write_fragment_fs.glsl

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/**
 * @file
 * @brief Writes given fragment color to the rendering buffer. Adds glow if needed.
 */
 
#ifndef glsl110
    #if r_postprocess
        /** After glsl1110 this need to be explicitly declared; used by fixed functionality at the end of the OpenGL pipeline.*/
        out vec4 gl_FragData[2];
    #else
        /** After glsl1110 this need to be explicitly declared; used by fixed functionality at the end of the OpenGL pipeline.*/
        out vec4 gl_FragColor;
    #endif
#endif
 
uniform float GLOWSCALE;
 
/** Glowmap.*/
uniform sampler2D SAMPLER_GLOWMAP;
 
void writeFragment(vec4 color) {
#if r_postprocess
    gl_FragData[0] = color;
    if (GLOWSCALE > 0.01) {
        vec4 glowcolor = texture2D(SAMPLER_GLOWMAP, gl_TexCoord[0].st);
        gl_FragData[1].rgb = glowcolor.rgb * glowcolor.a * GLOWSCALE;
        gl_FragData[1].a = 1.0;
    } else {
        gl_FragData[1] = vec4(0,0,0,1);
    }
#else
    if (GLOWSCALE > 0.01) {
        vec4 glowcolor = texture2D(SAMPLER_GLOWMAP, gl_TexCoord[0].st);
        color.rgb += glowcolor.rgb * glowcolor.a * GLOWSCALE;
    }
    gl_FragColor = color;
#endif
}