‘glGetUniformLocation for named uniform block’ bug fixed

Author: Jura-Z

src/library_gl.js

@@ -699,16 +699,19 @@ var LibraryGL = {
         // only store the string 'colors' in utable, and 'colors[0]', 'colors[1]' and 'colors[2]' will be parsed as 'colors'+i.
         // Note that for the GL.uniforms table, we still need to fetch the all WebGLUniformLocations for all the indices.
         var loc = GLctx.getUniformLocation(p, name);
-        var id = GL.getNewId(GL.uniforms);
-        utable[name] = [u.size, id];
-        GL.uniforms[id] = loc;
+        if (loc != null)
+        {
+          var id = GL.getNewId(GL.uniforms);
+          utable[name] = [u.size, id];
+          GL.uniforms[id] = loc;
 
-        for (var j = 1; j < u.size; ++j) {
-          var n = name + '['+j+']';
-          loc = GLctx.getUniformLocation(p, n);
-          id = GL.getNewId(GL.uniforms);
+          for (var j = 1; j < u.size; ++j) {
+            var n = name + '['+j+']';
+            loc = GLctx.getUniformLocation(p, n);
+            id = GL.getNewId(GL.uniforms);
 
-          GL.uniforms[id] = loc;
+            GL.uniforms[id] = loc;
+          }
         }
       }
     }