Draft first working version of iced_glow 🎉

glow/src/settings.rs

@@ -0,0 +1,50 @@
+//! Configure a [`Renderer`].
+//!
+//! [`Renderer`]: struct.Renderer.html
+
+/// The settings of a [`Renderer`].
+///
+/// [`Renderer`]: ../struct.Renderer.html
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Settings {
+    /// The bytes of the font that will be used by default.
+    ///
+    /// If `None` is provided, a default system font will be chosen.
+    pub default_font: Option<&'static [u8]>,
+
+    /// The antialiasing strategy that will be used for triangle primitives.
+    pub antialiasing: Option<Antialiasing>,
+}
+
+impl Default for Settings {
+    fn default() -> Settings {
+        Settings {
+            default_font: None,
+            antialiasing: None,
+        }
+    }
+}
+
+/// An antialiasing strategy.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Antialiasing {
+    /// Multisample AA with 2 samples
+    MSAAx2,
+    /// Multisample AA with 4 samples
+    MSAAx4,
+    /// Multisample AA with 8 samples
+    MSAAx8,
+    /// Multisample AA with 16 samples
+    MSAAx16,
+}
+
+impl Antialiasing {
+    pub(crate) fn sample_count(self) -> u32 {
+        match self {
+            Antialiasing::MSAAx2 => 2,
+            Antialiasing::MSAAx4 => 4,
+            Antialiasing::MSAAx8 => 8,
+            Antialiasing::MSAAx16 => 16,
+        }
+    }
+}