128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_VCL_INC_OPENGL_TEXTURE_H
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#define INCLUDED_VCL_INC_OPENGL_TEXTURE_H
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#include <GL/glew.h>
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#include <vcl/dllapi.h>
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#include <vcl/salgtype.hxx>
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#include <rtl/ustring.hxx>
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#include <tools/gen.hxx>
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#include <memory>
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#include <vector>
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class ImplOpenGLTexture
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{
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int mnRefCount;
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public:
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GLuint mnTexture;
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int mnWidth;
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int mnHeight;
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GLenum mnFilter;
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GLuint mnOptStencil;
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std::unique_ptr<std::vector<int>> mpSlotReferences;
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std::function<void(int)> mFunctSlotDeallocateCallback;
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ImplOpenGLTexture( int nWidth, int nHeight, bool bAllocate );
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ImplOpenGLTexture( int nWidth, int nHeight, int nFormat, int nType, void const * pData );
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ImplOpenGLTexture( int nX, int nY, int nWidth, int nHeight );
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~ImplOpenGLTexture();
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void Dispose();
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bool InsertBuffer(int nX, int nY, int nWidth, int nHeight, int nFormat, int nType, sal_uInt8* pData);
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void IncreaseRefCount(int nSlotNumber);
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void DecreaseRefCount(int nSlotNumber);
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bool IsUnique()
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{
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return mnRefCount == 1;
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}
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bool InitializeSlotMechanism(int nInitialSlotSize = 0);
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void SetSlotDeallocateCallback(std::function<void(int)> aCallback)
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{
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mFunctSlotDeallocateCallback = aCallback;
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}
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GLuint AddStencil();
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};
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class VCL_DLLPUBLIC OpenGLTexture
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{
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private:
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// if the rect size doesn't match the mpImpl one, this instance
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// is a sub-area from the real OpenGL texture
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Rectangle maRect;
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ImplOpenGLTexture* mpImpl;
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int mnSlotNumber;
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public:
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OpenGLTexture();
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OpenGLTexture(ImplOpenGLTexture* pImpl, Rectangle aRectangle, int nSlotNumber);
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OpenGLTexture( int nWidth, int nHeight, bool bAllocate = true );
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OpenGLTexture( int nWidth, int nHeight, int nFormat, int nType, void const * pData );
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OpenGLTexture( int nX, int nY, int nWidth, int nHeight );
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OpenGLTexture( const OpenGLTexture& rTexture );
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OpenGLTexture( const OpenGLTexture& rTexture, int nX, int nY, int nWidth, int nHeight );
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virtual ~OpenGLTexture();
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bool IsUnique() const;
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GLuint Id() const;
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int GetWidth() const;
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int GetHeight() const;
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void GetCoord( GLfloat* pCoord, const SalTwoRect& rPosAry, bool bInverted=false ) const;
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void GetWholeCoord( GLfloat* pCoord ) const;
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OpenGLTexture GetWholeTexture();
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void Bind();
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void Unbind();
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void Read( GLenum nFormat, GLenum nType, sal_uInt8* pData );
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GLuint AddStencil();
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GLuint StencilId() const;
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bool CopyData(int nWidth, int nHeight, int nFormat, int nType, sal_uInt8* pData);
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void SaveToFile(const OUString& rFileName);
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GLenum GetFilter() const;
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void SetFilter( GLenum nFilter );
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operator bool() const;
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OpenGLTexture& operator=( const OpenGLTexture& rTexture );
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bool operator==( const OpenGLTexture& rTexture ) const;
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bool operator!=( const OpenGLTexture& rTexture ) const;
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template<GLenum type>
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void FillCoords(std::vector<GLfloat>& aCoordVector, const SalTwoRect& rPosAry, bool bInverted) const;
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};
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template<> void OpenGLTexture::FillCoords<GL_TRIANGLES>(
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std::vector<GLfloat>& aCoord, const SalTwoRect& rPosAry, bool bInverted)
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const;
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#endif // INCLUDED_VCL_INC_OPENGL_TEXTURE_H
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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