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/*
* Copyright (c) 2018-2020 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
* 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 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 "arm_compute/runtime/GLES_COMPUTE/GCMemoryRegion.h"
#include "arm_compute/core/Error.h"
namespace arm_compute
{
IGCMemoryRegion::IGCMemoryRegion(size_t size)
: IMemoryRegion(size), _mapping(nullptr), _ssbo_name(0)
{
}
const GLuint &IGCMemoryRegion::gc_ssbo_name() const
{
return _ssbo_name;
}
void *IGCMemoryRegion::buffer()
{
return _mapping;
}
const void *IGCMemoryRegion::buffer() const
{
return _mapping;
}
GCBufferMemoryRegion::GCBufferMemoryRegion(size_t size)
: IGCMemoryRegion(size)
{
ARM_COMPUTE_GL_CHECK(glGenBuffers(1, &_ssbo_name));
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _ssbo_name));
ARM_COMPUTE_GL_CHECK(glBufferData(GL_SHADER_STORAGE_BUFFER, static_cast<GLsizeiptr>(size), nullptr, GL_STATIC_DRAW));
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
}
GCBufferMemoryRegion::~GCBufferMemoryRegion()
{
ARM_COMPUTE_GL_CHECK(glDeleteBuffers(1, &_ssbo_name));
}
void *GCBufferMemoryRegion::ptr()
{
return nullptr;
}
void *GCBufferMemoryRegion::map(bool blocking)
{
ARM_COMPUTE_ERROR_ON(_mapping != nullptr);
ARM_COMPUTE_UNUSED(blocking);
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _ssbo_name));
void *p = ARM_COMPUTE_GL_CHECK(glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, static_cast<GLsizeiptr>(size()), GL_MAP_READ_BIT | GL_MAP_WRITE_BIT));
_mapping = reinterpret_cast<uint8_t *>(p);
return _mapping;
}
void GCBufferMemoryRegion::unmap()
{
ARM_COMPUTE_ERROR_ON(_mapping == nullptr);
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _ssbo_name));
ARM_COMPUTE_GL_CHECK(glUnmapBuffer(GL_SHADER_STORAGE_BUFFER));
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
_mapping = nullptr;
}
std::unique_ptr<IMemoryRegion> GCBufferMemoryRegion::extract_subregion(size_t offset, size_t size)
{
ARM_COMPUTE_UNUSED(offset, size);
return nullptr;
}
} // namespace arm_compute
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