Soft shadows OpenGL

Soft shadows present an even greater challenge to developers, ... a depth texture and a "compare"...

comparrison of shadows in a scene with and without in OpenGL. You can see that with shadows it be...

Soft shadows are slower than standard shadow mapping because they usually require taking more tha...

I've been working with some OpenGL recently (version 3.3) and I am curious as to what techniques ...

Or is there an alternative? Thanks a lot in advance for your help! opengl glsl shader shadow shad...