bgfx/3rdparty/glsl-optimizer/tests/fragment/zun-Hidden_Grayscale_Effect-out.txt

uniform sampler2D _RampTex;
uniform float _RampOffset;
uniform sampler2D _MainTex;
void main ()
{
  vec4 xlat_var_output_1;
  vec4 tmpvar_2;
  tmpvar_2 = texture2D (_MainTex, gl_TexCoord[0].xy);
  vec2 tmpvar_3;
  tmpvar_3.y = 0.5;
  tmpvar_3.x = (dot (tmpvar_2.xyz, vec3(0.22, 0.707, 0.071)) + _RampOffset);
  xlat_var_output_1.xyz = texture2D (_RampTex, tmpvar_3).xyz;
  xlat_var_output_1.w = tmpvar_2.w;
  gl_FragData[0] = xlat_var_output_1;
}