diff options
| -rw-r--r-- | src/compiler/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/compiler/nir/nir.h | 1 | ||||
| -rw-r--r-- | src/compiler/nir/nir_lower_patch_vertices.c | 53 |
3 files changed, 55 insertions, 0 deletions
diff --git a/src/compiler/Makefile.sources b/src/compiler/Makefile.sources index 52f6e5428f4..7479afae047 100644 --- a/src/compiler/Makefile.sources +++ b/src/compiler/Makefile.sources @@ -218,6 +218,7 @@ NIR_FILES = \ nir/nir_lower_io_to_scalar.c \ nir/nir_lower_io_types.c \ nir/nir_lower_passthrough_edgeflags.c \ + nir/nir_lower_patch_vertices.c \ nir/nir_lower_phis_to_scalar.c \ nir/nir_lower_regs_to_ssa.c \ nir/nir_lower_returns.c \ diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index c9226e94dd2..66cb36526bf 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -2490,6 +2490,7 @@ void nir_lower_two_sided_color(nir_shader *shader); void nir_lower_clamp_color_outputs(nir_shader *shader); void nir_lower_passthrough_edgeflags(nir_shader *shader); +void nir_lower_tes_patch_vertices(nir_shader *tes, unsigned patch_vertices); typedef struct nir_lower_wpos_ytransform_options { int state_tokens[5]; diff --git a/src/compiler/nir/nir_lower_patch_vertices.c b/src/compiler/nir/nir_lower_patch_vertices.c new file mode 100644 index 00000000000..d196576b993 --- /dev/null +++ b/src/compiler/nir/nir_lower_patch_vertices.c @@ -0,0 +1,53 @@ +/* + * Copyright © 2016 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_builder.h" + +void +nir_lower_tes_patch_vertices(nir_shader *tes_nir, unsigned patch_vertices) +{ + nir_foreach_function(function, tes_nir) { + if (function->impl) { + nir_foreach_block(block, function->impl) { + nir_builder b; + nir_builder_init(&b, function->impl); + nir_foreach_instr_safe(instr, block) { + if (instr->type == nir_instr_type_intrinsic) { + nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr); + if (intr->intrinsic != nir_intrinsic_load_patch_vertices_in) + continue; + + b.cursor = nir_before_instr(&intr->instr); + nir_ssa_def *val = nir_imm_int(&b, patch_vertices); + nir_ssa_def_rewrite_uses(&intr->dest.ssa, + nir_src_for_ssa(val)); + nir_instr_remove(instr); + } + } + } + + nir_metadata_preserve(function->impl, nir_metadata_block_index | + nir_metadata_dominance); + } + } +} |