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<th>Priority</th>
<td>medium
</td>
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0) doesn't unbind stencil buffer"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79115">79115</a>
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
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<th>Summary</th>
<td>glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0) doesn't unbind stencil buffer
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>jlegg@feralinteractive.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>10.1
</td>
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<th>Component</th>
<td>Mesa core
</td>
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<th>Product</th>
<td>Mesa
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=99627" name="attach_99627" title="Test case">attachment 99627</a> <a href="attachment.cgi?id=99627&action=edit" title="Test case">[details]</a></span>
Test case
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
GL_RENDERBUFFER, 0) should unbind both the depth and the stencil attachment.
However, when using mesa 10.1 with Intel Haswell graphics, the stencil buffer
is not unbound.
_mesa_framebuffer_renderbuffer has a special path to bind a stencil buffer when
using GL_DEPTH_STENCIL_ATTACHMENT for a non-null renderbuffer, but for a null
renderbuffer, it only calls remove_attachment with the depth attachment
returned by get_attachment. It also needs to handle the stencil buffer when
GL_DEPTH_STENCIL_ATTACHMENT is used for null renderbuffers.
I have attached a test case to demonstrate the problem. An assertion fails on
line 61 when the bug occurs.</pre>
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