opengl - Using multiple textures for shader programming in Haskell -

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i'm using textureobjects when reading in texture. read in 2 textures, , want dynamically switch between them, when try do:

tunit =(\(textureobject x) -> x) texobj

and 

activetexture $= (textureunit tunit) setuniform p "texunit" (textureunit tunit)

it doesn't work, if replace tunit 0, works it'll draw last texture load.

i'm using glutil's readtexture function load in texture.

any thoughts?

the textureunit local shader id , textureobject global texture id. wasn't binding textureobject again before setting active texture, using latest 1 bound.


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