New implementation for reading/showing vram

2025-02-15 18:33:17 -05:00
parent 75779f2b24
commit 57eebb5874
10 changed files with 508 additions and 356 deletions
@@ -0,0 +1,16 @@
+pub const GENERIC_PALETTE: [u8; 4] = [0, 64, 128, 255];
+
+pub fn parse_palette(palette: u8, brts: &[u8]) -> [u8; 4] {
+    let shades = [
+        0,
+        brts[0],
+        brts[2],
+        brts[0].saturating_add(brts[2]).saturating_add(brts[4]),
+    ];
+    [
+        0,
+        shades[(palette >> 2) as usize & 0x03],
+        shades[(palette >> 4) as usize & 0x03],
+        shades[(palette >> 6) as usize & 0x03],
+    ]
+}