engine: image loading

engine/BUILD

@@ -13,6 +13,7 @@ rust_binary(
         "src/render/mod.rs",
         "src/render/renderable.rs",
         "src/render/vulkan/data.rs",
+        "src/render/vulkan/images.rs",
         "src/render/vulkan/mod.rs",
         "src/render/vulkan/pipeline.rs",
         "src/render/vulkan/qfi.rs",
@@ -21,10 +22,12 @@ rust_binary(
         "src/render/vulkan/swapchain_binding.rs",
         "src/render/vulkan/worker.rs",
         "src/util/counter.rs",
+        "src/util/file.rs",
         "src/util/mod.rs",
     ],
     deps = [
         "//third_party/cargo:cgmath",
+        "//third_party/cargo:image",
         "//third_party/cargo:winit",
         "//third_party/cargo:log",
         "//third_party/cargo:env_logger",

engine/src/render/vulkan/images.rs

@@ -0,0 +1,32 @@
+use std::sync::Arc;
+
+use image;
+use image::GenericImageView;
+
+use vulkano::image as vm;
+use vulkano::format as vf;
+use vulkano::sync::GpuFuture;
+
+pub fn load_texture<WT: 'static + Send + Sync>(
+    surface_binding: &super::surface_binding::SurfaceBinding<WT>,
+    name: String,
+) -> Arc<vm::ImmutableImage<vf::Format>> {
+    let path = &crate::util::file::resource_path(name);
+
+    let image = image::open(path).unwrap();
+    let width = image.width();
+    let height = image.height();
+
+    let image_rgba = image.to_rgba();
+    let (image_view, future) = vm::ImmutableImage::from_iter(
+        image_rgba.into_raw().iter().cloned(),
+        vm::Dimensions::Dim2d{ width, height },
+        vf::Format::R8G8B8A8Unorm,
+        surface_binding.graphics_queue.clone()
+    ).unwrap();
+
+    future.flush().unwrap();
+
+    image_view
+}
+

engine/src/render/vulkan/mod.rs

@@ -18,6 +18,7 @@ mod qfi;
 mod shaders;
 mod swapchain_binding;
 mod worker;
+pub mod images;
 
 use crate::render::renderable;