LibWeb/WebGL: Set INVALID_OPERATION if object does not belong to context

Author: https://github.com/kalenikaliaksandr
Commit: 07635d4554
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2965

Libraries/LibWeb/WebGL/WebGLObject.cpp

@@ -10,6 +10,8 @@
 #include <LibWeb/Bindings/WebGLObjectPrototype.h>
 #include <LibWeb/WebGL/WebGLObject.h>
 
+#include <GLES2/gl2.h>
+
 namespace Web::WebGL {
 
 WebGLObject::WebGLObject(JS::Realm& realm, WebGLRenderingContextBase& context, GLuint handle)
@@ -33,4 +35,11 @@ void WebGLObject::visit_edges(Visitor& visitor)
     visitor.visit(m_context->gc_cell());
 }
 
+ErrorOr<GLuint> WebGLObject::handle(WebGLRenderingContextBase const* context) const
+{
+    if (context == m_context)
+        return m_handle;
+    return Error::from_errno(GL_INVALID_OPERATION);
+}
+
 }