gecko-dev/gfx/gl/WGLLibrary.h
Jeff Gilbert c845da008c Bug 1347731 - Simplify WGL initialization code. - r=daoshengmu
MozReview-Commit-ID: DpS0nkTghXD
2018-01-04 15:07:02 -08:00

118 lines
4.2 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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 "GLContextTypes.h"
#include "mozilla/UniquePtr.h"
#include <windows.h>
struct PRLibrary;
namespace mozilla {
namespace gl {
/*
struct ScopedDC
{
const HDC mDC;
ScopedDC() = delete;
virtual ~ScopedDC() = 0;
};
struct WindowDC final : public ScopedDC
{
const HWND mWindow;
WindowDC() = delete;
~WindowDC();
};
struct PBufferDC final : public ScopedDC
{
const HWND mWindow;
PBufferDC() = delete;
~PBufferDC();
};
*/
class WGLLibrary
{
public:
WGLLibrary()
: mSymbols{}
{ }
~WGLLibrary() {
Reset();
}
private:
void Reset();
public:
struct {
HGLRC (GLAPIENTRY * fCreateContext) (HDC);
BOOL (GLAPIENTRY * fDeleteContext) (HGLRC);
BOOL (GLAPIENTRY * fMakeCurrent) (HDC, HGLRC);
PROC (GLAPIENTRY * fGetProcAddress) (LPCSTR);
HGLRC (GLAPIENTRY * fGetCurrentContext) (void);
HDC (GLAPIENTRY * fGetCurrentDC) (void);
//BOOL (GLAPIENTRY * fShareLists) (HGLRC oldContext, HGLRC newContext);
HANDLE (GLAPIENTRY * fCreatePbuffer) (HDC hDC, int iPixelFormat, int iWidth,
int iHeight, const int* piAttribList);
BOOL (GLAPIENTRY * fDestroyPbuffer) (HANDLE hPbuffer);
HDC (GLAPIENTRY * fGetPbufferDC) (HANDLE hPbuffer);
int (GLAPIENTRY * fReleasePbufferDC) (HANDLE hPbuffer, HDC dc);
//BOOL (GLAPIENTRY * fBindTexImage) (HANDLE hPbuffer, int iBuffer);
//BOOL (GLAPIENTRY * fReleaseTexImage) (HANDLE hPbuffer, int iBuffer);
BOOL (GLAPIENTRY * fChoosePixelFormat) (HDC hdc, const int* piAttribIList,
const FLOAT* pfAttribFList,
UINT nMaxFormats, int* piFormats,
UINT* nNumFormats);
//BOOL (GLAPIENTRY * fGetPixelFormatAttribiv) (HDC hdc, int iPixelFormat,
// int iLayerPlane, UINT nAttributes,
// int* piAttributes, int* piValues);
const char* (GLAPIENTRY * fGetExtensionsStringARB) (HDC hdc);
HGLRC (GLAPIENTRY * fCreateContextAttribsARB) (HDC hdc, HGLRC hShareContext,
const int* attribList);
// WGL_NV_DX_interop:
BOOL (GLAPIENTRY * fDXSetResourceShareHandleNV) (void* dxObject,
HANDLE shareHandle);
HANDLE (GLAPIENTRY * fDXOpenDeviceNV) (void* dxDevice);
BOOL (GLAPIENTRY * fDXCloseDeviceNV) (HANDLE hDevice);
HANDLE (GLAPIENTRY * fDXRegisterObjectNV) (HANDLE hDevice, void* dxObject,
GLuint name, GLenum type,
GLenum access);
BOOL (GLAPIENTRY * fDXUnregisterObjectNV) (HANDLE hDevice, HANDLE hObject);
BOOL (GLAPIENTRY * fDXObjectAccessNV) (HANDLE hObject, GLenum access);
BOOL (GLAPIENTRY * fDXLockObjectsNV) (HANDLE hDevice, GLint count,
HANDLE* hObjects);
BOOL (GLAPIENTRY * fDXUnlockObjectsNV) (HANDLE hDevice, GLint count,
HANDLE* hObjects);
} mSymbols;
bool EnsureInitialized();
//UniquePtr<WindowDC> CreateDummyWindow();
HGLRC CreateContextWithFallback(HDC dc, bool tryRobustBuffers) const;
bool HasDXInterop2() const { return bool(mSymbols.fDXOpenDeviceNV); }
bool IsInitialized() const { return mInitialized; }
auto GetOGLLibrary() const { return mOGLLibrary; }
auto RootDc() const { return mRootDc; }
private:
bool mInitialized = false;
PRLibrary* mOGLLibrary;
bool mHasRobustness;
HWND mDummyWindow;
HDC mRootDc;
HGLRC mDummyGlrc;
};
// a global WGLLibrary instance
extern WGLLibrary sWGLLib;
} /* namespace gl */
} /* namespace mozilla */