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| -rw-r--r-- | vcl/inc/opengl/texture.hxx | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/vcl/inc/opengl/texture.hxx b/vcl/inc/opengl/texture.hxx new file mode 100644 index 000000000..0438b9af1 --- /dev/null +++ b/vcl/inc/opengl/texture.hxx @@ -0,0 +1,139 @@ +/* -*- 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_OPENGL_TEXTURE_H +#define INCLUDED_VCL_INC_OPENGL_TEXTURE_H + +#include <epoxy/gl.h> +#include <vcl/dllapi.h> +#include <vcl/salgtype.hxx> +#include <rtl/ustring.hxx> +#include <tools/gen.hxx> + +#include <functional> +#include <memory> +#include <vector> + +class ImplOpenGLTexture +{ +public: + GLuint mnTexture; + int mnWidth; + int mnHeight; + GLenum mnFilter; + GLuint mnOptStencil; + + std::unique_ptr<std::vector<int>> mpSlotReferences; + std::function<void(int)> mFunctSlotDeallocateCallback; + + ImplOpenGLTexture( int nWidth, int nHeight, bool bAllocate ); + ImplOpenGLTexture( int nWidth, int nHeight, int nFormat, int nType, void const * pData ); + ImplOpenGLTexture( int nX, int nY, int nWidth, int nHeight ); + ~ImplOpenGLTexture(); + + bool InsertBuffer(int nX, int nY, int nWidth, int nHeight, int nFormat, int nType, sal_uInt8 const * pData); + + void IncreaseRefCount(int nSlotNumber); + void DecreaseRefCount(int nSlotNumber); + + void InitializeSlotMechanism(int nInitialSlotSize); + + void SetSlotDeallocateCallback(std::function<void(int)> aCallback) + { + mFunctSlotDeallocateCallback = aCallback; + } + + void ResetSlotDeallocateCallback() + { + mFunctSlotDeallocateCallback = std::function<void(int)>(); + } + + GLuint AddStencil(); +}; + +class VCL_DLLPUBLIC OpenGLTexture final +{ +private: + // if the rect size doesn't match the mpImpl one, this instance + // is a sub-area from the real OpenGL texture + tools::Rectangle maRect; + std::shared_ptr<ImplOpenGLTexture> mpImpl; + int mnSlotNumber; + + inline void GetTextureRect(const SalTwoRect& rPosAry, GLfloat& x1, GLfloat& x2, GLfloat& y1, GLfloat& y2) const; + + bool IsValid() const + { + return (mpImpl && mpImpl->mnTexture != 0); + } + +public: + OpenGLTexture(); + OpenGLTexture(const std::shared_ptr<ImplOpenGLTexture>& pImpl, tools::Rectangle aRectangle, int nSlotNumber); + + OpenGLTexture( int nWidth, int nHeight, bool bAllocate = true ); + OpenGLTexture( int nWidth, int nHeight, int nFormat, int nType, void const * pData ); + OpenGLTexture( int nX, int nY, int nWidth, int nHeight ); + OpenGLTexture( const OpenGLTexture& rTexture ); + OpenGLTexture( OpenGLTexture&& rTexture ) noexcept; + OpenGLTexture( const OpenGLTexture& rTexture, int nX, int nY, int nWidth, int nHeight ); + ~OpenGLTexture(); + + bool IsUnique() const; + + GLuint Id() const; + int GetWidth() const; + int GetHeight() const; + + void GetCoord( GLfloat* pCoord, const SalTwoRect& rPosAry, bool bInverted=false ) const; + void GetWholeCoord( GLfloat* pCoord ) const; + void Bind(); + void Unbind(); + void Read( GLenum nFormat, GLenum nType, sal_uInt8* pData ); + GLuint AddStencil(); + GLuint StencilId() const; + + bool CopyData(int nWidth, int nHeight, int nFormat, int nType, sal_uInt8 const * pData); + + void SaveToFile(const OUString& rFileName); + + GLenum GetFilter() const; + void SetFilter( GLenum nFilter ); + + operator bool() const; + OpenGLTexture& operator=( const OpenGLTexture& rTexture ); + OpenGLTexture& operator=( OpenGLTexture&& rTexture ); + bool operator==( const OpenGLTexture& rTexture ) const; + bool operator!=( const OpenGLTexture& rTexture ) const; + + template<GLenum type> + void FillCoords(std::vector<GLfloat>& aCoordVector, const SalTwoRect& rPosAry) const; +}; + +template<> void OpenGLTexture::FillCoords<GL_TRIANGLES>( + std::vector<GLfloat>& aCoord, const SalTwoRect& rPosAry) + const; + +template<> void OpenGLTexture::FillCoords<GL_TRIANGLE_FAN>( + std::vector<GLfloat>& aCoord, const SalTwoRect& rPosAry) + const; + +#endif // INCLUDED_VCL_INC_OPENGL_TEXTURE_H + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |