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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 - GLSL ES does not allow non-constant initializers for globals"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90157">90157</a>
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<th>Summary</th>
<td>GLSL ES does not allow non-constant initializers for globals
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>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>glsl-compiler
</td>
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<th>Assignee</th>
<td>idr@freedesktop.org
</td>
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<th>Reporter</th>
<td>idr@freedesktop.org
</td>
</tr>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Desktop GLSL allows things like
uniform int foo;
int bar = foo + 10;
void main()
{
...
}
However, the GLSL ES 3.0 and 3.1 specifications have the following language in
section 4.3:
"Initializers may only be used in declarations of globals with no storage
qualifier or with a const qualifier. Such initializers must be a constant
expression."
There is anecdotal evidence that other implementations, at least on Android,
enforce this restriction. At the very least, we should emit a portability
warning. We probably should emit an error (in GLSL ES only) and have a driconf
option to disable.</pre>
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