Sorry. It keeps trying to encrypt the message.
Robert
While continuing to build a model that results in the problem, I discovered
something I didn't see before. The IVE model had an incorrect number of mipmap
levels (it had 8) for a 32x32 texture. It makes sense that glTexStorage2D
would generate INVALID_OPERATION in this case. Rebuilding the model from a
source with uncompressed textures and recompressing the textures worked. The
original model was converted with a much older version of OSG, pre OSG 3 for
sure.
So I was barking up the wrong tree:)
That addresses my specific issue without needing a change to OSG 3.4.0.
However, I still think it is worth trying for the OSX case.
Trajce
In osg/Texture.cpp, function applyTexImage2D(), find the line:
useTexStorage &= sizedInternalFormat != 0;
add the following after the line:
if ( useTexStorage && compressed_image && numMipmapLevels > 2 )
{
numMipmapLevels -= 2;
}
This is clearly not production quality as it assumes block size is 4 and
complete mipmaps to 1x1. It should be enough to check the approach. You may
have to set GL_TEXTURE_MAX_LEVEL if the driver thinks the texture is
incomplete, but I didn't have that issue.
Scott
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