diff options
| author | Marek Olšák <[email protected]> | 2017-05-23 21:52:11 +0200 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2017-06-06 13:01:52 +0200 |
| commit | 6c655cfeb49a8142c44782c5164619a5860c7706 (patch) | |
| tree | d1517193f40cd5a32b9d9886be187e76bd2490ea | |
| parent | b9f9bad4ebbf534a839ef539d75bfaabee6e0c42 (diff) | |
radeonsi: fix a GPU hang with tessellation on 2-CU configs
Only harvested Stoney has 2 CUs. Tested on 2-CU Stoney and Fiji forced
to 2 CUs.
Cc: 17.0 17.1 <[email protected]>
Tested-by: Edmondo Tommasina <[email protected]>
Tested-by: Dieter Nützel <[email protected]>
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index 8651592fed2..77df64397f9 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -169,8 +169,12 @@ static void si_emit_derived_tess_state(struct si_context *sctx, /* Make sure that the data fits in LDS. This assumes the shaders only * use LDS for the inputs and outputs. + * + * While CIK can use 64K per threadgroup, there is a hang on Stoney + * with 2 CUs if we use more than 32K. The closed Vulkan driver also + * uses 32K at most on all GCN chips. */ - hardware_lds_size = sctx->b.chip_class >= CIK ? 65536 : 32768; + hardware_lds_size = 32768; *num_patches = MIN2(*num_patches, hardware_lds_size / (input_patch_size + output_patch_size)); |