ui/gl/gl_surface_wgl.h

   1 // Copyright (c) 2012 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 #ifndef UI_GL_GL_SURFACE_WGL_H_
   6 #define UI_GL_GL_SURFACE_WGL_H_
   7
   8 #include "ui/gfx/native_widget_types.h"
   9 #include "ui/gl/gl_surface.h"
  10
  11 namespace gfx {
  12
  13 // Base interface for WGL surfaces.
  14 class GL_EXPORT GLSurfaceWGL : public GLSurface {
  15  public:
  16   GLSurfaceWGL();
  17
  18   // Implement GLSurface.
  19   void* GetDisplay() override;
  20
  21   static bool InitializeOneOff();
  22   static void InitializeOneOffForTesting();
  23   static HDC GetDisplayDC();
  24
  25  protected:
  26   ~GLSurfaceWGL() override;
  27
  28  private:
  29   DISALLOW_COPY_AND_ASSIGN(GLSurfaceWGL);
  30 };
  31
  32 // A surface used to render to a view.
  33 class NativeViewGLSurfaceWGL : public GLSurfaceWGL {
  34  public:
  35   explicit NativeViewGLSurfaceWGL(gfx::AcceleratedWidget window);
  36
  37   // Implement GLSurface.
  38   bool Initialize() override;
  39   void Destroy() override;
  40   bool IsOffscreen() override;
  41   gfx::SwapResult SwapBuffers() override;
  42   gfx::Size GetSize() override;
  43   void* GetHandle() override;
  44
  45  private:
  46   ~NativeViewGLSurfaceWGL() override;
  47
  48   gfx::AcceleratedWidget window_;
  49   gfx::AcceleratedWidget child_window_;
  50   HDC device_context_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceWGL);
  53 };
  54
  55
  56 // A surface used to render to an offscreen pbuffer.
  57 class PbufferGLSurfaceWGL : public GLSurfaceWGL {
  58  public:
  59   explicit PbufferGLSurfaceWGL(const gfx::Size& size);
  60
  61   // Implement GLSurface.
  62   bool Initialize() override;
  63   void Destroy() override;
  64   bool IsOffscreen() override;
  65   gfx::SwapResult SwapBuffers() override;
  66   gfx::Size GetSize() override;
  67   void* GetHandle() override;
  68
  69  private:
  70   ~PbufferGLSurfaceWGL() override;
  71
  72   gfx::Size size_;
  73   HDC device_context_;
  74   void* pbuffer_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceWGL);
  77 };
  78
  79 }  // namespace gfx
  80
  81 #endif  // UI_GL_GL_SURFACE_WGL_H_