nx_f32_rectflow_denoise.nx

nx_f32_rectflow_denoise.nx -- software-f32 rectified-flow (flow-matching) Euler denoise loop. sd-server -> Nishi migration: this REPLACES Z-Image Turbo's exact sampler -- FLOW_PRED (rectified flow) + euler method + discrete scheduler. Z-Image uses it at 6 steps. The loop runs the DiT block as the velocity predictor each step and integrates along the schedule: for s in 0..n_steps: v = DiT_block(x ; weights, conditioning_s) # predicted velocity (flow) dt = sigma[s+1] - sigma[s] # schedule step (rectified-flow: linear in sigma) x = x + dt * v # Euler update Composes the gated `nx_f32_dit_block_tiny` + f32 add/sub/mul. x: flat *i64 f32 bits [n_tokens, D] (mutated in place: noise -> clean latent). sigmas: [n_steps+1] f32 (the noise schedule). Weights are the DiT block's (shared across steps here; real inference varies the adaLN conditioning per timestep). license_tier: ORIGINAL