egg-palettize: modify uv coords, instead of texture matrix

Pipeline
1

Hi,

When creating a texture atlas with egg-palettize, all source textures are modified to include a texture matrix to transform the 0/0 - 1/1 uv space to the new sub-image space of the combined texture.

Is there a way to tell egg-palettize to not adjust the egg files via the use of a texture matrix but to modify the UV coordinates directly? (Apply the texture matrix at palettize time an the UV coordinates?)

I’m asking because I’m concerned with performance. I didn’t run any performance tests yet, but clearly combining textures would give a better performance gain if Panda wouldn’t need to change the texture matrix for each sub-image.

Or (this just occured to me while typing) does panda maybe apply the texture matrix in an egg file at load time?

Cheers,

Erik

2

Panda applies the texture matrix in an egg file at load time. So no worries. In general, an egg file is interpreted as a loose description of the scene; there is little one-to-one correlation between the egg file and the actual structure created in Panda.

But if you were philosophically disturbed by the presence of a texture matrix in an egg file, you could remove it with egg-trans -t. :slight_smile:

David

3

Excellent.

Thanks, Dave!