File 0001-Use-glXGetProcAddress-for-context-creation... of Package kwin5

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File 0001-Use-glXGetProcAddress-for-context-creation.patch of Package kwin5 (Revision a0dcbde6c0b021749d7432f340b4cc9c)

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From df552f0499bdf5ba3cc7256b37f0f8d883d24efc Mon Sep 17 00:00:00 2001
From: Fabian Vogt <fabian@ritter-vogt.de>
Date: Sat, 1 Aug 2020 17:34:12 +0200
Subject: [PATCH] Use glXGetProcAddress for context creation

A bug in libepoxy means that functions which are defined in an extension cannot
be called if the current context was lost. Use glXGetProcAddress to bypass the
lib.
---
 plugins/platforms/x11/standalone/glxbackend.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/plugins/platforms/x11/standalone/glxbackend.cpp b/plugins/platforms/x11/standalone/glxbackend.cpp
index 1ea6d4e6b..c10baa53f 100644
--- a/plugins/platforms/x11/standalone/glxbackend.cpp
+++ b/plugins/platforms/x11/standalone/glxbackend.cpp
@@ -337,9 +337,10 @@ bool GlxBackend::initRenderingContext()
             legacy.setVersion(2, 1);
             candidates.emplace_back(std::move(legacy));
         }
+        auto func = (typeof(&glXCreateContextAttribsARB))getProcAddress("glXCreateContextAttribsARB");
         for (auto it = candidates.begin(); it != candidates.end(); it++) {
             const auto attribs = it->build();
-            ctx = glXCreateContextAttribsARB(display(), fbconfig, nullptr, true, attribs.data());
+            ctx = func(display(), fbconfig, nullptr, true, attribs.data());
             if (ctx) {
                 qCDebug(KWIN_X11STANDALONE) << "Created GLX context with attributes:" << &(*it);
                 break;
-- 
2.25.1

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File 0001-Use-glXGetProcAddress-for-context-creation.patch of Package kwin5 (Revision a0dcbde6c0b021749d7432f340b4cc9c)

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