Lighting pass now renders to Rgba16Float HDR target. A 5-level bloom mip chain (downsample with bright-extract threshold, then additive upsample) feeds into an ACES tonemap pass that composites the final LDR output to the swapchain surface. All resources resize correctly. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>