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Aurora Fantasy 5.4.2 - downscale.glsl #include "/lib/downscale.glsl"
Downscale functions. - Funções de downscale.*/ 

#define viewSize vec2(viewWidth, viewHeight)

#if !defined PS1_LIKE
    void resize_vertex(inout vec4 glPosition) {
    }
#else
    void resize_vertex(inout vec4 glPosition) {
        glPosition.xy *= RENDER_SCALE; 
        glPosition.xy -= glPosition.w * (1 - RENDER_SCALE);
    }
#endif

#if defined FRAGMENT && !defined PS1_LIKE
    bool fragment_cull() {
        return false;
    }
#elif defined FRAGMENT
    bool fragment_cull() {
        vec2 max_limit = ceil(viewSize * RENDER_SCALE);
        return any(greaterThan(gl_FragCoord.xy, max_limit));
    }
#endif
