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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 "GLLibraryLoader.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() { 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; }
SymbolLoader GetSymbolLoader() const;
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 */
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