134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*
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* Copyright © 2022 Imagination Technologies Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* 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 THE
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* 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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include "rogue_shader.h"
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#include "rogue_instr.h"
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#include "rogue_regalloc.h"
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#include "rogue_util.h"
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#include "util/ralloc.h"
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/**
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* \file rogue_shader.c
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*
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* \brief Contains functions to manipulate Rogue shaders.
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*/
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/**
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* \brief Counts how many times an instruction is used in a shader.
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*
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* \param[in] shader The shader containing instructions to count.
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* \param[in] opcode The opcode of the instruction to be counted.
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* \return The number of times "opcode" is present, or 0 on error.
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*/
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size_t rogue_shader_instr_count_type(const struct rogue_shader *shader,
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enum rogue_opcode opcode)
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{
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size_t count = 0U;
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ASSERT_OPCODE_RANGE(opcode);
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foreach_instr (instr, &shader->instr_list)
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if (instr->opcode == opcode)
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++count;
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return count;
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}
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/**
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* \brief Allocates and sets up a Rogue shader.
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*
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* \param[in] stage The shader stage.
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* \return A rogue_shader* if successful, or NULL if unsuccessful.
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*/
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struct rogue_shader *rogue_shader_create(struct rogue_build_ctx *ctx,
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gl_shader_stage stage)
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{
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struct rogue_shader *shader;
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if (!ctx)
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return NULL;
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shader = rzalloc_size(ctx, sizeof(*shader));
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if (!shader)
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return NULL;
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shader->stage = stage;
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list_inithead(&shader->instr_list);
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shader->ctx = ctx;
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shader->ra = rogue_ra_init(shader);
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if (!shader->ra) {
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ralloc_free(shader);
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return NULL;
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}
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return shader;
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}
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/**
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* \brief Creates an instruction and appends it to a Rogue shader.
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*
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* \param[in] shader The shader.
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* \param[in] opcode The instruction opcode.
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* \return A rogue_instr* if successful, or NULL if unsuccessful.
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*/
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struct rogue_instr *rogue_shader_insert(struct rogue_shader *shader,
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enum rogue_opcode opcode)
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{
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struct rogue_instr *instr = rogue_instr_create(shader, opcode);
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if (!instr)
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return NULL;
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list_addtail(&instr->node, &shader->instr_list);
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return instr;
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}
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size_t rogue_acquire_drc(struct rogue_shader *shader)
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{
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size_t drc;
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/* If both DRCs are in use, we have a problem. */
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if (shader->drc_used[0] && shader->drc_used[1])
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return SIZE_MAX;
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drc = !shader->drc_used[0] ? 0 : 1;
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shader->drc_used[drc] = true;
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return drc;
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}
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void rogue_release_drc(struct rogue_shader *shader, size_t drc)
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{
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assert(drc < ROGUE_NUM_DRCS);
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assert(shader->drc_used[drc]);
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shader->drc_used[drc] = false;
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}
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