office-gobmx/vcl/inc/opengl/PackedTextureAtlas.hxx
Noel Grandin 6a7a0ac6aa Revert "loplugin:constfields in vcl"
This reverts commit 59887868da.

Change-Id: I0f3f6a7680c78103a559a0f881badc8211b97ace
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/90544
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2020-03-16 09:38:24 +01:00

57 lines
1.8 KiB
C++

/* -*- 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/.
*
*/
#ifndef INCLUDED_VCL_INC_OPENGL_PACKEDTEXTUREATLAS_HXX
#define INCLUDED_VCL_INC_OPENGL_PACKEDTEXTUREATLAS_HXX
#include <memory>
#include <opengl/texture.hxx>
struct PackedTexture;
/**
* Pack textures into one texture atlas.
*
* This is based on algorithm described in [1] and is an
* adaptation of "texture atlas generator" from [2].
*
* [1]: http://www.blackpawn.com/texts/lightmaps/
* [2]: https://github.com/lukaszdk/texture-atlas-generator
*
*/
class VCL_DLLPUBLIC PackedTextureAtlasManager final
{
std::vector<std::unique_ptr<PackedTexture>> maPackedTextures;
int mnTextureWidth;
int mnTextureHeight;
void CreateNewTexture();
PackedTextureAtlasManager( const PackedTextureAtlasManager& ) = delete;
PackedTextureAtlasManager& operator=( const PackedTextureAtlasManager& ) = delete;
public:
/**
* nTextureWidth and nTextureHeight are the dimensions of the common texture(s)
* nTextureLimit is the maximum limit of that a texture atlas can have (0 or less - unlimited)
*/
PackedTextureAtlasManager(int nTextureWidth, int nTextureHeight);
~PackedTextureAtlasManager();
OpenGLTexture InsertBuffer(int nWidth, int nHeight, int nFormat, int nType, sal_uInt8 const * pData);
OpenGLTexture Reserve(int nWidth, int nHeight);
std::vector<GLuint> ReduceTextureNumber(int nMaxNumberOfTextures);
};
#endif // INCLUDED_VCL_INC_OPENGL_PACKEDTEXTUREATLAS_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */