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Side by Side Diff: gpu/command_buffer/client/buffer_tracker.cc

Issue 10440019: Add support for GL_CHROMIUM_pixel_transfer_buffer_object. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Remove unnecessary change. Created 8 years, 1 month ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "../client/buffer_tracker.h"
6
7 #include "../client/atomicops.h"
8 #include "../client/cmd_buffer_helper.h"
9 #include "../client/mapped_memory.h"
10
11 namespace gpu {
12 namespace gles2 {
13
14 BufferTracker::BufferTracker(MappedMemoryManager* manager)
15 : mapped_memory_(manager) {
16 }
17
18 BufferTracker::~BufferTracker() {
19 while (!buffers_.empty()) {
20 RemoveBuffer(buffers_.begin()->first);
21 }
22 }
23
24 BufferTracker::Buffer* BufferTracker::CreateBuffer(
25 GLuint id, GLsizeiptr size) {
26 GPU_DCHECK_NE(0u, id);
27 GPU_DCHECK_LT(0, size);
28 int32 shm_id;
29 uint32 shm_offset;
30 void* address = mapped_memory_->Alloc(size, &shm_id, &shm_offset);
31 if (!address) {
32 return NULL;
33 }
34
35 Buffer* buffer = new Buffer(id, size, shm_id, shm_offset, address);
36 std::pair<BufferMap::iterator, bool> result =
37 buffers_.insert(std::make_pair(id, buffer));
38 GPU_DCHECK(result.second);
39 return buffer;
40 }
41
42 BufferTracker::Buffer* BufferTracker::GetBuffer(GLuint client_id) {
43 BufferMap::iterator it = buffers_.find(client_id);
44 return it != buffers_.end() ? it->second : NULL;
45 }
46
47 void BufferTracker::RemoveBuffer(GLuint client_id) {
48 BufferMap::iterator it = buffers_.find(client_id);
49 if (it != buffers_.end()) {
50 Buffer* buffer = it->second;
51 buffers_.erase(it);
52 if (buffer->address_)
53 mapped_memory_->Free(buffer->address_);
54 delete buffer;
55 }
56 }
57
58 void BufferTracker::FreePendingToken(Buffer* buffer, int32 token) {
59 GPU_DCHECK(buffer->address_);
60 mapped_memory_->FreePendingToken(buffer->address_, token);
61 buffer->size_ = 0;
62 buffer->shm_id_ = 0;
63 buffer->shm_offset_ = 0;
64 buffer->address_ = NULL;
65 }
66
67
68 } // namespace gles2
69 } // namespace gpu
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