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