Mus: Move InProcessCommandBuffer and GLInProcessContext to gpu/ipc

gpu/command_buffer/client/gl_in_process_context.cc

-// 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 "gpu/command_buffer/client/gl_in_process_context.h"
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <memory>
-#include <set>
-#include <utility>
-#include <vector>
-
-#include <GLES2/gl2.h>
-#ifndef GL_GLEXT_PROTOTYPES
-#define GL_GLEXT_PROTOTYPES 1
-#endif
-#include <GLES2/gl2ext.h>
-#include <GLES2/gl2extchromium.h>
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "gpu/command_buffer/client/gles2_cmd_helper.h"
-#include "gpu/command_buffer/client/gles2_implementation.h"
-#include "gpu/command_buffer/client/shared_memory_limits.h"
-#include "gpu/command_buffer/client/transfer_buffer.h"
-#include "gpu/command_buffer/common/command_buffer.h"
-#include "gpu/command_buffer/common/constants.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gl/gl_image.h"
-
-#if defined(OS_ANDROID)
-#include "ui/gl/android/surface_texture.h"
-#endif
-
-namespace gpu {
-
-namespace {
-
-class GLInProcessContextImpl
-    : public GLInProcessContext,
-      public base::SupportsWeakPtr<GLInProcessContextImpl> {
- public:
-  GLInProcessContextImpl();
-  ~GLInProcessContextImpl() override;
-
-  bool Initialize(scoped_refptr<gl::GLSurface> surface,
-                  bool is_offscreen,
-                  GLInProcessContext* share_context,
-                  gfx::AcceleratedWidget window,
-                  const gpu::gles2::ContextCreationAttribHelper& attribs,
-                  const scoped_refptr<InProcessCommandBuffer::Service>& service,
-                  const SharedMemoryLimits& mem_limits,
-                  GpuMemoryBufferManager* gpu_memory_buffer_manager,
-                  ImageFactory* image_factory,
-                  scoped_refptr<base::SingleThreadTaskRunner> task_runner);
-
-  // GLInProcessContext implementation:
-  gles2::GLES2Implementation* GetImplementation() override;
-  void SetLock(base::Lock* lock) override;
-
- private:
-  void Destroy();
-  void OnSignalSyncPoint(const base::Closure& callback);
-
-  std::unique_ptr<gles2::GLES2CmdHelper> gles2_helper_;
-  std::unique_ptr<TransferBuffer> transfer_buffer_;
-  std::unique_ptr<gles2::GLES2Implementation> gles2_implementation_;
-  std::unique_ptr<InProcessCommandBuffer> command_buffer_;
-
-  DISALLOW_COPY_AND_ASSIGN(GLInProcessContextImpl);
-};
-
-GLInProcessContextImpl::GLInProcessContextImpl() = default;
-
-GLInProcessContextImpl::~GLInProcessContextImpl() {
-  Destroy();
-}
-
-gles2::GLES2Implementation* GLInProcessContextImpl::GetImplementation() {
-  return gles2_implementation_.get();
-}
-
-void GLInProcessContextImpl::SetLock(base::Lock* lock) {
-  NOTREACHED();
-}
-
-bool GLInProcessContextImpl::Initialize(
-    scoped_refptr<gl::GLSurface> surface,
-    bool is_offscreen,
-    GLInProcessContext* share_context,
-    gfx::AcceleratedWidget window,
-    const gles2::ContextCreationAttribHelper& attribs,
-    const scoped_refptr<InProcessCommandBuffer::Service>& service,
-    const SharedMemoryLimits& mem_limits,
-    GpuMemoryBufferManager* gpu_memory_buffer_manager,
-    ImageFactory* image_factory,
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
-  DCHECK_GE(attribs.offscreen_framebuffer_size.width(), 0);
-  DCHECK_GE(attribs.offscreen_framebuffer_size.height(), 0);
-
-  command_buffer_.reset(new InProcessCommandBuffer(service));
-
-  scoped_refptr<gles2::ShareGroup> share_group;
-  InProcessCommandBuffer* share_command_buffer = nullptr;
-  if (share_context) {
-    GLInProcessContextImpl* impl =
-        static_cast<GLInProcessContextImpl*>(share_context);
-    share_group = impl->gles2_implementation_->share_group();
-    share_command_buffer = impl->command_buffer_.get();
-    DCHECK(share_group);
-    DCHECK(share_command_buffer);
-  }
-
-  if (!command_buffer_->Initialize(
-          surface, is_offscreen, window, attribs, share_command_buffer,
-          gpu_memory_buffer_manager, image_factory, std::move(task_runner))) {
-    DLOG(ERROR) << "Failed to initialize InProcessCommmandBuffer";
-    return false;
-  }
-
-  // Create the GLES2 helper, which writes the command buffer protocol.
-  gles2_helper_.reset(new gles2::GLES2CmdHelper(command_buffer_.get()));
-  if (!gles2_helper_->Initialize(mem_limits.command_buffer_size)) {
-    LOG(ERROR) << "Failed to initialize GLES2CmdHelper";
-    Destroy();
-    return false;
-  }
-
-  // Create a transfer buffer.
-  transfer_buffer_.reset(new TransferBuffer(gles2_helper_.get()));
-
-  // Check for consistency.
-  DCHECK(!attribs.bind_generates_resource);
-  const bool bind_generates_resource = false;
-  const bool support_client_side_arrays = false;
-
-  // Create the object exposing the OpenGL API.
-  gles2_implementation_.reset(new gles2::GLES2Implementation(
-      gles2_helper_.get(), share_group.get(), transfer_buffer_.get(),
-      bind_generates_resource, attribs.lose_context_when_out_of_memory,
-      support_client_side_arrays, command_buffer_.get()));
-
-  if (!gles2_implementation_->Initialize(
-          mem_limits.start_transfer_buffer_size,
-          mem_limits.min_transfer_buffer_size,
-          mem_limits.max_transfer_buffer_size,
-          mem_limits.mapped_memory_reclaim_limit)) {
-    return false;
-  }
-
-  return true;
-}
-
-void GLInProcessContextImpl::Destroy() {
-  if (gles2_implementation_) {
-    // First flush the context to ensure that any pending frees of resources
-    // are completed. Otherwise, if this context is part of a share group,
-    // those resources might leak. Also, any remaining side effects of commands
-    // issued on this context might not be visible to other contexts in the
-    // share group.
-    gles2_implementation_->Flush();
-
-    gles2_implementation_.reset();
-  }
-
-  transfer_buffer_.reset();
-  gles2_helper_.reset();
-  command_buffer_.reset();
-}
-
-}  // anonymous namespace
-
-// static
-GLInProcessContext* GLInProcessContext::Create(
-    scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
-    scoped_refptr<gl::GLSurface> surface,
-    bool is_offscreen,
-    gfx::AcceleratedWidget window,
-    GLInProcessContext* share_context,
-    const ::gpu::gles2::ContextCreationAttribHelper& attribs,
-    const SharedMemoryLimits& memory_limits,
-    GpuMemoryBufferManager* gpu_memory_buffer_manager,
-    ImageFactory* image_factory,
-    scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
-  // If a surface is provided, we are running in a webview and should not have
-  // a task runner. We must have a task runner in all other cases.
-  DCHECK_EQ(!!surface, !task_runner);
-
-  if (surface) {
-    DCHECK_EQ(surface->IsOffscreen(), is_offscreen);
-    DCHECK_EQ(gfx::kNullAcceleratedWidget, window);
-  }
-
-  std::unique_ptr<GLInProcessContextImpl> context(new GLInProcessContextImpl);
-  if (!context->Initialize(surface, is_offscreen, share_context, window,
-                           attribs, service, memory_limits,
-                           gpu_memory_buffer_manager, image_factory,
-                           std::move(task_runner)))
-    return NULL;
-
-  return context.release();
-}
-
-}  // namespace gpu