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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Ensure depth and stencil renderbuffers are created on GLESv2"
href="https://bugs.webkit.org/show_bug.cgi?id=166643">166643</a>
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<th>Summary</th>
<td>Ensure depth and stencil renderbuffers are created on GLESv2
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Local Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>WebKit Gtk
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>emanuele.aina@collabora.com
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<th>CC</th>
<td>bugs-noreply@webkitgtk.org
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<pre>If the gfx device doesn't support GL_OES_packed_depth_stencil, the separate depth and stencil buffers are not generated.
Copy what GraphicsContext3DEfl does and apply it in GraphicsContext3DCairo.
The Intel gfx driver seem to tolerate unbound renderbuffers, but enabling debugging in Mesa yields an error:
$ MESA_DEBUG=1 \
MESA_EXTENSION_OVERRIDE=-GL_OES_packed_depth_stencil
./bin/MiniBrowser <a href="http://webglsamples.org/aquarium/aquarium.html">http://webglsamples.org/aquarium/aquarium.html</a>
Mesa: User error: GL_INVALID_OPERATION in glRenderbufferStorage(no renderbuffer bound)</pre>
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