/*
===================
GLimp_Init
This is the platform specific OpenGL initialization function. It
is responsible for loading OpenGL, initializing it,
creating a window of the appropriate size, doing
fullscreen manipulations, etc. Its overall responsibility is
to make sure that a functional OpenGL subsystem is operating
when it returns to the ref.
If there is any failure, the renderer will revert back to safe
parameters and try again.
===================
*/
bool GLimp_Init( glimpParms_t parms )
{
const char* driverName;
HDC hDC;
cmdSystem->AddCommand( "testSwapBuffers", GLimp_TestSwapBuffers, CMD_FL_SYSTEM, "Times swapbuffer options" );
common->Printf( "Initializing OpenGL subsystem with multisamples:%i stereo:%i fullscreen:%i\n",
parms.multiSamples, parms.stereo, parms.fullScreen );
// check our desktop attributes
hDC = GetDC( GetDesktopWindow() );
win32.desktopBitsPixel = GetDeviceCaps( hDC, BITSPIXEL );
win32.desktopWidth = GetDeviceCaps( hDC, HORZRES );
win32.desktopHeight = GetDeviceCaps( hDC, VERTRES );
ReleaseDC( GetDesktopWindow(), hDC );
// we can't run in a window unless it is 32 bpp
if( win32.desktopBitsPixel < 32 && parms.fullScreen <= 0 )
{
common->Printf( "^3Windowed mode requires 32 bit desktop depth^0\n" );
return false;
}
// save the hardware gamma so it can be
// restored on exit
GLimp_SaveGamma();
// create our window classes if we haven't already
GLW_CreateWindowClasses();
// this will load the dll and set all our qgl* function pointers,
// but doesn't create a window
// r_glDriver is only intended for using instrumented OpenGL
// dlls. Normal users should never have to use it, and it is
// not archived.
driverName = r_glDriver.GetString()[0] ? r_glDriver.GetString() : "opengl32";
if( !QGL_Init( driverName ) )
{
common->Printf( "^3GLimp_Init() could not load r_glDriver \"%s\"^0\n", driverName );
return false;
}
// getting the wgl extensions involves creating a fake window to get a context,
// which is pretty disgusting, and seems to mess with the AGP VAR allocation
GLW_GetWGLExtensionsWithFakeWindow();
// Optionally ChangeDisplaySettings to get a different fullscreen resolution.
if( !GLW_ChangeDislaySettingsIfNeeded( parms ) )
{
GLimp_Shutdown();
return false;
}
// try to create a window with the correct pixel format
// and init the renderer context
if( !GLW_CreateWindow( parms ) )
{
GLimp_Shutdown();
return false;
}
glConfig.isFullscreen = parms.fullScreen;
glConfig.isStereoPixelFormat = parms.stereo;
glConfig.nativeScreenWidth = parms.width;
glConfig.nativeScreenHeight = parms.height;
glConfig.multisamples = parms.multiSamples;
glConfig.pixelAspect = 1.0f; // FIXME: some monitor modes may be distorted
// should side-by-side stereo modes be consider aspect 0.5?
// get the screen size, which may not be reliable...
// If we use the windowDC, I get my 30" monitor, even though the window is
// on a 27" monitor, so get a dedicated DC for the full screen device name.
const idStr deviceName = GetDeviceName( Max( 0, parms.fullScreen - 1 ) );
HDC deviceDC = CreateDC( deviceName.c_str(), deviceName.c_str(), NULL, NULL );
const int mmWide = GetDeviceCaps( win32.hDC, HORZSIZE );
DeleteDC( deviceDC );
if( mmWide == 0 )
{
glConfig.physicalScreenWidthInCentimeters = 100.0f;
}
else
{
glConfig.physicalScreenWidthInCentimeters = 0.1f * mmWide;
}
// wglSwapinterval, etc
GLW_CheckWGLExtensions( win32.hDC );
// check logging
GLimp_EnableLogging( ( r_logFile.GetInteger() != 0 ) );
return true;
}
/*
===================
GLimp_Init
This is the platform specific OpenGL initialization function. It
is responsible for loading OpenGL, initializing it,
creating a window of the appropriate size, doing
fullscreen manipulations, etc. Its overall responsibility is
to make sure that a functional OpenGL subsystem is operating
when it returns to the ref.
If there is any failure, the renderer will revert back to safe
parameters and try again.
===================
*/
bool GLimp_Init( glimpParms_t parms ) {
const char *driverName;
HDC hDC;
common->Printf( "Initializing OpenGL subsystem\n" );
// check our desktop attributes
hDC = GetDC( GetDesktopWindow() );
win32.desktopBitsPixel = GetDeviceCaps( hDC, BITSPIXEL );
win32.desktopWidth = GetDeviceCaps( hDC, HORZRES );
win32.desktopHeight = GetDeviceCaps( hDC, VERTRES );
ReleaseDC( GetDesktopWindow(), hDC );
// we can't run in a window unless it is 32 bpp
if ( win32.desktopBitsPixel < 32 && !parms.fullScreen ) {
common->Printf("^3Windowed mode requires 32 bit desktop depth^0\n");
return false;
}
// save the hardware gamma so it can be
// restored on exit
GLimp_SaveGamma();
// create our window classes if we haven't already
GLW_CreateWindowClasses();
// this will load the dll and set all our qgl* function pointers,
// but doesn't create a window
// r_glDriver is only intended for using instrumented OpenGL
// dlls. Normal users should never have to use it, and it is
// not archived.
driverName = r_glDriver.GetString()[0] ? r_glDriver.GetString() : "opengl32";
if ( !QGL_Init( driverName ) ) {
common->Printf( "^3GLimp_Init() could not load r_glDriver \"%s\"^0\n", driverName );
return false;
}
// getting the wgl extensions involves creating a fake window to get a context,
// which is pretty disgusting, and seems to mess with the AGP VAR allocation
GLW_GetWGLExtensionsWithFakeWindow();
// try to change to fullscreen
if ( parms.fullScreen ) {
if ( !GLW_SetFullScreen( parms ) ) {
GLimp_Shutdown();
return false;
}
}
// try to create a window with the correct pixel format
// and init the renderer context
if ( !GLW_CreateWindow( parms ) ) {
GLimp_Shutdown();
return false;
}
// wglSwapinterval, etc
GLW_CheckWGLExtensions( win32.hDC );
// check logging
GLimp_EnableLogging( ( r_logFile.GetInteger() != 0 ) );
return true;
}
