# OpenGL Font issue **URL:** \ **Category:** MacOSX and iOS\ **Created:** [October 7, 2025, 8:28am UTC](https://forum.juce.com/t/opengl-font-issue/67313 "2025-10-07T08:28:18Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![otristan](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@otristan](https://forum.juce.com/u/otristan)\ **Post date:** [October 7, 2025, 8:28am UTC](https://forum.juce.com/t/opengl-font-issue/67313/1 "2025-10-07T08:28:18Z")
Hi Juce Team ! After switching to Juce8, I have a very different font rendering between OpenGL and regular renderer for some custom font. Using Juce latest develop. JUCE\_DISABLE\_COREGRAPHICS\_FONT\_SMOOTHING=1 Please note that for those font I use the new setAscentOverride and setDescentOverride and it do not seems to be taken into account by the openGL renderer Thanks ! ![ClassicRenderer](https://us1.discourse-cdn.com/flex026/uploads/juce/original/3X/0/9/0970b37f5b9c405bcabb38d69ac24eb1ca90b66d.jpeg) ![OpenGLRenderer](https://us1.discourse-cdn.com/flex026/uploads/juce/original/3X/b/3/b32e94b81700f24b0656d83918c6f4830b8fcf96.jpeg) ---
**Author:** ![otristan](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@otristan](https://forum.juce.com/u/otristan)\ **Post date:** [October 8, 2025, 8:10am UTC](https://forum.juce.com/t/opengl-font-issue/67313/2 "2025-10-08T08:10:26Z")
Here is a simple IA generated test to reproduce the issue [Main.cpp](https://forum.juce.com/uploads/short-url/oITUezRysTuWvpYtiGuW9vdllAq.cpp) (1.7 KB) [MainComponent.h](https://forum.juce.com/uploads/short-url/bm6MmcvD1S7UvYfteTqs4uvju3k.h) (837 Bytes) [MainComponent.cpp](https://forum.juce.com/uploads/short-url/wywj8hfDkLupiGiUZHyYmGDz15l.cpp) (3.0 KB) [CMakeLists.txt](https://forum.juce.com/uploads/short-url/snDz4QWLdOpWfKBWLWmSrizLnRa.txt) (799 Bytes) ---
**Author:** ![otristan](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@otristan](https://forum.juce.com/u/otristan)\ **Post date:** [October 8, 2025, 9:04am UTC](https://forum.juce.com/t/opengl-font-issue/67313/3 "2025-10-08T09:04:55Z")
![Classic](https://us1.discourse-cdn.com/flex026/uploads/juce/original/3X/4/3/43f18808e080653bdb888c66c383486dedae1a6e.jpeg) ![OpenGL](https://us1.discourse-cdn.com/flex026/uploads/juce/original/3X/5/7/5773401bff7e787a5c3d29a24f72610b1d861db3.jpeg) ---
**Author:** ![otristan](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@otristan](https://forum.juce.com/u/otristan)\ **Post date:** [October 9, 2025, 7:04am UTC](https://forum.juce.com/t/opengl-font-issue/67313/4 "2025-10-09T07:04:48Z")
Claude found the issue ! Summary The Bug: When using Font::setAscentOverride(), the OpenGL and software renderers were ignoring the override values when rendering glyphs. This caused text to be positioned incorrectly. Root Cause: The Typeface::getLayersForGlyph() function was using native font metrics directly without considering the ascent/descent overrides set on the Font object. The Fix: I modified three files: 1. juce\_Typeface.h - Added optional parameters for ascent and descent overrides to getLayersForGlyph() 2. juce\_Typeface.cpp - Updated getLayersForGlyph() implementation to apply the override values before calculating glyph scaling 3. juce\_RenderingHelpers.h - Updated both call sites (glyph cache and drawGlyph) to pass the ascent/descent overrides from the Font object The fix ensures that both the software renderer and OpenGL renderer now properly respect setAscentOverride() and setDescentOverride() values, making text rendering consistent across all rendering backends. [juce-ascent-override-fix.patch](https://forum.juce.com/uploads/short-url/3dNNjdpJnhYIo45xqO9NU5Ebv0V.patch) (4.2 KB) ---
**Author:** ![attila](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/attila/32/11206_2.png) [@attila](https://forum.juce.com/u/attila)\ **Post date:** [October 9, 2025, 2:36pm UTC](https://forum.juce.com/t/opengl-font-issue/67313/5 "2025-10-09T14:36:50Z")
Thank you for reporting. A fix is on the way. ---
**Author:** ![otristan](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@otristan](https://forum.juce.com/u/otristan)\ **Post date:** [October 13, 2025, 6:57am UTC](https://forum.juce.com/t/opengl-font-issue/67313/6 "2025-10-13T06:57:34Z")
git patch on develop [juce-ascent-override-fix-develop.patch](https://forum.juce.com/uploads/short-url/5wxnzh5gHbNsSg3qp2ONROV5J3a.patch) (4.2 KB) ---
**Author:** ![attila](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/attila/32/11206_2.png) [@attila](https://forum.juce.com/u/attila)\ **Post date:** [October 24, 2025, 11:25am UTC](https://forum.juce.com/t/opengl-font-issue/67313/7 "2025-10-24T11:25:44Z")
A fix has been released on `develop` > ---
**Author:** ![otristan](https://avatars.discourse-cdn.com/v4/letter/o/f0a364/32.png) [@otristan](https://forum.juce.com/u/otristan)\ **Post date:** [October 24, 2025, 11:34am UTC](https://forum.juce.com/t/opengl-font-issue/67313/8 "2025-10-24T11:34:02Z")
> [@attila](#): > > [https://github.com/juce-framework/JUCE/commit/b72343cf8c0876330d682e9d34d6a8b0abf9513b](https://github.com/juce-framework/JUCE/commit/b72343cf8c0876330d682e9d34d6a8b0abf9513b) looks good. Thanks !