Stencil Texture Sampling#977
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Allows sampling the stencil aspect of depth/stencil textures (
d24s8andd32fs8).The data you get when sampling the texture depends on the type of the sampler variable:
texture2D) will give you depth data.utexture2D) will give you stencil data.There's new validation to make sure the float/integerness of texture sampling is valid.
For some reason, I can't get glslang to accept overloads of
getPixelthat takeusamplervariables, so I left that out for now.Fixes #869
(TODO: add
s8textures?)Rejected idea: Add an
aspectoption tolovr.graphics.newTextureViewwhere you can create different views of a texture to select between depth and stencil. It would be more explicit, but would require everyone to create a texture view just to sample the stencil data.