Real-Time Volume Renderer

This is the result of a final project for a class I've taken on visualization. It is an implementation of a single-pass ray casting volume renderer, accelerated with fragment_shader2 GPU instructions.

My initial implementation (left hand side) ray casted the volume's bounding box, sampling at every point within it.

As a final, I optimized the ray casting technique so that only points within a bounding isosurface (based on density) are traversed and sampled, instead of a bounding box. This technique achieved speedups of around 4x, restoring reasonable real-time interaction. The speedup is demonstrated in the back/to/back footage here.

Category:

Film & Animation

Tags:

• gpu
• acceleration
• volume
• render
• renderer
• isosurface
• optimization
• optimize
• blinn
• phong
• illumination

[utube4jhb]

How did you do this?

[sobajo]

awsom , thanx