79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2020, Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup gpu
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*/
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#include "gl_query.hh"
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namespace blender::gpu {
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#define QUERY_CHUNCK_LEN 256
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GLQueryPool::~GLQueryPool()
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{
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glDeleteQueries(query_ids_.size(), query_ids_.data());
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}
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void GLQueryPool::init(GPUQueryType type)
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{
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BLI_assert(initialized_ == false);
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initialized_ = true;
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type_ = type;
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gl_type_ = to_gl(type);
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query_issued_ = 0;
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}
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#if 0 /* TODO to avoid realloc of permanent query pool. */
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void GLQueryPool::reset(GPUQueryType type)
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{
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initialized_ = false;
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}
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#endif
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void GLQueryPool::begin_query()
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{
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/* TODO add assert about expected usage. */
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while (query_issued_ >= query_ids_.size()) {
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int64_t prev_size = query_ids_.size();
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query_ids_.resize(prev_size + QUERY_CHUNCK_LEN);
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glGenQueries(QUERY_CHUNCK_LEN, &query_ids_[prev_size]);
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}
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glBeginQuery(gl_type_, query_ids_[query_issued_++]);
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}
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void GLQueryPool::end_query()
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{
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/* TODO add assert about expected usage. */
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glEndQuery(gl_type_);
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}
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void GLQueryPool::get_occlusion_result(MutableSpan<uint32_t> r_values)
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{
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BLI_assert(r_values.size() == query_issued_);
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for (int i = 0; i < query_issued_; i++) {
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/* Note: This is a sync point. */
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glGetQueryObjectuiv(query_ids_[i], GL_QUERY_RESULT, &r_values[i]);
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}
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}
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} // namespace blender::gpu
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