Refactor Vr activity into ChromeTabbedActivity.

chrome/browser/android/vr_shell/vr_shell_renderer.h

 // Copyright 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.
 
 #ifndef CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_RENDERER_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_RENDERER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
+#include "chrome/browser/android/vr_shell/vr_util.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr.h"
 #include "third_party/gvr-android-sdk/src/ndk-beta/include/vr/gvr/capi/include/gvr_types.h"
 
 namespace vr_shell {
 
 typedef unsigned int GLuint;
 
 enum ShaderID {
   SHADER_UNRECOGNIZED = 0,
   TEXTURE_QUAD_VERTEX_SHADER,
   TEXTURE_QUAD_FRAGMENT_SHADER,
   SHADER_ID_MAX
 };
 
 class TexturedQuadRenderer {
  public:
   TexturedQuadRenderer();
   ~TexturedQuadRenderer();
 
   // Draw the content rect in the texture quad.
-  void Draw(int texture_data_handle, const gvr::Mat4f& combined_matrix);
+  void Draw(int textureDataHandle, const gvr::Mat4f& combinedMatrix,
+            const Rectf& copyRect);
 
  private:
+  static constexpr float kHalfHeight = 0.5f;

[David Trainor- moved to gerrit, 2016/09/08 05:49:30]

Any reason we pulled these to the h file instead of anonymous namespace in cc?

[mthiesse, 2016/09/08 17:44:41]

Nope, moved back.

+  static constexpr float kHalfWidth = 0.5f;
+  static constexpr float kTextureQuadPosition[18] = {
+      -kHalfWidth, kHalfHeight,  0.0f, -kHalfWidth, -kHalfHeight, 0.0f,
+      kHalfWidth,  kHalfHeight,  0.0f, -kHalfWidth, -kHalfHeight, 0.0f,
+      kHalfWidth,  -kHalfHeight, 0.0f, kHalfWidth,  kHalfHeight,  0.0f};
+  static constexpr int kPositionDataSize = 3;
+  // Number of vertices passed to glDrawArrays().
+  static constexpr int kVerticesNumber = 6;
+
+  static constexpr float kTexturedQuadTextureCoordinates[12] =
+      makeRectangularTextureBuffer(0.0f, 1.0f, 0.0f, 1.0f);
+
+  static constexpr int kTextureCoordinateDataSize = 2;
+
   GLuint vertex_shader_handle_;
   GLuint fragment_shader_handle_;
   GLuint program_handle_;
   GLuint combined_matrix_handle_;
   GLuint texture_uniform_handle_;
+  GLuint copy_rect_uniform_handle_;
   GLuint position_handle_;
   GLuint texture_coordinate_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(TexturedQuadRenderer);
 };
 
 class VrShellRenderer {
  public:
   VrShellRenderer();
   ~VrShellRenderer();
 
   TexturedQuadRenderer* GetTexturedQuadRenderer() {
     return textured_quad_renderer_.get();
   }
 
  private:
   std::unique_ptr<TexturedQuadRenderer> textured_quad_renderer_;
+
   DISALLOW_COPY_AND_ASSIGN(VrShellRenderer);
 };
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_RENDERER_H_