GPU Terrain Test using Rust & WGPU

GPU rendered surface nets terrain. Each chunk is composed of 64x64x64 voxels, and the chunks are generated around the player in a volume of 19x19x(4 | 19) chunks. All chunks are drawn using indirect drawing where each IndexedIndirectDraw structure is filled/generated using the meshing compute shaders.

Fully GPU rendered, with little readback to the CPU (only needed for knowing chunk indices withing allocation to be able to free pooled up memory, however, this can be converted to a compute shader for no readback at all).

Each chunk takes approximately 1-2ms to generate it's voxel data, and around 100 micro seconds for everything else (meshing, memory allocation and copying around temp to perm memory). Talking about meshing, the currently algorithm I use is called the "Surface Nets" algorithm, which resembles Dual Contouring but differs from it by not using a QEF. Due to that, I could merge the vertices on the GPU since SN only generates one vertex per "cell", so by using that assumption, I could make use of atomic operations to share vertices between triangles.

As far as the engine goes, the whole graphics API of the engine has been rewritten using WGPU, and multiple internal crates (libraries) have been improved. I have also implemented multithreaded asset loading and multithreadable ECS queries, which allow me to run my frustum culling / matrix update operations in other threads simultaneously.

Shader toy erosion code: https://www.shadertoy.com/view/MtGcWh

Github Repository: https://github.com/jedjoud10/cflake-engine