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Unified 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: rebase Created 8 years, 1 month ago
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Index: gpu/command_buffer/client/buffer_tracker.cc
diff --git a/gpu/command_buffer/client/buffer_tracker.cc b/gpu/command_buffer/client/buffer_tracker.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3e4e087ed364e72628de47bc9d211e120ce6c4c7
--- /dev/null
+++ b/gpu/command_buffer/client/buffer_tracker.cc
@@ -0,0 +1,69 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "../client/buffer_tracker.h"
+
+#include "../client/atomicops.h"
+#include "../client/cmd_buffer_helper.h"
+#include "../client/mapped_memory.h"
+
+namespace gpu {
+namespace gles2 {
+
+BufferTracker::BufferTracker(MappedMemoryManager* manager)
+ : mapped_memory_(manager) {
+}
+
+BufferTracker::~BufferTracker() {
+ while (!buffers_.empty()) {
+ RemoveBuffer(buffers_.begin()->first);
+ }
+}
+
+BufferTracker::Buffer* BufferTracker::CreateBuffer(
+ GLuint id, GLsizeiptr size) {
+ GPU_DCHECK_NE(0u, id);
+ GPU_DCHECK_LT(0, size);
+ int32 shm_id;
+ uint32 shm_offset;
+ void* address = mapped_memory_->Alloc(size, &shm_id, &shm_offset);
+ if (!address) {
+ return NULL;
+ }
+
+ Buffer* buffer = new Buffer(id, size, shm_id, shm_offset, address);
+ std::pair<BufferMap::iterator, bool> result =
+ buffers_.insert(std::make_pair(id, buffer));
+ GPU_DCHECK(result.second);
+ return buffer;
+}
+
+BufferTracker::Buffer* BufferTracker::GetBuffer(GLuint client_id) {
+ BufferMap::iterator it = buffers_.find(client_id);
+ return it != buffers_.end() ? it->second : NULL;
+}
+
+void BufferTracker::RemoveBuffer(GLuint client_id) {
+ BufferMap::iterator it = buffers_.find(client_id);
+ if (it != buffers_.end()) {
+ Buffer* buffer = it->second;
+ buffers_.erase(it);
+ if (buffer->address_)
+ mapped_memory_->Free(buffer->address_);
+ delete buffer;
+ }
+}
+
+void BufferTracker::FreePendingToken(Buffer* buffer, int32 token) {
+ GPU_DCHECK(buffer->address_);
+ mapped_memory_->FreePendingToken(buffer->address_, token);
+ buffer->size_ = 0;
+ buffer->shm_id_ = 0;
+ buffer->shm_offset_ = 0;
+ buffer->address_ = NULL;
+}
+
+
+} // namespace gles2
+} // namespace gpu
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