Refactor to generalize pipeline drawing sequence

src/color.rs

@@ -0,0 +1,77 @@
+#[repr(C, align(16))]
+#[derive(Debug, Copy, Clone)]
+pub struct Color {
+	pub r: f32,
+	pub g: f32,
+	pub b: f32,
+	pub a: f32,
+}
+
+impl Color {
+	pub fn new(r: f32, g: f32, b: f32, a: f32) -> Self {
+		Self { r, g, b, a }
+	}
+
+	pub const TRANSPARENT: Self = Color {
+		r: 0.0,
+		g: 0.0,
+		b: 0.0,
+		a: 0.0,
+	};
+
+	pub const BLACK: Self = Color {
+		r: 0.0,
+		g: 0.0,
+		b: 0.0,
+		a: 1.0,
+	};
+
+	pub const WHITE: Self = Color {
+		r: 1.0,
+		g: 1.0,
+		b: 1.0,
+		a: 1.0,
+	};
+
+	pub const RED: Self = Color {
+		r: 1.0,
+		g: 0.0,
+		b: 0.0,
+		a: 1.0,
+	};
+
+	pub const YELLOW: Self = Color {
+		r: 1.0,
+		g: 1.0,
+		b: 0.0,
+		a: 1.0,
+	};
+
+	pub const GREEN: Self = Color {
+		r: 0.0,
+		g: 1.0,
+		b: 0.0,
+		a: 1.0,
+	};
+
+	pub const CYAN: Self = Color {
+		r: 0.0,
+		g: 1.0,
+		b: 1.0,
+		a: 1.0,
+	};
+
+	pub const BLUE: Self = Color {
+		r: 0.0,
+		g: 0.0,
+		b: 1.0,
+		a: 1.0,
+	};
+
+	pub const MAGENTA: Self = Color {
+		r: 1.0,
+		g: 0.0,
+		b: 1.0,
+		a: 1.0,
+	};
+}