Revert of command_buffer_gles2: Implement EGL default Display as a global object

gpu/gles2_conform_support/egl/display.h

 // 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.
 
 #ifndef GPU_GLES2_CONFORM_SUPPORT_EGL_DISPLAY_H_
 #define GPU_GLES2_CONFORM_SUPPORT_EGL_DISPLAY_H_
 
 #include <EGL/egl.h>
 #include <stddef.h>
 #include <stdint.h>
 
-#include <vector>
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "gpu/command_buffer/client/gles2_cmd_helper.h"
+#include "gpu/command_buffer/client/gpu_control.h"
+#include "gpu/command_buffer/service/command_buffer_service.h"
+#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
+#include "gpu/command_buffer/service/gpu_scheduler.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gl/gl_context.h"
+#include "ui/gl/gl_surface.h"
 
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/synchronization/lock.h"
+namespace gpu {
+class CommandBufferService;
+class GpuControl;
+class GpuScheduler;
+class TransferBuffer;
+class TransferBufferManagerInterface;
+
+namespace gles2 {
+class GLES2CmdHelper;
+class GLES2Implementation;
+}  // namespace gles2
+}  // namespace gpu
 
 namespace egl {
 
 class Config;
-class Context;
 class Surface;
-class ThreadState;
 
-class Display {
+class Display : private gpu::GpuControl {
  public:
-  explicit Display();
-  ~Display();
+  explicit Display(EGLNativeDisplayType display_id);
+  ~Display() override;
+
+  void SetCreateOffscreen(int width, int height) {
+    create_offscreen_ = true;
+    create_offscreen_width_ = width;
+    create_offscreen_height_ = height;
+  }
 
   bool is_initialized() const { return is_initialized_; }
-
-  void ReleaseCurrentForReleaseThread(ThreadState*);
-
-  EGLBoolean Initialize(ThreadState* ts, EGLint* major, EGLint* minor);
-  EGLBoolean Terminate(ThreadState* ts);
-  const char* QueryString(ThreadState* ts, EGLint name);
+  bool Initialize();
 
   // Config routines.
-  EGLBoolean GetConfigAttrib(ThreadState* ts,
-                             EGLConfig cfg,
-                             EGLint attribute,
-                             EGLint* value);
-  EGLBoolean ChooseConfig(ThreadState* ts,
-                          const EGLint* attrib_list,
-                          EGLConfig* configs,
-                          EGLint config_size,
-                          EGLint* num_config);
-  EGLBoolean GetConfigs(ThreadState*,
-                        EGLConfig*,
-                        EGLint config_size,
-                        EGLint* num_config);
+  bool IsValidConfig(EGLConfig config);
+  bool ChooseConfigs(
+      EGLConfig* configs, EGLint config_size, EGLint* num_config);
+  bool GetConfigs(EGLConfig* configs, EGLint config_size, EGLint* num_config);
+  bool GetConfigAttrib(EGLConfig config, EGLint attribute, EGLint* value);
 
   // Surface routines.
-  static bool IsValidNativeWindow(EGLNativeWindowType);
-  EGLSurface CreatePbufferSurface(ThreadState*,
-                                  EGLConfig,
-                                  const EGLint* attrib_list);
-  EGLSurface CreateWindowSurface(ThreadState*,
-                                 EGLConfig,
+  bool IsValidNativeWindow(EGLNativeWindowType win);
+  bool IsValidSurface(EGLSurface surface);
+  EGLSurface CreateWindowSurface(EGLConfig config,
                                  EGLNativeWindowType win,
                                  const EGLint* attrib_list);
-  EGLBoolean DestroySurface(ThreadState*, EGLSurface);
-  EGLBoolean SwapBuffers(ThreadState*, EGLSurface);
+  void DestroySurface(EGLSurface surface);
+  void SwapBuffers(EGLSurface surface);
 
   // Context routines.
-  EGLContext CreateContext(ThreadState*,
-                           EGLConfig,
-                           EGLSurface share_ctx,
+  bool IsValidContext(EGLContext ctx);
+  EGLContext CreateContext(EGLConfig config,
+                           EGLContext share_ctx,
                            const EGLint* attrib_list);
-  EGLBoolean DestroyContext(ThreadState*, EGLContext);
+  void DestroyContext(EGLContext ctx);
+  bool MakeCurrent(EGLSurface draw, EGLSurface read, EGLContext ctx);
 
-  EGLBoolean ReleaseCurrent(ThreadState*);
-  EGLBoolean MakeCurrent(ThreadState*, EGLSurface, EGLSurface, EGLContext);
-
-  uint64_t GenerateFenceSyncRelease();
-  bool IsFenceSyncRelease(uint64_t release);
-  bool IsFenceSyncFlushed(uint64_t release);
-  bool IsFenceSyncFlushReceived(uint64_t release);
+  // GpuControl implementation.
+  gpu::Capabilities GetCapabilities() override;
+  int32_t CreateImage(ClientBuffer buffer,
+                      size_t width,
+                      size_t height,
+                      unsigned internalformat) override;
+  void DestroyImage(int32_t id) override;
+  int32_t CreateGpuMemoryBufferImage(size_t width,
+                                     size_t height,
+                                     unsigned internalformat,
+                                     unsigned usage) override;
+  void SignalQuery(uint32_t query, const base::Closure& callback) override;
+  void SetLock(base::Lock*) override;
+  bool IsGpuChannelLost() override;
+  void EnsureWorkVisible() override;
+  gpu::CommandBufferNamespace GetNamespaceID() const override;
+  gpu::CommandBufferId GetCommandBufferID() const override;
+  int32_t GetExtraCommandBufferData() const override;
+  uint64_t GenerateFenceSyncRelease() override;
+  bool IsFenceSyncRelease(uint64_t release) override;
+  bool IsFenceSyncFlushed(uint64_t release) override;
+  bool IsFenceSyncFlushReceived(uint64_t release) override;
+  void SignalSyncToken(const gpu::SyncToken& sync_token,
+                       const base::Closure& callback) override;
+  bool CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) override;
 
  private:
-  void InitializeConfigsIfNeeded();
-  const Config* GetConfig(EGLConfig);
-  Surface* GetSurface(EGLSurface);
-  Context* GetContext(EGLContext);
+  EGLNativeDisplayType display_id_;
 
-  base::Lock lock_;
   bool is_initialized_;
+
+  bool create_offscreen_;
+  int create_offscreen_width_;
+  int create_offscreen_height_;
   uint64_t next_fence_sync_release_;
-  std::vector<scoped_refptr<Surface>> surfaces_;
-  std::vector<scoped_refptr<Context>> contexts_;
-  scoped_ptr<Config> configs_[2];
+
+  scoped_refptr<gpu::TransferBufferManagerInterface> transfer_buffer_manager_;
+  scoped_ptr<gpu::CommandBufferService> command_buffer_;
+  scoped_ptr<gpu::GpuScheduler> gpu_scheduler_;
+  scoped_ptr<gpu::gles2::GLES2Decoder> decoder_;
+  scoped_refptr<gfx::GLContext> gl_context_;
+  scoped_refptr<gfx::GLSurface> gl_surface_;
+  scoped_ptr<gpu::gles2::GLES2CmdHelper> gles2_cmd_helper_;
+  scoped_ptr<gpu::TransferBuffer> transfer_buffer_;
+
+  // TODO(alokp): Support more than one config, surface, and context.
+  scoped_ptr<Config> config_;
+  scoped_ptr<Surface> surface_;
+  scoped_ptr<gpu::gles2::GLES2Implementation> context_;
 
   DISALLOW_COPY_AND_ASSIGN(Display);
 };
 
 }  // namespace egl
 
 #endif  // GPU_GLES2_CONFORM_SUPPORT_EGL_DISPLAY_H_