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/*
* Copyright (c) 2017 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/GCTensorAllocator.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/core/TensorInfo.h"
#include "arm_compute/runtime/GLES_COMPUTE/GCScheduler.h"
#include "support/ToolchainSupport.h"
using namespace arm_compute;
GCTensorAllocator::GCTensorAllocator()
: _gl_buffer(), _mapping(nullptr)
{
}
uint8_t *GCTensorAllocator::data()
{
return _mapping;
}
void GCTensorAllocator::allocate()
{
_gl_buffer = support::cpp14::make_unique<GLBufferWrapper>();
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _gl_buffer->_ssbo_name));
ARM_COMPUTE_GL_CHECK(glBufferData(GL_SHADER_STORAGE_BUFFER, static_cast<GLsizeiptr>(info().total_size()), nullptr, GL_STATIC_DRAW));
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
info().set_is_resizable(false);
}
void GCTensorAllocator::free()
{
_gl_buffer.reset();
info().set_is_resizable(true);
}
uint8_t *GCTensorAllocator::lock()
{
return map(true);
}
void GCTensorAllocator::unlock()
{
unmap();
}
GLuint GCTensorAllocator::get_gl_ssbo_name() const
{
return _gl_buffer->_ssbo_name;
}
uint8_t *GCTensorAllocator::map(bool blocking)
{
ARM_COMPUTE_ERROR_ON(_mapping != nullptr);
ARM_COMPUTE_UNUSED(blocking);
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _gl_buffer->_ssbo_name));
void *p = ARM_COMPUTE_GL_CHECK(glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, static_cast<GLsizeiptr>(info().total_size()), GL_MAP_READ_BIT | GL_MAP_WRITE_BIT));
_mapping = reinterpret_cast<uint8_t *>(p);
return _mapping;
}
void GCTensorAllocator::unmap()
{
ARM_COMPUTE_ERROR_ON(_mapping == nullptr);
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _gl_buffer->_ssbo_name));
ARM_COMPUTE_GL_CHECK(glUnmapBuffer(GL_SHADER_STORAGE_BUFFER));
ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
_mapping = nullptr;
}
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