Kelemen-style Metropolis Light Transport on the GPU

Most available production renderers implementing Metropolis Light Transport use the Kelemen mutation on top of Bidirectional Path Tracing. This video shows my initial attempt at a GPU implementing of such an algorithm. This is still a work in progress. It already supports the basic features: BDPT including explicit connections with the lens , Multiple Importance Sampling and Metropolis Light Transport.

Some details for those interested...
Render Resolution: 1280x720
Maximum path depth: 16
GPU: GeForce GTX 470
GPGPU Framework: CUDA

Category:

Science & Technology

Tags:

• Kelemen
• Metropolis Light Transport
• GPU
• BDPT
• MIS
• MLT
• Bidirectional Path Tracing
• Multiple Importance Sampling
• CUDA

[ChazZeromus]

Is there a book for this? I'm interested. Caustics on GPU D:

[Dietger86]

@ChazZeromus Afaik, there is not. This is still ongoing research.

[SuperGastrocnemius]

Amazing speed, image quality and caustics (and 720p!)

Magnificent work! How many triangles does this scene contain?

[Dietger86]

@SuperGastrocnemius The scene contains 370K triangles, but the performance hardly depends on the triangle count. A scene with over 1 million triangles renders just as fast.

[ChazZeromus]

@Dietger86

Dissapointed. But glad development is ongoing.

[4E65676174726F6E]

Caustics on a GPU, I'm impressed.

[SuperGastrocnemius]

@Dietger86

hehe, that's fantastic! This is really groundbreaking stuff, keep posting videos please!

[TheLogicalError]

Very impressive!