[SDL] hardware alpha & colorkey support

sapsan sapsan at rv.uar.net
Wed Jan 26 13:21:12 PST 2005


sapsan wrote:

> Stephane Marchesin wrote:
>
>> sapsan wrote:
>>
>>> Stephane Marchesin wrote:
>>>
>>>> sapsan wrote:
>>>>
>>>>> There are some really annoying questions(as for game development 
>>>>> process):
>>>>> 1)" Does current SDL version has hardware alpha blitting(i mean 
>>>>> about hardware per pixel alpha support)?"; 
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> No, because of a bug in SDL.
>>>>
>>>> No backend currently has support for hardware accelerated alpha.
>>>> However, there is a fix for the bug and a backend (glSDL) that does 
>>>> hw accelerated alpha in this tarball :
>>>> http://icps.u-strasbg.fr/~marchesin/sdl/SDL12-experimental.tgz
>>>>
>>> Sorry for my english again.
>>
>>
>>
>> Hehe :) no problem, I don't think mine is perfect either.
>>
>>>
>>> Tnx, but I got error, when try to compile SDL.dll in Borland C++ 
>>> Builder 6:
>>>
>>> [Linker Error] Unresolved external '_SDL_HasMMX' referenced from 
>>> D:\PROJECTS\TOOLS\SDL\PATCH\SDL12.EXPERIMENTAL\SRC\VIDEO\SDL_BLIT_N.OBJ
>>>
>>> What I must to do? (Because I am a pure pascal programmer :()
>>
>>
>>
>> You need to add the SDL12/src/cpuinfo/SDL_cpuinfo.c to the borland C 
>> project.
>> If you do so, _please_ send the modified project files here (or to me 
>> by mail if they are too big and you have nowhere to put them). That 
>> problem affects other people so it would be nice.
>>
>> Stephane
>>
>>
>>
>>
>> _______________________________________________
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>> http://www.libsdl.org/mailman/listinfo/sdl
>>
> I am was build SDL.dll, but got the error: "The procedure entry point 
> SDL_Error could not be located in the dynamic link library SDL.dll"
> What I must to do?

sorry - not fully discription -, I am got this error, then try to launch 
some application with new SDL.dll
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