From 67d0122c798b8f101c840fee2b697393f1ceab09 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Sat, 19 Apr 2025 12:07:39 +0200
Subject: [PATCH] DebugTools: add a TODO.

---
 src/Magnum/DebugTools/TextureImage.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Magnum/DebugTools/TextureImage.cpp b/src/Magnum/DebugTools/TextureImage.cpp
index 56b65a4fb..c7c496d6f 100644
--- a/src/Magnum/DebugTools/TextureImage.cpp
+++ b/src/Magnum/DebugTools/TextureImage.cpp
@@ -239,6 +239,12 @@ GL::BufferImage2D textureSubImage(GL::Texture2D& texture, const Int level, const
 #endif
 
 void textureSubImage(GL::CubeMapTexture& texture, const GL::CubeMapCoordinate coordinate, const Int level, const Range2Di& range, Image2D& image) {
+    /* Compared to textureSubImage(GL::CubeMapTexture&, ..., Image3D&), here's
+       no ARB_get_texture_sub_image code path because it only works with 3D
+       images */
+    /** @todo implement a Image3D variant with this extension used once
+        convenient Image slicing and direct allocation is done */
+
     GL::Framebuffer fb{range};
     fb.attachCubeMapTexture(GL::Framebuffer::ColorAttachment{0}, texture, coordinate, level);