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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - glLogicOp (GL_XOR) does not work on AMD/ATI card"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95406">95406</a>
</td>
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<th>Summary</th>
<td>glLogicOp (GL_XOR) does not work on AMD/ATI card
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Radeon
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>franz.reiter@cadcam.co.at
</td>
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<pre>Linux-driver on Ubuntu 14.04.4/64-bit with card AMD/ATI Richland Radeon HD
8570D
(AMD Radeon R7 240):
it seems that "glLogicOp (GL_XOR)" does not work:
..
glLogicOp (GL_XOR);
glEnable (GL_COLOR_LOGIC_OP);
..
glPixelZoom (1.f, 1.f);
glDrawPixels (rb_dx, rb_dy, // width, height
// GL_BLUE, // yellow
GL_GREEN, // violet
// GL_RED, // cyan
GL_FLOAT,
fBuf); // data
glDisable(GL_COLOR_LOGIC_OP);
creates a black background only.
Sourcecode: see function GL_RubberBox_draw in:
<a href="https://github.com/gcad3d/gcad3d/blob/master/src/gr/ut_GL.c">https://github.com/gcad3d/gcad3d/blob/master/src/gr/ut_GL.c</a>
The proprietary AMD/ATI-driver and all Nvidia-cards/drivers work ok with this
code.
---------------------------------------------------------
CAD-CAM Services Ing. Franz Reiter
email <a href="mailto:franz.reiter@cadcam.co.at">franz.reiter@cadcam.co.at</a>
<a href="http://www.cadcam.co.at">http://www.cadcam.co.at</a>
<a href="http://www.gcad3d.org">http://www.gcad3d.org</a>
---------------------------------------------------------</pre>
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