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diff --git a/vcl/inc/skia/utils.hxx b/vcl/inc/skia/utils.hxx
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+++ b/vcl/inc/skia/utils.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_UTILS_H
+#define INCLUDED_VCL_INC_SKIA_UTILS_H
+
+#include <vcl/skia/SkiaHelper.hxx>
+
+#include <tools/gen.hxx>
+#include <driverblocklist.hxx>
+
+#include <SkRegion.h>
+#include <tools/sk_app/VulkanWindowContext.h>
+
+namespace SkiaHelper
+{
+// Get the one shared GrContext instance.
+GrContext* getSharedGrContext();
+
+void disableRenderMethod(RenderMethod method);
+
+// Create SkSurface, GPU-backed if possible.
+VCL_DLLPUBLIC sk_sp<SkSurface> createSkSurface(int width, int height,
+                                               SkColorType type = kN32_SkColorType);
+
+inline sk_sp<SkSurface> createSkSurface(const Size& size, SkColorType type = kN32_SkColorType)
+{
+    return createSkSurface(size.Width(), size.Height(), type);
+}
+
+// Create SkImage, GPU-backed if possible.
+VCL_DLLPUBLIC sk_sp<SkImage> createSkImage(const SkBitmap& bitmap);
+
+// Call surface->makeImageSnapshot() and abort on failure.
+VCL_DLLPUBLIC sk_sp<SkImage> makeCheckedImageSnapshot(sk_sp<SkSurface> surface);
+VCL_DLLPUBLIC sk_sp<SkImage> makeCheckedImageSnapshot(sk_sp<SkSurface> surface,
+                                                      const SkIRect& bounds);
+
+// Must be called in any VCL backend before any Skia functionality is used.
+// If not set, Skia will be disabled.
+VCL_DLLPUBLIC void
+    prepareSkia(std::unique_ptr<sk_app::WindowContext> (*createVulkanWindowContext)(bool));
+
+// Shared cache of images.
+void addCachedImage(const OString& key, sk_sp<SkImage> image);
+sk_sp<SkImage> findCachedImage(const OString& key);
+void removeCachedImage(sk_sp<SkImage> image);
+
+#ifdef DBG_UTIL
+void prefillSurface(sk_sp<SkSurface>& surface);
+VCL_DLLPUBLIC void dump(const SkBitmap& bitmap, const char* file);
+VCL_DLLPUBLIC void dump(const sk_sp<SkImage>& image, const char* file);
+VCL_DLLPUBLIC void dump(const sk_sp<SkSurface>& surface, const char* file);
+#endif
+
+extern uint32_t vendorId;
+
+inline DriverBlocklist::DeviceVendor getVendor()
+{
+    return DriverBlocklist::GetVendorFromId(vendorId);
+}
+
+} // namespace
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkRect& rectangle)
+{
+    if (rectangle.isEmpty())
+        return stream << "EMPTY";
+    else
+        return stream << rectangle.width() << 'x' << rectangle.height() << "@(" << rectangle.x()
+                      << ',' << rectangle.y() << ")";
+}
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkIRect& rectangle)
+{
+    if (rectangle.isEmpty())
+        return stream << "EMPTY";
+    else
+        return stream << rectangle.width() << 'x' << rectangle.height() << "@(" << rectangle.x()
+                      << ',' << rectangle.y() << ")";
+}
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkRegion& region)
+{
+    if (region.isEmpty())
+        return stream << "EMPTY";
+    stream << "(";
+    SkRegion::Iterator it(region);
+    for (int i = 0; !it.done(); it.next(), ++i)
+        stream << "[" << i << "] " << it.rect();
+    stream << ")";
+    return stream;
+}
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkImage& image)
+{
+    // G - on GPU
+    return stream << static_cast<const void*>(&image) << " " << Size(image.width(), image.height())
+                  << "/" << (SkColorTypeBytesPerPixel(image.imageInfo().colorType()) * 8)
+                  << (image.isTextureBacked() ? "G" : "");
+}
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const sk_sp<SkImage>& image)
+{
+    return stream << *image;
+}
+
+#endif // INCLUDED_VCL_INC_SKIA_UTILS_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */