Brian Mannlein (bmannlein++at++multigen.com)
Tue, 16 Jun 1998 09:49:11 -0700
> Is alpha supported with clip textures?
I'd like to know this as well.
> I created a clip texture with alpha and I'm not seeing good results in
> perfly 2.2 (i.e., no alpha). I'm using mgmosaic to generate the clip
> texture (sgi8888, or raw8 format) and specifying alpha=0 for the
> region mgmosaic pads to create a square texture.
I've also made clip textures with mgmosaic in both sgi8888 and sgi5551.
Both of these formats had the alpha's set correctly and displayed
properly in MultiGen. However, when I loaded the .ct file into perfly,
it only displayed the red, green and blue values.
> I haven't verified the alpha values in the raw8 files, but I have
> verified mgmosaic generates correct alpha in rgba ("RGBA" in mgmosaic)
> files. (That format isn't read by pf 2.2).
I have verified this.
> Do I have to pfEnable(blending ..) somewhere?
I don't know. Does anyone know how to get alpha in the background color
of a clip texture (without padding with another texture that has alpha)?
Regards,
Brian Mannlein
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