/**
* Find the requested blitter and return his class.
* @param name the blitter to select.
* @post Sets the blitter so GetCurrentBlitter() returns it too.
*/
static Blitter *SelectBlitter(const char *name)
{
BlitterFactory *b = GetBlitterFactory(name);
if (b == nullptr) return nullptr;
Blitter *newb = b->CreateInstance();
delete *GetActiveBlitter();
*GetActiveBlitter() = newb;
DEBUG(driver, 1, "Successfully %s blitter '%s'", StrEmpty(name) ? "probed" : "loaded", newb->GetName());
return newb;
}
/**
* Find the requested blitter and return his class.
* @param name the blitter to select.
* @post Sets the blitter so GetCurrentBlitter() returns it too.
*/
static Blitter *SelectBlitter(const char *name)
{
BlitterFactory *b = GetBlitterFactory(name);
if (b == NULL) return NULL;
//用工厂生成一个Blitter
Blitter *newb = b->CreateInstance();
delete *GetActiveBlitter();
//得到的是双重地址,可以复制的.
*GetActiveBlitter() = newb;
DEBUG(driver, 1, "Successfully %s blitter '%s'", StrEmpty(name) ? "probed" : "loaded", newb->GetName());
return newb;
}
