diff options
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/glsl/nir/nir.h | 2 | ||||
| -rw-r--r-- | src/glsl/nir/nir_lower_system_values.c | 106 |
3 files changed, 109 insertions, 0 deletions
diff --git a/src/glsl/Makefile.sources b/src/glsl/Makefile.sources index 6e0a0f03b82..433a9cb1514 100644 --- a/src/glsl/Makefile.sources +++ b/src/glsl/Makefile.sources @@ -19,6 +19,7 @@ NIR_FILES = \ $(GLSL_SRCDIR)/nir/nir_intrinsics.c \ $(GLSL_SRCDIR)/nir/nir_intrinsics.h \ $(GLSL_SRCDIR)/nir/nir_lower_samplers.cpp \ + $(GLSL_SRCDIR)/nir/nir_lower_system_values.c \ $(GLSL_SRCDIR)/nir/nir_lower_variables_scalar.c \ $(GLSL_SRCDIR)/nir/nir_opcodes.c \ $(GLSL_SRCDIR)/nir/nir_opcodes.h \ diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h index 0595b221442..cb63a129a57 100644 --- a/src/glsl/nir/nir.h +++ b/src/glsl/nir/nir.h @@ -1259,6 +1259,8 @@ void nir_lower_samplers(nir_shader *shader, struct gl_shader_program *shader_program, struct gl_program *prog); +void nir_lower_system_values(nir_shader *shader); + #ifdef __cplusplus } /* extern "C" */ #endif diff --git a/src/glsl/nir/nir_lower_system_values.c b/src/glsl/nir/nir_lower_system_values.c new file mode 100644 index 00000000000..cbd1dace9c6 --- /dev/null +++ b/src/glsl/nir/nir_lower_system_values.c @@ -0,0 +1,106 @@ +/* + * Copyright © 2014 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. + * + * Authors: + * Connor Abbott ([email protected]) + * + */ + +#include "nir.h" + +static void +convert_instr(nir_intrinsic_instr *instr) +{ + if (instr->intrinsic != nir_intrinsic_load_var_vec1 && + instr->intrinsic != nir_intrinsic_load_var_vec2) + return; + + nir_variable *var = instr->variables[0]->var; + if (var->data.mode != nir_var_system_value) + return; + + void *mem_ctx = ralloc_parent(instr); + + nir_intrinsic_op op; + + switch (var->data.location) { + case SYSTEM_VALUE_FRONT_FACE: + op = nir_intrinsic_load_front_face; + break; + case SYSTEM_VALUE_VERTEX_ID: + op = nir_intrinsic_load_vertex_id; + break; + case SYSTEM_VALUE_INSTANCE_ID: + op = nir_intrinsic_load_instance_id; + break; + case SYSTEM_VALUE_SAMPLE_ID: + op = nir_intrinsic_load_sample_id; + break; + case SYSTEM_VALUE_SAMPLE_POS: + op = nir_intrinsic_load_sample_pos; + break; + case SYSTEM_VALUE_SAMPLE_MASK_IN: + op = nir_intrinsic_load_sample_mask_in; + break; + case SYSTEM_VALUE_INVOCATION_ID: + op = nir_intrinsic_load_invocation_id; + break; + default: + assert(0); + break; + } + + nir_intrinsic_instr *new_instr = nir_intrinsic_instr_create(mem_ctx, op); + new_instr->dest = nir_dest_copy(instr->dest, mem_ctx); + nir_instr_insert_before(&instr->instr, &new_instr->instr); + nir_instr_remove(&instr->instr); +} + +static bool +convert_block(nir_block *block, void *state) +{ + (void) state; + + nir_foreach_instr_safe(block, instr) { + if (instr->type == nir_instr_type_intrinsic) + convert_instr(nir_instr_as_intrinsic(instr)); + } + + return true; +} + +static void +convert_impl(nir_function_impl *impl) +{ + nir_foreach_block(impl, convert_block, NULL); +} + +void +nir_lower_system_values(nir_shader *shader) +{ + nir_foreach_overload(shader, overload) { + if (overload->impl) + convert_impl(overload->impl); + } + + exec_list_make_empty(&shader->system_values); +} |