Nice one! This looks very much like the OpenCL version (from my memory). For what it's worth, there is also a GLSL grid option available in QC... but this looks pretty good with the Sprite! Thanks for posting. If you haven't checked it out yet, there's a multisampling option available in QC4, Snow Leopard, by choosing Option+Preferences, going to the "Editor" tab, and then checking the "multisampling" box. This will work if you have a supported GPU. This looks especially excellent with the multisampling.
For high quality offline rendering, you don't necessarily need CS4, though it's a nice suite. If you are becoming interested in QC, you definitely want to consider checking out Kineme's Quartz Crystal application. It has options for anti-aliasing as well as motion blur... By rendering a qtz to video using Quartz Crystal, you can achieve video renders driven by the Quartz Composer engine that reflect a much higher level of visual quality than you can achieve with Quartz Composer in real-time. For the cost, the value in quality and convenience is unreal. (http://kineme.net) -George Toledo On Mon, Sep 21, 2009 at 7:29 PM, Tom Beddard <[email protected]> wrote: > Hi folks. I've been lurking here for a while after but I thought it was > time to introduce myself and contribute something. > I have an interest in mathematical and generative graphics and over the > past while I've created a few GPU shaders for Adobe Pixel Bender for use in > Photoshop and After Effects. After Vade got me interested in Quartz Composer > I've started converting some of these over to QC compositions. > > My first contribution is a GLSL port of Keenan Crane's Cg quarternion Julia > set ray tracer. It's pretty much a straight port to a GLSL patch but QC > makes it so easy to play around with the parameters and hook it into other > stuff. > The one thing I did add was support for an approximate ambient occlusion > addition to the shading of the 3D surface. It's actually derived from a > by-product of the ray tracing process so adds almost no overhead to the > final computation, but adds a nice visual improvement. > > I've posted full details about the QC patch along with the Pixel Bender > version (for high res rendering in Photoshop CS4) over on my blog: > http://www.subblue.com/blog/2009/9/20/quaternion_julia > > Also attached the QC composition: > > > > I also just noticed that there is an OpenCL version now too: > > http://developer.apple.com/mac/library/samplecode/OpenCL_RayTraced_Quaternion_Julia-Set_Example/index.html > > > CheersT. > > > -- > *Tom Beddard* > http://www.subblue.com > > > > > > _______________________________________________ > 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/gtoledo3%40gmail.com > > This email sent to [email protected] >
_______________________________________________ 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/archive%40mail-archive.com This email sent to [email protected]
