android: Use hw acceleration in android_webview_shell

android_webview/native/aw_contents.cc

 // Copyright 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 "android_webview/native/aw_contents.h"
 
 #include <limits>
 
 #include "android_webview/browser/aw_browser_context.h"
 #include "android_webview/browser/aw_browser_main_parts.h"
@@ skipping 323 matching lines @@
 // static
 jint GetNativeInstanceCount(JNIEnv* env, jclass) {
   return base::subtle::NoBarrier_Load(&g_instance_count);
 }
 
 jlong AwContents::GetAwDrawGLViewContext(JNIEnv* env, jobject obj) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   return reinterpret_cast<intptr_t>(this);
 }
 
+void AwContents::DrawGLForTesting(JNIEnv* env,
+                                  jobject obj,
+                                  jint width,
+                                  jint height) {
+  AwDrawGLInfo draw_info;
+  draw_info.mode = AwDrawGLInfo::kModeDraw;

[no sievers, 2014/07/22 20:53:18]

So I think since the SurfaceView never moves (when you make it a sibling), we
wouldn't have to ever touch the transform or clip rect here.
Not sure if always using kModeDraw causes issues?

+  draw_info.is_layer = true;
+  draw_info.width = width;
+  draw_info.height = height;
+  draw_info.clip_left = 0;
+  draw_info.clip_top = 0;
+  draw_info.clip_bottom = height;
+  draw_info.clip_right = width;
+  draw_info.transform[0] = 1.0;
+  draw_info.transform[1] = 0.0;
+  draw_info.transform[2] = 0.0;
+  draw_info.transform[3] = 0.0;
+
+  draw_info.transform[4] = 0.0;
+  draw_info.transform[5] = 1.0;
+  draw_info.transform[6] = 0.0;
+  draw_info.transform[7] = 0.0;
+
+  draw_info.transform[8] = 0.0;
+  draw_info.transform[9] = 0.0;
+  draw_info.transform[10] = 1.0;
+  draw_info.transform[11] = 0.0;
+
+  draw_info.transform[12] = 0.0;
+  draw_info.transform[13] = 0.0;
+  draw_info.transform[14] = 0.0;
+  draw_info.transform[15] = 1.0;
+  DrawGL(&draw_info);
+}
+
 void AwContents::DrawGL(AwDrawGLInfo* draw_info) {
   {
     GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
     base::AutoLock lock(render_thread_lock_);
     if (renderer_manager_key_ != manager->NullKey()) {
       manager->DidDrawGL(renderer_manager_key_);
     }
   }
 
   ScopedAppGLStateRestore state_restore(
@@ skipping 486 matching lines @@
     }
   }
 }
 
 void AwContents::OnAttachedToWindow(JNIEnv* env, jobject obj, int w, int h) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   browser_view_renderer_.OnAttachedToWindow(w, h);
 }
 
 void AwContents::InitializeHardwareDrawIfNeeded() {
+  LOG(INFO) << "AwContents::InitializeHardwareDrawIfNeeded";
   GLViewRendererManager* manager = GLViewRendererManager::GetInstance();
 
   base::AutoLock lock(render_thread_lock_);
   if (renderer_manager_key_ == manager->NullKey()) {
     renderer_manager_key_ = manager->PushBack(&shared_renderer_state_);
     DeferredGpuCommandService::SetInstance();
   }
 }
 
 void AwContents::OnDetachedFromWindow(JNIEnv* env, jobject obj) {
@@ skipping 284 matching lines @@
   }
 
   browser_view_renderer_.TrimMemory(level, visible);
 }
 
 void SetShouldDownloadFavicons(JNIEnv* env, jclass jclazz) {
   g_should_download_favicons = true;
 }
 
 }  // namespace android_webview