From fe3c0c440e39498d19a07152d4104545c2ba235a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Wed, 2 Jul 2025 23:42:04 +0200
Subject: [PATCH] GL: add an XFAIL for no-attachment framebuffers on GLES Mesa
 20.

---
 src/Magnum/GL/Test/FramebufferGLTest.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Magnum/GL/Test/FramebufferGLTest.cpp b/src/Magnum/GL/Test/FramebufferGLTest.cpp
index 3ad5ea803..d135cee78 100644
--- a/src/Magnum/GL/Test/FramebufferGLTest.cpp
+++ b/src/Magnum/GL/Test/FramebufferGLTest.cpp
@@ -1095,7 +1095,14 @@ void FramebufferGLTest::setDefaultSize() {
         .setDefaultSampleCount(1)
         .setDefaultFixedSampleLocations(false);
 
-    MAGNUM_VERIFY_NO_GL_ERROR();
+    /* Works on Mesa 25, not sure about the versions between */
+    {
+        CORRADE_EXPECT_FAIL_IF(
+            Context::current().version() == Version::GLES310 &&
+            Context::current().versionString().contains("Mesa 20"),
+            "Mesa 20 reports GL ES 3.1 but fails with InvalidEnum.");
+        MAGNUM_VERIFY_NO_GL_ERROR();
+    }
     CORRADE_COMPARE(framebuffer.checkStatus(FramebufferTarget::Draw), Framebuffer::Status::Complete);
 }
 #endif