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radeonsi: prevent a gfx10_ngg_calculate_subgroup_info failure for TES+NGG GS

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arb_tessellation_shader-tes-gs-max-output -small -scan 1 50 -auto -fbo
doesn't pass, but at least all shaders are compiled successfully.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5700>
This commit is contained in:
Marek Olšák 2020-06-30 16:57:23 -04:00 • committed by Marge Bot
parent 5714cd3433
commit 081691b5ae
1 changed files with 8 additions and 2 deletions
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10
src/gallium/drivers/radeonsi/si_state_shaders.c
View file

@ -2651,9 +2651,15 @@ static void *si_create_shader_selector(struct pipe_context *ctx,
sel->gs_input_verts_per_prim =
u_vertices_per_prim(sel->info.properties[TGSI_PROPERTY_GS_INPUT_PRIM]);
/* EN_MAX_VERT_OUT_PER_GS_INSTANCE does not work with tesselation. */
/* EN_MAX_VERT_OUT_PER_GS_INSTANCE does not work with tesselation so
* we can't split workgroups. Disable ngg if any of the following conditions is true:
* - num_invocations * gs_max_out_vertices > 256
* - LDS usage is too high
*/
sel->tess_turns_off_ngg = sscreen->info.chip_class >= GFX10 &&
sel->gs_num_invocations * sel->gs_max_out_vertices > 256;
(sel->gs_num_invocations * sel->gs_max_out_vertices > 256 ||
sel->gs_num_invocations * sel->gs_max_out_vertices *
(sel->info.num_outputs * 4 + 1) > 6500 /* max dw per GS primitive */);
break;
case PIPE_SHADER_TESS_CTRL: