Vendor dependencies for 0.3.0 release

vendor/ktx2/examples/load.rs

@@ -0,0 +1,34 @@
+use ktx2::{Format, Header, Reader};
+
+fn main() {
+    let file = include_bytes!("../data/test_tex.ktx2");
+    let reader = Reader::new(file).expect("Can't create reader");
+    let header = reader.header();
+    println!("Header: {:#?}", header);
+    assert_head(header);
+
+    let levels = reader.levels().collect::<Vec<_>>();
+    assert_eq!(levels.len(), header.level_count.max(1) as usize);
+
+    let data = reader.data();
+    println!("Data len: {:?}", data.len());
+    test_data(&levels);
+}
+
+fn test_data(info: &[&[u8]]) {
+    for (i, region) in info.iter().enumerate() {
+        println!("Bytes for level {:?}: {:?}", i, &region[..4]);
+    }
+}
+
+fn assert_head(header: Header) {
+    assert_eq!(header.format, Some(Format::R8G8B8A8_UINT));
+    assert_eq!(header.type_size, 1);
+    assert_eq!(header.pixel_width, 1024);
+    assert_eq!(header.pixel_height, 512);
+    assert_eq!(header.pixel_depth, 0);
+    assert_eq!(header.layer_count, 0);
+    assert_eq!(header.face_count, 1);
+    assert_eq!(header.level_count, 11);
+    assert_eq!(header.supercompression_scheme, None);
+}