[solved] Fragment shader problem on OS X: gl_FragColor

[MyOwnClone]

Hi,
I am using this fragment shader:

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#version 120
 
varying float realDist;
 
uniform sampler2D GrassTexture;
 
void main ()
{
    gl_FragColor = texture2D( GrassTexture, gl_TexCoord[0].st);
}
 

Running on OS X and using irrlicht 1.8. On my windows machine, everything works great, but when I try to run my app with
this shader used, i got this error message on OS X:

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GLSL shader failed to compile
ERROR: 0:9: Use of undeclared identifier 'gl_FragColor'

As far as i know, irrlicht uses lower versions of OpenGL on OS X than on Windows. But gl_FragColor is supported even in opengl 2.1. So why it won't compile?
This is what I get when irrlicht starts:

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Irrlicht Engine version 1.8.0
Darwin Kernel Version 12.3.0: Sun Jan  6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64
Using renderer: OpenGL 2.1
AMD Radeon HD 6750M OpenGL Engine: ATI Technologies Inc.
OpenGL driver version is 1.2 or better.
GLSL version: 1.2

Code which uses this shader:

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s32 materialGrass = repoGame.get_context()->device->getVideoDriver()->getGPUProgrammingServices()->addHighLevelShaderMaterialFromFiles(
        vertPath, "main", video::EVST_VS_1_1,
        fragPath, "main", video::EPST_PS_1_1,
        grassShaderCB, video::EMT_TRANSPARENT_ALPHA_CHANNEL);

fragPath points to fragment shader mentioned above.

Does somebody know where is the problem?

[MyOwnClone]

Sorry,
my bad. The real cause of the problem was in another part of code which resulted that fragment shader code was supplied both to vertex shader and fragment shader, resulting in error in compilation.

Problem solved!