trying to get a GL context after GL de-initialization - fixed

Change-Id: I5f38f72b0e2c0204875d0dfbb759d6b13415560a
Reviewed-on: https://gerrit.libreoffice.org/23433
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Tested-by: Michael Meeks <michael.meeks@collabora.com>

1 files changed, 25 insertions, 14 deletions

diff --git a/vcl/opengl/texture.cxx b/vcl/opengl/texture.cxx
index 7f047e580312..ffaaf092387d 100644
--- a/vcl/opengl/texture.cxx
+++ b/vcl/opengl/texture.cxx
@@ -161,26 +161,37 @@ void ImplOpenGLTexture::Dispose()
 {
     if( mnTexture != 0 )
     {
-        OpenGLVCLContextZone aContextZone;
+        // During shutdown GL is already de-initialized, so we should not try to create a new context.
+        OpenGLZone aZone;
+        rtl::Reference<OpenGLContext> xContext = OpenGLContext::getVCLContext(false);
+        if( xContext.is() )
+        {
+            // FIXME: this is really not optimal performance-wise.
 
-        // FIXME: this is really not optimal performance-wise.
+            // Check we have been correctly un-bound from all framebuffers.
+            ImplSVData* pSVData = ImplGetSVData();
+            rtl::Reference<OpenGLContext> pContext = pSVData->maGDIData.mpLastContext;
 
-        // Check we have been correctly un-bound from all framebuffers.
-        ImplSVData* pSVData = ImplGetSVData();
-        rtl::Reference<OpenGLContext> pContext = pSVData->maGDIData.mpLastContext;
-        if( pContext.is() )
-        {
-            pContext->makeCurrent();
-            pContext->UnbindTextureFromFramebuffers( mnTexture );
-        }
+            if( pContext.is() )
+            {
+                pContext->makeCurrent();
+                pContext->UnbindTextureFromFramebuffers( mnTexture );
+            }
 
-        if( mnOptStencil != 0 )
+            if( mnOptStencil != 0 )
+            {
+                glDeleteRenderbuffers( 1, &mnOptStencil );
+                mnOptStencil = 0;
+            }
+            glDeleteTextures( 1, &mnTexture );
+
+            mnTexture = 0;
+        }
+        else
         {
-            glDeleteRenderbuffers( 1, &mnOptStencil );
             mnOptStencil = 0;
+            mnTexture = 0;
         }
-        glDeleteTextures( 1, &mnTexture );
-        mnTexture = 0;
     }
 }