From 6a8a93a2a19dd4eaf649b6384be8986c201406f5 Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@qt.io>
Date: Thu, 11 May 2017 13:49:01 +0200
Subject: [PATCH] QOpenGLTexturePrivate::destroy(): Make error messages more
 verbose

Distinguish missing and non-sharing contexts, output values.

Change-Id: If52555098c1b46e6016e00f9dbbfad8e4b5d3a2d
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
---
 src/gui/opengl/qopengltexture.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/gui/opengl/qopengltexture.cpp b/src/gui/opengl/qopengltexture.cpp
index 766d4a327a..4d0ba212ab 100644
--- a/src/gui/opengl/qopengltexture.cpp
+++ b/src/gui/opengl/qopengltexture.cpp
@@ -190,11 +190,20 @@ void QOpenGLTexturePrivate::destroy()
         return;
     }
     QOpenGLContext *currentContext = QOpenGLContext::currentContext();
-    if (!currentContext || !QOpenGLContext::areSharing(currentContext, context)) {
-        qWarning("Texture is not valid in the current context.\n"
+    if (!currentContext) {
+        qWarning("QOpenGLTexturePrivate::destroy() called without a current context.\n"
                  "Texture has not been destroyed");
         return;
     }
+    if (!QOpenGLContext::areSharing(currentContext, context)) {
+
+        qWarning("QOpenGLTexturePrivate::destroy() called but texture context %p"
+                 " is not shared with current context %p.\n"
+                 "Texture has not been destroyed",
+                 static_cast<const void *>(context),
+                 static_cast<const void *>(currentContext));
+        return;
+    }
 
     functions->glDeleteTextures(1, &textureId);