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webgpu: add FormatTransform kernel and tests #26638

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@jchen10 jchen10 commented Nov 23, 2025

  • add the WebGPU FormatTransform kernel, headers, and WGSL template, supporting Plain <-> nChw4c/ABcd16a4b conversions
  • register the FormatTransform schema in the internal NHWC domain with padding-aware shape inference
  • hook the kernel into the WebGPU execution provider and add WebGPU tests covering both blocked formats, padding cases, and round trips

@guschmue guschmue added the ep:WebGPU ort-web webgpu provider label Dec 2, 2025
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webgpu: add FormatTransform kernel and tests
97e695b 
- add the WebGPU FormatTransform kernel, headers, and WGSL template,
supporting Plain <-> nChw4c/ABcd16a4b conversions
- register the FormatTransform schema in the internal NHWC domain with
padding-aware shape inference
- hook the kernel into the WebGPU execution provider and add WebGPU
tests covering both blocked formats, padding cases, and round trips
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@jchen10 @guschmue