[GEM-dev] RGBA confusion...

[marius schebella]

hi iohannes,
not sure what exactly I should test. I would like to help you solve this 
problem, and the easiest would be if you could provide a small test 
series that includes all the things that have to be tested. I figure it 
should contain pix_image, pix_film, pix_movie. but pix movie for example 
still flickers and with pix_film I am not sure how to use it with 
pix_mask. also, do you still need testing on pix_write and pix_record? 
with/without alpha???
marius.

IOhannes m zmoelnig wrote:
> as hinted in my last email, Gem seems to have different hardcoded ideas 
> about what RGBA means (esp. on OSX)
> 
> the main confusion is about which "type" to use: 
> GL_UNSIGNED_INT_8_8_8_8_REV vs GL_UNSIGNED_INT_8_8_8_8
> the solution seems to be simple (_REV on ppc, normal on i686) but it 
> seems to be done inconsistently in the source code, thus resulting in 
> all the alpha problems marius has reported.
> 
> i have created a wiki-page that tries to explain the technical 
> implementation of Gem's standard colorspaces, which can be found at 
> http://gem.iem.at/documentation/GemWiki/ColorSpace
> 
> i have filled this page to my best knowledge, but i would be glad if 
> somebody who knows what they are doing could have a look at it and 
> confirm (or correct) everything (esp. those lines marked with "?")
> 
> fgmasdr
> IOhannes
> 
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