android_webview/browser/scoped_app_gl_state_restore.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <vector>
   6
   7 #include "base/basictypes.h"
   8 #include "ui/gl/gl_bindings.h"
   9
  10 namespace gfx {
  11 class GLContext;
  12 }
  13
  14 namespace android_webview {
  15
  16 // This class is not thread safe and should only be used on the UI thread.
  17 class ScopedAppGLStateRestore {
  18  public:
  19   enum CallMode {
  20     MODE_DRAW,
  21     MODE_RESOURCE_MANAGEMENT,
  22   };
  23
  24   ScopedAppGLStateRestore(CallMode mode);
  25   ~ScopedAppGLStateRestore();
  26
  27   bool stencil_enabled() const { return stencil_test_; }
  28   GLint framebuffer_binding_ext() const { return framebuffer_binding_ext_; }
  29
  30  private:
  31   const CallMode mode_;
  32
  33   GLint pack_alignment_;
  34   GLint unpack_alignment_;
  35
  36   struct {
  37     GLint enabled;
  38     GLint size;
  39     GLint type;
  40     GLint normalized;
  41     GLint stride;
  42     GLvoid* pointer;
  43     GLint vertex_attrib_array_buffer_binding;
  44     GLfloat current_vertex_attrib[4];
  45   } vertex_attrib_[3];
  46
  47   GLint vertex_array_buffer_binding_;
  48   GLint index_array_buffer_binding_;
  49
  50   GLboolean depth_test_;
  51   GLboolean cull_face_;
  52   GLint cull_face_mode_;
  53   GLboolean color_mask_[4];
  54   GLfloat color_clear_[4];
  55   GLfloat depth_clear_;
  56   GLint current_program_;
  57   GLint depth_func_;
  58   GLboolean depth_mask_;
  59   GLfloat depth_rage_[2];
  60   GLint front_face_;
  61   GLint hint_generate_mipmap_;
  62   GLfloat line_width_;
  63   GLfloat polygon_offset_factor_;
  64   GLfloat polygon_offset_units_;
  65   GLfloat sample_coverage_value_;
  66   GLboolean sample_coverage_invert_;
  67
  68   GLboolean enable_dither_;
  69   GLboolean enable_polygon_offset_fill_;
  70   GLboolean enable_sample_alpha_to_coverage_;
  71   GLboolean enable_sample_coverage_;
  72
  73   // Not saved/restored in MODE_DRAW.
  74   GLboolean blend_enabled_;
  75   GLint blend_src_rgb_;
  76   GLint blend_src_alpha_;
  77   GLint blend_dest_rgb_;
  78   GLint blend_dest_alpha_;
  79   GLint active_texture_;
  80   GLint viewport_[4];
  81   GLboolean scissor_test_;
  82   GLint scissor_box_[4];
  83
  84   GLboolean stencil_test_;
  85   GLint stencil_func_;
  86   GLint stencil_mask_;
  87   GLint stencil_ref_;
  88
  89   GLint framebuffer_binding_ext_;
  90
  91   struct TextureBindings {
  92     GLint texture_2d;
  93     GLint texture_cube_map;
  94     GLint texture_external_oes;
  95     // TODO(boliu): TEXTURE_RECTANGLE_ARB
  96   };
  97
  98   std::vector<TextureBindings> texture_bindings_;
  99
 100   GLint vertex_array_bindings_oes_;
 101
 102   DISALLOW_COPY_AND_ASSIGN(ScopedAppGLStateRestore);
 103 };
 104
 105 }  // namespace android_webview