From 7100e3b6d8618a13b60bd865266b2ede428ccf3b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Mon, 11 May 2020 21:04:33 +0200
Subject: [PATCH] Revert "Platform: choose a GLXFBConfig with a pbuffer."

Caused an error when creating a WindowlessGlxApplication on a Mesa with
just llvmpipe. Note to self: never again try to fix anything related to
Xlib that's not broken.

This reverts commit 511d0c1b27462598cc93f2ec371f7ff91f792e33.
---
 src/Magnum/Platform/WindowlessGlxApplication.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/Magnum/Platform/WindowlessGlxApplication.cpp b/src/Magnum/Platform/WindowlessGlxApplication.cpp
index b6c7bf0e4..56db047a8 100644
--- a/src/Magnum/Platform/WindowlessGlxApplication.cpp
+++ b/src/Magnum/Platform/WindowlessGlxApplication.cpp
@@ -85,13 +85,9 @@ WindowlessGlxContext::WindowlessGlxContext(const WindowlessGlxContext::Configura
         return;
     }
 
-    /* Choose a config that supports a pbuffer (by default it's GLX_WINDOW_BIT
-       which we don't need at all) */
+    /* Choose config */
     int configCount = 0;
-    constexpr static const int fbAttributes[] = {
-        GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
-        None
-    };
+    constexpr static const int fbAttributes[] = { None };
     GLXFBConfig* configs = glXChooseFBConfig(_display, DefaultScreen(_display), fbAttributes, &configCount);
     if(!configCount) {
         Error() << "Platform::WindowlessGlxContext: no supported framebuffer configuration found";