s this <a class="el" href="structnvtt_1_1_cube_surface.html" title="A CubeSurface is one level of a cube map texture. ">CubeSurface</a> with a <code>max(0.0f, cos(theta))^cosinePower</code> kernel, returning a <a class="el" href="structnvtt_1_1_cube_surface.html" title="A CubeSurface is one level of a cube map texture. ">CubeSurface</a> with faces with dimension size x size. </p>
<p>This is useful for generating prefiltered cube maps, as this corresponds to the cosine power used in the Phong reflection mode