Integration of HardSigmoid Operation

README.md

@@ -265,7 +265,7 @@ fn test_matmul_square_matrix() {
 |<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#GlobalMaxPool">GlobalMaxPool</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#GlobalMaxPool-1">1</a>|
 |<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#Greater">Greater</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Greater-13">13</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Greater-9">9</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Greater-7">7</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Greater-1">1</a>|✅|
 |<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#GridSample">GridSample</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#GridSample-16">16</a>|
-|<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#HardSigmoid">HardSigmoid</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#HardSigmoid-6">6</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#HardSigmoid-1">1</a>|
+|<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#HardSigmoid">HardSigmoid</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#HardSigmoid-6">6</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#HardSigmoid-1">1</a>|✅|✅|
 |<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#Hardmax">Hardmax</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Hardmax-13">13</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Hardmax-11">11</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Hardmax-1">1</a>|
 |<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#Identity">Identity</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Identity-16">16</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Identity-14">14</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Identity-13">13</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#Identity-1">1</a>|✅|✅|
 |<a href="https://github.com/onnx/onnx/blob/main/docs/Operators.md#If">If</a>|<a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#If-16">16</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#If-13">13</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#If-11">11</a>, <a href="https://github.com/onnx/onnx/blob/main/docs/Changelog.md#If-1">1</a>|

wonnx-py/tests/test_onnx_backend.py

@@ -124,7 +124,6 @@ def do_enforce_test_coverage_safelist(model):  # type: (ModelProto) -> bool
 backend_test = onnx.backend.test.BackendTest(DummyBackend, __name__)
 
 
-
 backend_test.include(f"test_constant_cpu")
 backend_test.include(f"test_conv_[a-z,_]*")
 backend_test.include(f"test_Conv2d[a-z,_]*")
@@ -147,6 +146,9 @@ def do_enforce_test_coverage_safelist(model):  # type: (ModelProto) -> bool
 backend_test.include(f"test_size_[a-z,_]*")
 backend_test.include(f"test_celu_[a-z,_]*")
 
+# Disabled until CastLike is implemented
+# backend_test.include(f"test_hardsigmoid_[a-z,_]*")
+
 # For these we only test the default version, as we don't support the bool type
 backend_test.include(f"test_prelu_broadcast_cpu$")
 backend_test.include(f"test_elu_cpu$")
@@ -162,15 +164,15 @@ def do_enforce_test_coverage_safelist(model):  # type: (ModelProto) -> bool
 # Disable tests for ReduceSum because ReduceSum accepts the 'axes' list as input instead of as an attribute, and the test
 # case sets the 'axes' input dynamically, which we don't support (yet?).
 # backend_test.include(f"test_reduce_sum_[a-z,_]*")
-#backend_test.include(f"test_reduce_mean_[a-z,_]*")
-#backend_test.include(f"test_reduce_l1_[a-z,_]*")
-#backend_test.include(f"test_reduce_l2_[a-z,_]*")
-#backend_test.include(f"test_reduce_min_[a-z,_]*")
-#backend_test.include(f"test_reduce_prod_[a-z,_]*")
-#backend_test.include(f"test_reduce_sum_square_[a-z,_]*")
-#backend_test.include(f"test_reduce_max_[a-z,_]*")
-#backend_test.include(f"test_reduce_log_sum_[a-z,_]*")
-#backend_test.include(f"test_reduce_log_sum_exp_[a-z,_]*")
+# backend_test.include(f"test_reduce_mean_[a-z,_]*")
+# backend_test.include(f"test_reduce_l1_[a-z,_]*")
+# backend_test.include(f"test_reduce_l2_[a-z,_]*")
+# backend_test.include(f"test_reduce_min_[a-z,_]*")
+# backend_test.include(f"test_reduce_prod_[a-z,_]*")
+# backend_test.include(f"test_reduce_sum_square_[a-z,_]*")
+# backend_test.include(f"test_reduce_max_[a-z,_]*")
+# backend_test.include(f"test_reduce_log_sum_[a-z,_]*")
+# backend_test.include(f"test_reduce_log_sum_exp_[a-z,_]*")
 
 # Takes dynamic input, we don't support that yet
 # backend_test.include(f"test_constantofshape_[a-z,_]*")

wonnx/src/compiler.rs

@@ -739,13 +739,21 @@ pub fn compile(
             }
         }
         op @ ("Relu" | "Sigmoid" | "Softsign" | "Softplus" | "Clip" | "Celu" | "Elu"
-        | "LeakyRelu") => {
-            let alpha = if op == "LeakyRelu" {
-                node.get_attribute_value("alpha", Some(0.01))?
+        | "LeakyRelu" | "HardSigmoid") => {
+            let alpha = match op {
+                "LeakyRelu" => node.get_attribute_value("alpha", Some(0.01))?,
+                "HardSigmoid" => node.get_attribute_value("alpha", Some(0.2))?,
+                _ => node.get_attribute_value("alpha", Some(1.0))?,
+            };
+
+            let beta = if op == "HardSigmoid" {
+                node.get_attribute_value("beta", Some(0.5))?
             } else {
-                node.get_attribute_value("alpha", Some(1.0))?
+                node.get_attribute_value("beta", Some(1.0))?
             };
+
             context.insert("alpha", &alpha);
+            context.insert("beta", &beta);
 
             if op == "Clip" {
                 let min: Vec<f32> =

wonnx/templates/snippets/activation_scalar.wgsl

@@ -38,6 +38,15 @@
 			{{ scalar_type }}({{ alpha }}) * (exp(input_vec) - {{ scalar_type }}(1))
 		);
 
+{%- elif activation_type == "HardSigmoid" -%}
+	{{ activation_output }} = max(
+		{{ scalar_type }}(0),
+		min(
+			{{ scalar_type }}(1),
+			{{ scalar_type }}({{ alpha }}) * {{ activation_input }} + {{ scalar_type }}({{ beta }})
+		)
+	);
+
 {%- elif activation_output != activation_input -%}
 	{{ activation_output }} = {{ activation_input }};
 

wonnx/templates/snippets/activation_vec.wgsl

@@ -46,6 +46,15 @@
 	{{ activation_output }} = max({{ activation_input }}, Vec4(Scalar(), Scalar(), Scalar(), Scalar()))
 	                         + min({{ scalar_type }}({{ alpha }}) * {{ activation_input }}, Vec4(Scalar(), Scalar(), Scalar(), Scalar()));
 
+{%- elif activation_type == "HardSigmoid" -%}
+	{{ activation_output }} = max(
+		Vec4(Scalar(), Scalar(), Scalar(), Scalar()),
+		min(
+			Vec4({{ scalar_type }}(1), {{ scalar_type }}(1), {{ scalar_type }}(1), {{ scalar_type }}(1)),
+			{{ scalar_type }}({{ alpha }}) * {{ activation_input }} + {{ scalar_type }}({{ beta }})
+		)
+	);
+
 {%- elif activation_output != activation_input -%}
 	{{ activation_output }} = {{ activation_input }};
 

wonnx/tests/hardsigmoid.rs

@@ -0,0 +1,78 @@
+use std::{collections::HashMap, convert::TryInto};
+use wonnx::utils::{attribute, graph, model, node, tensor};
+mod common;
+
+/// Test HardSigmoid node with default alpha and beta
+/// https://github.com/onnx/onnx/blob/main/docs/Operators.md#examples-68
+#[test]
+fn test_hardsigmoid_default() {
+    let input_data = [-2.0, -1.0, 1.0, 2.0];
+    let shape = vec![2, 2];
+
+    let (default_alpha, default_beta) = (0.2, 0.5);
+    let expected_output_data: Vec<f32> = input_data
+        .iter()
+        .map(|x| x * default_alpha + default_beta)
+        .collect();
+
+    let mut model_input = HashMap::new();
+    model_input.insert("X".to_string(), input_data.as_slice().into());
+
+    let node = node(vec!["X"], vec!["Y"], "hard_sigmoid", "HardSigmoid", vec![]);
+
+    let model = model(graph(
+        vec![tensor("X", &shape)],
+        vec![tensor("Y", &shape)],
+        vec![],
+        vec![],
+        vec![node],
+    ));
+
+    let session =
+        pollster::block_on(wonnx::Session::from_model(model)).expect("Session did not create");
+
+    let output = pollster::block_on(session.run(&model_input)).unwrap();
+    let output_data: &[f32] = (&output["Y"]).try_into().unwrap();
+
+    common::assert_eq_vector(output_data, expected_output_data.as_slice());
+}
+
+/// Test HardSigmoid node with predefined alpha and beta
+/// https://github.com/onnx/onnx/blob/main/docs/Operators.md#examples-68
+#[test]
+fn test_hardsigmoid() {
+    let input_data: Vec<f32> = vec![-1.0, 0.0, 1.0];
+    let shape = vec![1, 3];
+
+    let mut model_input = HashMap::new();
+    model_input.insert("X".to_string(), input_data.as_slice().into());
+
+    let alpha = attribute("alpha", 0.5);
+    let beta = attribute("beta", 0.6);
+
+    let node = node(
+        vec!["X"],
+        vec!["Y"],
+        "hard_sigmoid",
+        "HardSigmoid",
+        vec![alpha, beta],
+    );
+
+    let model = model(graph(
+        vec![tensor("X", &shape)],
+        vec![tensor("Y", &shape)],
+        vec![],
+        vec![],
+        vec![node],
+    ));
+
+    let session =
+        pollster::block_on(wonnx::Session::from_model(model)).expect("Session did not create");
+
+    let output = pollster::block_on(session.run(&model_input)).unwrap();
+    println!("{:?}", output);
+
+    let expected_output = &[0.1, 0.6, 1.0];
+    let output_data: &[f32] = (&output["Y"]).try_into().unwrap();
+    common::assert_eq_vector(output_data, expected_output);
+}