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c5490d0277
This currently sets the base and size of all push constants to the entire push constant block. The idea is that we'll use the base and size to eventually optimize the amount we actually push, but for now we don't do that.
77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/*
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* Copyright © 2015 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "anv_nir.h"
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struct lower_push_constants_state {
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nir_shader *shader;
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bool is_scalar;
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};
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static bool
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lower_push_constants_block(nir_block *block, void *void_state)
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{
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struct lower_push_constants_state *state = void_state;
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nir_foreach_instr(block, instr) {
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if (instr->type != nir_instr_type_intrinsic)
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continue;
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nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
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/* TODO: Handle indirect push constants */
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if (intrin->intrinsic != nir_intrinsic_load_push_constant)
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continue;
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/* This wont work for vec4 stages. */
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assert(state->is_scalar);
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assert(intrin->const_index[0] % 4 == 0);
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assert(intrin->const_index[1] == 128);
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/* We just turn them into uniform loads with the appropreate offset */
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intrin->intrinsic = nir_intrinsic_load_uniform;
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}
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return true;
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}
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void
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anv_nir_lower_push_constants(nir_shader *shader, bool is_scalar)
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{
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struct lower_push_constants_state state = {
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.shader = shader,
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.is_scalar = is_scalar,
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};
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nir_foreach_function(shader, function) {
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if (function->impl)
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nir_foreach_block(function->impl, lower_push_constants_block, &state);
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}
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assert(shader->num_uniforms % 4 == 0);
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if (is_scalar)
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shader->num_uniforms /= 4;
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else
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shader->num_uniforms = DIV_ROUND_UP(shader->num_uniforms, 16);
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}
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