diff --git a/ext/ghoul b/ext/ghoul
index f5c64aca95..7a0f5ee29a 160000
--- a/ext/ghoul
+++ b/ext/ghoul
@@ -1 +1 @@
-Subproject commit f5c64aca9511a9cbc99b3e6c8dae610a8f280102
+Subproject commit 7a0f5ee29ad62240bd891eb32f55cdbb27df90ed
diff --git a/src/rendering/renderablevolumeexpert.cpp b/src/rendering/renderablevolumeexpert.cpp
index fa7d1048f6..7b0d3644ec 100644
--- a/src/rendering/renderablevolumeexpert.cpp
+++ b/src/rendering/renderablevolumeexpert.cpp
@@ -206,7 +206,7 @@ bool RenderableVolumeExpert::initialize() {
     for (int i = 0; i < _volumePaths.size(); ++i) {
         ghoul::RawVolumeReader rawReader(_volumeHints.at(i));
         ghoul::opengl::Texture* volume = rawReader.read(_volumePaths.at(i));
-        volume->uploadTexture();
+//        volume->uploadTexture();
         cl_mem volumeTexture = _context.createTextureFromGLTexture(CL_MEM_READ_ONLY, *volume);
 
         _volumes.push_back(volume);
@@ -293,7 +293,6 @@ bool RenderableVolumeExpert::deinitialize() {
 }
 
 void RenderableVolumeExpert::render(const Camera *camera, const psc &thisPosition) {
-
     if( ! _kernel.isValidKernel())
         return;
     
@@ -304,16 +303,30 @@ void RenderableVolumeExpert::render(const Camera *camera, const psc &thisPositio
     double factor = pow(10.0,thisPosition[3]);
     transform = glm::translate(transform, glm::vec3(thisPosition[0]*factor, thisPosition[1]*factor, thisPosition[2]*factor));
 	transform = glm::rotate(transform, time*speed, glm::vec3(0.0f, 1.0f, 0.0f));
-	
+
     _colorBoxRenderer->render(transform);
     
     _textureLock->lock();
     _kernelLock->lock();
     glFinish();
     
+    // Aquire GL objects
+    _commands.enqueueAcquireGLObjects(_clBackTexture);
+    _commands.enqueueAcquireGLObjects(_clFrontTexture);
+    _commands.enqueueAcquireGLObjects(_clOutput);
+    _commands.enqueueAcquireGLObjects(_clVolumes);
+    _commands.enqueueAcquireGLObjects(_clTransferFunctions);
+
     _commands.enqueueKernelBlocking(_kernel, *_ws);
     _commands.finish();
-    
+
+    // Release GL objects
+    _commands.enqueueReleaseGLObjects(_clBackTexture);
+    _commands.enqueueReleaseGLObjects(_clFrontTexture);
+    _commands.enqueueReleaseGLObjects(_clOutput);
+    _commands.enqueueReleaseGLObjects(_clVolumes);
+	_commands.enqueueReleaseGLObjects(_clTransferFunctions);
+
     _quadProgram->activate();
     glActiveTexture(GL_TEXTURE0);
     _output->bind();
@@ -322,6 +335,7 @@ void RenderableVolumeExpert::render(const Camera *camera, const psc &thisPositio
     glBindVertexArray(_screenQuad);
     glDrawArrays(GL_TRIANGLES, 0, 6);
     glBindVertexArray(0);
+
     _kernelLock->unlock();
     _textureLock->unlock();
     
@@ -449,4 +463,4 @@ void RenderableVolumeExpert::safeUpdateTexture(const ghoul::filesystem::File& fi
     }
 }
 	
-} // namespace openspace
\ No newline at end of file
+} // namespace openspace