Add generated and hand-written passthrough command handlers with stub Doers.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h

 // Copyright (c) 2016 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.
 
 // This file contains the GLES2DecoderPassthroughImpl class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_PASSTHROUGH_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_PASSTHROUGH_H_
 
+#include "base/memory/ref_counted.h"
+#include "gpu/command_buffer/common/debug_marker_manager.h"
+#include "gpu/command_buffer/common/gles2_cmd_format.h"
+#include "gpu/command_buffer/common/gles2_cmd_utils.h"
+#include "gpu/command_buffer/common/mailbox.h"
+#include "gpu/command_buffer/service/context_group.h"
+#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
+#include "gpu/command_buffer/service/image_manager.h"
+#include "gpu/command_buffer/service/logger.h"
+#include "ui/gl/gl_bindings.h"
+#include "ui/gl/gl_context.h"
+#include "ui/gl/gl_image.h"
+#include "ui/gl/gl_surface.h"
+
 namespace gpu {
-
 namespace gles2 {
 
 class ContextGroup;
-class GLES2Decoder;
-
-GLES2Decoder* CreateGLES2DecoderPassthroughImpl(ContextGroup* group);
+
+class GLES2DecoderPassthroughImpl : public GLES2Decoder {
+ public:
+  explicit GLES2DecoderPassthroughImpl(ContextGroup* group);
+  ~GLES2DecoderPassthroughImpl() override;
+
+  Error DoCommands(unsigned int num_commands,
+                   const void* buffer,
+                   int num_entries,
+                   int* entries_processed) override;
+
+  const char* GetCommandName(unsigned int command_id) const override;
+
+  bool Initialize(const scoped_refptr<gl::GLSurface>& surface,
+                  const scoped_refptr<gl::GLContext>& context,
+                  bool offscreen,
+                  const gfx::Size& offscreen_size,
+                  const DisallowedFeatures& disallowed_features,
+                  const ContextCreationAttribHelper& attrib_helper) override;
+
+  // Destroys the graphics context.
+  void Destroy(bool have_context) override;
+
+  // Set the surface associated with the default FBO.
+  void SetSurface(const scoped_refptr<gl::GLSurface>& surface) override;
+
+  // Releases the surface associated with the GL context.
+  // The decoder should not be used until a new surface is set.
+  void ReleaseSurface() override;
+
+  void TakeFrontBuffer(const Mailbox& mailbox) override;
+
+  void ReturnFrontBuffer(const Mailbox& mailbox, bool is_lost) override;
+
+  // Resize an offscreen frame buffer.
+  bool ResizeOffscreenFrameBuffer(const gfx::Size& size) override;
+
+  // Make this decoder's GL context current.
+  bool MakeCurrent() override;
+
+  // Gets the GLES2 Util which holds info.
+  GLES2Util* GetGLES2Util() override;
+
+  // Gets the associated GLContext.
+  gl::GLContext* GetGLContext() override;
+
+  // Gets the associated ContextGroup
+  ContextGroup* GetContextGroup() override;
+
+  Capabilities GetCapabilities() override;
+
+  // Restores all of the decoder GL state.
+  void RestoreState(const ContextState* prev_state) override;
+
+  // Restore States.
+  void RestoreActiveTexture() const override;
+  void RestoreAllTextureUnitBindings(
+      const ContextState* prev_state) const override;
+  void RestoreActiveTextureUnitBinding(unsigned int target) const override;
+  void RestoreBufferBindings() const override;
+  void RestoreFramebufferBindings() const override;
+  void RestoreRenderbufferBindings() override;
+  void RestoreGlobalState() const override;
+  void RestoreProgramBindings() const override;
+  void RestoreTextureState(unsigned service_id) const override;
+  void RestoreTextureUnitBindings(unsigned unit) const override;
+  void RestoreAllExternalTextureBindingsIfNeeded() override;
+
+  void ClearAllAttributes() const override;
+  void RestoreAllAttributes() const override;
+
+  void SetIgnoreCachedStateForTest(bool ignore) override;
+  void SetForceShaderNameHashingForTest(bool force) override;
+  size_t GetSavedBackTextureCountForTest() override;
+  size_t GetCreatedBackTextureCountForTest() override;
+
+  // Sets the callback for fence sync release and wait calls. The wait call
+  // returns true if the channel is still scheduled.
+  void SetFenceSyncReleaseCallback(
+      const FenceSyncReleaseCallback& callback) override;
+  void SetWaitFenceSyncCallback(const WaitFenceSyncCallback& callback) override;
+  void SetDescheduleUntilFinishedCallback(
+      const NoParamCallback& callback) override;
+  void SetRescheduleAfterFinishedCallback(
+      const NoParamCallback& callback) override;
+
+  // Gets the QueryManager for this context.
+  QueryManager* GetQueryManager() override;
+
+  // Gets the TransformFeedbackManager for this context.
+  TransformFeedbackManager* GetTransformFeedbackManager() override;
+
+  // Gets the VertexArrayManager for this context.
+  VertexArrayManager* GetVertexArrayManager() override;
+
+  // Gets the ImageManager for this context.
+  ImageManager* GetImageManager() override;
+
+  // Returns false if there are no pending queries.
+  bool HasPendingQueries() const override;
+
+  // Process any pending queries.
+  void ProcessPendingQueries(bool did_finish) override;
+
+  // Returns false if there is no idle work to be made.
+  bool HasMoreIdleWork() const override;
+
+  // Perform any idle work that needs to be made.
+  void PerformIdleWork() override;
+
+  bool GetServiceTextureId(uint32_t client_texture_id,
+                           uint32_t* service_texture_id) override;
+
+  // Provides detail about a lost context if one occurred.
+  error::ContextLostReason GetContextLostReason() override;
+
+  // Clears a level sub area of a texture
+  // Returns false if a GL error should be generated.
+  bool ClearLevel(Texture* texture,
+                  unsigned target,
+                  int level,
+                  unsigned format,
+                  unsigned type,
+                  int xoffset,
+                  int yoffset,
+                  int width,
+                  int height) override;
+
+  // Clears a level sub area of a compressed 2D texture.
+  // Returns false if a GL error should be generated.
+  bool ClearCompressedTextureLevel(Texture* texture,
+                                   unsigned target,
+                                   int level,
+                                   unsigned format,
+                                   int width,
+                                   int height) override;
+
+  // Indicates whether a given internal format is one for a compressed
+  // texture.
+  bool IsCompressedTextureFormat(unsigned format) override;
+
+  // Clears a level of a 3D texture.
+  // Returns false if a GL error should be generated.
+  bool ClearLevel3D(Texture* texture,
+                    unsigned target,
+                    int level,
+                    unsigned format,
+                    unsigned type,
+                    int width,
+                    int height,
+                    int depth) override;
+
+  ErrorState* GetErrorState() override;
+
+  void SetShaderCacheCallback(const ShaderCacheCallback& callback) override;
+
+  void WaitForReadPixels(base::Closure callback) override;
+
+  uint32_t GetTextureUploadCount() override;
+
+  base::TimeDelta GetTotalTextureUploadTime() override;
+
+  base::TimeDelta GetTotalProcessingCommandsTime() override;
+
+  void AddProcessingCommandsTime(base::TimeDelta) override;
+
+  // Returns true if the context was lost either by GL_ARB_robustness, forced
+  // context loss or command buffer parse error.
+  bool WasContextLost() const override;
+
+  // Returns true if the context was lost specifically by GL_ARB_robustness.
+  bool WasContextLostByRobustnessExtension() const override;
+
+  // Lose this context.
+  void MarkContextLost(error::ContextLostReason reason) override;
+
+  Logger* GetLogger() override;
+
+  const ContextState* GetContextState() override;
+
+ private:
+  int commands_to_process_;
+
+  DebugMarkerManager debug_marker_manager_;
+  Logger logger_;
+
+#define GLES2_CMD_OP(name) \
+  Error Handle##name(uint32_t immediate_data_size, const void* data);
+
+  GLES2_COMMAND_LIST(GLES2_CMD_OP)
+#undef GLES2_CMD_OP
+
+  using CmdHandler =
+      Error (GLES2DecoderPassthroughImpl::*)(uint32_t immediate_data_size,
+                                             const void* data);
+
+  // A struct to hold info about each command.
+  struct CommandInfo {
+    CmdHandler cmd_handler;
+    uint8_t arg_flags;   // How to handle the arguments for this scommand
+    uint8_t cmd_flags;   // How to handle this command
+    uint16_t arg_count;  // How many arguments are expected for this command.
+  };
+
+  // A table of CommandInfo for all the commands.
+  static const CommandInfo command_info[kNumCommands - kFirstGLES2Command];
+
+  // The GL context this decoder renders to on behalf of the client.
+  scoped_refptr<gl::GLSurface> surface_;
+  scoped_refptr<gl::GLContext> context_;
+
+  // Managers
+  std::unique_ptr<ImageManager> image_manager_;
+
+  // The ContextGroup for this decoder uses to track resources.
+  scoped_refptr<ContextGroup> group_;
+  scoped_refptr<FeatureInfo> feature_info_;
+
+// Include the prototypes of all the doer functions from a separate header to
+// keep this file clean.
+#include "gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h"
+};
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_PASSTHROUGH_H_