/usr/include/cegui-0.8.7/CEGUI/RendererModules/OpenGL/Texture.h is in libcegui-mk2-dev 0.8.7-1.3+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | /***********************************************************************
created: Sun Jan 11 2009
author: Paul D Turner
*************************************************************************/
/***************************************************************************
* Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
***************************************************************************/
#ifndef _CEGUIOpenGLTexture_h_
#define _CEGUIOpenGLTexture_h_
#include "../../Base.h"
#include "../../Renderer.h"
#include "../../Texture.h"
#include "CEGUI/RendererModules/OpenGL/RendererBase.h"
#if defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable : 4251)
#endif
// Start of CEGUI namespace section
namespace CEGUI
{
//! Texture implementation for the OpenGLRenderer.
class OPENGL_GUIRENDERER_API OpenGLTexture : public Texture
{
public:
/*!
\brief
set the openGL texture that this Texture is based on to the specified
texture, with the specified size.
*/
void setOpenGLTexture(GLuint tex, const Sizef& size);
/*!
\brief
Return the internal OpenGL texture id used by this Texture object.
\return
id of the OpenGL texture that this object is using.
*/
GLuint getOpenGLTexture() const;
/*!
\brief
set the size of the internal texture.
\param sz
size for the internal texture, in pixels.
\note
Depending upon the hardware capabilities, the actual final size of the
texture may be larger than what is specified when calling this function.
The texture will never be smaller than what you request here. To
discover the actual size, call getSize.
\exception RendererException
thrown if the hardware is unable to support a texture large enough to
fulfill the requested size.
\return
Nothing.
*/
void setTextureSize(const Sizef& sz);
/*!
\brief
Grab the texture to a local buffer.
This will destroy the OpenGL texture, and restoreTexture must be called
before using it again.
*/
void grabTexture();
/*!
\brief
Restore the texture from the locally buffered copy previously create by
a call to grabTexture.
*/
void restoreTexture();
// implement abstract members from base class.
const String& getName() const;
const Sizef& getSize() const;
const Sizef& getOriginalDataSize() const;
const Vector2f& getTexelScaling() const;
void loadFromFile(const String& filename, const String& resourceGroup);
void loadFromMemory(const void* buffer, const Sizef& buffer_size,
PixelFormat pixel_format);
void blitFromMemory(const void* sourceData, const Rectf& area);
void blitToMemory(void* targetData);
bool isPixelFormatSupported(const PixelFormat fmt) const;
protected:
// Friends (to allow construction and destruction)
friend Texture& OpenGLRendererBase::createTexture(const String&);
friend Texture& OpenGLRendererBase::createTexture(const String&, const String&, const String&);
friend Texture& OpenGLRendererBase::createTexture(const String&, const Sizef&);
friend Texture& OpenGLRendererBase::createTexture(const String&, GLuint, const Sizef&);
friend void OpenGLRendererBase::destroyTexture(Texture&);
friend void OpenGLRendererBase::destroyTexture(const String&);
//! Basic constructor.
OpenGLTexture(OpenGLRendererBase& owner, const String& name);
//! Constructor that creates a Texture from an image file.
OpenGLTexture(OpenGLRendererBase& owner, const String& name,
const String& filename, const String& resourceGroup);
//! Constructor that creates a Texture with a given size.
OpenGLTexture(OpenGLRendererBase& owner, const String& name,
const Sizef& size);
//! Constructor that wraps an existing GL texture.
OpenGLTexture(OpenGLRendererBase& owner, const String& name,
GLuint tex, const Sizef& size);
//! Destructor.
virtual ~OpenGLTexture();
//! generate the OpenGL texture and set some initial options.
void generateOpenGLTexture();
//! updates cached scale value used to map pixels to texture co-ords.
void updateCachedScaleValues();
//! clean up the GL texture, or the grab buffer if it had been grabbed
void cleanupOpenGLTexture();
GLint internalFormat() const;
//! initialise the internal format flags for the given CEGUI::PixelFormat.
void initInternalPixelFormatFields(const PixelFormat fmt);
//! internal texture resize function (does not reset format or other fields)
void setTextureSize_impl(const Sizef& sz);
void loadUncompressedTextureBuffer(const Rectf& dest_area,
const GLvoid* buffer) const;
void loadCompressedTextureBuffer(const Rectf& dest_area,
const GLvoid* buffer) const;
GLsizei getCompressedTextureSize(const Sizef& pixel_size) const;
//! The OpenGL texture we're wrapping.
GLuint d_ogltexture;
//! Size of the texture.
Sizef d_size;
//! cached image data for restoring the texture.
uint8* d_grabBuffer;
//! original size of pixel data loaded into texture
Sizef d_dataSize;
//! cached pixel to texel mapping scale values.
Vector2f d_texelScaling;
//! OpenGLRenderer that created and owns this OpenGLTexture
OpenGLRendererBase& d_owner;
//! The name given for this texture.
const String d_name;
//! Texture format
GLenum d_format;
//! Texture subpixel format
GLenum d_subpixelFormat;
//! Whether Texture format is a compressed format
bool d_isCompressed;
};
} // End of CEGUI namespace section
#if defined(_MSC_VER)
# pragma warning(pop)
#endif
#endif // end of guard _CEGUIOpenGLTexture_h_
|