Examples/CSM/Shader/Simple/scene.osg

   1 #OSG V1.0
   2
   3 Node
   4 {
   5   core MaterialGroup
   6   {
   7     material ChunkMaterial
   8     {
   9       chunks
  10       [
  11         SimpleSHLChunk
  12         {
  13           variables ShaderProgramVariables
  14           {
  15             variables
  16             [
  17               ShaderVariableReal
  18               {
  19                 name "ColR"
  20                 value 1.0
  21               }
  22               ShaderVariableReal
  23               {
  24                 name "ColG"
  25                 value 0.6
  26               }
  27               ShaderVariableReal
  28               {
  29                 name "ColB"
  30                 value 0.6
  31               }
  32               ShaderVariableReal
  33               {
  34                 name "ColB"
  35                 value 0.0
  36               }
  37             ]
  38           }
  39
  40           vertexShader
  41           [
  42             ShaderProgram
  43             {
  44               shaderType GL_VERTEX_SHADER
  45
  46               program "
  47
  48                 varying float Diffuse;
  49
  50                 void main(void)
  51                 {
  52                   // calculate vertex position in eye coordinates
  53                   vec4 ecPosition = -normalize(gl_ModelViewMatrix * gl_Vertex);
  54
  55                   // compute the transformed normal
  56                   vec3 tnorm      = normalize(gl_NormalMatrix * gl_Normal);
  57
  58                   // Calculate a diffuse light intensity
  59                   Diffuse             = dot(ecPosition.xyz,
  60                                             tnorm     );
  61
  62                   // output final vertex information
  63                   gl_Position     = gl_ModelViewProjectionMatrix * gl_Vertex;
  64                 }
  65               "
  66             }
  67           ]
  68
  69           fragmentShader
  70           [
  71             ShaderProgram
  72             {
  73               shaderType GL_FRAGMENT_SHADER
  74
  75               program "
  76                 varying float Diffuse;
  77                 uniform float ColR;
  78                 uniform float ColG;
  79                 uniform float ColB;
  80
  81                 void main (void)
  82                 {
  83                   gl_FragColor = vec4(ColR * Diffuse,
  84                                       ColG * Diffuse,
  85                                       ColB * Diffuse,
  86                                       1.);
  87                 }
  88               "
  89             }
  90           ]
  91         }
  92       ]
  93     }
  94   }
  95
  96   children
  97   [
  98     Node
  99     {
 100       core Inline
 101       {
 102         url "../../SimpleTeapot/object.wrl"
 103       }
 104     }
 105   ]
 106 }