gecko/gfx/gl/WGLLibrary.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2012-05-21 04:12:37 -07:00
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GLContext.h"
namespace mozilla {
namespace gl {
class WGLLibrary
{
public:
WGLLibrary()
: mInitialized(false),
mOGLLibrary(nullptr),
mHasRobustness(false),
mWindow (0),
mWindowDC(0),
mWindowGLContext(0),
mWindowPixelFormat (0),
mUseDoubleBufferedWindows(false),
mLibType(OPENGL_LIB)
{}
enum LibraryType
{
OPENGL_LIB = 0,
MESA_LLVMPIPE_LIB = 1,
LIBS_MAX
};
typedef HGLRC (GLAPIENTRY * PFNWGLCREATECONTEXTPROC) (HDC);
PFNWGLCREATECONTEXTPROC fCreateContext;
typedef BOOL (GLAPIENTRY * PFNWGLDELETECONTEXTPROC) (HGLRC);
PFNWGLDELETECONTEXTPROC fDeleteContext;
typedef BOOL (GLAPIENTRY * PFNWGLMAKECURRENTPROC) (HDC, HGLRC);
PFNWGLMAKECURRENTPROC fMakeCurrent;
typedef PROC (GLAPIENTRY * PFNWGLGETPROCADDRESSPROC) (LPCSTR);
PFNWGLGETPROCADDRESSPROC fGetProcAddress;
typedef HGLRC (GLAPIENTRY * PFNWGLGETCURRENTCONTEXT) (void);
PFNWGLGETCURRENTCONTEXT fGetCurrentContext;
typedef HDC (GLAPIENTRY * PFNWGLGETCURRENTDC) (void);
PFNWGLGETCURRENTDC fGetCurrentDC;
typedef BOOL (GLAPIENTRY * PFNWGLSHARELISTS) (HGLRC oldContext, HGLRC newContext);
PFNWGLSHARELISTS fShareLists;
typedef HANDLE (WINAPI * PFNWGLCREATEPBUFFERPROC) (HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int* piAttribList);
PFNWGLCREATEPBUFFERPROC fCreatePbuffer;
typedef BOOL (WINAPI * PFNWGLDESTROYPBUFFERPROC) (HANDLE hPbuffer);
PFNWGLDESTROYPBUFFERPROC fDestroyPbuffer;
typedef HDC (WINAPI * PFNWGLGETPBUFFERDCPROC) (HANDLE hPbuffer);
PFNWGLGETPBUFFERDCPROC fGetPbufferDC;
typedef BOOL (WINAPI * PFNWGLBINDTEXIMAGEPROC) (HANDLE hPbuffer, int iBuffer);
PFNWGLBINDTEXIMAGEPROC fBindTexImage;
typedef BOOL (WINAPI * PFNWGLRELEASETEXIMAGEPROC) (HANDLE hPbuffer, int iBuffer);
PFNWGLRELEASETEXIMAGEPROC fReleaseTexImage;
typedef BOOL (WINAPI * PFNWGLCHOOSEPIXELFORMATPROC) (HDC hdc, const int* piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
PFNWGLCHOOSEPIXELFORMATPROC fChoosePixelFormat;
typedef BOOL (WINAPI * PFNWGLGETPIXELFORMATATTRIBIVPROC) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, int* piAttributes, int *piValues);
PFNWGLGETPIXELFORMATATTRIBIVPROC fGetPixelFormatAttribiv;
typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGPROC) (HDC hdc);
PFNWGLGETEXTENSIONSSTRINGPROC fGetExtensionsString;
typedef HGLRC (WINAPI * PFNWGLCREATECONTEXTATTRIBSPROC) (HDC hdc, HGLRC hShareContext, const int *attribList);
PFNWGLCREATECONTEXTATTRIBSPROC fCreateContextAttribs;
bool EnsureInitialized(bool aUseMesaLlvmPipe);
HWND CreateDummyWindow(HDC *aWindowDC = nullptr);
bool HasRobustness() const { return mHasRobustness; }
bool IsInitialized() const { return mInitialized; }
HWND GetWindow() const { return mWindow; }
HDC GetWindowDC() const {return mWindowDC; }
HGLRC GetWindowGLContext() const {return mWindowGLContext; }
int GetWindowPixelFormat() const { return mWindowPixelFormat; }
bool UseDoubleBufferedWindows() const { return mUseDoubleBufferedWindows; }
LibraryType GetLibraryType() const { return mLibType; }
static LibraryType SelectLibrary(const GLContext::ContextFlags& aFlags);
private:
bool mInitialized;
PRLibrary *mOGLLibrary;
bool mHasRobustness;
HWND mWindow;
HDC mWindowDC;
HGLRC mWindowGLContext;
int mWindowPixelFormat;
bool mUseDoubleBufferedWindows;
LibraryType mLibType;
};
// a global WGLLibrary instance
extern WGLLibrary sWGLLibrary[WGLLibrary::LIBS_MAX];
} /* namespace gl */
} /* namespace mozilla */