Function doubleBufferTest

server/fakerut.cpp:281–299

Check whether double buffering works properly

// Check whether double buffering works properly
bool doubleBufferTest(void)
{
	unsigned int bgColor = 0, fgColor = 0;
	int oldReadBuf = GL_BACK, oldDrawBuf = GL_BACK;

	glGetIntegerv(GL_READ_BUFFER, &oldReadBuf);
	glGetIntegerv(GL_DRAW_BUFFER, &oldDrawBuf);
	CLEAR_BUFFER(GL_FRONT_AND_BACK, 0., 0., 0., 0.);
	CLEAR_BUFFER(GL_BACK, 1., 1., 1., 0.);
	CLEAR_BUFFER(GL_FRONT, 1., 0., 1., 0.);
	glReadBuffer(GL_BACK);
	bgColor = checkBufferColor();
	glReadBuffer(GL_FRONT);
	fgColor = checkBufferColor();
	glReadBuffer(oldReadBuf);
	glDrawBuffer(oldDrawBuf);
	if(bgColor == 0xffffff && fgColor == 0xff00ff) return true;
	return false;
}


// Check whether stereo works properly