12226e4371
and passed as paramters into straight forward non const built in types, i.e. const bool foogbar(const int) becomes bool foobar(int).
127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
|
|
//Distributed under the terms of the GNU Library General Public License (LGPL)
|
|
//as published by the Free Software Foundation.
|
|
|
|
// -*-c++-*-
|
|
|
|
#ifndef OSG_TEXTURE1D
|
|
#define OSG_TEXTURE1D 1
|
|
|
|
#include <osg/Texture>
|
|
|
|
namespace osg {
|
|
|
|
/** Texture state class which encapsulates OpenGl 1D texture functionality.*/
|
|
class SG_EXPORT Texture1D : public Texture
|
|
{
|
|
|
|
public :
|
|
|
|
Texture1D();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
Texture1D(const Texture1D& text,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
|
|
|
|
META_StateAttribute(osg, Texture1D,TEXTURE);
|
|
|
|
/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
|
|
virtual int compare(const StateAttribute& rhs) const;
|
|
|
|
virtual void getAssociatedModes(std::vector<GLMode>& modes) const
|
|
{
|
|
modes.push_back(GL_TEXTURE_1D);
|
|
}
|
|
|
|
/** Set the texture image. */
|
|
void setImage(Image* image);
|
|
|
|
/** Get the texture image. */
|
|
Image* getImage() { return _image.get(); }
|
|
|
|
/** Get the const texture image. */
|
|
inline const Image* getImage() const { return _image.get(); }
|
|
|
|
|
|
/** Set the texture width and height. If width or height are zero then
|
|
* the repsective size value is calculated from the source image sizes. */
|
|
inline void setTextureSize(int width) const
|
|
{
|
|
_textureWidth = width;
|
|
}
|
|
|
|
/** Get the texture subload width. */
|
|
inline void getTextureSize(int& width) const
|
|
{
|
|
width = _textureWidth;
|
|
}
|
|
|
|
|
|
class SubloadCallback : public Referenced
|
|
{
|
|
public:
|
|
virtual void load(const Texture1D& texture,State& state) const = 0;
|
|
virtual void subload(const Texture1D& texture,State& state) const = 0;
|
|
};
|
|
|
|
void setSubloadCallback(SubloadCallback* cb) { _subloadCallback = cb;; }
|
|
|
|
SubloadCallback* getSubloadCallback() { return _subloadCallback.get(); }
|
|
|
|
const SubloadCallback* getSubloadCallback() const { return _subloadCallback.get(); }
|
|
|
|
|
|
/** Set the number of mip map levels the the texture has been created with,
|
|
should only be called within an osg::Texuture::apply() and custom OpenGL texture load.*/
|
|
void setNumMipmapLevels(unsigned int num) const { _numMimpmapLevels=num; }
|
|
|
|
/** Get the number of mip map levels the the texture has been created with.*/
|
|
unsigned int getNumMipmapLevels() const { return _numMimpmapLevels; }
|
|
|
|
|
|
/** Copy pixels into a 1D texture image.As per glCopyTexImage1D.
|
|
* Creates an OpenGL texture object from the current OpenGL background
|
|
* framebuffer contents at pos \a x, \a y with width \a width. \a width must be a power of two.
|
|
*/
|
|
void copyTexImage1D(State& state, int x, int y, int width);
|
|
|
|
/** Copy a one-dimensional texture subimage. As per glCopyTexSubImage1D.
|
|
* Updates portion of an existing OpenGL texture object from the current OpenGL background
|
|
* framebuffer contents at pos \a x, \a y with width \a width.
|
|
*/
|
|
void copyTexSubImage1D(State& state, int xoffset, int x, int y, int width);
|
|
|
|
|
|
/** On first apply (unless already compiled), create the minmapped
|
|
* texture and bind it, subsequent apply will simple bind to texture.*/
|
|
virtual void apply(State& state) const;
|
|
|
|
protected :
|
|
|
|
virtual ~Texture1D();
|
|
|
|
virtual void computeInternalFormat() const;
|
|
|
|
/** Helper method which does the creation of the texture itself, and
|
|
* does not set or use texture binding. */
|
|
void applyTexImage1D(GLenum target, Image* image, State& state, GLsizei& width, GLsizei& numMimpmapLevels) const;
|
|
|
|
|
|
// not ideal that _image is mutable, but its required since
|
|
// Image::ensureDimensionsArePowerOfTwo() can only be called
|
|
// in a valid OpenGL context, a therefore within an Texture::apply
|
|
// which is const...
|
|
mutable ref_ptr<Image> _image;
|
|
|
|
// subloaded images can have different texture and image sizes.
|
|
mutable GLsizei _textureWidth;
|
|
|
|
// number of mip map levels the the texture has been created with,
|
|
mutable GLsizei _numMimpmapLevels;
|
|
|
|
ref_ptr<SubloadCallback> _subloadCallback;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|