FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added new osg::Texture::SubloadCallback, and getNumMipmapLevels() to osg::Texture

Browse Source 
and osg::Image.  This additions are design to make texture subloading more
flexible.
This commit is contained in:
Robert Osfield
2002-08-16 13:33:32 +00:00
parent bff72e1077
commit 7dfefaf67f
5 changed files with 138 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
include/osg/Image
View File

@@ -138,13 +138,14 @@ class SG_EXPORT Image : public Object
static const unsigned int computeNumComponents(GLenum format);
static const unsigned int computePixelSizeInBits(GLenum format,GLenum type);
static const unsigned int computeRowWidthInBytes(int width,GLenum format,GLenum type,int packing);
static const unsigned int computeNearestPowerOfTwo(unsigned int s,float bias=0.5f);
// precomputed mipmaps stuff;
typedef std::vector< unsigned int > MipmapDataType;
inline bool isMipmap() const {return !_mipmapData.empty();};
unsigned int getNumMipmaps() const
unsigned int getNumMipmapLevels() const
{
return _mipmapData.size()+1;
};
@@ -160,10 +161,14 @@ class SG_EXPORT Image : public Object
{
if(mipmapNumber == 0)
return _data;
else if(mipmapNumber < getNumMipmaps())
else if(mipmapNumber < getNumMipmapLevels())
return _data + _mipmapData[mipmapNumber-1];
return 0L;
};
/** converts a single image into mip mapped version image.*/
void computeMipMaps();
protected :