ompf2.com

Hello all, Here are some screenshots of the progress that I am working in a raytracing for the Kicad (PCB EDA tool) https://meocloud.pt/link/aaf06e3f-e308-40c8-bddb-f8aa762b4a16/20151027_3d-viewer/ (please download the image file if you want the full resolution) I implemented an adaptive tracing to ...

Hello, I have a basic question. If I assigned a material to an object that will perturb the normals, where / how that change of the normals should be applied? Usually the objects implement a GetNormal( uv coords?) should that GetNormal function call the material function that will perturb the normal...

Hello all,
I was wondering if there are any experiences or discussions on using 'GPU style shaders' in raytracing.
I was thinking to try to use SSAO (screen space ambient occlusion) in my CPU raytracing.

Also, couldn't that technics be used in GPU raytracers as well?

Hi, I was randomly browsing the forum when I stumbled upon this thread. Very interesting use case of raytracing. Since I'm the founder and one of the core developers of appleseed, I thought I could chime in. Yes, appleseed is first and foremost a (shared) raytracing library. There are complete C++ ...

Hello all,
so it seems that I only use this forum to ask things :/

Does anyone know a implementation for BVH raypack traversal that use also frustum tests?
Something as described in the "Large Ray Packets for Real-time Whitted Ray Tracing"
http://cseweb.ucsd.edu/~ravir/whitted.pdf

Thanks in advance!

Hello all, I would like to generate the frustum planes (for frustum aabb test) from the (primary) rays of the 4 corners of a packet bucket does anyone have source code that will generate it? Thanks! Edit: I found this implementation that I am trying to use: https://github.com/nslo/raytracer/blob/2c2...

Hello all, Just show you the progress of my humble raytracing that I am working for KiCad (an opensource PCB EDA tool) I almost finish to convert a board into raytracing shapes (i.e: polygons, triangles, cylinders, round segments, rings, disks, CSG, etc..) Still no shading, the attached images are c...

I am looking for a way to intersect a cylinder without use quadrics (because it is losing lots of precision in my implementation with the small size of the objects and the camera zoom)
Any one?
Thanks!

Found one:
http://www.cs.utah.edu/~lha/Code%206620 ... linder.cpp

Hi Matt, [1] I am not a C++ expert, but isn't this line here redundant? inline uint32_t LeftShift3(uint32_t x); https://github.com/mmp/pbrt-v3/blob/master/src/accelerators/bvh.cpp#L81 EDIT: [2] The depth in flattenBVHTree(BVHBuildNode *node, int *offset, int depth) https://github.com/mmp/pbrt-v3/blo...

Any one know some good "hierarchical grids" (or good octree) implementation in CPU?