I am using the latest release of oiio to make tiled pyramids from a grayscale bmp to a tif. It all works, except that the mipmaps go smaller than the tile size all the way down to 1x1 image. When I use irfanview to inspect the output image, it shows black for all the image pages that are smaller than 64x64. (I just tried oiio's iv and it shows the images, well at least the ones I could see; I could not really see anything smaller than 25x25. I could certainly see the first one below 64x64 was not all black as irfanview shows.) But I do not really want mipmap images smaller than the tile size 64x64 tile size. And there does not seem to be a way to stop it.
I added a simple if statement to maketexture.cpp so the mipmapping stops once the dimensions are smaller than the tile size. Is this a generally useful feature for others? If so, I can submit a pull request. If not, what about an option to specify the minimum dimensions at which the mipmaps should stop? Or am I the only one who does not want such small mipmap images? Thanks! Phil
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ Oiio-dev mailing list Oiio-dev@lists.openimageio.org http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
