bgfx/3rdparty/glsl-optimizer/tests/fragment/zun-FX_Water_(simple)-in.txt

struct v2f_vertex_lit {
    vec2 uv;
    vec4 diff;
    vec4 spec;
};
struct v2f_img {
    vec4 pos;
    vec2 uv;
};
struct appdata_img {
    vec4 vertex;
    vec2 texcoord;
};
struct v2f {
    vec4 pos;
    float fog;
    vec2 bumpuv[2];
    vec3 viewDir;
};
struct appdata {
    vec4 vertex;
    vec3 normal;
};
uniform sampler2D _BumpMap;
uniform sampler2D _ColorControl;
uniform vec4 _horizonColor;
vec4 UnpackNormal( in vec4 packednormal );
vec4 frag( in v2f i );
vec4 UnpackNormal( in vec4 packednormal ) {
    vec4 normal;
    normal.xy  = ((packednormal.wy  * 2.00000) - 1.00000);
    normal.z  = sqrt( ((1.00000 - (normal.x  * normal.x )) - (normal.y  * normal.y )) );
    return normal;
}
vec4 frag( in v2f i ) {
    vec3 bump1;
    vec3 bump2;
    vec3 bump;
    float fresnel;
    vec4 water;
    vec4 col;
    bump1 = UnpackNormal( texture2D( _BumpMap, i.bumpuv[ 0 ])).xyz ;
    bump2 = UnpackNormal( texture2D( _BumpMap, i.bumpuv[ 1 ])).xyz ;
    bump = ((bump1 + bump2) * 0.500000);
    fresnel = dot( i.viewDir, bump);
    water = texture2D( _ColorControl, vec2( fresnel, fresnel));
    col.xyz  = mix( water.xyz , _horizonColor.xyz , vec3( water.w ));
    col.w  = _horizonColor.w ;
    return col;
}
varying vec4 xlv_FOG;
void main() {
    vec4 xl_retval;
    v2f xlt_i;
    xlt_i.pos = vec4(0.0);
    xlt_i.fog = float( xlv_FOG);
    xlt_i.bumpuv[0] = vec2( gl_TexCoord[0]);
    xlt_i.bumpuv[1] = vec2( gl_TexCoord[1]);
    xlt_i.viewDir = vec3( gl_TexCoord[2]);
    xl_retval = frag( xlt_i);
    gl_FragData[0] = vec4( xl_retval);
}