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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - graph with transparent background doesn't work in android OS 5.x"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93705">93705</a>
</td>
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<th>Summary</th>
<td>graph with transparent background doesn't work in android OS 5.x
</td>
</tr>
<tr>
<th>Product</th>
<td>cairo
</td>
</tr>
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<th>Version</th>
<td>1.12.16
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>gl backend
</td>
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<th>Assignee</th>
<td>cairo-bugs@cairographics.org
</td>
</tr>
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<th>Reporter</th>
<td>enli@microstrategy.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>cairo-bugs@cairographics.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=121015" name="attach_121015" title="the correct behavior should be red background of the whole graph view">attachment 121015</a> <a href="attachment.cgi?id=121015&action=edit" title="the correct behavior should be red background of the whole graph view">[details]</a></span>
the correct behavior should be red background of the whole graph view
I'm using cairo-gl libarary to render graph with custom animation on android
TextureView.
1). I want to render a graph with transparent(i means the whole textureView
should be transparent, the view under textureView should be seen), is there any
good solutions?
2). I find a work round, use "cairo_surface_map_to_image" before i render graph
to capture the backgound image and use "cairo_surface_unmap_image" to show the
background before i start animation for every frame drawing.But, unfortunately,
this doesn't work for OS after 5.x, i will get a whole black background image,
is there anything wrong for "cairo_surface_map_to_image" and
"cairo_surface_unmap_image" in latest OS version?
Add attachment pic with the black background. the correct behavior should be
red background of the whole graph view.</pre>
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