Modern Voxlap

Modern Voxlap is a rendering demo that is one part re-implemented Voxlap engine, and one part Vulkan code.

To be precise, it does ray casting on the CPU to generate a ray map (accessible from the demo by pressing P), then it projects it onto a screen quad on a GPU using a fragment shader. The latter step is done on a CPU in the original Voxlap engine.

Features

• Multithreading: uses all cores for rendering
• Uses a GPU shader for projection
• Can combine rasterization for models and raycasting for the world
• No artifacts when looking directly up or down
• No crashes when looking from inside a solid

Non-features (TODOs)

• Level of Detail (LOD)
• Optimizations
• Rasterization doesn’t use a depth buffer from the raycasting step
• Edits to the world
• Lighting

These features really should be present in a serious engine, but I wanted to put a logical pause on the project because I have real-world stuff to attend to, instead of voxel engines.

Source?

I was planning on maybe making a game with it – so I am sorry, not yet, maybe later! In the meanwhile, you can take a look at the Voxlap engine ported to modern systems here. The source of the latter part of the rendering process is also available in the fork.

Credits

• Voxlap engine

• RLE-based-Voxel-Raycasting