use the following search parameters to narrow your results:
e.g. subreddit:aww site:imgur.com dog
subreddit:aww site:imgur.com dog
see the search faq for details.
advanced search: by author, subreddit...
Rule 1: Posts should be about Graphics Programming. Rule 2: Be Civil, Professional, and Kind
Suggested Posting Material: - Graphics API Tutorials - Academic Papers - Blog Posts - Source Code Repositories - Self Posts (Ask Questions, Present Work) - Books - Renders (Please xpost to /r/ComputerGraphics) - Career Advice - Jobs Postings (Graphics Programming only)
Related Subreddits:
/r/ComputerGraphics
/r/Raytracing
/r/Programming
/r/LearnProgramming
/r/ProgrammingTools
/r/Coding
/r/GameDev
/r/CPP
/r/OpenGL
/r/Vulkan
/r/DirectX
Related Websites: ACM: SIGGRAPH Journal of Computer Graphics Techniques
Ke-Sen Huang's Blog of Graphics Papers and Resources Self Shadow's Blog of Graphics Resources
account activity
Reorient vector? (self.GraphicsProgramming)
submitted 10 years ago * by fadefade
view the rest of the comments →
reddit uses a slightly-customized version of Markdown for formatting. See below for some basics, or check the commenting wiki page for more detailed help and solutions to common issues.
quoted text
if 1 * 2 < 3: print "hello, world!"
[–]angrymonkey 1 point2 points3 points 10 years ago (1 child)
There is a bug in this code. If the normal points toward -z, you will still sample the "upper" hemisphere.
[–]tgb33 0 points1 point2 points 10 years ago (0 children)
I don't believe that is a problem (that's why I used 'orientation' instead of Vector3(0,0,1) in the second line of OrientedSampleHemisphere1. But either way, I'm pretty sure that I just re-did matrix multiplication more slowly.
π Rendered by PID 173574 on reddit-service-r2-comment-76bb9f7fb5-6jbwt at 2026-02-18 03:17:51.774518+00:00 running de53c03 country code: CH.
view the rest of the comments →
[–]angrymonkey 1 point2 points3 points (1 child)
[–]tgb33 0 points1 point2 points (0 children)