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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 - transparent images in cairo_win32_printing_surface_t have a black background"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91835">91835</a>
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<th>Summary</th>
<td>transparent images in cairo_win32_printing_surface_t have a black background
</td>
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<th>Product</th>
<td>cairo
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>Windows (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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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>win32 backend
</td>
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<th>Assignee</th>
<td>cairo-bugs@cairographics.org
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</tr>
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<th>Reporter</th>
<td>rodrigorivascosta@gmail.com
</td>
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<th>QA Contact</th>
<td>cairo-bugs@cairographics.org
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<p>
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<pre>Created <span class=""><a href="attachment.cgi?id=118030" name="attach_118030" title="Initializes cairo_win32_printing_surface_t::content">attachment 118030</a> <a href="attachment.cgi?id=118030&action=edit" title="Initializes cairo_win32_printing_surface_t::content">[details]</a></span>
Initializes cairo_win32_printing_surface_t::content
When drawing an image with an alpha channel into a
cairo_win32_printing_surface_t, it results in a black background.
cairo version: 1.14.2
It looks like field `cairo_win32_printing_surface_t::content` is used to
control the transparency, but that field is never initialized.
Maybe this field is not even necessary, because you can use
`win32.base.content`, but it is modified in
`_cairo_win32_printing_surface_paint_recording_pattern()` so I'm not so sure.
Anyway, initializing it in `cairo_win32_printing_surface_create()` solves the
issue (`win32.base.content` is initialized in `_cairo_surface_init`).</pre>
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