From cb1e800279550d125f02c1487f231132caef0fcc Mon Sep 17 00:00:00 2001
From: Sergiusz Bazanski <q3k@q3k.org>
Date: Sat, 4 Apr 2020 22:18:37 +0200
Subject: [PATCH] engine: image loading

---
 engine/BUILD                       |  3 +++
 engine/src/render/vulkan/images.rs | 32 ++++++++++++++++++++++++++++++
 engine/src/render/vulkan/mod.rs    |  1 +
 3 files changed, 36 insertions(+)
 create mode 100644 engine/src/render/vulkan/images.rs

diff --git a/engine/BUILD b/engine/BUILD
index 9082cd1..dc1ce44 100644
--- a/engine/BUILD
+++ b/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",
diff --git a/engine/src/render/vulkan/images.rs b/engine/src/render/vulkan/images.rs
new file mode 100644
index 0000000..7d6553d
--- /dev/null
+++ b/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
+}
+
diff --git a/engine/src/render/vulkan/mod.rs b/engine/src/render/vulkan/mod.rs
index a9853dd..a987b75 100644
--- a/engine/src/render/vulkan/mod.rs
+++ b/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;