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Codechange: Allow blitter factories to decide at runtime if the blitter is usable.

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This commit is contained in:
Michael Lutz 2021-01-16 16:43:40 +01:00
parent d62e302768
commit 01ef44fa4f
1 changed files with 10 additions and 1 deletions
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11
src/blitter/factory.hpp
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@ -73,6 +73,15 @@ protected:
}
}
/**
* Is the blitter usable with the current drivers and hardware config?
* @return True if the blitter can be instantiated.
*/
virtual bool IsUsable() const
{
return true;
}
public:
virtual ~BlitterFactory()
{
@ -119,7 +128,7 @@ public:
for (; it != GetBlitters().end(); it++) {
BlitterFactory *b = (*it).second;
if (strcasecmp(bname, b->name.c_str()) == 0) {
return b;
return b->IsUsable() ? b : nullptr;
}
}
return nullptr;