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radv: fix NGG streamout with VS and GPL on GFX11

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With GPL it's not possible to know the primitive topology when
compiling the pre-rasterization stages. For NGG, we use the maximum
number of vertices per prim and rely on the hardware to ignore the
extra bits for points/lines.

Though, this can't work for NGG streamout because the number of
vertices per prim is used to compute a streamout offset. The only
way to solve this is to pass the number of vertices per prim through
a new user SGPR.

This fixes a bunch of streamout tests with Zink/RADV on GFX11.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21833>
This commit is contained in:
Samuel Pitoiset
2023-02-15 15:12:42 +01:00
committed by Marge Bot
parent 491887c9f2
commit d750ad19fd
8 changed files with 49 additions and 3 deletions
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src/amd/vulkan/radv_pipeline.c
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@@ -4980,6 +4980,8 @@ radv_graphics_pipeline_init(struct radv_graphics_pipeline *pipeline, struct radv
pipeline->has_streamout = pipeline->last_vgt_api_stage_locs[AC_UD_STREAMOUT_BUFFERS].sgpr_idx != -1;
pipeline->has_dynamic_samples = ps->info.user_sgprs_locs.shader_data[AC_UD_PS_NUM_SAMPLES].sgpr_idx != -1;
pipeline->has_sample_positions = ps->info.ps.needs_sample_positions;
pipeline->has_num_verts_per_prim =
pipeline->last_vgt_api_stage_locs[AC_UD_NUM_VERTS_PER_PRIM].sgpr_idx != -1;
pipeline->base.push_constant_size = pipeline_layout.push_constant_size;
pipeline->base.dynamic_offset_count = pipeline_layout.dynamic_offset_count;