From 3c9f7c4eb1346e2fc0c39306d6b28f261b4ccbcc Mon Sep 17 00:00:00 2001
From: c-u <christian.usinger@gmail.com>
Date: Sun, 6 Aug 2023 17:37:42 +0200
Subject: [PATCH] Add Interpolation attribute for the VertexOutput and add
 Error trait implementation for RenderError (#49)

* impl trait Error for RenderError

* fix shader for usage in web
---
 src/error.rs    | 2 ++
 src/shader.wgsl | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/error.rs b/src/error.rs
index 0de51f9..5bc30a6 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -40,3 +40,5 @@ impl Display for RenderError {
         }
     }
 }
+
+impl Error for RenderError {}
diff --git a/src/shader.wgsl b/src/shader.wgsl
index b60c8b6..53f78ce 100644
--- a/src/shader.wgsl
+++ b/src/shader.wgsl
@@ -12,7 +12,7 @@ struct VertexOutput {
     @invariant @builtin(position) position: vec4<f32>,
     @location(0) color: vec4<f32>,
     @location(1) uv: vec2<f32>,
-    @location(2) content_type: u32,
+    @location(2) @interpolate(flat) content_type: u32,
 };
 
 struct Params {