Shader not working anymore?

[ustk]

@Christoph-Hart

Shader from the doc:

void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
    // Normalized pixel coordinates (from 0 to 1)
    vec2 uv = fragCoord/iResolution.xy;

    // Time varying pixel color
    vec3 col = 0.5 + 0.5*cos(iTime+uv.xyx+vec3(0,2,4));

    // Output to screen
    fragColor = vec4(col,1.0);
}

Interface:! ERROR: 0:0: '' : syntax error: #line{GLSL::Interface::bgShader2}
Interface:! ERROR: 0:1: '(' : syntax error: syntax error{GLSL::Interface::bgShader2}

Use Open GL is enabled

[Christoph Hart]

@ustk Where in the docs? It's using a wrong syntax, you need to define the main function without parameters:

void main()
{
    // Normalized pixel coordinates (from 0 to 1)
    vec2 uv = fragCoord/iResolution.xy;

    // Time varying pixel color
    vec3 col = 0.5 + 0.5*cos(iTime+uv.xyx+vec3(0,2,4));

    // Output to screen
    fragColor = pixelAlpha * vec4(col,1.0);
}

[ustk]

@Christoph-Hart Oh yes my bad, actually I'm using the good syntax inside the project and it does not work for me, neither my old shader despite it was working before...