1 files changed, 14 insertions, 8 deletions

diff --git a/src/graphics.rs b/src/graphics.rs
index d933c8b..6fa13b3 100644
--- a/src/graphics.rs
+++ b/src/graphics.rs
@@ -2,7 +2,7 @@ use std::{borrow::Cow, sync::Arc};
 use wgpu::*;
 use winit::{dpi::PhysicalSize, event_loop::OwnedDisplayHandle, window::Window};
 
-pub enum RenderResult {
+pub enum AcquireSurfaceTextureResult {
     Ok(SurfaceTexture),
     ShouldSkip,
     Lost,
@@ -42,6 +42,9 @@ impl Renderer {
             .map_err(|e| e.to_string())?;
 
         let surface_cap = surface.get_capabilities(&adapter);
+        if surface_cap.formats.is_empty() {
+            return Err("no surface format found".to_string());
+        }
 
         let (surface_format, view_format) = decide_surface_and_view_format(&adapter, &surface_cap);
 
@@ -110,24 +113,25 @@ impl Renderer {
         Ok(v)
     }
 
-    pub fn get_current_texture(&self, window: &Window) -> RenderResult {
+    pub fn get_current_texture(&self, window: &Window) -> AcquireSurfaceTextureResult {
         match self.surface.get_current_texture() {
-            CurrentSurfaceTexture::Success(v) => RenderResult::Ok(v),
+            CurrentSurfaceTexture::Success(v) => AcquireSurfaceTextureResult::Ok(v),
             CurrentSurfaceTexture::Suboptimal(v) => {
                 // NOTE: 取得したテクスチャが生存した状態でサーフェスを再設定すると
                 //       `PreviousOutputExists`エラーになるので、
                 //       破棄した上で再設定し、描画をスキップする。
                 drop(v);
                 self.configure_surface(window.inner_size());
-                RenderResult::ShouldSkip
+                AcquireSurfaceTextureResult::ShouldSkip
             }
-            CurrentSurfaceTexture::Occluded => RenderResult::ShouldSkip,
-            CurrentSurfaceTexture::Timeout => RenderResult::ShouldSkip,
+            CurrentSurfaceTexture::Occluded => AcquireSurfaceTextureResult::ShouldSkip,
+            CurrentSurfaceTexture::Timeout => AcquireSurfaceTextureResult::ShouldSkip,
             CurrentSurfaceTexture::Outdated => {
                 self.configure_surface(window.inner_size());
-                RenderResult::ShouldSkip
+                AcquireSurfaceTextureResult::ShouldSkip
             }
-            CurrentSurfaceTexture::Lost => RenderResult::Lost,
+            CurrentSurfaceTexture::Lost => AcquireSurfaceTextureResult::Lost,
+            // TODO: 一応対応する。
             CurrentSurfaceTexture::Validation => unreachable!(),
         }
     }
@@ -158,6 +162,8 @@ impl Renderer {
 
         render_pass.set_pipeline(&self.pipeline);
 
+        // TODO: 描画
+
         drop(render_pass);
 
         self.queue.submit([encoder.finish()]);