bool Device::Create(void)
{
PIXELFORMATDESCRIPTOR pixelFormatDesc;
ZeroMemory(&pixelFormatDesc, sizeof PIXELFORMATDESCRIPTOR);
pixelFormatDesc.nSize = sizeof PIXELFORMATDESCRIPTOR; // Size of this pixel format descriptor.
pixelFormatDesc.nVersion = 1; // Version number.
pixelFormatDesc.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pixelFormatDesc.iPixelType = PFD_TYPE_RGBA; // Request an RGBA format.
pixelFormatDesc.cColorBits = 24;
pixelFormatDesc.cDepthBits = 16;
pixelFormatDesc.iLayerType = PFD_MAIN_PLANE; // Main drawing layer.
_deviceContext = GetDC(_windowHandle);
int pixelFormatIdx = ChoosePixelFormat(_deviceContext, &pixelFormatDesc);
if (pixelFormatIdx == 0)
{
ReleaseDC(_windowHandle, _deviceContext);
return false;
}
if (SetPixelFormat(_deviceContext, pixelFormatIdx, &pixelFormatDesc))
{
_renderContext = wglCreateContext(_deviceContext);
if (_renderContext)
MakeCurrentContext();
else
{
ReleaseDC(_windowHandle, _deviceContext);
wglDeleteContext(_renderContext);
return false;
}
}
else
{
ReleaseDC(_windowHandle, _deviceContext);
return false;
}
_version = (const char*)glGetString(GL_VERSION);
_vendorName = (const char*)glGetString(GL_VENDOR);
_rendererName = (const char*)glGetString(GL_RENDERER);
_GLSLVersion = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
glGetIntegerv(GL_MAJOR_VERSION, &_majorVersion);
glGetIntegerv(GL_MINOR_VERSION, &_minorVersion);
// Инициализируем расширения.
InitializeExtensions();
return true;
}
bool cPBuffer::Init(unsigned int alWidth,unsigned int alHeight, cColor aCol)
{
#ifdef WIN32
unsigned int lFormatNum=0;
int lFormat=0;
mlWidth = alWidth;
mlHeight = alHeight;
HDC CurrentHdc = wglGetCurrentDC();
HGLRC CurrentGGlRc = wglGetCurrentContext();
//Set the pixel format:
wglChoosePixelFormatARB(CurrentHdc, &mvAttribFormat[0], NULL, 1, &lFormat, &lFormatNum);
if(lFormatNum==0){
Error("Couldn't find any pixel format!\n");
return false;
}
//Create the buffer
mPBuffer = wglCreatePbufferARB(CurrentHdc, lFormat, mlWidth, mlHeight, &mvAttribBuffer[0]);
if (!mPBuffer)
{
int err = GetLastError();
Error("pbuffer creation error!\n");
return false;
}
//Get the Device Context
mDeviceContext = wglGetPbufferDCARB(mPBuffer);
if(!mDeviceContext){
Error("Some DC error!\n");
}
//Get the GL Context
mGLContext = wglCreateContext(mDeviceContext);
if(!mGLContext){
Error("Some GLRC error!\n");
}
if(mbShareObjects){
if(!wglShareLists(CurrentGGlRc, mGLContext))
{
Error("Error sharing lists.\n");
}
}
//Check the real dimensions of the PBuffer
wglQueryPbufferARB(mPBuffer, WGL_PBUFFER_WIDTH_ARB, &mlWidth);
wglQueryPbufferARB(mPBuffer, WGL_PBUFFER_HEIGHT_ARB, &mlHeight);
//Init some GL stuff with the Buffer.
#ifdef WIN32
HDC OldHDC = wglGetCurrentDC();
HGLRC OldGLRC = wglGetCurrentContext();
#endif
MakeCurrentContext();
if(mbShareObjects)
{
cLowLevelGraphicsSDL* pSDLGfx = static_cast<cLowLevelGraphicsSDL*>(mpLowLevelGraphics);
pSDLGfx->SetupGL();
}
mpLowLevelGraphics->SetClearColor(aCol);
mpLowLevelGraphics->ClearScreen();
wglMakeCurrent(OldHDC,OldGLRC);
#elif defined(__linux__)
return false;
#endif
return true;
}
