gfx/gl/GLContextGLX.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef GLCONTEXTGLX_H_
   8 #define GLCONTEXTGLX_H_
   9
  10 #include "GLContext.h"
  11 #include "GLXLibrary.h"
  12 #include "mozilla/X11Util.h"
  13
  14 namespace mozilla {
  15 namespace gl {
  16
  17 class GLContextGLX : public GLContext {
  18  public:
  19   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextGLX, override)
  20   static already_AddRefed<GLContextGLX> CreateGLContext(
  21       const GLContextDesc&, std::shared_ptr<gfx::XlibDisplay> display,
  22       GLXDrawable drawable, GLXFBConfig cfg, Drawable ownedPixmap = X11None);
  23
  24   static bool FindVisual(Display* display, int screen, int* const out_visualId);
  25
  26   // Finds a GLXFBConfig compatible with the provided window.
  27   static bool FindFBConfigForWindow(
  28       Display* display, int screen, Window window,
  29       GLXFBConfig* const out_config, int* const out_visid, bool aWebRender);
  30
  31   virtual ~GLContextGLX();
  32
  33   GLContextType GetContextType() const override { return GLContextType::GLX; }
  34
  35   static GLContextGLX* Cast(GLContext* gl) {
  36     MOZ_ASSERT(gl->GetContextType() == GLContextType::GLX);
  37     return static_cast<GLContextGLX*>(gl);
  38   }
  39
  40   bool Init() override;
  41
  42   bool MakeCurrentImpl() const override;
  43
  44   bool IsCurrentImpl() const override;
  45
  46   Maybe<SymbolLoader> GetSymbolLoader() const override;
  47
  48   bool IsDoubleBuffered() const override;
  49
  50   bool SwapBuffers() override;
  51
  52   GLint GetBufferAge() const override;
  53
  54   void GetWSIInfo(nsCString* const out) const override;
  55
  56   // Overrides the current GLXDrawable backing the context and makes the
  57   // context current.
  58   bool OverrideDrawable(GLXDrawable drawable);
  59
  60   // Undoes the effect of a drawable override.
  61   bool RestoreDrawable();
  62
  63  private:
  64   friend class GLContextProviderGLX;
  65
  66   GLContextGLX(const GLContextDesc&, std::shared_ptr<gfx::XlibDisplay> aDisplay,
  67                GLXDrawable aDrawable, GLXContext aContext, bool aDoubleBuffered,
  68                Drawable aOwnedPixmap = X11None);
  69
  70   const GLXContext mContext;
  71   const std::shared_ptr<gfx::XlibDisplay> mDisplay;
  72   const GLXDrawable mDrawable;
  73   // The X pixmap associated with the GLX pixmap. If this is provided, then this
  74   // class assumes responsibility for freeing both. Otherwise, the user of this
  75   // class is responsibility for freeing the drawables.
  76   const Drawable mOwnedPixmap;
  77   const bool mDoubleBuffered;
  78
  79   GLXLibrary* const mGLX;
  80
  81   const bool mOwnsContext = true;
  82 };
  83
  84 }  // namespace gl
  85 }  // namespace mozilla
  86
  87 #endif  // GLCONTEXTGLX_H_