iR vs O2 textures

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Svend Tang-Petersen (svend++at++digi.lego.com)
Tue, 06 Jan 1998 19:29:30 +0100

Hi Performers.

I'm doing some development using Performer-2.1 on my O2 and Onyx2
InfiniteReality.

I've noticed a difference in the appeareance of textures on the two
graphics systems. On the O2 they
look fine, but on iR I get banding. i.e. the texture(s) look like it's
only 4 bit components and not 8.

I'm probably missing something when I load the textures or set the
texture environment:

 tev = new pfTexEnv();
 tev->setMode( PFTE_MODULATE );

 crystal_texture = new pfTexture;
 crystal_texture->setFormat( PFTEX_INTERNAL_FORMAT, PFTEX_RGBA_8 );
 crystal_texture->loadFile( "flare1.rgb" );
 crystal_texture->setRepeat( PFTEX_WRAP_S, PFTEX_CLAMP );
 crystal_texture->setRepeat( PFTEX_WRAP_T, PFTEX_CLAMP );

I'm using a pure white and no alpha on the polygon. Is there some
difference in the default
Performer/OpenGL settings.

--


 Svend Tang-Petersen, MSc


 LEGO
 Kloevermarken 120
 7190 Billund
 Denmark


 e-mail: svend++at++digi.lego.com






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