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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - dEQP-GLES31.functional.shaders.linkage.uniform.block.differing_precision regression"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104668">104668</a>
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<th>Summary</th>
<td>dEQP-GLES31.functional.shaders.linkage.uniform.block.differing_precision regression
</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>
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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>Keywords</th>
<td>bisected, regression
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>jasuarez@igalia.com
</td>
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<th>Reporter</th>
<td>mark.a.janes@intel.com
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>lemody@gmail.com
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<p>
<div>
<pre>bisected to:
Author: Juan A. Suarez Romero <<a href="mailto:jasuarez@igalia.com">jasuarez@igalia.com</a>>
glsl/linker: link-error using the same name in unnamed block and outside
According with OpenGL GLSL 4.20 spec, section 4.3.9, page 57:
"It is a link-time error if any particular shader interface
contains:
- two different blocks, each having no instance name, and each
having a member of the same name, or
- a variable outside a block, and a block with no instance name,
where the variable has the same name as a member in the block."
This means that it is a link error if for example we have a vertex
shader with the following definition.
"layout(location=0) uniform Data { float a; float b; };"
and a fragment shader with:
"uniform float a;"
As in both cases we refer to both uniforms as "a", and thus using
glGetUniformLocation() wouldn't know which one we mean.
This fixes KHR-GL*.shaders.uniform_block.common.name_matching.
v2: add fixed tests (Tapani)
Reviewed-by: Tapani Pälli <<a href="mailto:tapani.palli@intel.com">tapani.palli@intel.com</a>>
------------------------------------------------------------------
Standard Output
Expecting shader compilation and program linking to succeed. Resulting program
will not be executed.
ERROR: expected shaders to compile and link properly, but failed to link.
------------------------------------------------------------------
Since the commit message indicates a similar fixed test, it may be possible
that dEQP has a bug which has not been fixed on AOSP/master</pre>
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