1 files changed, 60 insertions, 0 deletions
diff --git a/vcl/opengl/win/winlayout.cxx b/vcl/opengl/win/winlayout.cxx
new file mode 100644
index 000000000..59bf12c25
--- /dev/null
+++ b/vcl/opengl/win/winlayout.cxx
@@ -0,0 +1,60 @@
+/* -*- 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/.
+ */
+
+#include <opengl/win/winlayout.hxx>
+
+#include <opengl/win/gdiimpl.hxx>
+
+bool OpenGLGlobalWinGlyphCache::AllocateTexture(WinGlyphDrawElement& rElement, CompatibleDC* dc)
+{
+    assert(rElement.maTexture.get() == nullptr);
+    assert(dynamic_cast<OpenGLCompatibleDC*>(dc));
+    OpenGLCompatibleDC* odc = static_cast<OpenGLCompatibleDC*>(dc);
+    OpenGLCompatibleDC::Texture* texture = new OpenGLCompatibleDC::Texture;
+    rElement.maTexture.reset(texture);
+    texture->texture = maPackedTextureAtlas.Reserve(dc->getBitmapWidth(), dc->getBitmapHeight());
+    if (!texture->texture)
+        return false;
+    if (!odc->copyToTexture(*rElement.maTexture))
+        return false;
+    return true;
+}
+
+void OpenGLGlobalWinGlyphCache::Prune()
+{
+    std::vector<GLuint> aTextureIDs = maPackedTextureAtlas.ReduceTextureNumber(8);
+    if (!aTextureIDs.empty())
+    {
+        for (auto& pWinGlyphCache : maWinGlyphCaches)
+            static_cast<OpenGLWinGlyphCache*>(pWinGlyphCache)->RemoveTextures(aTextureIDs);
+    }
+}
+
+void OpenGLWinGlyphCache::RemoveTextures(std::vector<GLuint>& rTextureIDs)
+{
+    auto it = maWinTextureCache.begin();
+
+    while (it != maWinTextureCache.end())
+    {
+        assert(dynamic_cast<OpenGLCompatibleDC::Texture*>(it->second.maTexture.get()));
+        GLuint nTextureID
+            = static_cast<OpenGLCompatibleDC::Texture*>(it->second.maTexture.get())->texture.Id();
+
+        if (std::find(rTextureIDs.begin(), rTextureIDs.end(), nTextureID) != rTextureIDs.end())
+        {
+            it = maWinTextureCache.erase(it);
+        }
+        else
+        {
+            ++it;
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */