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Normal map performance

eprime

Hi,
if I want to use a normal map in spine animation (I develop with xna runtime), I must render the skeleton two time, this is right?
First the diffuse skleton, than a clone of the same skeleton file with normal map atlas, or the same skeleton with a normal map skin.
I am saying right?
therefore, doing so the performances are halved?

Another question. Is there a way to change the texture at runtime in xna without use skin?
because the ideal would be only to replace the texture with normal map, in this way I can create normal textures directly from the atlas file and not on every single branch

Cristian Zerbinati

this is my first test.
if I could modify the texture to render the normalmap it would be optimized

it is much more convenient to produce a normalmap from an entire atlas texture than from any single branch
I hope it is possibile in XNA too
regards

Cristian Zerbinati

Harald

Ciao Cristian. We will create a normalmap shader for you that binds the normalmap as a second texture in a single pass.

This would also resolve your other request here, right:
MaterialPropertyBlock to replace texture of Spine Animation

Normalmap support is now officially provided as a single-pass shader via the latest commits.
There is now an additional effect SpineEffectNormalmap, and XnaTextureLoader supports two additional parameters:

Atlas atlas = new Atlas(assetsFolder + atlasName + ".atlas", new XnaTextureLoader(GraphicsDevice,
               loadMultipleTextureLayers: true, textureSuffixes: new string[] { "", "_normals" }));

Usage is shown in the example code. Please git-pull the latest changes and let us know if this is fulfilling your requirements!

The issue has been tracked under this ticket:
https://github.com/EsotericSoftware/spine-runtimes/issues/1645

eprime

WOW Thank you! I test it as soon as!!!

it's work, so cool! very very thank you!!!!!!!!!!!!!!
I'm very happy of the result

Harald

Thanks for your kind reply, very glad that you like it! :nerd: