mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-05-21 13:18:09 +02:00
934cfc0223
This replaces all full lisence headers with SPDX identifiers and generally makes things more consistent. I've also dropped the few remaining author tags. If someone wants to know who wrote a bit of code, `git blame` is going to be way more accurate than author tags anyway. Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com> Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com> Acked-by: Boris Brezillon <boris.brezillon@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39397>
31 lines
887 B
C
31 lines
887 B
C
/*
|
|
* Copyright (C) 2021 Collabora, Ltd.
|
|
* SPDX-License-Identifier: MIT
|
|
*/
|
|
|
|
#include "compiler/nir/nir_builder.h"
|
|
#include "pan_nir.h"
|
|
|
|
/* Lower gl_HelperInvocation to (gl_SampleMaskIn == 0), this depends on
|
|
* architectural details but is more efficient than NIR's lowering.
|
|
*/
|
|
static bool
|
|
pan_lower_helper_invocation_instr(nir_builder *b, nir_intrinsic_instr *intr,
|
|
void *data)
|
|
{
|
|
if (intr->intrinsic != nir_intrinsic_load_helper_invocation)
|
|
return false;
|
|
|
|
b->cursor = nir_before_instr(&intr->instr);
|
|
|
|
nir_def *mask = nir_load_sample_mask_in(b);
|
|
nir_def_replace(&intr->def, nir_ieq_imm(b, mask, 0));
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
pan_nir_lower_helper_invocation(nir_shader *shader)
|
|
{
|
|
return nir_shader_intrinsics_pass(shader, pan_lower_helper_invocation_instr,
|
|
nir_metadata_control_flow, NULL);
|
|
}
|