Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 73 insertions, 0 deletions

diff --git a/vendor/exr/examples/5c_write_mip_maps.rs b/vendor/exr/examples/5c_write_mip_maps.rs
new file mode 100644
index 0000000..1096c4e
--- /dev/null
+++ b/vendor/exr/examples/5c_write_mip_maps.rs
@@ -0,0 +1,73 @@
+
+extern crate smallvec;
+extern crate rand;
+extern crate half;
+
+
+// exr imports
+extern crate exr;
+
+
+
+/// Writes two layers, each with multiple mip maps.
+/// All mip maps have solid color for brevity.
+fn main() {
+    use exr::prelude::*;
+    use exr::math::RoundingMode;
+    use smallvec::smallvec;
+
+    let full_size = Vec2(512, 512);
+    let size_rounding = RoundingMode::Up;
+
+    let mip_levels_sizes = exr::meta::mip_map_levels(
+        size_rounding, full_size
+    ).collect::<Vec<_>>();
+
+    let red_mip_levels = mip_levels_sizes.iter()
+        .map(|(_index, level_size)|{
+            FlatSamples::F32(vec![0.1_f32; level_size.area() ])
+        })
+        .collect();
+
+    let green_mip_levels = mip_levels_sizes.iter()
+        .map(|(_index, level_size)|{
+            FlatSamples::F32(vec![0.6_f32; level_size.area() ])
+        })
+        .collect();
+
+    let blue_mip_levels = mip_levels_sizes.iter()
+        .map(|(_index, level_size)|{
+            FlatSamples::F32(vec![1.0_f32; level_size.area() ])
+        })
+        .collect();
+
+    let rgb_mip_maps = AnyChannels::sort(smallvec![
+        AnyChannel::new("R", Levels::Mip { level_data: red_mip_levels, rounding_mode: size_rounding }),
+        AnyChannel::new("G", Levels::Mip { level_data: green_mip_levels, rounding_mode: size_rounding }),
+        AnyChannel::new("B", Levels::Mip { level_data: blue_mip_levels, rounding_mode: size_rounding }),
+    ]);
+
+    let layer1 = Layer::new(
+        full_size,
+        LayerAttributes::named("teal rgb"),
+        Encoding::FAST_LOSSLESS,
+        rgb_mip_maps
+    );
+
+    let mut layer2 = layer1.clone();
+    layer2.attributes.layer_name = Some("Copied Layer".into());
+    layer2.encoding = Encoding::SMALL_FAST_LOSSLESS;
+
+    // define the visible area of the canvas
+    let image_attributes = ImageAttributes::new(
+        IntegerBounds::from_dimensions(full_size)
+    );
+
+    let image = Image::empty(image_attributes)
+        .with_layer(layer1).with_layer(layer2);
+
+    println!("writing image...");
+    image.write().to_file("mip_maps.exr").unwrap();
+
+    println!("created file mip_maps.exr");
+}
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