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Improvements to osg::Texture3D::Extensions code.

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This commit is contained in:
Robert Osfield
2002-09-05 15:45:10 +00:00
parent c4e7526f69
commit e2603ff6c4
3 changed files with 78 additions and 53 deletions
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58
include/osg/Texture3D
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@@ -2,8 +2,6 @@
//Distributed under the terms of the GNU Library General Public License (LGPL)
//as published by the Free Software Foundation.
// -*-c++-*-
#ifndef OSG_TEXTURE3D
#define OSG_TEXTURE3D 1
@@ -93,25 +91,51 @@ class SG_EXPORT Texture3D : public Texture
* texture and bind it, subsequent apply will simple bind to texture.*/
virtual void apply(State& state) const;
struct Extensions : public osg::Referenced
{
Extensions();
bool isTexture3DSupported;
bool isTexture3DFast;
GLint maxTexture3DSize;
void glTexImage3D( GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
void glTexSubImage3D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
void glCopyTexSubImage3D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height );
void gluBuild3DMipmaps( GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *data);
/** Extensions class which encapsulates the querring of extensions and
* associated function pointers, and provide convinience wrappers to
* check for the extensions or use the associated functions.*/
class Extensions : public osg::Referenced
{
public:
Extensions();
bool isTexture3DSupported() const { return _isTexture3DSupported; }
bool isTexture3DFast() const { return _isTexture3DFast; }
GLint maxTexture3DSize() const { return _maxTexture3DSize; }
void glTexImage3D( GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels) const;
void glTexSubImage3D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels) const;
void glCopyTexSubImage3D( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height ) const;
void gluBuild3DMipmaps( GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *data) const;
protected:
~Extensions() {}
typedef void (APIENTRY * GLTexImage3DProc) ( GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (APIENTRY * GLTexSubImage3DProc) ( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
typedef void (APIENTRY * GLCopyTexSubImageProc) ( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height );
typedef void (APIENTRY * GLUBuild3DMipMapsProc) ( GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *data);
bool _isTexture3DSupported;
bool _isTexture3DFast;
GLint _maxTexture3DSize;
void* _glTexImage3D;
void* _glTexSubImage3D;
void* _glCopyTexSubImage3D;
void* _gluBuild3DMipmaps;
};
static Extensions* getExtensions(uint contextID=0);
/** Function to call to get the extension of a specified context.
* If the Exentsion object for that context has not yet been created then
* and the 'createIfNotInitalized' flag been set to false then returns NULL.
* If 'createIfNotInitalized' is true then the Extensions object is
* automatically created. However, in this case the extension object
* only be created with the graphics context associated with ContextID..*/
static const Extensions* getExtensions(uint contextID,bool createIfNotInitalized);
protected :