Rendering pipeline #1

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Jayrude · 2024-05-09T12:24:19Z

Jayrude commented

2024-05-09 12:24:19 +00:00

The whole point of this project is to be able to compare multiple renderers, so we need to think about a standard renderer interface.

I want to take some inspiration from hardware raytracing pipelines. I'm thinking there will be four shaders:

Ray generation - Generate initial rays from the camera
Traversal - Traverse the acceleration structure and report any hits
Miss shading - Runs if the ray doesn't hit anything. Basically just colours against a skybox
Hit shading - Runs if the ray did hit something

The ray generation and miss shading shaders should be able to be made generic across all of the voxel raytracing methods but we'll see. Having this common setup and common GPU buffers for rays means we could theoretically be swapping between each raytracing technique each frame (assuming all of the raytracers have the appropriate voxels in memory).

The whole point of this project is to be able to compare multiple renderers, so we need to think about a standard renderer interface. I want to take some inspiration from hardware raytracing pipelines. I'm thinking there will be four shaders: 1. Ray generation - Generate initial rays from the camera 2. Traversal - Traverse the acceleration structure and report any hits 3. Miss shading - Runs if the ray doesn't hit anything. Basically just colours against a skybox 4. Hit shading - Runs if the ray did hit something The ray generation and miss shading shaders should be able to be made generic across all of the voxel raytracing methods but we'll see. Having this common setup and common GPU buffers for rays means we could theoretically be swapping between each raytracing technique each frame (assuming all of the raytracers have the appropriate voxels in memory).

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Reference: NERV/BEAVER#1