bgfx/3rdparty/glsl-optimizer/tests/fragment/z-fxaa-preset1-ir.txt

#extension GL_ARB_shader_texture_lod : enable
uniform sampler2D _MainTex;
uniform vec4 _MainTex_TexelSize;
varying vec2 xlv_TEXCOORD0;
vec4 xll_tex2Dlod (
  in sampler2D s_1,
  in vec4 coord_2
)
{
  vec4 tmpvar_3;
  tmpvar_3 = texture2DLod (s_1, coord_2.xy, coord_2.w);
  return tmpvar_3;
}

vec4 xll_tex2Dgrad (
  in sampler2D s_4,
  in vec2 coord_5,
  in vec2 ddx_6,
  in vec2 ddy_7
)
{
  vec4 tmpvar_8;
  tmpvar_8 = texture2DGradARB (s_4, coord_5, ddx_6, ddy_7);
  return tmpvar_8;
}

vec4 FxaaTexOff (
  in sampler2D tex_9,
  in vec2 pos_10,
  in vec2 off_11,
  in vec2 rcpFrame_12
)
{
  vec4 tmpvar_13;
  tmpvar_13.zw = vec2(0.0, 0.0);
  tmpvar_13.xy = (pos_10.xy + (off_11 * rcpFrame_12)).xy;
  vec4 tmpvar_14;
  tmpvar_14 = xll_tex2Dlod (tex_9, tmpvar_13);
  return tmpvar_14;
}

vec4 FxaaTexLod0 (
  in sampler2D tex_15,
  in vec2 pos_16
)
{
  vec4 tmpvar_17;
  tmpvar_17.zw = vec2(0.0, 0.0);
  tmpvar_17.xy = pos_16.xy.xy;
  vec4 tmpvar_18;
  tmpvar_18 = xll_tex2Dlod (tex_15, tmpvar_17);
  return tmpvar_18;
}

vec4 FxaaTexGrad (
  in sampler2D tex_19,
  in vec2 pos_20,
  in vec2 grad_21
)
{
  vec4 tmpvar_22;
  tmpvar_22 = xll_tex2Dgrad (tex_19, pos_20.xy, grad_21, grad_21);
  return tmpvar_22;
}

float FxaaLuma (
  in vec3 rgb_23
)
{
  return ((rgb_23.y * 1.96321) + rgb_23.x);
}

vec3 FxaaLerp3 (
  in vec3 a_24,
  in vec3 b_25,
  in float amountOfA_26
)
{
  vec3 tmpvar_27;
  tmpvar_27.x = -(amountOfA_26);
  tmpvar_27.y = -(amountOfA_26);
  tmpvar_27.z = -(amountOfA_26);
  vec3 tmpvar_28;
  tmpvar_28.x = amountOfA_26;
  tmpvar_28.y = amountOfA_26;
  tmpvar_28.z = amountOfA_26;
  return ((tmpvar_27 * b_25) + ((a_24 * tmpvar_28) + b_25));
}

vec3 FxaaFilterReturn (
  in vec3 rgb_29
)
{
  return rgb_29;
}

vec3 FxaaPixelShader (
  in vec2 pos_30,
  in sampler2D tex_31,
  in vec2 rcpFrame_32
)
{
  vec3 rgbF_33;
  float subPixelOffset_34;
  float spanLength_35;
  bool directionN_36;
  float dstP_37;
  float dstN_38;
  int i_39;
  bool doneP_40;
  bool doneN_41;
  float lumaEndP_42;
  float lumaEndN_43;
  vec2 offNP_44;
  vec2 posP_45;
  vec2 posN_46;
  bool pairN_47;
  float gradientS_48;
  float gradientN_49;
  float lengthSign_50;
  bool horzSpan_51;
  float edgeHorz_52;
  float edgeVert_53;
  float lumaSE_54;
  float lumaSW_55;
  float lumaNE_56;
  float lumaNW_57;
  vec3 rgbSE_58;
  vec3 rgbSW_59;
  vec3 rgbNE_60;
  vec3 rgbNW_61;
  float blendL_62;
  float rangeL_63;
  float lumaL_64;
  vec3 rgbL_65;
  float range_66;
  float rangeMax_67;
  float rangeMin_68;
  float lumaS_69;
  float lumaE_70;
  float lumaM_71;
  float lumaW_72;
  float lumaN_73;
  vec3 rgbS_74;
  vec3 rgbE_75;
  vec3 rgbM_76;
  vec3 rgbW_77;
  vec3 rgbN_78;
  bool tmpvar_79;
  tmpvar_79 = bool(0);
  doneN_41 = tmpvar_79;
  bool tmpvar_80;
  tmpvar_80 = bool(0);
  doneP_40 = tmpvar_80;
  int tmpvar_81;
  tmpvar_81 = 0;
  i_39 = tmpvar_81;
  vec4 tmpvar_82;
  tmpvar_82 = FxaaTexOff (tex_31, pos_30.xy, vec2(0.0, -1.0), rcpFrame_32);
  vec3 tmpvar_83;
  tmpvar_83 = tmpvar_82.xyz;
  rgbN_78 = tmpvar_83;
  vec4 tmpvar_84;
  tmpvar_84 = FxaaTexOff (tex_31, pos_30.xy, vec2(-1.0, 0.0), rcpFrame_32);
  vec3 tmpvar_85;
  tmpvar_85 = tmpvar_84.xyz;
  rgbW_77 = tmpvar_85;
  vec4 tmpvar_86;
  tmpvar_86 = FxaaTexOff (tex_31, pos_30.xy, vec2(0.0, 0.0), rcpFrame_32);
  vec3 tmpvar_87;
  tmpvar_87 = tmpvar_86.xyz;
  rgbM_76 = tmpvar_87;
  vec4 tmpvar_88;
  tmpvar_88 = FxaaTexOff (tex_31, pos_30.xy, vec2(1.0, 0.0), rcpFrame_32);
  vec3 tmpvar_89;
  tmpvar_89 = tmpvar_88.xyz;
  rgbE_75 = tmpvar_89;
  vec4 tmpvar_90;
  tmpvar_90 = FxaaTexOff (tex_31, pos_30.xy, vec2(0.0, 1.0), rcpFrame_32);
  vec3 tmpvar_91;
  tmpvar_91 = tmpvar_90.xyz;
  rgbS_74 = tmpvar_91;
  float tmpvar_92;
  tmpvar_92 = FxaaLuma (rgbN_78);
  float tmpvar_93;
  tmpvar_93 = tmpvar_92;
  lumaN_73 = tmpvar_93;
  float tmpvar_94;
  tmpvar_94 = FxaaLuma (rgbW_77);
  float tmpvar_95;
  tmpvar_95 = tmpvar_94;
  lumaW_72 = tmpvar_95;
  float tmpvar_96;
  tmpvar_96 = FxaaLuma (rgbM_76);
  float tmpvar_97;
  tmpvar_97 = tmpvar_96;
  lumaM_71 = tmpvar_97;
  float tmpvar_98;
  tmpvar_98 = FxaaLuma (rgbE_75);
  float tmpvar_99;
  tmpvar_99 = tmpvar_98;
  lumaE_70 = tmpvar_99;
  float tmpvar_100;
  tmpvar_100 = FxaaLuma (rgbS_74);
  float tmpvar_101;
  tmpvar_101 = tmpvar_100;
  lumaS_69 = tmpvar_101;
  float tmpvar_102;
  tmpvar_102 = min (lumaN_73, lumaW_72);
  float tmpvar_103;
  tmpvar_103 = min (lumaS_69, lumaE_70);
  float tmpvar_104;
  tmpvar_104 = min (tmpvar_102, tmpvar_103);
  float tmpvar_105;
  tmpvar_105 = min (lumaM_71, tmpvar_104);
  float tmpvar_106;
  tmpvar_106 = tmpvar_105;
  rangeMin_68 = tmpvar_106;
  float tmpvar_107;
  tmpvar_107 = max (lumaN_73, lumaW_72);
  float tmpvar_108;
  tmpvar_108 = max (lumaS_69, lumaE_70);
  float tmpvar_109;
  tmpvar_109 = max (tmpvar_107, tmpvar_108);
  float tmpvar_110;
  tmpvar_110 = max (lumaM_71, tmpvar_109);
  float tmpvar_111;
  tmpvar_111 = tmpvar_110;
  rangeMax_67 = tmpvar_111;
  float tmpvar_112;
  tmpvar_112 = (rangeMax_67 - rangeMin_68);
  range_66 = tmpvar_112;
  float tmpvar_113;
  tmpvar_113 = max (0.0625, (rangeMax_67 * 0.125));
  if ((range_66 < tmpvar_113)) {
    vec3 tmpvar_114;
    tmpvar_114 = FxaaFilterReturn (rgbM_76);
    return tmpvar_114;
  };
  vec3 tmpvar_115;
  tmpvar_115 = (((
    (rgbN_78 + rgbW_77)
   + rgbM_76) + rgbE_75) + rgbS_74);
  rgbL_65 = tmpvar_115;
  float tmpvar_116;
  tmpvar_116 = (((
    (lumaN_73 + lumaW_72)
   + lumaE_70) + lumaS_69) * 0.25);
  lumaL_64 = tmpvar_116;
  float tmpvar_117;
  tmpvar_117 = abs ((lumaL_64 - lumaM_71));
  float tmpvar_118;
  tmpvar_118 = tmpvar_117;
  rangeL_63 = tmpvar_118;
  float tmpvar_119;
  tmpvar_119 = max (0.0, ((rangeL_63 / range_66) - 0.25));
  float tmpvar_120;
  tmpvar_120 = (tmpvar_119 * 1.33333);
  blendL_62 = tmpvar_120;
  float tmpvar_121;
  tmpvar_121 = min (0.75, blendL_62);
  float tmpvar_122;
  tmpvar_122 = tmpvar_121;
  blendL_62 = tmpvar_122;
  vec4 tmpvar_123;
  tmpvar_123 = FxaaTexOff (tex_31, pos_30.xy, vec2(-1.0, -1.0), rcpFrame_32);
  vec3 tmpvar_124;
  tmpvar_124 = tmpvar_123.xyz;
  rgbNW_61 = tmpvar_124;
  vec4 tmpvar_125;
  tmpvar_125 = FxaaTexOff (tex_31, pos_30.xy, vec2(1.0, -1.0), rcpFrame_32);
  vec3 tmpvar_126;
  tmpvar_126 = tmpvar_125.xyz;
  rgbNE_60 = tmpvar_126;
  vec4 tmpvar_127;
  tmpvar_127 = FxaaTexOff (tex_31, pos_30.xy, vec2(-1.0, 1.0), rcpFrame_32);
  vec3 tmpvar_128;
  tmpvar_128 = tmpvar_127.xyz;
  rgbSW_59 = tmpvar_128;
  vec4 tmpvar_129;
  tmpvar_129 = FxaaTexOff (tex_31, pos_30.xy, vec2(1.0, 1.0), rcpFrame_32);
  vec3 tmpvar_130;
  tmpvar_130 = tmpvar_129.xyz;
  rgbSE_58 = tmpvar_130;
  vec3 tmpvar_131;
  tmpvar_131 = (rgbL_65 + ((
    (rgbNW_61 + rgbNE_60)
   + rgbSW_59) + rgbSE_58));
  rgbL_65 = tmpvar_131;
  vec3 tmpvar_132;
  tmpvar_132 = (rgbL_65 * vec3(0.111111, 0.111111, 0.111111));
  rgbL_65 = tmpvar_132;
  float tmpvar_133;
  tmpvar_133 = FxaaLuma (rgbNW_61);
  float tmpvar_134;
  tmpvar_134 = tmpvar_133;
  lumaNW_57 = tmpvar_134;
  float tmpvar_135;
  tmpvar_135 = FxaaLuma (rgbNE_60);
  float tmpvar_136;
  tmpvar_136 = tmpvar_135;
  lumaNE_56 = tmpvar_136;
  float tmpvar_137;
  tmpvar_137 = FxaaLuma (rgbSW_59);
  float tmpvar_138;
  tmpvar_138 = tmpvar_137;
  lumaSW_55 = tmpvar_138;
  float tmpvar_139;
  tmpvar_139 = FxaaLuma (rgbSE_58);
  float tmpvar_140;
  tmpvar_140 = tmpvar_139;
  lumaSE_54 = tmpvar_140;
  float tmpvar_141;
  tmpvar_141 = abs ((((0.25 * lumaNW_57) + (
    -(0.5)
   * lumaN_73)) + (0.25 * lumaNE_56)));
  float tmpvar_142;
  tmpvar_142 = abs ((((0.5 * lumaW_72) + (
    -(1.0)
   * lumaM_71)) + (0.5 * lumaE_70)));
  float tmpvar_143;
  tmpvar_143 = abs ((((0.25 * lumaSW_55) + (
    -(0.5)
   * lumaS_69)) + (0.25 * lumaSE_54)));
  float tmpvar_144;
  tmpvar_144 = ((tmpvar_141 + tmpvar_142) + tmpvar_143);
  edgeVert_53 = tmpvar_144;
  float tmpvar_145;
  tmpvar_145 = abs ((((0.25 * lumaNW_57) + (
    -(0.5)
   * lumaW_72)) + (0.25 * lumaSW_55)));
  float tmpvar_146;
  tmpvar_146 = abs ((((0.5 * lumaN_73) + (
    -(1.0)
   * lumaM_71)) + (0.5 * lumaS_69)));
  float tmpvar_147;
  tmpvar_147 = abs ((((0.25 * lumaNE_56) + (
    -(0.5)
   * lumaE_70)) + (0.25 * lumaSE_54)));
  float tmpvar_148;
  tmpvar_148 = ((tmpvar_145 + tmpvar_146) + tmpvar_147);
  edgeHorz_52 = tmpvar_148;
  bool tmpvar_149;
  tmpvar_149 = (edgeHorz_52 >= edgeVert_53);
  horzSpan_51 = tmpvar_149;
  float tmpvar_150;
  if (horzSpan_51) {
    tmpvar_150 = -(rcpFrame_32.y);
  } else {
    tmpvar_150 = -(rcpFrame_32.x);
  };
  float tmpvar_151;
  tmpvar_151 = tmpvar_150;
  lengthSign_50 = tmpvar_151;
  if (!(horzSpan_51)) {
    float tmpvar_152;
    tmpvar_152 = lumaW_72;
    lumaN_73 = tmpvar_152;
  };
  if (!(horzSpan_51)) {
    float tmpvar_153;
    tmpvar_153 = lumaE_70;
    lumaS_69 = tmpvar_153;
  };
  float tmpvar_154;
  tmpvar_154 = abs ((lumaN_73 - lumaM_71));
  float tmpvar_155;
  tmpvar_155 = tmpvar_154;
  gradientN_49 = tmpvar_155;
  float tmpvar_156;
  tmpvar_156 = abs ((lumaS_69 - lumaM_71));
  float tmpvar_157;
  tmpvar_157 = tmpvar_156;
  gradientS_48 = tmpvar_157;
  float tmpvar_158;
  tmpvar_158 = ((lumaN_73 + lumaM_71) * 0.5);
  lumaN_73 = tmpvar_158;
  float tmpvar_159;
  tmpvar_159 = ((lumaS_69 + lumaM_71) * 0.5);
  lumaS_69 = tmpvar_159;
  bool tmpvar_160;
  tmpvar_160 = (gradientN_49 >= gradientS_48);
  pairN_47 = tmpvar_160;
  if (!(pairN_47)) {
    float tmpvar_161;
    tmpvar_161 = lumaS_69;
    lumaN_73 = tmpvar_161;
  };
  if (!(pairN_47)) {
    float tmpvar_162;
    tmpvar_162 = gradientS_48;
    gradientN_49 = tmpvar_162;
  };
  if (!(pairN_47)) {
    float tmpvar_163;
    tmpvar_163 = (lengthSign_50 * -(1.0));
    lengthSign_50 = tmpvar_163;
  };
  float tmpvar_164;
  if (horzSpan_51) {
    tmpvar_164 = 0.0;
  } else {
    tmpvar_164 = (lengthSign_50 * 0.5);
  };
  float tmpvar_165;
  tmpvar_165 = (pos_30.x + tmpvar_164);
  posN_46.x = tmpvar_165;
  float tmpvar_166;
  if (horzSpan_51) {
    tmpvar_166 = (lengthSign_50 * 0.5);
  } else {
    tmpvar_166 = 0.0;
  };
  float tmpvar_167;
  tmpvar_167 = (pos_30.y + tmpvar_166);
  posN_46.y = vec2(tmpvar_167).y;
  float tmpvar_168;
  tmpvar_168 = (gradientN_49 * 0.25);
  gradientN_49 = tmpvar_168;
  vec2 tmpvar_169;
  tmpvar_169 = posN_46;
  posP_45 = tmpvar_169;
  vec2 tmpvar_170;
  if (horzSpan_51) {
    vec2 tmpvar_171;
    tmpvar_171.y = 0.0;
    tmpvar_171.x = rcpFrame_32.x;
    tmpvar_170 = tmpvar_171;
  } else {
    vec2 tmpvar_172;
    tmpvar_172.x = 0.0;
    tmpvar_172.y = rcpFrame_32.y;
    tmpvar_170 = tmpvar_172;
  };
  vec2 tmpvar_173;
  tmpvar_173 = tmpvar_170;
  offNP_44 = tmpvar_173;
  float tmpvar_174;
  tmpvar_174 = lumaN_73;
  lumaEndN_43 = tmpvar_174;
  float tmpvar_175;
  tmpvar_175 = lumaN_73;
  lumaEndP_42 = tmpvar_175;
  vec2 tmpvar_176;
  tmpvar_176 = (posN_46 + (offNP_44 * vec2(-2.0, -2.0)));
  posN_46 = tmpvar_176;
  vec2 tmpvar_177;
  tmpvar_177 = (posP_45 + (offNP_44 * vec2(2.0, 2.0)));
  posP_45 = tmpvar_177;
  vec2 tmpvar_178;
  tmpvar_178 = (offNP_44 * vec2(3.0, 3.0));
  offNP_44 = tmpvar_178;
  while (true) {
    if (!((i_39 < 4))) {
      break;
    };
    if (!(doneN_41)) {
      vec4 tmpvar_179;
      tmpvar_179 = FxaaTexGrad (tex_31, posN_46.xy, offNP_44);
      float tmpvar_180;
      tmpvar_180 = FxaaLuma (tmpvar_179.xyz);
      float tmpvar_181;
      tmpvar_181 = tmpvar_180;
      lumaEndN_43 = tmpvar_181;
    };
    if (!(doneP_40)) {
      vec4 tmpvar_182;
      tmpvar_182 = FxaaTexGrad (tex_31, posP_45.xy, offNP_44);
      float tmpvar_183;
      tmpvar_183 = FxaaLuma (tmpvar_182.xyz);
      float tmpvar_184;
      tmpvar_184 = tmpvar_183;
      lumaEndP_42 = tmpvar_184;
    };
    bool tmpvar_185;
    if (doneN_41) {
      tmpvar_185 = bool(1);
    } else {
      float tmpvar_186;
      tmpvar_186 = abs ((lumaEndN_43 - lumaN_73));
      tmpvar_185 = (tmpvar_186 >= gradientN_49);
    };
    bool tmpvar_187;
    tmpvar_187 = tmpvar_185;
    doneN_41 = tmpvar_187;
    bool tmpvar_188;
    if (doneP_40) {
      tmpvar_188 = bool(1);
    } else {
      float tmpvar_189;
      tmpvar_189 = abs ((lumaEndP_42 - lumaN_73));
      tmpvar_188 = (tmpvar_189 >= gradientN_49);
    };
    bool tmpvar_190;
    tmpvar_190 = tmpvar_188;
    doneP_40 = tmpvar_190;
    if ((doneN_41 && doneP_40)) {
      break;
    };
    if (!(doneN_41)) {
      vec2 tmpvar_191;
      tmpvar_191 = (posN_46 - offNP_44);
      posN_46 = tmpvar_191;
    };
    if (!(doneP_40)) {
      vec2 tmpvar_192;
      tmpvar_192 = (posP_45 + offNP_44);
      posP_45 = tmpvar_192;
    };
    int _post_incdec_tmp_193;
    _post_incdec_tmp_193 = i_39;
    int tmpvar_194;
    tmpvar_194 = (i_39 + 1);
    i_39 = tmpvar_194;
  };
  float tmpvar_195;
  if (horzSpan_51) {
    tmpvar_195 = (pos_30.x - posN_46.x);
  } else {
    tmpvar_195 = (pos_30.y - posN_46.y);
  };
  float tmpvar_196;
  tmpvar_196 = tmpvar_195;
  dstN_38 = tmpvar_196;
  float tmpvar_197;
  if (horzSpan_51) {
    tmpvar_197 = (posP_45.x - pos_30.x);
  } else {
    tmpvar_197 = (posP_45.y - pos_30.y);
  };
  float tmpvar_198;
  tmpvar_198 = tmpvar_197;
  dstP_37 = tmpvar_198;
  bool tmpvar_199;
  tmpvar_199 = (dstN_38 < dstP_37);
  directionN_36 = tmpvar_199;
  float tmpvar_200;
  if (directionN_36) {
    tmpvar_200 = lumaEndN_43;
  } else {
    tmpvar_200 = lumaEndP_42;
  };
  float tmpvar_201;
  tmpvar_201 = tmpvar_200;
  lumaEndN_43 = tmpvar_201;
  if ((((lumaM_71 - lumaN_73) < 0.0) == ((lumaEndN_43 - lumaN_73) < 0.0))) {
    float tmpvar_202;
    tmpvar_202 = 0.0;
    lengthSign_50 = tmpvar_202;
  };
  float tmpvar_203;
  tmpvar_203 = (dstP_37 + dstN_38);
  spanLength_35 = tmpvar_203;
  float tmpvar_204;
  if (directionN_36) {
    tmpvar_204 = dstN_38;
  } else {
    tmpvar_204 = dstP_37;
  };
  float tmpvar_205;
  tmpvar_205 = tmpvar_204;
  dstN_38 = tmpvar_205;
  float tmpvar_206;
  tmpvar_206 = ((0.5 + (dstN_38 * 
    (-(1.0) / spanLength_35)
  )) * lengthSign_50);
  subPixelOffset_34 = tmpvar_206;
  float tmpvar_207;
  if (horzSpan_51) {
    tmpvar_207 = 0.0;
  } else {
    tmpvar_207 = subPixelOffset_34;
  };
  float tmpvar_208;
  if (horzSpan_51) {
    tmpvar_208 = subPixelOffset_34;
  } else {
    tmpvar_208 = 0.0;
  };
  vec2 tmpvar_209;
  tmpvar_209.x = (pos_30.x + tmpvar_207);
  tmpvar_209.y = (pos_30.y + tmpvar_208);
  vec4 tmpvar_210;
  tmpvar_210 = FxaaTexLod0 (tex_31, tmpvar_209);
  vec3 tmpvar_211;
  tmpvar_211 = tmpvar_210.xyz;
  rgbF_33 = tmpvar_211;
  vec3 tmpvar_212;
  tmpvar_212 = FxaaLerp3 (rgbL_65, rgbF_33, blendL_62);
  vec3 tmpvar_213;
  tmpvar_213 = FxaaFilterReturn (tmpvar_212);
  return tmpvar_213;
}

vec4 xlat_main (
  in vec2 uv_214
)
{
  vec3 tmpvar_215;
  tmpvar_215 = FxaaPixelShader (uv_214.xy, _MainTex, _MainTex_TexelSize.xy);
  vec4 tmpvar_216;
  tmpvar_216.w = 0.0;
  tmpvar_216.xyz = tmpvar_215.xyz.xyz;
  return tmpvar_216;
}

void main ()
{
  vec4 xl_retval_217;
  vec2 tmpvar_218;
  tmpvar_218 = xlv_TEXCOORD0.xy;
  vec4 tmpvar_219;
  tmpvar_219 = xlat_main (tmpvar_218);
  vec4 tmpvar_220;
  tmpvar_220 = tmpvar_219;
  xl_retval_217 = tmpvar_220;
  vec4 tmpvar_221;
  tmpvar_221 = xl_retval_217.xyzw;
  vec4 tmpvar_222;
  tmpvar_222 = tmpvar_221;
  gl_FragData[0] = tmpvar_222;
}