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nir: Also gather decomposed primitive count

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Simple extension.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Antonino Maniscalco <antonino.maniscalco@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26056>
This commit is contained in:
Alyssa Rosenzweig 2023-08-14 16:55:21 -04:00 • committed by Marge Bot
parent b65636ca40
commit cc3f20ca6c
4 changed files with 13 additions and 2 deletions
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2
src/amd/common/ac_nir_lower_ngg.c
View file

@ -3513,7 +3513,7 @@ ac_nir_lower_ngg_gs(nir_shader *shader, const ac_nir_lower_ngg_options *options)
if (!options->can_cull) {
nir_gs_count_vertices_and_primitives(shader, state.const_out_vtxcnt,
state.const_out_prmcnt, 4u);
state.const_out_prmcnt, NULL, 4u);
state.output_compile_time_known =
state.const_out_vtxcnt[0] == shader->info.gs.vertices_out &&
state.const_out_prmcnt[0] != -1;

1
src/compiler/nir/nir.h
View file

@ -5023,6 +5023,7 @@ void nir_dump_cfg(nir_shader *shader, FILE *fp);
void nir_gs_count_vertices_and_primitives(const nir_shader *shader,
int *out_vtxcnt,
int *out_prmcnt,
int *out_decomposed_prmcnt,
unsigned num_streams);
typedef enum {

10
src/compiler/nir/nir_gs_count_vertices.c
View file

@ -56,12 +56,14 @@ void
nir_gs_count_vertices_and_primitives(const nir_shader *shader,
int *out_vtxcnt,
int *out_prmcnt,
int *out_decomposed_prmcnt,
unsigned num_streams)
{
assert(num_streams);
int vtxcnt_arr[4] = { -1, -1, -1, -1 };
int prmcnt_arr[4] = { -1, -1, -1, -1 };
int decomposed_prmcnt_arr[4] = { -1, -1, -1, -1 };
bool cnt_found[4] = { false, false, false, false };
nir_foreach_function_impl(impl, shader) {
@ -82,6 +84,7 @@ nir_gs_count_vertices_and_primitives(const nir_shader *shader,
int vtxcnt = -1;
int prmcnt = -1;
int decomposed_prmcnt = -1;
/* If the number of vertices/primitives is compile-time known, we use that,
* otherwise we leave it at -1 which means that it's unknown.
@ -90,6 +93,8 @@ nir_gs_count_vertices_and_primitives(const nir_shader *shader,
vtxcnt = nir_src_as_int(intrin->src[0]);
if (nir_src_is_const(intrin->src[1]))
prmcnt = nir_src_as_int(intrin->src[1]);
if (nir_src_is_const(intrin->src[2]))
decomposed_prmcnt = nir_src_as_int(intrin->src[2]);
/* We've found contradictory set_vertex_and_primitive_count intrinsics.
* This can happen if there are early-returns in main() and
@ -99,9 +104,12 @@ nir_gs_count_vertices_and_primitives(const nir_shader *shader,
vtxcnt = -1;
if (cnt_found[stream] && prmcnt != prmcnt_arr[stream])
prmcnt = -1;
if (cnt_found[stream] && decomposed_prmcnt != decomposed_prmcnt_arr[stream])
prmcnt = -1;
vtxcnt_arr[stream] = vtxcnt;
prmcnt_arr[stream] = prmcnt;
decomposed_prmcnt_arr[stream] = decomposed_prmcnt;
cnt_found[stream] = true;
}
}
@ -111,4 +119,6 @@ nir_gs_count_vertices_and_primitives(const nir_shader *shader,
memcpy(out_vtxcnt, vtxcnt_arr, num_streams * sizeof(int));
if (out_prmcnt)
memcpy(out_prmcnt, prmcnt_arr, num_streams * sizeof(int));
if (out_decomposed_prmcnt)
memcpy(out_decomposed_prmcnt, decomposed_prmcnt_arr, num_streams * sizeof(int));
}

2
src/intel/compiler/brw_vec4_gs_visitor.cpp
View file

@ -632,7 +632,7 @@ brw_compile_gs(const struct brw_compiler *compiler,
if (compiler->devinfo->ver >= 8)
nir_gs_count_vertices_and_primitives(
nir, &prog_data->static_vertex_count, nullptr, 1u);
nir, &prog_data->static_vertex_count, nullptr, nullptr, 1u);
if (compiler->devinfo->ver >= 7) {
if (nir->info.gs.output_primitive == MESA_PRIM_POINTS) {