WinBaseLib/WGL.cpp

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#include "WGL.h"


#ifdef  ENABLE_OPENGL

using namespace jbxl;
using namespace jbxwl;



/*
    機能：
    引数：
    戻値：
    説明：
*/
HGLRC  jbxwl::WGLCreateContext(CDC* pDC, PIXELFORMATDESCRIPTOR* param)
{
    HGLRC hrc = NULL;
    BOOL  ret = FALSE;

    //
    int pixelformat = ::ChoosePixelFormat(pDC->GetSafeHdc(), param);
    if (pixelformat) ret = ::SetPixelFormat(pDC->GetSafeHdc(), pixelformat, param);

    if (ret) {
        hrc = ::wglCreateContext(pDC->GetSafeHdc());
        if (hrc) {
            ret = ::wglMakeCurrent(pDC->GetSafeHdc(), hrc);
            if (!ret) {
                ::wglDeleteContext(hrc);
                hrc = NULL;
            }
        }
    }
    return hrc;
}




BOOL  jbxwl::WGLGetCurrent(CDC* pDC, HGLRC hrc)
{
    return ::wglMakeCurrent(pDC->GetSafeHdc(), hrc);
}





void  jbxwl::WGLDeleteContext(HGLRC hrc)
{
    ::wglMakeCurrent(NULL, NULL);
    ::wglDeleteContext(hrc);
}



#endif          // ENABLE_OPENGL

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