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

[Brian Paul]

On 07/30/2013 02:58 PM, org.mesa3d.mesa-users at io7m.com wrote:
> 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.
>
> 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 is Mesa, as these hacks tend to go out of date fast...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

I've forwarded this to the mesa-dev list.

-Brian