Implement appearance baking pipeline (#66)

crates/libremetaverse/src/appearance_baker_semantics.rs

@@ -35,7 +35,12 @@ fn bake_grayscale_layer_texture_does_not_throw() {
     let mut baker = imaging::Baker::new(BakeType::UpperBody).unwrap();
     baker.add_texture(data).unwrap();
     baker.bake().unwrap();
-    assert!(baker.baked_texture().is_some());
+    let baked = baker.baked_texture().unwrap();
+    let image = baked.image.unwrap();
+    assert_eq!((image.width, image.height), (1024, 1024));
+    assert_eq!((image.red[0], image.green[0], image.blue[0]), (63, 31, 94));
+    assert_eq!(image.alpha[0], 255);
+    assert_eq!(image.bump[0], 0);
 }
 
 // parity-case: LibreMetaverse.Tests/BakerTests.cs::BakerTests.Bake_GrayscaleHairTextureNoSkin_DoesNotThrow::test e48b737d9138e63cda98b5e80bf561a80d1dab5de78901ac9e1bb320ca281eb6 translated
@@ -97,3 +102,19 @@ fn resize_to_bake_dimensions_source_smaller_in_one_axis_only_scales_rather_than_
     assert_eq!(result.height, 4);
     assert!(result.red[3 * 4] > 50);
 }
+
+#[test]
+fn bake_type_for_preserves_the_reference_base_layer_mapping() {
+    assert_eq!(
+        imaging::Baker::bake_type_for(AvatarTextureIndex::UpperShirt).unwrap(),
+        BakeType::UpperBody
+    );
+    assert_eq!(
+        imaging::Baker::bake_type_for(AvatarTextureIndex::UpperTattoo).unwrap(),
+        BakeType::Unknown
+    );
+    assert_eq!(
+        imaging::Baker::bake_type_for(AvatarTextureIndex::Aux1Tattoo).unwrap(),
+        BakeType::Unknown
+    );
+}