bgfx/3rdparty/glsl-optimizer/tests/vertex/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 vec4 _WaveOffset;
uniform float _WaveScale;
uniform mat4 _World2Object;
uniform vec3 _WorldSpaceCameraPos;

uniform vec4 unity_Scale;
void PositionFog( in vec4 v, out vec4 pos, out float fog );
vec3 ObjSpaceViewDir( in vec4 v );
v2f vert( in appdata v );
void PositionFog( in vec4 v, out vec4 pos, out float fog ) {
    pos = ( gl_ModelViewProjectionMatrix * v );
    fog = pos.z ;
}
vec3 ObjSpaceViewDir( in vec4 v ) {
    vec3 objSpaceCameraPos;
    objSpaceCameraPos = (( _World2Object * vec4( _WorldSpaceCameraPos.xyz , 1.00000) ).xyz  * unity_Scale.w );
    return (objSpaceCameraPos - v.xyz );
}
v2f vert( in appdata v ) {
    v2f o;
    vec4 temp;
    PositionFog( v.vertex, o.pos, o.fog);
    temp.xyzw  = ((v.vertex.xzxz  * _WaveScale) + _WaveOffset);
    o.bumpuv[ 0 ] = (temp.xy  * vec2( 0.400000, 0.450000));
    o.bumpuv[ 1 ] = temp.wz ;
    o.viewDir.xzy  = normalize( ObjSpaceViewDir( v.vertex) );
    return o;
}
varying vec4 xlv_FOG;
void main() {
    v2f xl_retval;
    appdata xlt_v;
    xlt_v.vertex = vec4( gl_Vertex);
    xlt_v.normal = vec3( gl_Normal);
    xl_retval = vert( xlt_v);
    gl_Position = vec4( xl_retval.pos);
    xlv_FOG = vec4( xl_retval.fog, 0.0, 0.0, 0.0);
    gl_TexCoord[0] = vec4( xl_retval.bumpuv[0], 0.0, 0.0);
    gl_TexCoord[1] = vec4( xl_retval.bumpuv[1], 0.0, 0.0);
    gl_TexCoord[2] = vec4( xl_retval.viewDir, 0.0);
}