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radeonsi: enable NGG culling for non-monolithic TES and GS

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It doesn't enable back face culling and small line culling. Those can only
be enabled for monolithic shaders. It only enables view culling and small
triangle culling.

Doing this has these minor advantages:

1. We can enable at least some culling immediately instead of when the first
   monolithic shader finishes compilation.

2. If back face culling and clip planes are disabled, we no longer compile
   monolithic TES and GS shader variants to get only view culling and small
   triangle culling.

3. shader-db will show culling code changes for TES and GS.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32257>
This commit is contained in:
Marek Olšák 2024-11-19 11:04:39 -05:00 • committed by Marge Bot
parent d75df43b5f
commit 7e959864b2
2 changed files with 14 additions and 6 deletions
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10
src/gallium/drivers/radeonsi/si_shader.h
View file

@ -1152,7 +1152,15 @@ static inline bool si_shader_uses_discard(struct si_shader *shader)
static inline bool si_shader_culling_enabled(struct si_shader *shader)
{
return !!shader->key.ge.opt.ngg_culling;
if (shader->key.ge.opt.ngg_culling)
return true;
unsigned output_prim = si_get_output_prim_simplified(shader->selector, &shader->key);
/* This enables NGG culling for non-monolithic TES and GS. */
return shader->key.ge.as_ngg && !shader->key.ge.as_es &&
shader->selector->ngg_cull_vert_threshold == 0 &&
(output_prim == MESA_PRIM_TRIANGLES || output_prim == MESA_PRIM_LINES);
}
#ifdef __cplusplus

10
src/gallium/drivers/radeonsi/si_state_draw.cpp
View file

@ -2255,12 +2255,12 @@ static void si_draw(struct pipe_context *ctx,
if (util_prim_is_lines(sctx->current_rast_prim)) {
/* Overwrite it to mask out face cull flags. */
ngg_culling = rs->ngg_cull_flags_lines;
ngg_culling |= SI_NGG_CULL_VS_LINES;
ngg_culling = rs->ngg_cull_flags_lines |
(!HAS_TESS && !HAS_GS ? SI_NGG_CULL_VS_LINES : 0);
} else {
ngg_culling = sctx->viewport0_y_inverted ? rs->ngg_cull_flags_tris_y_inverted :
rs->ngg_cull_flags_tris;
ngg_culling |= SI_NGG_CULL_VS_TRIANGLES;
ngg_culling = (sctx->viewport0_y_inverted ? rs->ngg_cull_flags_tris_y_inverted :
rs->ngg_cull_flags_tris) |
(!HAS_TESS && !HAS_GS ? SI_NGG_CULL_VS_TRIANGLES : 0);
}
if (ngg_culling != old_ngg_culling) {