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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 - Strange splashRound behaviour that sometimes causes all white render on windows."
href="https://bugs.freedesktop.org/show_bug.cgi?id=91188">91188</a>
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<th>Summary</th>
<td>Strange splashRound behaviour that sometimes causes all white render on windows.
</td>
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<th>Product</th>
<td>poppler
</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>splash backend
</td>
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<th>Assignee</th>
<td>poppler-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>lztoad@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=116871" name="attach_116871" title="Suggested patch">attachment 116871</a> <a href="attachment.cgi?id=116871&action=edit" title="Suggested patch">[details]</a></span>
Suggested patch
With USE_FLOAT=ON on windows the splashRound from splash/SplashMath.h always
returns 0. So it renders all white pdfs.
It is caused by the line
__asm fld QWORD PTR x
Looks like for floats it should be.
__asm fld DWORD PTR x
I don't know assembler, so have no idea why (and, actually, if, I haven't
compiled it for LNX) it is working with GCC for double and float values with
"fldl %4" and is it safe.
Strange is that there is no workaround, like in the other rounding functions in
the file. That is, like
#elif USE_FLOAT
return (int)roundf(x);
So, actually maybe it is better to use this method to fix the issue and not the
attached patch.
Attached is the patch to change the windows assembly code.</pre>
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