From 253c2317880235fa2ebac72a51ddee63333cf896 Mon Sep 17 00:00:00 2001
From: Mike Welsh <mwelsh@gmail.com>
Date: Sun, 11 Oct 2020 01:18:01 -0700
Subject: [PATCH] webgl: Don't panic when trying to draw unregistered bitmap

Avoids a panic in #1248.
---
 render/webgl/src/lib.rs | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/render/webgl/src/lib.rs b/render/webgl/src/lib.rs
index 9cc1d54d2..0a5ea6c1c 100644
--- a/render/webgl/src/lib.rs
+++ b/render/webgl/src/lib.rs
@@ -1048,12 +1048,14 @@ impl RenderBackend for WebGlRenderBackend {
                     );
                 }
                 DrawType::Bitmap(bitmap) => {
-                    let texture = &self
-                        .textures
-                        .iter()
-                        .find(|(id, _tex)| *id == bitmap.id)
-                        .unwrap()
-                        .1;
+                    let texture = if let Some(texture) =
+                        self.textures.iter().find(|(id, _tex)| *id == bitmap.id)
+                    {
+                        &texture.1
+                    } else {
+                        // Bitmap not registered
+                        continue;
+                    };
 
                     program.uniform_matrix3fv(
                         &self.gl,