Ensure glDeleteBuffers silently processes non-existent names, per spec.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/library_gl.js b/src/library_gl.js
index d0f1a692..965feae6 100644
--- a/src/library_gl.js
+++ b/src/library_gl.js
@@ -636,6 +636,13 @@ var LibraryGL = {
     for (var i = 0; i < n; i++) {
       var id = {{{ makeGetValue('buffers', 'i*4', 'i32') }}};
       var buffer = GL.buffers[id];
+
+      // From spec: "glDeleteBuffers silently ignores 0's and names that do not
+      // correspond to existing buffer objects."
+      if(buffer === null)
+      {
+        continue;
+      }
       Module.ctx.deleteBuffer(buffer);
       buffer.name = 0;
       GL.buffers[id] = null;