diff options
| author | Marek Olšák <[email protected]> | 2017-05-23 21:52:11 +0200 |
|---|---|---|
| committer | Emil Velikov <[email protected]> | 2017-06-14 10:40:22 +0100 |
| commit | 7b10ed6a123cd6c30929649944c58e920cf01e12 (patch) | |
| tree | d48376704d4042772431609ff8a21493344c871f /src/gallium/drivers/radeonsi | |
| parent | 5a8d7ef65a0a5c6f095803941469102cdc30457b (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]>
(cherry picked from commit 6c655cfeb49a8142c44782c5164619a5860c7706)
Diffstat (limited to 'src/gallium/drivers/radeonsi')
| -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 212991d6ae0..0fb90bedf1a 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -155,8 +155,12 @@ 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)); |