// This file has been automatically generated from resource file src/Shaders/DeclarationsImpl.glsl

static const char Shaders_DeclarationsImpl_glsl[] =
  "// Created on: 2013-10-10\n"
  "// Created by: Denis BOGOLEPOV\n"
  "// Copyright (c) 2013-2014 OPEN CASCADE SAS\n"
  "//\n"
  "// This file is part of Open CASCADE Technology software library.\n"
  "//\n"
  "// This library is free software; you can redistribute it and/or modify it under\n"
  "// the terms of the GNU Lesser General Public License version 2.1 as published\n"
  "// by the Free Software Foundation, with special exception defined in the file\n"
  "// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT\n"
  "// distribution for complete text of the license and disclaimer of any warranty.\n"
  "//\n"
  "// Alternatively, this file may be used under the terms of Open CASCADE\n"
  "// commercial license or contractual agreement.\n"
  "\n"
  "// This file includes implementation of common functions and properties accessors\n"
  "\n"
  "#if defined(FRAGMENT_SHADER)\n"
  "//! Output color (and coverage for accumulation by OIT algorithm).\n"
  "void occSetFragColor (in vec4 theColor)\n"
  "{\n"
  "#if defined(OCC_ALPHA_TEST)\n"
  "  if (theColor.a < occAlphaCutoff) discard;\n"
  "#endif\n"
  "#if defined(OCC_WRITE_WEIGHT_OIT_COVERAGE)\n"
  "  float aWeight     = theColor.a * clamp (1e+2 * pow (1.0 - gl_FragCoord.z * occOitDepthFactor, 3.0), 1e-2, 1e+2);\n"
  "  occFragCoverage.r = theColor.a * aWeight;\n"
  "  occFragColor      = vec4 (theColor.rgb * theColor.a * aWeight, theColor.a);\n"
  "#else\n"
  "  occFragColor = theColor;\n"
  "#endif\n"
  "}\n"
  "#endif\n"
  "\n"
  "#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)\n"
  "// arrays of light sources\n"
  "uniform THE_PREC_ENUM ivec2 occLightSourcesTypes[THE_MAX_LIGHTS]; //!< packed light sources types\n"
  "uniform               vec4  occLightSources[THE_MAX_LIGHTS * 4];  //!< packed light sources parameters\n"
  "\n"
  "// light source properties accessors\n"
  "int   occLight_Type              (in int theId) { return occLightSourcesTypes[theId].x; }\n"
  "int   occLight_IsHeadlight       (in int theId) { return occLightSourcesTypes[theId].y; }\n"
  "vec4  occLight_Diffuse           (in int theId) { return occLightSources[theId * 4 + 0]; }\n"
  "vec4  occLight_Specular          (in int theId) { return occLightSources[theId * 4 + 0]; }\n"
  "vec4  occLight_Position          (in int theId) { return occLightSources[theId * 4 + 1]; }\n"
  "vec4  occLight_SpotDirection     (in int theId) { return occLightSources[theId * 4 + 2]; }\n"
  "float occLight_ConstAttenuation  (in int theId) { return occLightSources[theId * 4 + 3].x; }\n"
  "float occLight_LinearAttenuation (in int theId) { return occLightSources[theId * 4 + 3].y; }\n"
  "float occLight_SpotCutOff        (in int theId) { return occLightSources[theId * 4 + 3].z; }\n"
  "float occLight_SpotExponent      (in int theId) { return occLightSources[theId * 4 + 3].w; }\n"
  "#endif\n"
  "\n"
  "// material state\n"
  "uniform vec4 occFrontMaterial[5];\n"
  "uniform vec4 occBackMaterial[5];\n"
  "\n"
  "// front material properties accessors\n"
  "vec4  occFrontMaterial_Ambient(void)      { return occFrontMaterial[0]; }\n"
  "vec4  occFrontMaterial_Diffuse(void)      { return occFrontMaterial[1]; }\n"
  "vec4  occFrontMaterial_Specular(void)     { return occFrontMaterial[2]; }\n"
  "vec4  occFrontMaterial_Emission(void)     { return occFrontMaterial[3]; }\n"
  "float occFrontMaterial_Shininess(void)    { return occFrontMaterial[4].x; }\n"
  "float occFrontMaterial_Transparency(void) { return occFrontMaterial[4].y; }\n"
  "\n"
  "// back material properties accessors\n"
  "vec4  occBackMaterial_Ambient(void)       { return occBackMaterial[0]; }\n"
  "vec4  occBackMaterial_Diffuse(void)       { return occBackMaterial[1]; }\n"
  "vec4  occBackMaterial_Specular(void)      { return occBackMaterial[2]; }\n"
  "vec4  occBackMaterial_Emission(void)      { return occBackMaterial[3]; }\n"
  "float occBackMaterial_Shininess(void)     { return occBackMaterial[4].x; }\n"
  "float occBackMaterial_Transparency(void)  { return occBackMaterial[4].y; }\n"
  "\n"
  "// 2D texture coordinates transformation\n"
  "vec2  occTextureTrsf_Translation(void) { return occTexTrsf2d[0].xy; }\n"
  "vec2  occTextureTrsf_Scale(void)       { return occTexTrsf2d[0].zw; }\n"
  "float occTextureTrsf_RotationSin(void) { return occTexTrsf2d[1].x; }\n"
  "float occTextureTrsf_RotationCos(void) { return occTexTrsf2d[1].y; }\n";