Hi again, Is it a bug?
I though about this and think, that someone simply forgot the rule that when a sprite is drawn, and the current pixel to draw has an alpha value of zero, the depth buffer of that pixel don't have to be changed. Because the shadow map is created as a depth buffer from the light position point of view, in the case of the particle renderer this rule has been implemented, but in case of the sprite not. Yes, I think this is a bug. best, Achim Breidenbach Boinx Software On 17.09.2010, at 03:14, George Toledo wrote: > One thing that I've noted about the shadow option on the lighting patch is > that if one has an image with "alpha black" rendering to a sprite, and places > the sprite to "over" blend mode, the shadow that is cast is still a square. > This has led me to think, up until now, that there is nothing going on that > could make the shadow engine cast the "shape" of the image. So, "Hell World" > from an image with string patch to a sprite would always cast a shadow that > is "square". > > I happened to notice today that though the actual particles in a particle > system render in a way that "doesn't look right", that the actual shadow cast > seems to "pay mind" to the image I'm feeding it! This, to me, is amazing. If > this is a scenario where it is possible to get this kind of function with > something like image with string to Sprite, when using Over blend mode, it > would be great. In testing that with the particle system, I don't seem to get > any real useful results, but simple shapes like this circle seem to work fine. > > Please note that when particles render, the shadow that is cast is circular, > but when the sprite renders, the shadow that is cast is square. > > Is this a step or so away from working? Worth filing a bug? > > -- > George Toledo > [email protected] > www.georgetoledo.com > > The information contained in this E-mail and any attachments may be > confidential. > If you have received this E-mail in error, please notify us immediately by > telephone or return E-mail. > You should not use or disclose the contents of this E-mail or any of the > attachments for any purpose or to any persons. > > <shadow and texture.qtz> _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/quartzcomposer-dev/achim%40boinx.com > > This email sent to [email protected]
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