add test for #1705

Author: raphamorim

sugarloaf/tests/wgsl_validation.rs

@@ -0,0 +1,60 @@
+// Copyright (c) 2023-present, Raphael Amorim.
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+use naga::valid::{Capabilities, ValidationFlags, Validator};
+
+const SHADERS: &[(&str, &str)] = &[
+    (
+        "renderer/renderer.wgsl",
+        include_str!("../src/renderer/renderer.wgsl"),
+    ),
+    (
+        "renderer/image.wgsl",
+        include_str!("../src/renderer/image.wgsl"),
+    ),
+    ("text_shader.wgsl", include_str!("../src/text_shader.wgsl")),
+    (
+        "grid/shaders/grid.wgsl",
+        include_str!("../src/grid/shaders/grid.wgsl"),
+    ),
+    (
+        "components/filters/shader/triangle.wgsl",
+        include_str!("../src/components/filters/shader/triangle.wgsl"),
+    ),
+    (
+        "components/filters/shader/blit.wgsl",
+        include_str!("../src/components/filters/shader/blit.wgsl"),
+    ),
+];
+
+#[test]
+fn bundled_wgsl_shaders_pass_naga_validation() {
+    let mut failures = Vec::new();
+    for (name, source) in SHADERS {
+        match naga::front::wgsl::parse_str(source) {
+            Err(err) => {
+                failures.push(format!(
+                    "{name}: parse error\n{}",
+                    err.emit_to_string(source)
+                ));
+            }
+            Ok(module) => {
+                let mut validator =
+                    Validator::new(ValidationFlags::all(), Capabilities::default());
+                if let Err(err) = validator.validate(&module) {
+                    failures.push(format!(
+                        "{name}: validation error\n{}",
+                        err.emit_to_string(source)
+                    ));
+                }
+            }
+        }
+    }
+    assert!(
+        failures.is_empty(),
+        "WGSL shaders rejected by naga:\n\n{}",
+        failures.join("\n\n")
+    );
+}