From a89c47415774fe9b5458a7ec7e072711e06201e6 Mon Sep 17 00:00:00 2001 From: Connor Abbott Date: Thu, 12 Nov 2015 11:40:34 +0100 Subject: nir: add a pass for lowering (un)pack_double_2x32 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit v2: Undo unintended change to the signature of nir_normalize_cubemap_coords (Iago). v3: Move to compiler/nir (Iago) v4: Remove Authors from copyright header (Michael Schellenberger) v5 (Sam): - Use nir_channel() and nir_ssa_for_alu_src() helpers (Jason) - Inline lower_double_pack_instr() code into lower_double_pack_block() (Jason). - Initialize nir_builder at lower_double_pack_impl() (Jason). Signed-off-by: Iago Toral Quiroga Signed-off-by: Samuel Iglesias Gonsálvez Reviewed-by: Jason Ekstrand --- src/compiler/Makefile.sources | 1 + src/compiler/glsl/Makefile.sources | 1 + src/compiler/nir/Makefile.sources | 1 + src/compiler/nir/nir.h | 2 + src/compiler/nir/nir_lower_double_packing.c | 95 +++++++++++++++++++++++++++++ 5 files changed, 100 insertions(+) create mode 100644 src/compiler/nir/nir_lower_double_packing.c (limited to 'src') diff --git a/src/compiler/Makefile.sources b/src/compiler/Makefile.sources index b24332807df..6f09abf3d5c 100644 --- a/src/compiler/Makefile.sources +++ b/src/compiler/Makefile.sources @@ -187,6 +187,7 @@ NIR_FILES = \ nir/nir_lower_alu_to_scalar.c \ nir/nir_lower_atomics.c \ nir/nir_lower_clip.c \ + nir/nir_lower_double_packing.c \ nir/nir_lower_global_vars_to_local.c \ nir/nir_lower_gs_intrinsics.c \ nir/nir_lower_load_const_to_scalar.c \ diff --git a/src/compiler/glsl/Makefile.sources b/src/compiler/glsl/Makefile.sources index 538196a79a9..fadfab8a209 100644 --- a/src/compiler/glsl/Makefile.sources +++ b/src/compiler/glsl/Makefile.sources @@ -38,6 +38,7 @@ NIR_FILES = \ nir/nir_lower_alu_to_scalar.c \ nir/nir_lower_atomics.c \ nir/nir_lower_clip.c \ + nir/nir_lower_double_packing.c \ nir/nir_lower_global_vars_to_local.c \ nir/nir_lower_gs_intrinsics.c \ nir/nir_lower_load_const_to_scalar.c \ diff --git a/src/compiler/nir/Makefile.sources b/src/compiler/nir/Makefile.sources index c920d2ca544..ae6cddbcf6c 100644 --- a/src/compiler/nir/Makefile.sources +++ b/src/compiler/nir/Makefile.sources @@ -30,6 +30,7 @@ NIR_FILES = \ nir_lower_alu_to_scalar.c \ nir_lower_atomics.c \ nir_lower_clip.c \ + nir_lower_double_packing.c \ nir_lower_global_vars_to_local.c \ nir_lower_gs_intrinsics.c \ nir_lower_load_const_to_scalar.c \ diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index 4cc158767f0..31498241555 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -2279,6 +2279,8 @@ void nir_lower_to_source_mods(nir_shader *shader); bool nir_lower_gs_intrinsics(nir_shader *shader); +void nir_lower_double_pack(nir_shader *shader); + bool nir_normalize_cubemap_coords(nir_shader *shader); void nir_live_ssa_defs_impl(nir_function_impl *impl); diff --git a/src/compiler/nir/nir_lower_double_packing.c b/src/compiler/nir/nir_lower_double_packing.c new file mode 100644 index 00000000000..d43683d2007 --- /dev/null +++ b/src/compiler/nir/nir_lower_double_packing.c @@ -0,0 +1,95 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#include "nir.h" +#include "nir_builder.h" + +/* + * lowers: + * + * packDouble2x32(foo) -> packDouble2x32Split(foo.x, foo.y) + * unpackDouble2x32(foo) -> vec2(unpackDouble2x32_x(foo), unpackDouble2x32_y(foo)) + */ + +static nir_ssa_def * +lower_pack_double(nir_builder *b, nir_ssa_def *src) +{ + return nir_pack_double_2x32_split(b, nir_channel(b, src, 0), + nir_channel(b, src, 1)); +} + +static nir_ssa_def * +lower_unpack_double(nir_builder *b, nir_ssa_def *src) +{ + return nir_vec2(b, nir_unpack_double_2x32_split_x(b, src), + nir_unpack_double_2x32_split_y(b, src)); +} + +static bool +lower_double_pack_block(nir_block *block, void *ctx) +{ + nir_builder *b = (nir_builder *) ctx; + + nir_foreach_instr_safe(block, instr) { + if (instr->type != nir_instr_type_alu) + continue; + + nir_alu_instr *alu_instr = (nir_alu_instr *) instr; + + if (alu_instr->op != nir_op_pack_double_2x32 && + alu_instr->op != nir_op_unpack_double_2x32) + continue; + + b->cursor = nir_before_instr(&alu_instr->instr); + + nir_ssa_def *src = nir_ssa_for_alu_src(b, alu_instr, 0); + nir_ssa_def *dest = + alu_instr->op == nir_op_pack_double_2x32 ? + lower_pack_double(b, src) : + lower_unpack_double(b, src); + + nir_ssa_def_rewrite_uses(&alu_instr->dest.dest.ssa, nir_src_for_ssa(dest)); + nir_instr_remove(&alu_instr->instr); + } + + return true; +} + +static void +lower_double_pack_impl(nir_function_impl *impl) +{ + nir_builder b; + nir_builder_init(&b, impl); + nir_foreach_block(impl, lower_double_pack_block, &b); +} + +void +nir_lower_double_pack(nir_shader *shader) +{ + nir_foreach_function(shader, function) { + if (function->impl) + lower_double_pack_impl(function->impl); + } +} + -- cgit v1.2.3