bgfx/3rdparty/glsl-optimizer/tests/fragment/zun-SSAO8-irES.txt

struct v2f_ao {
  highp vec4 pos;
  highp vec2 uv;
  highp vec2 uvr;
};
uniform sampler2D _CameraDepthNormalsTexture;
uniform sampler2D _RandomTexture;
uniform highp vec4 _Params;
uniform highp vec4 _ProjectionParams;
varying highp vec2 xlv_TEXCOORD0;
varying highp vec2 xlv_TEXCOORD1;
mediump float xll_saturate_f (
  in mediump float x_1
)
{
  mediump float tmpvar_2;
  tmpvar_2 = clamp (x_1, 0.0, 1.0);
  return tmpvar_2;
}

mediump vec2 xll_saturate_vf2 (
  in mediump vec2 x_3
)
{
  mediump vec2 tmpvar_4;
  tmpvar_4 = clamp (x_3, 0.0, 1.0);
  return tmpvar_4;
}

mediump vec3 xll_saturate_vf3 (
  in mediump vec3 x_5
)
{
  mediump vec3 tmpvar_6;
  tmpvar_6 = clamp (x_5, 0.0, 1.0);
  return tmpvar_6;
}

mediump vec4 xll_saturate_vf4 (
  in mediump vec4 x_7
)
{
  mediump vec4 tmpvar_8;
  tmpvar_8 = clamp (x_7, 0.0, 1.0);
  return tmpvar_8;
}

mediump mat2 xll_saturate_mf2x2 (
  in mediump mat2 m_9
)
{
  mediump vec2 tmpvar_10;
  tmpvar_10 = clamp (m_9[0], 0.0, 1.0);
  mediump vec2 tmpvar_11;
  tmpvar_11 = clamp (m_9[1], 0.0, 1.0);
  mediump mat2 tmpvar_12;
  mediump vec2 tmpvar_13;
  tmpvar_13 = tmpvar_10;
  tmpvar_12[0] = tmpvar_13;
  mediump vec2 tmpvar_14;
  tmpvar_14 = tmpvar_11;
  tmpvar_12[1] = tmpvar_14;
  return tmpvar_12;
}

mediump mat3 xll_saturate_mf3x3 (
  in mediump mat3 m_15
)
{
  mediump vec3 tmpvar_16;
  tmpvar_16 = clamp (m_15[0], 0.0, 1.0);
  mediump vec3 tmpvar_17;
  tmpvar_17 = clamp (m_15[1], 0.0, 1.0);
  mediump vec3 tmpvar_18;
  tmpvar_18 = clamp (m_15[2], 0.0, 1.0);
  mediump mat3 tmpvar_19;
  mediump vec3 tmpvar_20;
  tmpvar_20 = tmpvar_16;
  tmpvar_19[0] = tmpvar_20;
  mediump vec3 tmpvar_21;
  tmpvar_21 = tmpvar_17;
  tmpvar_19[1] = tmpvar_21;
  mediump vec3 tmpvar_22;
  tmpvar_22 = tmpvar_18;
  tmpvar_19[2] = tmpvar_22;
  return tmpvar_19;
}

mediump mat4 xll_saturate_mf4x4 (
  in mediump mat4 m_23
)
{
  mediump vec4 tmpvar_24;
  tmpvar_24 = clamp (m_23[0], 0.0, 1.0);
  mediump vec4 tmpvar_25;
  tmpvar_25 = clamp (m_23[1], 0.0, 1.0);
  mediump vec4 tmpvar_26;
  tmpvar_26 = clamp (m_23[2], 0.0, 1.0);
  mediump vec4 tmpvar_27;
  tmpvar_27 = clamp (m_23[3], 0.0, 1.0);
  mediump mat4 tmpvar_28;
  mediump vec4 tmpvar_29;
  tmpvar_29 = tmpvar_24;
  tmpvar_28[0] = tmpvar_29;
  mediump vec4 tmpvar_30;
  tmpvar_30 = tmpvar_25;
  tmpvar_28[1] = tmpvar_30;
  mediump vec4 tmpvar_31;
  tmpvar_31 = tmpvar_26;
  tmpvar_28[2] = tmpvar_31;
  mediump vec4 tmpvar_32;
  tmpvar_32 = tmpvar_27;
  tmpvar_28[3] = tmpvar_32;
  return tmpvar_28;
}

float DecodeFloatRG (
  in highp vec2 enc_33
)
{
  highp vec2 kDecodeDot_34;
  mediump vec2 tmpvar_35;
  tmpvar_35 = vec2(1.0, 0.00392157);
  kDecodeDot_34 = tmpvar_35;
  highp float tmpvar_36;
  tmpvar_36 = dot (enc_33, kDecodeDot_34);
  return tmpvar_36;
}

vec3 DecodeViewNormalStereo (
  in highp vec4 enc4_37
)
{
  highp vec3 n_38;
  highp float g_39;
  highp vec3 nn_40;
  highp float kScale_41;
  mediump float tmpvar_42;
  tmpvar_42 = 1.7777;
  kScale_41 = tmpvar_42;
  highp vec3 tmpvar_43;
  tmpvar_43.z = 0.0;
  tmpvar_43.x = (2.0 * kScale_41);
  tmpvar_43.y = (2.0 * kScale_41);
  highp vec3 tmpvar_44;
  tmpvar_44.z = 1.0;
  tmpvar_44.x = -(kScale_41);
  tmpvar_44.y = -(kScale_41);
  highp vec3 tmpvar_45;
  tmpvar_45 = ((enc4_37.xyz * tmpvar_43) + tmpvar_44);
  nn_40 = tmpvar_45;
  highp float tmpvar_46;
  tmpvar_46 = dot (nn_40.xyz, nn_40.xyz);
  highp float tmpvar_47;
  tmpvar_47 = (2.0 / tmpvar_46);
  g_39 = tmpvar_47;
  highp vec2 tmpvar_48;
  tmpvar_48 = (g_39 * nn_40.xy);
  n_38.xy = tmpvar_48.xy.xy;
  highp float tmpvar_49;
  tmpvar_49 = (g_39 - 1.0);
  n_38.z = vec3(tmpvar_49).z;
  return n_38;
}

void DecodeDepthNormal (
  in highp vec4 enc_50,
  out highp float depth_51,
  out highp vec3 normal_52
)
{
  highp float tmpvar_53;
  tmpvar_53 = DecodeFloatRG (enc_50.zw);
  highp float tmpvar_54;
  tmpvar_54 = tmpvar_53;
  depth_51 = tmpvar_54;
  highp vec3 tmpvar_55;
  tmpvar_55 = DecodeViewNormalStereo (enc_50);
  highp vec3 tmpvar_56;
  tmpvar_56 = tmpvar_55;
  normal_52 = tmpvar_56;
}

mediump float frag_ao (
  in v2f_ao i_57,
  in int sampleCount_58,
  in highp vec3 samples_59[8]
)
{
  int s_60;
  highp float occ_61;
  highp float scale_62;
  highp float depth_63;
  highp vec3 viewNorm_64;
  highp vec4 depthnormal_65;
  mediump vec3 randN_66;
  lowp vec4 tmpvar_67;
  tmpvar_67 = texture2D (_RandomTexture, i_57.uvr);
  lowp vec3 tmpvar_68;
  tmpvar_68 = ((tmpvar_67.xyz * 2.0) - 1.0);
  randN_66 = tmpvar_68;
  lowp vec4 tmpvar_69;
  tmpvar_69 = texture2D (_CameraDepthNormalsTexture, i_57.uv);
  lowp vec4 tmpvar_70;
  tmpvar_70 = tmpvar_69;
  depthnormal_65 = tmpvar_70;
  DecodeDepthNormal (depthnormal_65, depth_63, viewNorm_64);
  highp float tmpvar_71;
  tmpvar_71 = (depth_63 * _ProjectionParams.z);
  depth_63 = tmpvar_71;
  highp float tmpvar_72;
  tmpvar_72 = (_Params.x / depth_63);
  scale_62 = tmpvar_72;
  mediump float tmpvar_73;
  tmpvar_73 = 0.0;
  occ_61 = tmpvar_73;
  int tmpvar_74;
  tmpvar_74 = 0;
  s_60 = tmpvar_74;
  while (true) {
    highp float zd_75;
    highp vec3 sampleN_76;
    highp float sampleD_77;
    highp vec4 sampleND_78;
    highp float sD_79;
    highp vec2 offset_80;
    mediump float flip_81;
    mediump vec3 randomDir_82;
    if (!((s_60 < sampleCount_58))) {
      break;
    };
    highp vec3 tmpvar_83;
    tmpvar_83 = reflect (samples_59[s_60], randN_66);
    highp vec3 tmpvar_84;
    tmpvar_84 = tmpvar_83;
    randomDir_82 = tmpvar_84;
    highp float tmpvar_85;
    tmpvar_85 = dot (viewNorm_64, randomDir_82);
    mediump float tmpvar_86;
    if ((tmpvar_85 < 0.0)) {
      tmpvar_86 = 1.0;
    } else {
      tmpvar_86 = -(1.0);
    };
    mediump float tmpvar_87;
    tmpvar_87 = tmpvar_86;
    flip_81 = tmpvar_87;
    mediump vec3 tmpvar_88;
    tmpvar_88 = (randomDir_82 * -(flip_81));
    randomDir_82 = tmpvar_88;
    highp vec3 tmpvar_89;
    tmpvar_89 = (randomDir_82 + (viewNorm_64 * 0.3));
    randomDir_82 = tmpvar_89;
    highp vec2 tmpvar_90;
    tmpvar_90 = (randomDir_82.xy * scale_62);
    offset_80 = tmpvar_90;
    highp float tmpvar_91;
    tmpvar_91 = (depth_63 - (randomDir_82.z * _Params.x));
    sD_79 = tmpvar_91;
    lowp vec4 tmpvar_92;
    tmpvar_92 = texture2D (_CameraDepthNormalsTexture, (i_57.uv + offset_80));
    lowp vec4 tmpvar_93;
    tmpvar_93 = tmpvar_92;
    sampleND_78 = tmpvar_93;
    DecodeDepthNormal (sampleND_78, sampleD_77, sampleN_76);
    highp float tmpvar_94;
    tmpvar_94 = (sampleD_77 * _ProjectionParams.z);
    sampleD_77 = tmpvar_94;
    mediump float tmpvar_95;
    tmpvar_95 = xll_saturate_f ((sD_79 - sampleD_77));
    mediump float tmpvar_96;
    tmpvar_96 = tmpvar_95;
    zd_75 = tmpvar_96;
    if ((zd_75 > _Params.y)) {
      highp float tmpvar_97;
      tmpvar_97 = pow ((1.0 - zd_75), _Params.z);
      highp float tmpvar_98;
      tmpvar_98 = (occ_61 + tmpvar_97);
      occ_61 = tmpvar_98;
    };
    int tmpvar_99;
    tmpvar_99 = (s_60 + 1);
    s_60 = tmpvar_99;
  };
  highp float tmpvar_100;
  tmpvar_100 = (occ_61 / float(sampleCount_58));
  occ_61 = tmpvar_100;
  return (1.0 - occ_61);
}

mediump vec4 xlat_main (
  in v2f_ao i_101
)
{
  highp vec3 RAND_SAMPLES_102[8];
  mediump vec3 tmpvar_103;
  tmpvar_103 = vec3(0.0130572, 0.587232, -0.119337);
  RAND_SAMPLES_102[0] = tmpvar_103;
  mediump vec3 tmpvar_104;
  tmpvar_104 = vec3(0.323078, 0.0220727, -0.418873);
  RAND_SAMPLES_102[1] = tmpvar_104;
  mediump vec3 tmpvar_105;
  tmpvar_105 = vec3(-0.310725, -0.191367, 0.0561369);
  RAND_SAMPLES_102[2] = tmpvar_105;
  mediump vec3 tmpvar_106;
  tmpvar_106 = vec3(-0.479646, 0.0939877, -0.580265);
  RAND_SAMPLES_102[3] = tmpvar_106;
  mediump vec3 tmpvar_107;
  tmpvar_107 = vec3(0.139999, -0.33577, 0.559679);
  RAND_SAMPLES_102[4] = tmpvar_107;
  mediump vec3 tmpvar_108;
  tmpvar_108 = vec3(-0.248458, 0.255532, 0.348944);
  RAND_SAMPLES_102[5] = tmpvar_108;
  mediump vec3 tmpvar_109;
  tmpvar_109 = vec3(0.18719, -0.702764, -0.231748);
  RAND_SAMPLES_102[6] = tmpvar_109;
  mediump vec3 tmpvar_110;
  tmpvar_110 = vec3(0.884915, 0.284208, 0.368524);
  RAND_SAMPLES_102[7] = tmpvar_110;
  mediump float tmpvar_111;
  tmpvar_111 = frag_ao (i_101, 8, RAND_SAMPLES_102);
  mediump vec4 tmpvar_112;
  tmpvar_112 = vec4(tmpvar_111);
  return tmpvar_112;
}

void main ()
{
  v2f_ao xlt_i_113;
  mediump vec4 xl_retval_114;
  mediump vec4 tmpvar_115;
  tmpvar_115 = vec4(0.0, 0.0, 0.0, 0.0);
  xlt_i_113.pos = tmpvar_115;
  highp vec2 tmpvar_116;
  tmpvar_116 = xlv_TEXCOORD0.xy;
  highp vec2 tmpvar_117;
  tmpvar_117 = tmpvar_116;
  xlt_i_113.uv = tmpvar_117;
  highp vec2 tmpvar_118;
  tmpvar_118 = xlv_TEXCOORD1.xy;
  highp vec2 tmpvar_119;
  tmpvar_119 = tmpvar_118;
  xlt_i_113.uvr = tmpvar_119;
  mediump vec4 tmpvar_120;
  tmpvar_120 = xlat_main (xlt_i_113);
  mediump vec4 tmpvar_121;
  tmpvar_121 = tmpvar_120;
  xl_retval_114 = tmpvar_121;
  mediump vec4 tmpvar_122;
  tmpvar_122 = xl_retval_114.xyzw;
  mediump vec4 tmpvar_123;
  tmpvar_123 = tmpvar_122;
  gl_FragData[0] = tmpvar_123;
}