I'm assuming that the last texture unit (tu[3]) represents the alpha channel. I have not tried this specific code. But I do something similar in another project. Let me know if it works :)
TextureAttributes ta = new TextureAttributes(); ta.setTextureMode(ta.COMBINE); // Keep the color the same as it was ta.setCombineRgbMode(ta.COMBINE_REPLACE); ta.setCombineRgbSource(0, ta.COMBINE_PREVIOUS_TEXTURE_UNIT_COLOR); // Replace the alpha with the texture's alpha. ta.setCombineAlphaMode(ta.COMBINE_REPLACE); ta.setCombineAlphaSource(0, ta.COMBINE_CONSTANT_COLOR); ta.setCombineAlphaFunction(0, ta.COMBINE_SRC_ALPHA); tu[3].setTextureAttributes(ta); -Stoney ----- Original Message ----- From: "Ben Moxon" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 09, 2002 8:41 AM Subject: Re: [JAVA3D] Running greyscale textures into colour/alpha channels > I can see how that will work with setting the colour- what setting to I have to use (in TextureAttributes.setTextureBlendColor() I'm guessing ) on the alpha-channel to use the black -> white element of the image for alpha as well as the colour channel? > > -ben > > -----Original Message----- > From: Artur Biesiadowski [mailto:[EMAIL PROTECTED]] > Sent: 09 October 2002 11:14 > To: [EMAIL PROTECTED] > Subject: Re: [JAVA3D] Running greyscale textures into colour/alpha > channels > > > Ben Moxon wrote: > > How would I go about mixing several textures so that each one fills a colour channel and the alpha channel? > > > > I have created an array of TextureUnitStates, one for each texture, and they are all drawing correctly but each texture is in a grey_scale/alpha format and what I want is for texture1 to be red_channel/alpha, texture2 to be green_channel_alpha and so on, blending them all so I get a white centre and a mix of other colours around the edges where they merge. > > > Use BLEND mode + set constant blend color to correct channel on each stage. > > Never done this, but it should work this way. > > Artur > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff JAVA3D-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". > > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff JAVA3D-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". > =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
