1 files changed, 32 insertions, 0 deletions
diff --git a/src/command_buffer/validity/debug_marker.rs b/src/command_buffer/validity/debug_marker.rs
new file mode 100644
index 0000000..9a80e7f
--- /dev/null
+++ b/src/command_buffer/validity/debug_marker.rs
@@ -0,0 +1,32 @@
+use std::{error, fmt};
+
+/// Checks whether the specified color is valid as debug marker color.
+///
+/// The color parameter must contain RGBA values in order, in the range 0.0 to 1.0.
+pub fn check_debug_marker_color(color: [f32; 4]) -> Result<(), CheckColorError> {
+    // The values contain RGBA values in order, in the range 0.0 to 1.0.
+    if color.iter().any(|x| !(0f32..=1f32).contains(x)) {
+        return Err(CheckColorError);
+    }
+
+    Ok(())
+}
+
+/// Error that can happen from `check_debug_marker_color`.
+#[derive(Debug, Copy, Clone)]
+pub struct CheckColorError;
+
+impl error::Error for CheckColorError {}
+
+impl fmt::Display for CheckColorError {
+    #[inline]
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+        write!(
+            fmt,
+            "{}",
+            match *self {
+                CheckColorError => "color parameter does contains values out of 0.0 to 1.0 range",
+            }
+        )
+    }
+}