I’ve been implementing an alternative CPU algorithm to draw contours last week. It was pitched by Markosian et. al, and I based my implementation on this Siggraph 2008 class by D. Decarlo. Instead of testing all faces of a mesh for contours, I only test a configurable amount of random …
This is starting to be a weekly issue. Today’s edition: find the rabbit.
A must see:
Some renders from my CG2 practicum about global illumination. A very rough implementation of Cook-Torrance BRDF (left) and Oren-Nayar BRDF (right).
The presentation i’ll be giving tomorrow
After squashing a rather nasty bug this morning (GLSL shader memory alloc is tricky), I made some renders to demonstrate the algorithm. The algorithm is an object-space algorithm. This has some implications: Operations are performed with direct vertex info. No intermediate rendering+signal filtering is done. Rendering it on the GPU …
I don’t know what just happened to my shader, but this sure looks funky.
I’ve been trying to work out a good CPU-accelerated version the my suggestive contours algorithm during the last few weeks, and after working through some technical difficulties, I managed to compute and draw regular contour lines this afternoon: Hard to see? I know, it looks craptastic. But after an afternoon …
An overview of the work done upto january on my thesis. My most recent work (on the GLSL implementation) is not included, this is all rendered using the CPU. The main differences with last video: Better viewport consistency by applying fading of the contour lines. (Reduces flicker effect) Optimalisation of …
Today I rewrote parts of Trimesh2’s Mesh Viewer to work with GLSL-shaders. I implemented a simple cartoon shader. This is still pretty basic, since it doesn’t involve sending information back and forth between OpenGL and the shader. Still, here is the result.