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Updates the osg::Texture3D::Extensions interface to support the standardisation

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of extensions supported across multiple graphics contexts.
This commit is contained in:
Robert Osfield
2002-09-14 10:38:28 +00:00
parent 6d21fbd6cf
commit ce36cda0cc
2 changed files with 49 additions and 9 deletions
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42
src/osg/Texture3D.cpp
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@@ -276,21 +276,55 @@ void Texture3D::copyTexSubImage3D(State& state, int xoffset, int yoffset, int zo
}
}
typedef buffered_value< ref_ptr<Texture3D::Extensions> > BufferedExtensions;
static BufferedExtensions s_extensions;
const Texture3D::Extensions* Texture3D::getExtensions(uint contextID,bool createIfNotInitalized)
{
typedef buffered_value< ref_ptr<Extensions> > BufferedExtensions;
static BufferedExtensions s_extensions;
if (!s_extensions[contextID] && createIfNotInitalized) s_extensions[contextID] = new Extensions;
return s_extensions[contextID].get();
}
void Texture3D::setExtensions(uint contextID,Extensions* extensions)
{
s_extensions[contextID] = extensions;
}
#ifndef GL_MAX_3D_TEXTURE_SIZE
#define GL_MAX_3D_TEXTURE_SIZE 0x8073
#endif
Texture3D::Extensions::Extensions()
{
setupGLExtenions();
}
Texture3D::Extensions::Extensions(const Extensions& rhs):
Referenced()
{
_isTexture3DSupported = rhs._isTexture3DSupported;
_isTexture3DFast = rhs._isTexture3DFast;
_maxTexture3DSize = rhs._maxTexture3DSize;
_glTexImage3D = rhs._glTexImage3D;
_glTexSubImage3D = rhs._glTexSubImage3D;
_glCopyTexSubImage3D = rhs._glCopyTexSubImage3D;
_gluBuild3DMipmaps = rhs._gluBuild3DMipmaps;
}
void Texture3D::Extensions::lowestCommonDenominator(const Extensions& rhs)
{
if (!rhs._isTexture3DSupported) _isTexture3DSupported = false;
if (!rhs._isTexture3DFast) _isTexture3DFast = false;
if (rhs._maxTexture3DSize<_maxTexture3DSize) _maxTexture3DSize = rhs._maxTexture3DSize;
if (!rhs._glTexImage3D) _glTexImage3D = 0;
if (!rhs._glTexSubImage3D) _glTexSubImage3D = 0;
if (!rhs._glCopyTexSubImage3D) _glCopyTexSubImage3D = 0;
if (!rhs._gluBuild3DMipmaps) _gluBuild3DMipmaps = 0;
}
void Texture3D::Extensions::setupGLExtenions()
{
_isTexture3DFast = isGLExtensionSupported("GL_EXT_texture3D");