graphics.cpp

空战游戏flacon源码

//___________________________________________________________________

#include "graphics.h"

//___________________________________________________________________


void GLGraphics::WindowMove( HWND hwnd )
{
#ifndef USE_FULLSCREEN
	if (!image) return;

	RECT	testArea;
	int		xOffset, yOffset;

	testArea.left = 0;
	testArea.right = 0;
	testArea.top = 0;
	testArea.bottom = 0;
	AdjustWindowRectEx (&testArea, GetWindowLong( hwnd, GWL_STYLE ), FALSE, NULL);
	xOffset = -testArea.left;
	yOffset = -testArea.top;
	GetWindowRect( hwnd, &testArea );
	xOffset += testArea.left;
	yOffset += testArea.top;

	image -> MoveFrontWindow( xOffset, yOffset );
#endif
}

/*
Return: 
        7 - can not setup 3dr
*/
GLint GLGraphics::Setup (HWND hwnd, GLint width, GLint height, GLint depth)
{
#ifdef	USE_FULLSCREEN
	BOOL fullscreen = TRUE;
#else
	BOOL fullscreen = FALSE;
#endif


// set up the device and image buffer
//___________________________________________________________________
	devmgr.Setup();

	int DeviceNumber = devmgr.ChooseDevice();
	device = devmgr.GetDevice( DeviceNumber, width, height, fullscreen, TRUE, hwnd );
	image = device->GetImageBuffer();

// set up 3dr
//___________________________________________________________________
	if (!context.Setup( (DWORD)image -> targetSurface(), 
						(DWORD)image -> GetDisplayDevice()->GetMPRdevice() ) ) {
		return 7;
	}
	return 0;		// successful
}

void GLGraphics::Cleanup ()
{
	context.Cleanup();
	devmgr.ReleaseDevice( device );
	devmgr.Cleanup();
}

void GLGraphics::StartFrame (GLint zflag)
{
	context.StartFrame( image -> targetSurface() );
	if (zflag) 
		context.ClearBuffers (MPR_CI_DRAW_BUFFER | MPR_CI_ZBUFFER);
	else context.ClearBuffers (MPR_CI_DRAW_BUFFER);
}

void GLGraphics::FlipBuffer ()
{
	context.FinishFrame( image -> targetSurface(), NULL);

	image -> SwapBuffers(context.rc);
}