diff options
author | Jason Ekstrand <[email protected]> | 2015-10-02 16:15:51 -0700 |
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committer | Jason Ekstrand <[email protected]> | 2015-10-02 16:15:53 -0700 |
commit | b68805f83c515916d4256f3b2f1ec67a662ca953 (patch) | |
tree | eee949ba7aedfa7c87e8213f9e33d4fa7ab2bc86 /src/vulkan/anv_nir_builder.h | |
parent | c1553653a2ed4f06301a7818a1878da46f785882 (diff) |
anv: Add some NIR builder helpers
These should all eventually be up-streamed. However, since they currently
have no upstream users, they would just bitrot there. We'll keep them
local for the time being.
Diffstat (limited to 'src/vulkan/anv_nir_builder.h')
-rw-r--r-- | src/vulkan/anv_nir_builder.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/vulkan/anv_nir_builder.h b/src/vulkan/anv_nir_builder.h new file mode 100644 index 00000000000..299c8c1aad0 --- /dev/null +++ b/src/vulkan/anv_nir_builder.h @@ -0,0 +1,102 @@ +/* + * 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 "anv_nir.h" +#include "glsl/nir/nir_builder.h" +#include "util/ralloc.h" + +/* This file includes NIR helpers used by meta shaders in the Vulkan + * driver. Eventually, these will all be merged into nir_builder. + * However, for now, keeping them in their own file helps to prevent merge + * conflicts. + */ + +static inline void +nir_builder_init_simple_shader(nir_builder *b, gl_shader_stage stage) +{ + b->shader = nir_shader_create(NULL, stage, NULL); + + nir_function *func = nir_function_create(b->shader, + ralloc_strdup(b->shader, "main")); + nir_function_overload *overload = nir_function_overload_create(func); + overload->num_params = 0; + + b->impl = nir_function_impl_create(overload); + b->cursor = nir_after_cf_list(&b->impl->body); +} + +static inline void +nir_copy_var(nir_builder *build, nir_variable *dest, nir_variable *src) +{ + nir_intrinsic_instr *copy = + nir_intrinsic_instr_create(build->shader, nir_intrinsic_copy_var); + copy->variables[0] = nir_deref_var_create(copy, dest); + copy->variables[1] = nir_deref_var_create(copy, src); + nir_builder_instr_insert(build, ©->instr); +} + +static inline nir_variable * +nir_variable_create(nir_shader *shader, const char *name, + const struct glsl_type *type, nir_variable_mode mode) +{ + nir_variable *var = rzalloc(shader, nir_variable); + var->name = ralloc_strdup(var, name); + var->type = type; + var->data.mode = mode; + + if ((mode == nir_var_shader_in && shader->stage != MESA_SHADER_VERTEX) || + (mode == nir_var_shader_out && shader->stage != MESA_SHADER_FRAGMENT)) + var->data.interpolation = INTERP_QUALIFIER_SMOOTH; + + switch (var->data.mode) { + case nir_var_local: + assert(!"nir_variable_create cannot be used for local variables"); + break; + + case nir_var_global: + exec_list_push_tail(&shader->globals, &var->node); + break; + + case nir_var_shader_in: + exec_list_push_tail(&shader->inputs, &var->node); + break; + + case nir_var_shader_out: + exec_list_push_tail(&shader->outputs, &var->node); + break; + + case nir_var_uniform: + case nir_var_shader_storage: + exec_list_push_tail(&shader->uniforms, &var->node); + break; + + case nir_var_system_value: + exec_list_push_tail(&shader->system_values, &var->node); + break; + + default: + unreachable("not reached"); + } + + return var; +} |