forge-procedural-sky

To render a procedural sky with atmospheric scattering in SDL, you wire compute passes for LUT generation and a per-frame sky render pass, binding LUT textures while pushing camera and sun uniforms each frame.

LUT-accelerated atmospheric scattering is a technique that precomputes transmittance and multi-scattering data into lookup tables, enabling per-pixel ray marching to deliver physically-based, horizon-accurate sky colors in real-time outdoor scenes.

Yes, you can use this procedural sky capability for dynamic time-of-day systems by adjusting the sun direction and horizon color uniforms each frame to achieve realistic outdoor lighting transitions without static sky textures.

Yes, the atmospheric sky rendering pipeline supports optional bloom and tonemap workflows, allowing you to integrate the per-frame sky render pass directly into your existing post-processing stages for real-time outdoor scenes.

The best way to generate transmittance and multi-scattering LUTs for real-time rendering is through dedicated compute passes that precompute atmospheric scattering data, which are then bound as textures during the per-frame sky render pass.