bgfx/3rdparty/glsl-optimizer/tests/fragment/zun-SSAO24-ir.txt

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

float DecodeFloatRG (
  in vec2 enc_3
)
{
  vec2 kDecodeDot_4;
  vec2 tmpvar_5;
  tmpvar_5 = vec2(1.0, 0.00392157);
  kDecodeDot_4 = tmpvar_5;
  float tmpvar_6;
  tmpvar_6 = dot (enc_3, kDecodeDot_4);
  return tmpvar_6;
}

vec3 DecodeViewNormalStereo (
  in vec4 enc4_7
)
{
  vec3 n_8;
  float g_9;
  vec3 nn_10;
  float kScale_11;
  float tmpvar_12;
  tmpvar_12 = 1.7777;
  kScale_11 = tmpvar_12;
  vec3 tmpvar_13;
  tmpvar_13.z = 0.0;
  tmpvar_13.x = (2.0 * kScale_11);
  tmpvar_13.y = (2.0 * kScale_11);
  vec3 tmpvar_14;
  tmpvar_14.z = 1.0;
  tmpvar_14.x = -(kScale_11);
  tmpvar_14.y = -(kScale_11);
  vec3 tmpvar_15;
  tmpvar_15 = ((enc4_7.xyz * tmpvar_13) + tmpvar_14);
  nn_10 = tmpvar_15;
  float tmpvar_16;
  tmpvar_16 = dot (nn_10.xyz, nn_10.xyz);
  float tmpvar_17;
  tmpvar_17 = (2.0 / tmpvar_16);
  g_9 = tmpvar_17;
  vec2 tmpvar_18;
  tmpvar_18 = (g_9 * nn_10.xy);
  n_8.xy = tmpvar_18.xy.xy;
  float tmpvar_19;
  tmpvar_19 = (g_9 - 1.0);
  n_8.z = vec3(tmpvar_19).z;
  return n_8;
}

void DecodeDepthNormal (
  in vec4 enc_20,
  out float depth_21,
  out vec3 normal_22
)
{
  float tmpvar_23;
  tmpvar_23 = DecodeFloatRG (enc_20.zw);
  float tmpvar_24;
  tmpvar_24 = tmpvar_23;
  depth_21 = tmpvar_24;
  vec3 tmpvar_25;
  tmpvar_25 = DecodeViewNormalStereo (enc_20);
  vec3 tmpvar_26;
  tmpvar_26 = tmpvar_25;
  normal_22 = tmpvar_26;
}

float frag_ao (
  in v2f_ao i_27,
  in int sampleCount_28,
  in vec3 samples_29[24]
)
{
  int s_30;
  float occ_31;
  float scale_32;
  float depth_33;
  vec3 viewNorm_34;
  vec4 depthnormal_35;
  vec3 randN_36;
  vec4 tmpvar_37;
  tmpvar_37 = texture2D (_RandomTexture, i_27.uvr);
  vec3 tmpvar_38;
  tmpvar_38 = ((tmpvar_37.xyz * 2.0) - 1.0);
  randN_36 = tmpvar_38;
  vec4 tmpvar_39;
  tmpvar_39 = texture2D (_CameraDepthNormalsTexture, i_27.uv);
  vec4 tmpvar_40;
  tmpvar_40 = tmpvar_39;
  depthnormal_35 = tmpvar_40;
  DecodeDepthNormal (depthnormal_35, depth_33, viewNorm_34);
  float tmpvar_41;
  tmpvar_41 = (depth_33 * _ProjectionParams.z);
  depth_33 = tmpvar_41;
  float tmpvar_42;
  tmpvar_42 = (_Params.x / depth_33);
  scale_32 = tmpvar_42;
  float tmpvar_43;
  tmpvar_43 = 0.0;
  occ_31 = tmpvar_43;
  int tmpvar_44;
  tmpvar_44 = 0;
  s_30 = tmpvar_44;
  while (true) {
    float zd_45;
    vec3 sampleN_46;
    float sampleD_47;
    vec4 sampleND_48;
    float sD_49;
    vec2 offset_50;
    float flip_51;
    vec3 randomDir_52;
    if (!((s_30 < sampleCount_28))) {
      break;
    };
    vec3 tmpvar_53;
    tmpvar_53 = reflect (samples_29[s_30], randN_36);
    vec3 tmpvar_54;
    tmpvar_54 = tmpvar_53;
    randomDir_52 = tmpvar_54;
    float tmpvar_55;
    tmpvar_55 = dot (viewNorm_34, randomDir_52);
    float tmpvar_56;
    if ((tmpvar_55 < 0.0)) {
      tmpvar_56 = 1.0;
    } else {
      tmpvar_56 = -(1.0);
    };
    float tmpvar_57;
    tmpvar_57 = tmpvar_56;
    flip_51 = tmpvar_57;
    vec3 tmpvar_58;
    tmpvar_58 = (randomDir_52 * -(flip_51));
    randomDir_52 = tmpvar_58;
    vec3 tmpvar_59;
    tmpvar_59 = (randomDir_52 + (viewNorm_34 * 0.3));
    randomDir_52 = tmpvar_59;
    vec2 tmpvar_60;
    tmpvar_60 = (randomDir_52.xy * scale_32);
    offset_50 = tmpvar_60;
    float tmpvar_61;
    tmpvar_61 = (depth_33 - (randomDir_52.z * _Params.x));
    sD_49 = tmpvar_61;
    vec4 tmpvar_62;
    tmpvar_62 = texture2D (_CameraDepthNormalsTexture, (i_27.uv + offset_50));
    vec4 tmpvar_63;
    tmpvar_63 = tmpvar_62;
    sampleND_48 = tmpvar_63;
    DecodeDepthNormal (sampleND_48, sampleD_47, sampleN_46);
    float tmpvar_64;
    tmpvar_64 = (sampleD_47 * _ProjectionParams.z);
    sampleD_47 = tmpvar_64;
    float tmpvar_65;
    tmpvar_65 = xll_saturate_f ((sD_49 - sampleD_47));
    float tmpvar_66;
    tmpvar_66 = tmpvar_65;
    zd_45 = tmpvar_66;
    if ((zd_45 > _Params.y)) {
      float tmpvar_67;
      tmpvar_67 = pow ((1.0 - zd_45), _Params.z);
      float tmpvar_68;
      tmpvar_68 = (occ_31 + tmpvar_67);
      occ_31 = tmpvar_68;
    };
    int tmpvar_69;
    tmpvar_69 = (s_30 + 1);
    s_30 = tmpvar_69;
  };
  float tmpvar_70;
  tmpvar_70 = (occ_31 / float(sampleCount_28));
  occ_31 = tmpvar_70;
  return (1.0 - occ_31);
}

vec4 frag (
  in v2f_ao i_71
)
{
  vec3 RAND_SAMPLES_72[24];
  vec3 tmpvar_73;
  tmpvar_73 = vec3(0.0130572, 0.587232, -0.119337);
  RAND_SAMPLES_72[0] = tmpvar_73;
  vec3 tmpvar_74;
  tmpvar_74 = vec3(0.323078, 0.0220727, -0.418873);
  RAND_SAMPLES_72[1] = tmpvar_74;
  vec3 tmpvar_75;
  tmpvar_75 = vec3(-0.310725, -0.191367, 0.0561369);
  RAND_SAMPLES_72[2] = tmpvar_75;
  vec3 tmpvar_76;
  tmpvar_76 = vec3(-0.479646, 0.0939877, -0.580265);
  RAND_SAMPLES_72[3] = tmpvar_76;
  vec3 tmpvar_77;
  tmpvar_77 = vec3(0.139999, -0.33577, 0.559679);
  RAND_SAMPLES_72[4] = tmpvar_77;
  vec3 tmpvar_78;
  tmpvar_78 = vec3(-0.248458, 0.255532, 0.348944);
  RAND_SAMPLES_72[5] = tmpvar_78;
  vec3 tmpvar_79;
  tmpvar_79 = vec3(0.18719, -0.702764, -0.231748);
  RAND_SAMPLES_72[6] = tmpvar_79;
  vec3 tmpvar_80;
  tmpvar_80 = vec3(0.884915, 0.284208, 0.368524);
  RAND_SAMPLES_72[7] = tmpvar_80;
  vec3 tmpvar_81;
  tmpvar_81 = vec3(0.0130572, 0.587232, -0.119337);
  RAND_SAMPLES_72[8] = tmpvar_81;
  vec3 tmpvar_82;
  tmpvar_82 = vec3(0.323078, 0.0220727, -0.418873);
  RAND_SAMPLES_72[9] = tmpvar_82;
  vec3 tmpvar_83;
  tmpvar_83 = vec3(-0.310725, -0.191367, 0.0561369);
  RAND_SAMPLES_72[10] = tmpvar_83;
  vec3 tmpvar_84;
  tmpvar_84 = vec3(-0.479646, 0.0939877, -0.580265);
  RAND_SAMPLES_72[11] = tmpvar_84;
  vec3 tmpvar_85;
  tmpvar_85 = vec3(0.139999, -0.33577, 0.559679);
  RAND_SAMPLES_72[12] = tmpvar_85;
  vec3 tmpvar_86;
  tmpvar_86 = vec3(-0.248458, 0.255532, 0.348944);
  RAND_SAMPLES_72[13] = tmpvar_86;
  vec3 tmpvar_87;
  tmpvar_87 = vec3(0.18719, -0.702764, -0.231748);
  RAND_SAMPLES_72[14] = tmpvar_87;
  vec3 tmpvar_88;
  tmpvar_88 = vec3(0.884915, 0.284208, 0.368524);
  RAND_SAMPLES_72[15] = tmpvar_88;
  vec3 tmpvar_89;
  tmpvar_89 = vec3(0.0130572, 0.587232, -0.119337);
  RAND_SAMPLES_72[16] = tmpvar_89;
  vec3 tmpvar_90;
  tmpvar_90 = vec3(0.323078, 0.0220727, -0.418873);
  RAND_SAMPLES_72[17] = tmpvar_90;
  vec3 tmpvar_91;
  tmpvar_91 = vec3(-0.310725, -0.191367, 0.0561369);
  RAND_SAMPLES_72[18] = tmpvar_91;
  vec3 tmpvar_92;
  tmpvar_92 = vec3(-0.479646, 0.0939877, -0.580265);
  RAND_SAMPLES_72[19] = tmpvar_92;
  vec3 tmpvar_93;
  tmpvar_93 = vec3(0.139999, -0.33577, 0.559679);
  RAND_SAMPLES_72[20] = tmpvar_93;
  vec3 tmpvar_94;
  tmpvar_94 = vec3(-0.248458, 0.255532, 0.348944);
  RAND_SAMPLES_72[21] = tmpvar_94;
  vec3 tmpvar_95;
  tmpvar_95 = vec3(0.18719, -0.702764, -0.231748);
  RAND_SAMPLES_72[22] = tmpvar_95;
  vec3 tmpvar_96;
  tmpvar_96 = vec3(0.884915, 0.284208, 0.368524);
  RAND_SAMPLES_72[23] = tmpvar_96;
  float tmpvar_97;
  tmpvar_97 = frag_ao (i_71, 24, RAND_SAMPLES_72);
  vec4 tmpvar_98;
  tmpvar_98 = vec4(tmpvar_97);
  return tmpvar_98;
}

void main ()
{
  v2f_ao xlt_i_99;
  vec4 xl_retval_100;
  vec4 tmpvar_101;
  tmpvar_101 = vec4(0.0, 0.0, 0.0, 0.0);
  xlt_i_99.pos = tmpvar_101;
  vec2 tmpvar_102;
  tmpvar_102 = xlv_TEXCOORD0.xy;
  vec2 tmpvar_103;
  tmpvar_103 = tmpvar_102;
  xlt_i_99.uv = tmpvar_103;
  vec2 tmpvar_104;
  tmpvar_104 = xlv_TEXCOORD1.xy;
  vec2 tmpvar_105;
  tmpvar_105 = tmpvar_104;
  xlt_i_99.uvr = tmpvar_105;
  vec4 tmpvar_106;
  tmpvar_106 = frag (xlt_i_99);
  vec4 tmpvar_107;
  tmpvar_107 = tmpvar_106;
  xl_retval_100 = tmpvar_107;
  vec4 tmpvar_108;
  tmpvar_108 = xl_retval_100.xyzw;
  vec4 tmpvar_109;
  tmpvar_109 = tmpvar_108;
  gl_FragData[0] = tmpvar_109;
}