Hi Eric,
On 2/16/07, Eric Sokolowsky <[EMAIL PROTECTED]> wrote:
I know that this thread is quite cold, but I was wondering if it was
ever implemented as a way to use normalized texture coordinates with
non-power-of-two size images. If not, I might want to take a stab at it.
To help this task Iadded the follow method and functionality into osg::TexMat:
/** Switch on/off the post scaling of the TexMat matrix by the
size of the last applied texture rectangle.
* Use a TexMat alongside a TextureRectangle with this
scaling applied allows one to treat a TextureRectnagles texture
coordinate
* range as if it were the usual non dimensional 0.0 to 1.0 range.
* Note, the TexMat matrix itself is not modified by the post
scaling, its purely an operation passed to OpenGL to do the post
scaling once the
* the TexMat matrix has been loaded.*/
void setScaleByTextureRectangleSize(bool flag) {
_scaleByTextureRectangleSize = flag; }
/** Get whether the post scaling of the TexMat matrix, by the
size of the last applied texture rectangle, is switched on/off.*/
bool getScaleByTextureRectangleSize() const { return
_scaleByTextureRectangleSize; }
So you need to add a TexMat alongside the texture being applied with
changing sizes, and set it up to automatically scale, and then just
let the classes do their stuff.
Robert.
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