Hi, everyone. I'd like to ask when the ray tracing renderers can add light sources and spotlights

[xiaxc1]

I'm using ray tracing renderers, but I don't support point light and spot light. I try to add point light according to parallel light. Unfortunately, I can't understand the case of parallel light. Can you give me some advice

[elfrank]

Hi @xiaxc1 , what do you mean by " the case of parallel light"? could you re-phrase the question?

[xiaxc1]

Code for parallel light

[xiaxc1]

您好，我还想问一下我每次渲染的时候需要很长的准备时间，有什么办法能解决这个时间很长的问题吗？还有一个就是我能加渲染的进度条吗，渲染完成能否停止渲染，感谢

[elfrank]

@xiaxc1 the PBRT book is a great resource with theory and sample (CPU) code: http://www.pbr-book.org/3ed-2018/Light_Sources/Point_Lights.html . The newer version will include a GPU implementation but I don't think that's public yet.

In terms of adding support for other types of light, I recommend looking into the decomposeScene method here:

ray-tracing-renderer/src/renderer/decomposeScene.js

Line 3 in 4e0c1d0

export function decomposeScene(scene) {

[xiaxc1]

OK, thank you. Thank you for your answer. I'll take a look at this case

[ManishJu]

@elfrank Will there be support for area lights anywhere in the future ?