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90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "gpu/command_buffer/client/buffer_tracker.h"
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#include "gpu/command_buffer/client/cmd_buffer_helper.h"
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#include "gpu/command_buffer/client/mapped_memory.h"
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namespace gpu {
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namespace gles2 {
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BufferTracker::BufferTracker(MappedMemoryManager* manager)
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: mapped_memory_(manager) {
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}
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BufferTracker::~BufferTracker() {
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while (!buffers_.empty()) {
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RemoveBuffer(buffers_.begin()->first);
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}
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}
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BufferTracker::Buffer* BufferTracker::CreateBuffer(
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GLuint id, GLsizeiptr size) {
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DCHECK_NE(0u, id);
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DCHECK_LE(0, size);
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int32 shm_id = -1;
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uint32 shm_offset = 0;
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void* address = NULL;
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if (size)
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address = mapped_memory_->Alloc(size, &shm_id, &shm_offset);
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Buffer* buffer = new Buffer(id, size, shm_id, shm_offset, address);
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std::pair<BufferMap::iterator, bool> result =
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buffers_.insert(std::make_pair(id, buffer));
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DCHECK(result.second);
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return buffer;
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}
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BufferTracker::Buffer* BufferTracker::GetBuffer(GLuint client_id) {
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BufferMap::iterator it = buffers_.find(client_id);
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return it != buffers_.end() ? it->second : NULL;
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}
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void BufferTracker::RemoveBuffer(GLuint client_id) {
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BufferMap::iterator it = buffers_.find(client_id);
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if (it != buffers_.end()) {
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Buffer* buffer = it->second;
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buffers_.erase(it);
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if (buffer->address_)
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mapped_memory_->Free(buffer->address_);
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delete buffer;
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}
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}
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void BufferTracker::FreePendingToken(Buffer* buffer, int32 token) {
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if (buffer->address_)
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mapped_memory_->FreePendingToken(buffer->address_, token);
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buffer->size_ = 0;
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buffer->shm_id_ = 0;
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buffer->shm_offset_ = 0;
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buffer->address_ = NULL;
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buffer->last_usage_token_ = 0;
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buffer->last_async_upload_token_ = 0;
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}
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void BufferTracker::Unmanage(Buffer* buffer) {
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buffer->size_ = 0;
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buffer->shm_id_ = 0;
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buffer->shm_offset_ = 0;
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buffer->address_ = NULL;
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buffer->last_usage_token_ = 0;
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buffer->last_async_upload_token_ = 0;
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}
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void BufferTracker::Free(Buffer* buffer) {
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if (buffer->address_)
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mapped_memory_->Free(buffer->address_);
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buffer->size_ = 0;
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buffer->shm_id_ = 0;
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buffer->shm_offset_ = 0;
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buffer->address_ = NULL;
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buffer->last_usage_token_ = 0;
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buffer->last_async_upload_token_ = 0;
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}
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} // namespace gles2
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} // namespace gpu
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