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<h1>Depth, Stencil, & Alpha<a class="headerlink" href="#depth-stencil-alpha" title="Permalink to this headline">¶</a></h1>
<p>These three states control the depth, stencil, and alpha tests, used to
discard fragments that have passed through the fragment shader.</p>
<p>Traditionally, these three tests have been clumped together in hardware, so
they are all stored in one structure.</p>
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