forge-planar-reflections

Planar reflections in an SDL GPU scene require a reflection render pass using a mirrored camera with oblique near-plane clipping, rendering to an offscreen texture, and blending with a Fresnel shader.

Oblique near-plane clipping works by modifying the projection matrix to prevent the mirrored camera from rendering geometry behind the reflection plane, ensuring the water shader only samples valid reflected scene data.

Yes, the planar reflection pipeline supports mirrors and polished floors by rendering a mirrored camera view to an offscreen texture and blending it with the surface using Fresnel shading.

The best way to blend reflection textures with water tint in SDL GPU is by using a Fresnel blended water shader that dynamically mixes the sampled offscreen reflection texture with the base water color.

Yes, you need a separate reflection render pass to draw the mirrored scene into an offscreen texture before the main render loop samples it for the final water or mirror surface blending.