[SDL] SDL_BlitSurface creates "holes" instead of alpha blending

[Johannes Bauer]

David Olofson schrieb:
> On Sunday 25 November 2007, Johannes Bauer wrote:
> [...]
>> So it should blit "src" on "dst". What it outputs is:
>>
>> RGBA 44 33 22 11
>> RGBA  0  0  0  0
>>
>> This is *way* weird. Shouldn't it output something like
>> RGBA  3  2  1  0
> [...]
> 
> RGBA->RGBA blending is not supported by the SDL blitters! You'll need 
> to use custom code or some add-on library for this. IIRC, SDL will 
> just do opaque blits replacing destination A just like any other 
> channel.

Jeez, you're right.

Thanks for hitting me with the brick on the head. Sometimes I need
that... Changed the destination surface to RGB and now everything works
like a charm!

Thanks a lot,
Greetings,
Johannes

PS: I tried the Video Game Character Evaluator you've liked on your
homepage and turned out to be an Asteroid. Neat ;-)