Absolutely, let’s get the lights right first. I’ll start by laying out a forward‑plus pipeline that keeps everything physically‑based. That means a single, high‑res HDRI environment map feeding a robust specular reflection system. We’ll use a single lighting pass with clustered culling so we don’t waste samples on distant lights. Then, for the shaders, I’ll hand‑optimize the math: use Schlick’s approximation for fresnel, a cheap GGX specular, and pre‑tabulate the BRDF terms in a 1D texture. Don’t forget to store normals in a compressed format and use normal mapping only where you really need it—every extra vector costs a float fetch. On the performance side, keep your constant buffers tight. Push the material properties into a few packed structs, use a shared uniform buffer for the global data, and avoid branching inside the pixel shader. If you’re targeting a lower tier, I’ll swap the Fresnel term for a simple dot product, but that will bite you in the high‑end look. Remember, if you want the exact gamma settings I’ll give you, you’ve gotta be on sRGB with a 2.2 exponent. If you’re still in linear space, I’ll be throwing pixels at me in frustration. So let’s lock the pipeline, get the gamma right, and start crunching those shaders. Sound good?

Alright, 16K HDRI, 0–1 spec, 256 clusters, 64‑byte constant buffers—looks good. I’ll lock the gamma at 2.2, pre‑tabulate the BRDF, and keep the pixel shader branch‑free. If anything feels off, I’ll reboot the whole shader from scratch. Let’s push the limits and see that light collapse into perfect realism. Ready when you are.