Start working on gltf

Cargo.lock

@@ -297,6 +297,12 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "base64"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
+
 [[package]]
 name = "bit-set"
 version = "0.5.3"
@@ -890,6 +896,44 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "gltf"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad2dcfb6dd7a66f9eb3d181a29dcfb22d146b0bcdc2e1ed1713cbf03939a88ea"
+dependencies = [
+ "base64",
+ "byteorder",
+ "gltf-json",
+ "image",
+ "lazy_static",
+ "urlencoding",
+]
+
+[[package]]
+name = "gltf-derive"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2cbcea5dd47e7ad4e9ee6f040384fcd7204bbf671aa4f9e7ca7dfc9bfa1de20"
+dependencies = [
+ "inflections",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.26",
+]
+
+[[package]]
+name = "gltf-json"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d5b810806b78dde4b71a95cc0e6fdcab34c4c617da3574df166f9987be97d03"
+dependencies = [
+ "gltf-derive",
+ "serde",
+ "serde_derive",
+ "serde_json",
+]
+
 [[package]]
 name = "gpu-alloc"
 version = "0.5.4"
@@ -1041,6 +1085,12 @@ dependencies = [
  "hashbrown 0.14.0",
 ]
 
+[[package]]
+name = "inflections"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a257582fdcde896fd96463bf2d40eefea0580021c0712a0e2b028b60b47a837a"
+
 [[package]]
 name = "instant"
 version = "0.1.12"
@@ -1241,6 +1291,7 @@ name = "lyra-resource"
 version = "0.0.1"
 dependencies = [
  "anyhow",
+ "gltf",
  "image",
  "thiserror",
  "uuid",
@@ -1963,6 +2014,12 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.1"
@@ -1994,6 +2051,28 @@ version = "1.0.185"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be9b6f69f1dfd54c3b568ffa45c310d6973a5e5148fd40cf515acaf38cf5bc31"
 
+[[package]]
+name = "serde_derive"
+version = "1.0.179"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "741e124f5485c7e60c03b043f79f320bff3527f4bbf12cf3831750dc46a0ec2c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.26",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.107"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6b420ce6e3d8bd882e9b243c6eed35dbc9a6110c9769e74b584e0d68d1f20c65"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "sharded-slab"
 version = "0.1.4"
@@ -2371,6 +2450,12 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"
 
+[[package]]
+name = "urlencoding"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
+
 [[package]]
 name = "uuid"
 version = "1.4.1"

lyra-resource/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0.75"
+gltf = "1.3.0"
 image = "0.24.7"
 thiserror = "1.0.48"
 uuid = { version = "1.4.1", features = ["v4"] }

lyra-resource/src/lib.rs

@@ -9,3 +9,6 @@ pub use texture::*;
 
 pub mod loader;
 pub use loader::*;
+
+pub mod model;
+pub use model::*;

lyra-resource/src/loader/mod.rs

@@ -1,6 +1,7 @@
 pub mod texture;
+pub mod model;
 
-use std::{io, sync::Arc, fs::File};
+use std::{io, sync::Arc, fs::File, path::Path, ffi::OsStr};
 
 use thiserror::Error;
 
@@ -15,7 +16,7 @@ pub enum LoaderError {
     UnsupportedExtension(String),
     
     #[error("IOError: '{0}'")]
-    IOError(io::Error),
+    IoError(io::Error),
 
     // From is implemented for this field in each loader module
     #[error("Decoding error: '{0}'")]
@@ -24,12 +25,38 @@ pub enum LoaderError {
 
 impl From<io::Error> for LoaderError {
     fn from(value: io::Error) -> Self {
-        LoaderError::IOError(value)
+        LoaderError::IoError(value)
     }
 }
 
 pub trait ResourceLoader: Send + Sync {
     fn extensions(&self) -> &[&str];
-    fn does_support_file(&self, path: &str) -> bool;
+    
+    fn does_support_file(&self, path: &str) -> bool {
+        match Path::new(path).extension().and_then(OsStr::to_str) {
+            Some(ext) => {
+                self.extensions().contains(&ext)
+            },
+            _ => false,
+        }
+    }
+
     fn load(&self, path: &str) -> Result<Arc<dyn ResourceStorage>, LoaderError>;
 }
+
+
+#[cfg(test)]
+mod tests {
+    use super::{*, texture::TextureLoader};
+
+    /// Ensure that `does_support_file` works
+    #[test]
+    fn check_support() {
+        let loader = TextureLoader::default();
+        let extensions = loader.extensions();
+        let fake_paths: Vec<String> = extensions.iter().map(|e| format!("a.{}", e)).collect();
+        for path in fake_paths.iter() {
+            assert!(loader.does_support_file(&path));
+        }
+    }
+}

lyra-resource/src/loader/model.rs

@@ -0,0 +1,29 @@
+use crate::{ResourceLoader, LoaderError};
+
+impl From<gltf::Error> for LoaderError {
+    fn from(value: gltf::Error) -> Self {
+        LoaderError::DecodingError(value.into())
+    }
+}
+
+#[derive(Default)]
+pub struct ModelLoader;
+
+impl ResourceLoader for ModelLoader {
+    fn extensions(&self) -> &[&str] {
+        &[
+            "gltf"
+        ]
+    }
+
+    fn load(&self, path: &str) -> Result<std::sync::Arc<dyn crate::ResourceStorage>, crate::LoaderError> {
+        // check if the file is supported by this loader
+        if !self.does_support_file(path) {
+            return Err(LoaderError::UnsupportedExtension(path.to_string()));
+        }
+
+        let gltf = gltf::Gltf::open(path)?;
+        
+        todo!()
+    }
+}

lyra-resource/src/loader/texture.rs

@@ -8,7 +8,7 @@ use super::{LoaderError, ResourceLoader};
 
 impl From<ImageError> for LoaderError {
     fn from(value: ImageError) -> Self {
-        LoaderError::DecodingError(anyhow::Error::from(value))
+        LoaderError::DecodingError(value.into())
     }
 }
 
@@ -30,15 +30,6 @@ impl ResourceLoader for TextureLoader {
         ]
     }
 
-    fn does_support_file(&self, path: &str) -> bool {
-        match Path::new(path).extension().and_then(OsStr::to_str) {
-            Some(ext) => {
-                self.extensions().contains(&ext)
-            },
-            _ => false,
-        }
-    }
-
     fn load(&self, path: &str) -> Result<Arc<dyn ResourceStorage>, LoaderError> {
         // check if the file is supported by this loader
         if !self.does_support_file(path) {
@@ -53,7 +44,7 @@ impl ResourceLoader for TextureLoader {
         // load the image and construct Resource<Texture>
         let image = image::load_from_memory(&buf)
             .map_err(|e| match e {
-                ImageError::IoError(e) => LoaderError::IOError(e),
+                ImageError::IoError(e) => LoaderError::IoError(e),
                 _ => LoaderError::DecodingError(e.into()),
             })?;
         let texture = Texture {
@@ -75,17 +66,6 @@ mod tests {
         format!("{manifest}/test_files/img/{path}")
     }
 
-    /// Ensure that `does_support_file` works
-    #[test]
-    fn check_support() {
-        let loader = TextureLoader::default();
-        let extensions = loader.extensions();
-        let fake_paths: Vec<String> = extensions.iter().map(|e| format!("a.{}", e)).collect();
-        for path in fake_paths.iter() {
-            assert!(loader.does_support_file(&path));
-        }
-    }
-
     #[test]
     fn check_unsupport() {
         let loader = TextureLoader::default();

lyra-resource/src/model.rs

@@ -0,0 +1,18 @@
+
+#[repr(C)]
+#[derive(Copy, Clone, Debug)]
+pub struct Vertex {
+    pub position: [f32; 3],
+    pub tex_coords: [f32; 2]
+}
+
+#[derive(Clone)]
+pub struct Mesh {
+    pub vertices: Vec<Vertex>,
+    pub indices: Option<Vec<u16>>,
+}
+
+pub struct Model {
+    pub mesh: Mesh,
+    //pub material
+}

lyra-resource/src/resource_manager.rs

@@ -125,7 +125,7 @@ mod tests {
         assert!(
             match err {
                 // make sure the error is NotFound
-                RequestError::Loader(LoaderError::IOError(e)) if e.kind() == io::ErrorKind::NotFound => true,
+                RequestError::Loader(LoaderError::IoError(e)) if e.kind() == io::ErrorKind::NotFound => true,
                 _ => false
             }
         );