From f3f25b14693b7211467ae39279b01c580ef8e5b4 Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@digia.com>
Date: Tue, 12 Nov 2013 15:37:57 +0100
Subject: Avoid using GLX pbuffers on fglrx

Task-number: QTBUG-34427
Change-Id: Ief4fe2fe2ab099d4ec61b6bfb2272724dfb2a800
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
---
 src/plugins/platforms/xcb/qglxintegration.cpp | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/plugins/platforms/xcb/qglxintegration.cpp b/src/plugins/platforms/xcb/qglxintegration.cpp
index d05de63c8f..e6fa8fc898 100644
--- a/src/plugins/platforms/xcb/qglxintegration.cpp
+++ b/src/plugins/platforms/xcb/qglxintegration.cpp
@@ -436,11 +436,23 @@ void QGLXContext::queryDummyContext()
     if (oldContext)
         oldSurface = oldContext->surface();
 
-    QOffscreenSurface surface;
-    surface.create();
+    QScopedPointer<QSurface> surface;
+    const char *vendor = glXGetClientString(glXGetCurrentDisplay(), GLX_VENDOR);
+    if (vendor && !strcmp(vendor, "ATI")) {
+        QWindow *window = new QWindow;
+        window->resize(64, 64);
+        window->setSurfaceType(QSurface::OpenGLSurface);
+        window->create();
+        surface.reset(window);
+    } else {
+        QOffscreenSurface *offSurface = new QOffscreenSurface;
+        offSurface->create();
+        surface.reset(offSurface);
+    }
+
     QOpenGLContext context;
     context.create();
-    context.makeCurrent(&surface);
+    context.makeCurrent(surface.data());
 
     const char *renderer = (const char *) glGetString(GL_RENDERER);
 
@@ -452,6 +464,7 @@ void QGLXContext::queryDummyContext()
         }
     }
 
+    context.doneCurrent();
     if (oldContext && oldSurface)
         oldContext->makeCurrent(oldSurface);
 }
-- 
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