[Mesa-dev] Fwd: [Mesa-users] 9.1.5 ES3 context only supports GLSL ES 1.00 but claims 3.00

[Ian Romanick]

On 07/31/2013 06:06 AM, Brian Paul wrote:
> -------- Original Message --------
> Subject: [Mesa-users] 9.1.5 ES3 context only supports GLSL ES 1.00 but
> claims 3.00
> Date: Tue, 30 Jul 2013 20:58:54 +0000
> From: <org.mesa3d.mesa-users at io7m.com>
> To: <mesa-users at lists.freedesktop.org>
>
> Hello.
>
> The ES3 context in 9.1.5 claims to support GLSL ES 3.0, but actually only
> supports ES 1.00. This is quite irritating behaviour for anyone that, for
> example, is generating shaders and needs to generate GLSL source
> appropriate
> to the currently running OpenGL version.

Unless someone is planning to submit conformance results and pay the 
fee, that driver shouldn't say that it supports ES3 anyway.  I think 
that's the real bug, and the shading language version is actually correct.

> Is it possible to get glGetString(GL_SHADING_LANGUAGE_VERSION) to be
> honest?
> I'd rather not add in any hacks to fall back to GLSL ES 1.00 if the
> renderer
> is Mesa, as these hacks tend to go out of date fast...
>
> http://waste.io7m.com/2013/07/18/es2_base.c
> http://waste.io7m.com/2013/07/30/version.c
>
> $ cc -W -Wall -pedantic -std=c90 -o es2_base.o -c es2_base.c
> $ cc -W -Wall -pedantic -std=c90 -o version.o -c version.c
> $ cc -o version es2_base.o version.o -lEGL -lGL -lX11
> $ ./version
> EGL_VERSION: 1.4 (Gallium)
> EGL_VENDOR: Mesa Project
> EGL_CLIENT_APIS: OpenGL OpenGL_ES OpenGL_ES2
> GL_VERSION: OpenGL ES 3.0 Mesa 9.1.5
> GL_RENDERER: Gallium 0.4 on AMD RV730
> GL_SHADING_LANGUAGE_VERSION: OpenGL ES GLSL ES 3.0
>
> However:
>
> #version 300
> void main (void)
> {
>    gl_Position = vec4(1, 2, 3, 1);
> }
>
> Results in:
>
> 0:2(10): error: GLSL ES 3.00 is not supported. Supported versions are:
> 1.00 ES
>
> M
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