diff options
Diffstat (limited to 'src/compiler')
| -rw-r--r-- | src/compiler/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/compiler/nir/meson.build | 1 | ||||
| -rw-r--r-- | src/compiler/nir/nir_format_convert.h | 106 |
3 files changed, 108 insertions, 0 deletions
diff --git a/src/compiler/Makefile.sources b/src/compiler/Makefile.sources index 80a61e507b2..3daa2c51334 100644 --- a/src/compiler/Makefile.sources +++ b/src/compiler/Makefile.sources @@ -202,6 +202,7 @@ NIR_FILES = \ nir/nir_control_flow.h \ nir/nir_control_flow_private.h \ nir/nir_dominance.c \ + nir/nir_format_convert.h \ nir/nir_from_ssa.c \ nir/nir_gather_info.c \ nir/nir_gs_count_vertices.c \ diff --git a/src/compiler/nir/meson.build b/src/compiler/nir/meson.build index f5a4affc893..3fec363691d 100644 --- a/src/compiler/nir/meson.build +++ b/src/compiler/nir/meson.build @@ -93,6 +93,7 @@ files_libnir = files( 'nir_control_flow.h', 'nir_control_flow_private.h', 'nir_dominance.c', + 'nir_format_convert.h', 'nir_from_ssa.c', 'nir_gather_info.c', 'nir_gs_count_vertices.c', diff --git a/src/compiler/nir/nir_format_convert.h b/src/compiler/nir/nir_format_convert.h new file mode 100644 index 00000000000..e09c955f8c8 --- /dev/null +++ b/src/compiler/nir/nir_format_convert.h @@ -0,0 +1,106 @@ +/* + * Copyright © 2017 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" + +static inline nir_ssa_def * +nir_shift(nir_builder *b, nir_ssa_def *value, int left_shift) +{ + if (left_shift > 0) + return nir_ishl(b, value, nir_imm_int(b, left_shift)); + else if (left_shift < 0) + return nir_ushr(b, value, nir_imm_int(b, -left_shift)); + else + return value; +} + +static inline nir_ssa_def * +nir_mask_shift(struct nir_builder *b, nir_ssa_def *src, + uint32_t mask, int left_shift) +{ + return nir_shift(b, nir_iand(b, src, nir_imm_int(b, mask)), left_shift); +} + +static inline nir_ssa_def * +nir_mask_shift_or(struct nir_builder *b, nir_ssa_def *dst, nir_ssa_def *src, + uint32_t src_mask, int src_left_shift) +{ + return nir_ior(b, nir_mask_shift(b, src, src_mask, src_left_shift), dst); +} + +static inline nir_ssa_def * +nir_format_unpack_uint(nir_builder *b, nir_ssa_def *packed, + const unsigned *bits, unsigned num_components) +{ + assert(num_components >= 1 && num_components <= 4); + nir_ssa_def *comps[4]; + + if (bits[0] >= packed->bit_size) { + assert(bits[0] == packed->bit_size); + assert(num_components == 1); + return packed; + } + + unsigned offset = 0; + for (unsigned i = 0; i < num_components; i++) { + assert(bits[i] < 32); + nir_ssa_def *mask = nir_imm_int(b, (1u << bits[i]) - 1); + comps[i] = nir_iand(b, nir_shift(b, packed, -offset), mask); + offset += bits[i]; + } + assert(offset <= packed->bit_size); + + return nir_vec(b, comps, num_components); +} + +static inline nir_ssa_def * +nir_format_pack_uint_unmasked(nir_builder *b, nir_ssa_def *color, + const unsigned *bits, unsigned num_components) +{ + assert(num_components >= 1 && num_components <= 4); + nir_ssa_def *packed = nir_imm_int(b, 0); + unsigned offset = 0; + for (unsigned i = 0; i < num_components; i++) { + packed = nir_ior(b, packed, nir_shift(b, nir_channel(b, color, i), + offset)); + offset += bits[i]; + } + assert(offset <= packed->bit_size); + + return packed; +} + +static inline nir_ssa_def * +nir_format_pack_uint(nir_builder *b, nir_ssa_def *color, + const unsigned *bits, unsigned num_components) +{ + nir_const_value mask; + for (unsigned i = 0; i < num_components; i++) { + assert(bits[i] < 32); + mask.u32[i] = (1u << bits[i]) - 1; + } + nir_ssa_def *mask_imm = nir_build_imm(b, num_components, 32, mask); + + return nir_format_pack_uint_unmasked(b, nir_iand(b, color, mask_imm), + bits, num_components); +} |