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radv: only export clip/cull distances if PS reads them

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The only exception is the GS copy shader which emits them
unconditionally.

Totals from affected shaders:
SGPRS: 71320 -> 71008 (-0.44 %)
VGPRS: 54372 -> 54240 (-0.24 %)
Code Size: 2952628 -> 2941368 (-0.38 %) bytes
Max Waves: 9689 -> 9723 (0.35 %)

This helps Dota2, Doom, GTAV and Hitman 2.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset
2019-06-26 16:35:44 +02:00
parent 1e9ccc5429
commit d5004f60be
3 changed files with 15 additions and 4 deletions
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4
src/amd/vulkan/radv_pipeline.c
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@@ -2241,10 +2241,14 @@ void radv_create_shaders(struct radv_pipeline *pipeline,
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.prim_id_input;
keys[MESA_SHADER_VERTEX].vs.export_layer_id =
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.layer_input;
keys[MESA_SHADER_VERTEX].vs.export_clip_dists =
!!pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.num_input_clips_culls;
keys[MESA_SHADER_TESS_EVAL].tes.export_prim_id =
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.prim_id_input;
keys[MESA_SHADER_TESS_EVAL].tes.export_layer_id =
pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.layer_input;
keys[MESA_SHADER_TESS_EVAL].tes.export_clip_dists =
!!pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.num_input_clips_culls;
}
if (device->physical_device->rad_info.chip_class >= GFX9 && modules[MESA_SHADER_TESS_CTRL]) {