[Solved] How to use Cg Shaders?

[MTLZ]

Hello everybody,

I tried to use Cg shaders in my game but I get a compilation error during execution:

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GLSL shader failed to compile
Vertex shader failed to compile with the following errors:
ERROR: 0:2: error(#132) Syntax error: 'float4' parse error
ERROR: error(#273) 1 compilation errors. No code generated

I thought Cg was compatible with both OpenGL and Direct3D so I don't understand what's wrong with my implementation.
Here are portions of my code, maybe some of you will help me:

Game.cpp:

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// Cg Test shader
CgTest = gpuManager->addHighLevelShaderMaterialFromFiles(
  "resource/Shader/cgtest.vertex.cg", "mainVS", video::EVST_VS_2_0,
  "resource/Shader/cgtest.pixel.cg", "mainPS", video::EPST_PS_2_0,
  0, video::EMT_SOLID, 0, video::EGSL_CG
);

Character.cpp:

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Node->setMaterialType((video::E_MATERIAL_TYPE)Game::Shaders.CgTest);

cgtest.vertex.cg:

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struct vertex_Output {
  float4 position : POSITION;
  float4 color : COLOR;
};
vertex_Output mainVS(float2 position : POSITION)
{
  vertex_Output OUT;
  OUT.position = float4(position, 0, 1);
  OUT.color = float4(0, 1, 0, 1);
  return OUT;
}

Thanks

[Mel]

CG shader compilation isn't as widely extended as HLSL or GLSL, nor its libraries, so, Irrlicht has the CG support disabled by default, this doesn't mean Irrlicht is not compatible, but that you need to recompile Irrlicht with the CG support enabled.

Your output tells that Irrlicht is trying to compile a GL shader, not a CG, hence the errors. Recompile irrlicht with cg support, and try again. I hope this helps you

[MTLZ]

That was the problem: I did not recompile Irrlicht with CG support. My bad.
Thank you very much.