int4/README.md

PIXLRelight Renderer ONNX INT4

Weight-only INT4 MatMulNBits export of the PIXLRelight renderer core. This is intended for ONNX Runtime Web/WebGPU experiments where MatMulNBits kernels are available. Activations remain floating point; this is not full W4A4 quantization.

Inputs: source_images [B,3,512,512] and target_intrinsics [B,9,512,512]. Outputs: rgb, rgb_gain, rgb_bias.