I’m using projected shadows on my engine, and altough everything is working alright in Nvidia cards, in Ati cards, i get a weird result, that looks like a wrong blending.
I’m rendering the meshes in white, to a black texture, and using the following blend equation to blend the shadow on the environment :
On my GF3 using the latest drivers ( 45.23 ) i get this result :
On an Ati 9800, also with the latest drivers ( 188.8.131.5278 ), i get this :
On the Ati, it seem that the black parts of the texture are not completely removed…
any ideias on what could be wrong ?