Search found 56 matches

by hobold
Wed Nov 14, 2012 1:28 pm
Forum: Visuals, Tools, Demos & Sources
Topic: Intel Xeon Phi Preferred Pricing - Only $400 per Card ?
Replies: 29
Views: 30778

Re: Intel Xeon Phi Preferred Pricing - Only $400 per Card ?

Xeon Phi is no magic bullet. Massively parallel hardware cannot and will never "automagically" accelerate serially dependent algorithms. In that regard, it is no improvement over GPUs. (There is also a fundamental line of reasoning that the most efficient algorithms keep re-using each bit of compute...
by hobold
Wed Nov 07, 2012 5:45 pm
Forum: Links & Papers
Topic: Ph.D. thesis
Replies: 21
Views: 29626

Re: Ph.D. thesis

I want to award one bonus point each for mentioning both the Commodore Amiga as well as AltiVec. Motorollin'! :)
by hobold
Thu Oct 25, 2012 10:53 pm
Forum: General Development
Topic: AABB for clipped triangle
Replies: 8
Views: 5860

Re: AABB for clipped triangle

I think trolls need to be banned rather than fed. :)
by hobold
Sun Oct 21, 2012 10:44 pm
Forum: General Development
Topic: AABB for clipped triangle
Replies: 8
Views: 5860

Re: AABB for clipped triangle

It might not be necessary to intersect all 12 voxel edges with the triangle. If the voxel's 8 vertices all lie on the same side of the triangle's plane, the triangle must miss the voxel. This should at least be enough for a quicker early rejection test.
by hobold
Mon Oct 08, 2012 1:09 pm
Forum: Visuals, Tools, Demos & Sources
Topic: Intel Xeon Phi Preferred Pricing - Only $400 per Card ?
Replies: 29
Views: 30778

Re: Intel Xeon Phi Preferred Pricing - Only $400 per Card ?

It is not uncommon for big companies to "subsidize" the occasional prestigious project. While I am pretty sure that Intel would still make profit at $400, I strongly suspect they will want to milk their early adopters for much more.
by hobold
Tue Sep 11, 2012 8:17 pm
Forum: General Development
Topic: Quadrics kinda sorta work for real time
Replies: 34
Views: 25211

Re: Quadrics kinda sorta work for real time

Today: a lab experiment; tomorrow: a prototype; next week: the world! :) But jokes aside, this will be a long road. GraphicsMan, "you da man!" for pointing me to a much better starting point than what I have tried on my own. In the unlikely case that I do indeed end up enabling ubiquitous curved sur...
by hobold
Tue Sep 11, 2012 6:38 pm
Forum: General Development
Topic: Quadrics kinda sorta work for real time
Replies: 34
Views: 25211

Re: Quadrics kinda sorta work for real time

Think of the grey cylinders as control mesh. If you applied mid-edge subdivision, the limit surface would consist of four curved triangular patches (order 2 Bezier triangles, I presume). What you are actually seeing are four triangular quadric patches, that seem to approximate the actual limit surfa...
by hobold
Tue Sep 11, 2012 9:02 am
Forum: General Development
Topic: Quadrics kinda sorta work for real time
Replies: 34
Views: 25211

Re: Quadrics kinda sorta work for real time

Hmm. Maybe this can actually work ... :)
Image
by hobold
Wed Aug 01, 2012 10:46 am
Forum: General Development
Topic: Quadrics kinda sorta work for real time
Replies: 34
Views: 25211

Re: Quadrics kinda sorta work for real time

I don't know yet if we will get to vote or if the underlying math will dictate it all. Meanwhile, I found another more thorough derivation of the subdivision scheme based on the ZP-element: http://www.cs.rice.edu/~jwarren/papers/edge.ps . The authors propose a different way of handling irregular fac...