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