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softplus support for webgpu #27457

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guschmue merged 2 commits into from
Feb 27, 2026
+31 −1
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softplus support for webgpu #27457

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e603613
softplus support for webgpu
guschmue Feb 25, 2026
c2bdb80
handle overflow for float32 and float16
guschmue Feb 26, 2026
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4 changes: 4 additions & 0 deletions onnxruntime/core/providers/webgpu/math/unary_elementwise_ops.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -291,5 +291,9 @@ WEBGPU_ELEMENTWISE_KERNEL(LeakyRelu, 16, WebGpuSupportedFloatTypes())
WEBGPU_LU_IMPL(ThresholdedRelu, "select(vec4<x_element_t>(0), a, a > vec4<x_element_t>(uniforms.attr))", "", 1.0f)
WEBGPU_ELEMENTWISE_KERNEL(ThresholdedRelu, 10, WebGpuSupportedFloatTypes())

WEBGPU_ELEMENTWISE_IMPL(Softplus, "select(log(1.0 + exp(a)), a + log(1.0 + exp(-a)), a > x_value_t(0))", "", ShaderUsage::UseValueTypeAlias)
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WEBGPU_ELEMENTWISE_VERSIONED_KERNEL(Softplus, 1, 21, WebGpuSupportedFloatTypes())
WEBGPU_ELEMENTWISE_KERNEL(Softplus, 22, WebGpuSupportedFloatTypes())

} // namespace webgpu
} // namespace onnxruntime
4 changes: 4 additions & 0 deletions onnxruntime/core/providers/webgpu/webgpu_execution_provider.cc
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Expand Up @@ -146,6 +146,8 @@ class ONNX_OPERATOR_VERSIONED_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxD
class ONNX_OPERATOR_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 16, LeakyRelu);
class ONNX_OPERATOR_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 10, ThresholdedRelu);
class ONNX_OPERATOR_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 20, Gelu);
class ONNX_OPERATOR_VERSIONED_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 1, 21, Softplus);
class ONNX_OPERATOR_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 22, Softplus);

class ONNX_OPERATOR_VERSIONED_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 1, 10, ReduceMax);
class ONNX_OPERATOR_VERSIONED_KERNEL_CLASS_NAME(kWebGpuExecutionProvider, kOnnxDomain, 11, 11, ReduceMax);
Expand Down Expand Up @@ -496,6 +498,8 @@ std::unique_ptr<KernelRegistry> RegisterKernels(bool enable_graph_capture = fals
KERNEL_CREATE_INFO(16, LeakyRelu),
KERNEL_CREATE_INFO(10, ThresholdedRelu),
KERNEL_CREATE_INFO(20, Gelu),
KERNEL_CREATE_INFO_VERSIONED(1, 21, Softplus),
KERNEL_CREATE_INFO(22, Softplus),

// // binary - math
KERNEL_CREATE_INFO_VERSIONED(7, 12, Add),
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