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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /canvas/inc/rendering/isurfaceproxymanager.hxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | canvas/inc/rendering/isurfaceproxymanager.hxx | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/canvas/inc/rendering/isurfaceproxymanager.hxx b/canvas/inc/rendering/isurfaceproxymanager.hxx new file mode 100644 index 000000000..71b12b29e --- /dev/null +++ b/canvas/inc/rendering/isurfaceproxymanager.hxx @@ -0,0 +1,66 @@ +/* -*- 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 . + */ + +#pragma once + +#include <canvas/canvastoolsdllapi.h> +#include <memory> + +namespace canvas +{ + struct ISurfaceProxy; + struct IColorBuffer; + struct IRenderModule; + + /** Manager interface, which handles surface proxy objects. + + Typically, each canvas instantiation has one + SurfaceProxyManager object, to handle their surfaces. Surfaces + itself are opaque objects, which encapsulate a framebuffer to + render upon, plus an optional (possibly accelerated) texture. + */ + struct ISurfaceProxyManager + { + virtual ~ISurfaceProxyManager() {} + + /** Create a surface proxy for a color buffer. + + The whole idea is build around the concept that you create + some arbitrary buffer which contains the image data and + tell the texture manager about it. From there on you can + draw into this image using any kind of graphics api you + want. In the technical sense we allocate some space in + local videomemory or AGP memory which will be filled on + demand, which means if there exists any rendering + operation that needs to read from this memory location. + This method creates a logical hardware surface object + which uses the given color buffer as the image source. + Internally this texture may even be distributed to several + real hardware surfaces. + */ + virtual std::shared_ptr< ISurfaceProxy > createSurfaceProxy( + const std::shared_ptr<IColorBuffer>& pBuffer ) const = 0; + }; + + /** Create a surface proxy for the given render module. + */ + CANVASTOOLS_DLLPUBLIC std::shared_ptr<ISurfaceProxyManager> createSurfaceProxyManager( const std::shared_ptr<IRenderModule>& rRenderModule ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |