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<section id="pygame-overlay">
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<div class="admonition warning">
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<p class="admonition-title">Warning</p>
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<p>This module is non functional in pygame 2.0 and above, unless you have manually compiled pygame with SDL1.
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This module will not be supported in the future.</p>
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<dl class="py class definition">
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<dt class="sig sig-object py title" id="pygame.Overlay">
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<span class="sig-prename descclassname"><span class="pre">pygame.</span></span><span class="sig-name descname"><span class="pre">Overlay</span></span><a class="headerlink" href="#pygame.Overlay" title="Permalink to this definition">¶</a></dt>
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<dd><div class="line-block">
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<div class="line"><span class="summaryline">pygame object for video overlay graphics</span></div>
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<div class="line"><span class="signature">Overlay(format, (width, height)) -> Overlay</span></div>
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</div>
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<table class="toc docutils align-default">
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<colgroup>
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<col style="width: 35%" />
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<col style="width: 1%" />
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<col style="width: 64%" />
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</colgroup>
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<tbody>
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<tr class="row-odd"><td><div class="line"><a class="toc reference external" href="overlay.html#pygame.Overlay.display">pygame.Overlay.display</a></div>
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</td>
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<td>—</td>
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<td>set the overlay pixel data</td>
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</tr>
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<tr class="row-even"><td><div class="line"><a class="toc reference external" href="overlay.html#pygame.Overlay.set_location">pygame.Overlay.set_location</a></div>
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</td>
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<td>—</td>
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<td>control where the overlay is displayed</td>
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</tr>
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<tr class="row-odd"><td><div class="line"><a class="toc reference external" href="overlay.html#pygame.Overlay.get_hardware">pygame.Overlay.get_hardware</a></div>
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</td>
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<td>—</td>
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<td>test if the Overlay is hardware accelerated</td>
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</tr>
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</tbody>
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</table>
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<p>The Overlay objects provide support for accessing hardware video overlays.
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Video overlays do not use standard <code class="docutils literal notranslate"><span class="pre">RGB</span></code> pixel formats, and can use
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multiple resolutions of data to create a single image.</p>
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<p>The Overlay objects represent lower level access to the display hardware. To
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use the object you must understand the technical details of video overlays.</p>
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<p>The Overlay format determines the type of pixel data used. Not all hardware
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will support all types of overlay formats. Here is a list of available
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format types:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">YV12_OVERLAY</span><span class="p">,</span> <span class="n">IYUV_OVERLAY</span><span class="p">,</span> <span class="n">YUY2_OVERLAY</span><span class="p">,</span> <span class="n">UYVY_OVERLAY</span><span class="p">,</span> <span class="n">YVYU_OVERLAY</span>
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</pre></div>
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</div>
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<p>The width and height arguments control the size for the overlay image data.
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The overlay image can be displayed at any size, not just the resolution of
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the overlay.</p>
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<p>The overlay objects are always visible, and always show above the regular
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display contents.</p>
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<dl class="py method definition">
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<dt class="sig sig-object py title" id="pygame.Overlay.display">
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<span class="sig-name descname"><span class="pre">display</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pygame.Overlay.display" title="Permalink to this definition">¶</a></dt>
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<dd><div class="line-block">
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<div class="line"><span class="summaryline">set the overlay pixel data</span></div>
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<div class="line"><span class="signature">display((y, u, v)) -> None</span></div>
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<div class="line"><span class="signature">display() -> None</span></div>
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</div>
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<p>Display the YUV data in SDL's overlay planes. The y, u, and v arguments
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are strings of binary data. The data must be in the correct format used
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to create the Overlay.</p>
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<p>If no argument is passed in, the Overlay will simply be redrawn with the
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current data. This can be useful when the Overlay is not really hardware
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accelerated.</p>
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<p>The strings are not validated, and improperly sized strings could crash
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the program.</p>
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</dd></dl>
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<dl class="py method definition">
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<dt class="sig sig-object py title" id="pygame.Overlay.set_location">
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<span class="sig-name descname"><span class="pre">set_location</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pygame.Overlay.set_location" title="Permalink to this definition">¶</a></dt>
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<dd><div class="line-block">
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<div class="line"><span class="summaryline">control where the overlay is displayed</span></div>
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<div class="line"><span class="signature">set_location(rect) -> None</span></div>
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</div>
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<p>Set the location for the overlay. The overlay will always be shown
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relative to the main display Surface. This does not actually redraw the
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overlay, it will be updated on the next call to <code class="docutils literal notranslate"><span class="pre">Overlay.display()</span></code>.</p>
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</dd></dl>
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<dl class="py method definition">
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<dt class="sig sig-object py title" id="pygame.Overlay.get_hardware">
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<span class="sig-name descname"><span class="pre">get_hardware</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pygame.Overlay.get_hardware" title="Permalink to this definition">¶</a></dt>
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<dd><div class="line-block">
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<div class="line"><span class="summaryline">test if the Overlay is hardware accelerated</span></div>
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<div class="line"><span class="signature">get_hardware(rect) -> int</span></div>
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</div>
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<p>Returns a True value when the Overlay is hardware accelerated. If the
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platform does not support acceleration, software rendering is used.</p>
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</dd></dl>
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</dd></dl>
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</section>
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<a href="https://github.com/pygame/pygame/edit/main/docs/reST/ref\overlay.rst" rel="nofollow">Edit on GitHub</a>
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