[Android WebView] Implement Ubercomp for Render Thread support

android_webview/browser/browser_view_renderer.h

 // Copyright (c) 2013 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 ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_
 #define ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_
 
 #include "android_webview/browser/global_tile_manager.h"
 #include "android_webview/browser/global_tile_manager_client.h"
 #include "android_webview/browser/shared_renderer_state.h"
@@ skipping 63 matching lines @@
   // returns true. A false return value indicates nothing was or will be drawn.
   // |java_canvas| is the target of the draw. |is_hardware_canvas| indicates
   // a GL Draw maybe possible on this canvas. |scroll| if the view's current
   // scroll offset. |clip| is the canvas's clip bounds. |global_visible_rect|
   // is the intersection of the view size and the window in window coordinates.
   bool OnDraw(jobject java_canvas,
               bool is_hardware_canvas,
               const gfx::Vector2d& scroll,
               const gfx::Rect& global_visible_rect,
               const gfx::Rect& clip);
-  void DidDrawGL(const DrawGLResult& result);
+  void DidDrawGL(scoped_ptr<DrawGLResult> result);
+  void DidDrawDelegated(scoped_ptr<DrawGLResult> result);
 
   // CapturePicture API methods.
   skia::RefPtr<SkPicture> CapturePicture(int width, int height);
   void EnableOnNewPicture(bool enabled);
 
   void ClearView();
 
   // View update notifications.
   void SetIsPaused(bool paused);
   void SetViewVisibility(bool visible);
@@ skipping 51 matching lines @@
   // invalidates appropriately. If |force_invalidate| is true, then send a view
   // invalidate regardless of compositor expectation.
   void EnsureContinuousInvalidation(bool force_invalidate);
   bool DrawSWInternal(jobject java_canvas, const gfx::Rect& clip_bounds);
   bool CompositeSW(SkCanvas* canvas);
   void DidComposite(bool force_invalidate);
   scoped_ptr<base::Value> RootLayerStateAsValue(
       const gfx::Vector2dF& total_scroll_offset_dip,
       const gfx::SizeF& scrollable_size_dip);
 
+  bool OnDrawHardwareLegacy(jobject java_canvas);
+  bool OnDrawHardware(jobject java_canvas);
+  void ReturnResources();
+
   // If we call up view invalidate and OnDraw is not called before a deadline,
   // then we keep ticking the SynchronousCompositor so it can make progress.
   void FallbackTickFired();
 
   // Force invoke the compositor to run produce a 1x1 software frame that is
   // immediately discarded. This is a hack to force invoke parts of the
   // compositor that are not directly exposed here.
   void ForceFakeCompositeSW();
 
   void EnforceMemoryPolicyImmediately(
@@ skipping 16 matching lines @@
   base::WeakPtrFactory<BrowserViewRenderer> weak_factory_on_ui_thread_;
   base::WeakPtr<BrowserViewRenderer> ui_thread_weak_ptr_;
   scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
 
   bool has_compositor_;
 
   bool is_paused_;
   bool view_visible_;
   bool window_visible_;  // Only applicable if |attached_to_window_| is true.
   bool attached_to_window_;
+  bool hardware_enabled_;
   float dip_scale_;
   float page_scale_factor_;
   bool on_new_picture_enable_;
   bool clear_view_;
+  gfx::Vector2d scroll_offset_;

[mkosiba (inactive), 2014/05/19 20:01:16]

I'd prefer we call this something like last_on_draw_scroll_offset_ or have a
separate struct or something. BVR already handles scroll offset calculations so
I'd like the separation between this and the totalscrolloffset code to be as
clear as possible.

[boliu, 2014/05/19 23:13:01]

Done, changed global_visible_rect_ too

+  gfx::Rect global_visible_rect_;
 
   // When true, we should continuously invalidate and keep drawing, for example
   // to drive animation. This value is set by the compositor and should always
   // reflect the expectation of the compositor and not be reused for other
   // states.
   bool compositor_needs_continuous_invalidate_;
 
   // Used to block additional invalidates while one is already pending.
   bool block_invalidates_;
 
   // Holds a callback to FallbackTickFired while it is pending.
   base::CancelableClosure fallback_tick_;
 
   int width_;
   int height_;
 
-  DrawGLInput draw_gl_input_;
-
   // Current scroll offset in CSS pixels.
   gfx::Vector2dF scroll_offset_dip_;
 
   // Max scroll offset in CSS pixels.
   gfx::Vector2dF max_scroll_offset_dip_;
 
   // Used to prevent rounding errors from accumulating enough to generate
   // visible skew (especially noticeable when scrolling up and down in the same
   // spot over a period of time).
   gfx::Vector2dF overscroll_rounding_error_;
@@ skipping 10 matching lines @@
   // used on data that must be modified immediately instead of being posted
   // back to UI.
   base::Lock render_thread_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserViewRenderer);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_