normal map and alpha channel

tintinkeke · Post by **tintinkeke** » Tue Dec 12, 2006 3:07 am

hello everyone!
how can i use video::EMT_TRANSPARENT_ALPHA_CHANNEL and video::EMT_NORMAL_MAP_SOLID together? i means , a object with normal map tech and show it's alpha channel???

tnx.

raven_coda · Post by **raven_coda** » Tue Dec 12, 2006 3:16 am

Why do you want it to have EMT_NORMAL_MAP_SOLID if you already have it transparent? I don't understand why you'd need it.

vitek · Post by **vitek** » Tue Dec 12, 2006 6:49 am

He wants normal mapping and transparency on the same object, something like EMT_NORMAL_MAP_TRANSPARENT_VERTEX_ALPHA but wants to use the texture alpha instead of the vertex alpha. For that you would need to create your own material renderer.

Travis

tintinkeke · Post by **tintinkeke** » Tue Dec 12, 2006 8:47 am

vitek wrote:He wants normal mapping and transparency on the same object, something like EMT_NORMAL_MAP_TRANSPARENT_VERTEX_ALPHA but wants to use the texture alpha instead of the vertex alpha. For that you would need to create your own material renderer.

Travis

thank u vitek, i got it.

needforhint · Post by **needforhint** » Tue Dec 12, 2006 10:39 am

an easy way to do this is to apply the bump shader on the target of EMT_TRANSPARENT not the target of EMT_DIFFUSE, it is in the shader object creation, see tuts