Bug 37205 - [GLSL] Norsetto shadow mapping: error: type mismatch
Summary: [GLSL] Norsetto shadow mapping: error: type mismatch
Alias: None
Product: Mesa
Classification: Unclassified
Component: Mesa core (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: mesa-dev
QA Contact:
URL: http://norsetto.site11.com/?db_select...
Depends on:
Reported: 2011-05-14 08:38 UTC by Sven Arvidsson
Modified: 2011-05-14 10:14 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

failing shader (1.97 KB, text/plain)
2011-05-14 08:38 UTC, Sven Arvidsson

Description Sven Arvidsson 2011-05-14 08:38:33 UTC
Created attachment 46715 [details]
failing shader

The Norsetto shadow mapping demo fails to compile one of the shaders with a "type mismatch" error. This was working back in 2009, so I guess it's a problem with the rewritten GLSL compiler.


The failing shader is attached.
Comment 1 Marek Olšák 2011-05-14 08:50:04 UTC
I guess the problem is:

offset.y = 0;

But it should be:

offset.y = 0.0;

It looks like a bug in the demo.
Comment 2 Sven Arvidsson 2011-05-14 09:10:49 UTC
True, it does run with this small change. I don't have any other GL implementations to compare with, but I guess they are more forgiving with these errors.
Comment 3 Kenneth Graunke 2011-05-14 10:14:19 UTC
Yep, that's the issue.  The GLSL 1.10 specification, Chapter 4, explicitly states "There are no implicit conversions between types."

Another alternative is to use #version 120.  GLSL >= 1.20 supports implicit conversions and would be perfectly okay with that line.  There's really no reason not to use 1.20 at this point.

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