LibWeb/WebGL: Implement WEBGL_draw_buffers extension

Author: https://github.com/Lubrsi
Commit: 55f7cb4f10
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3239
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/kalenikaliaksandr

Libraries/LibWeb/WebGL/Extensions/WebGLDrawBuffers.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2025, Luke Wilde <luke@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Bindings/PlatformObject.h>
+#include <LibWeb/Forward.h>
+#include <LibWeb/WebGL/Types.h>
+
+namespace Web::WebGL::Extensions {
+
+class WebGLDrawBuffers : public Bindings::PlatformObject {
+    WEB_PLATFORM_OBJECT(WebGLDrawBuffers, Bindings::PlatformObject);
+    GC_DECLARE_ALLOCATOR(WebGLDrawBuffers);
+
+public:
+    static JS::ThrowCompletionOr<GC::Ptr<WebGLDrawBuffers>> create(JS::Realm&, GC::Ref<WebGLRenderingContext>);
+
+    void draw_buffers_webgl(Vector<GLenum> buffers);
+
+protected:
+    void initialize(JS::Realm&) override;
+    void visit_edges(Visitor&) override;
+
+private:
+    WebGLDrawBuffers(JS::Realm&, GC::Ref<WebGLRenderingContext>);
+
+    GC::Ref<WebGLRenderingContext> m_context;
+};
+
+}