[gl4java-usergroup] RE: gl4java-usergroup digest, Vol 1 #345 - 4 msgs

[Alban C. <aco...@mi...>]

>How can I read a transparency texture???
>I have tried to use a transparency gif, but i can't read it=2E
>when I try to use :
>	glu=2EgluBuild2DMipmaps(GL_TEXTURE_2D,
>			  	  4,
>			  	  texLoader=2EgetImageWidth(),
>			  	  texLoader=2EgetImageHeight(),
>			  	  GL_RGBA,
>			  	  GL_UNSIGNED_BYTE,
>			  	  texLoader=2EgetTexture());
>
>the browser crash=2E
>
>If I use GL_RGB, the browser don't crash=2E
>
>Somebody can say me a solution or / and an example ???
>
>are there any other file type with trasparency that gl4java can load >(jpg
>not support transparency)??
>
>Tnak you=2E

GL4java doesn't support gif images actually=2E The only file format you
"could" extract transparency is the =2Epng file format where GL4JAVA "should=
"
support loading of the alpha channel, though I can't suceed having it
working=2E

Gl4java also has a parser for =2Etga files, but it has not implemented the
loading of the alpha channel contained in this kind of files=2E

the third format supported by gl4java is jpg, but the jpg file format itself
does not have an alpha channel, so it is not possible to store transparency
information into a jpg file=2E

Regards,

Alban Cousini=E9