bgfx/3rdparty/glsl-optimizer/tests/fragment/zun-Test_VertexShaderDepthTexture-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;
    vec2 uv;
};
struct appdata_base {
    vec4 vertex;
    vec3 normal;
    vec4 texcoord;
};
uniform sampler2D _CameraDepthTexture;
uniform vec4 _ZBufferParams;
float Linear01Depth( in float z );
vec4 frag( in v2f i );
float Linear01Depth( in float z ) {
    return (1.00000 / ((_ZBufferParams.x  * z) + _ZBufferParams.y ));
}
vec4 frag( in v2f i ) {
    return vec4( (1.00000 - Linear01Depth( texture2D( _CameraDepthTexture, i.uv).x )));
}
void main() {
    vec4 xl_retval;
    v2f xlt_i;
    xlt_i.pos = vec4(0.0);
    xlt_i.uv = vec2( gl_TexCoord[0]);
    xl_retval = frag( xlt_i);
    gl_FragData[0] = vec4( xl_retval);
}