scene: Port away from GLTexture::update(QImage, QPoint, QRect) overload

src/scene/imageitem.cpp

@@ -56,7 +56,7 @@ void ImageItemOpenGL::preprocess()
             m_texture->setFilter(GL_LINEAR);
             m_texture->setWrapMode(GL_CLAMP_TO_EDGE);
         } else {
-            m_texture->update(m_image);
+            m_texture->update(m_image, m_image.rect());
         }
     }
 }

src/scene/workspacescene_opengl.cpp

@@ -419,7 +419,7 @@ void SceneOpenGLDecorationRenderer::renderPart(const QRect &rect, const QRect &p
     if (padding.left() == 0) {
         dirtyOffset.rx() += TexturePad;
     }
-    m_texture->update(image, textureOffset + dirtyOffset);
+    m_texture->update(image, image.rect(), textureOffset + dirtyOffset);
 }
 
 const QMargins SceneOpenGLDecorationRenderer::texturePadForPart(