if
* instances are smaller than a primgroup.