glsl_mandelbrot.osgt

#Ascii Scene 
#Version 78 
#Generator OpenSceneGraph 2.9.17 

osg::Geode {
  UniqueID 1 
  Name "glsl_mandelbrot.osg" 
  DataVariance DYNAMIC 
  StateSet TRUE {
    osg::StateSet {
      UniqueID 2 
      DataVariance STATIC 
      AttributeList 1 {
        osg::Program {
          UniqueID 3 
          DataVariance STATIC 
          Shaders 2 {
            osg::Shader {
              UniqueID 4 
              DataVariance DYNAMIC 
              Type VERTEX 
              ShaderSource 35 {
                "//
" 
                "// Vertex shader for drawing the Mandelbrot set
" 
                "//
" 
                "// Authors: Dave Baldwin, Steve Koren, Randi Rost
" 
                "//          based on a shader by Michael Rivero
" 
                "//
" 
                "// Copyright (c) 2002-2004: 3Dlabs, Inc.
" 
                "//
" 
                "// See 3Dlabs-License.txt for license information
" 
                "//
" 
                "
" 
                "uniform vec3 LightPosition;
" 
                "uniform float SpecularContribution;
" 
                "uniform float DiffuseContribution;
" 
                "uniform float Shininess;
" 
                "
" 
                "varying float LightIntensity;
" 
                "varying vec3  Position;
" 
                "
" 
                "void main(void)
" 
                "{
" 
                "    vec3 ecPosition = vec3 (gl_ModelViewMatrix * gl_Vertex);
" 
                "    vec3 tnorm      = normalize(gl_NormalMatrix * gl_Normal);
" 
                "    vec3 lightVec   = normalize(LightPosition - ecPosition);
" 
                "    vec3 reflectVec = reflect(-lightVec, tnorm);
" 
                "    vec3 viewVec    = normalize(-ecPosition);
" 
                "    float spec      = max(dot(reflectVec, viewVec), 0.0);
" 
                "    spec            = pow(spec, Shininess);
" 
                "    LightIntensity  = DiffuseContribution * 
" 
                "                          max(dot(lightVec, tnorm), 0.0) +
" 
                "                          SpecularContribution * spec;
" 
                "    Position        = vec3(gl_MultiTexCoord0 - 0.5) * 5.0;
" 
                "    gl_Position     = ftransform();
" 
                "
" 
                "}" 
              }
            }
            osg::Shader {
              UniqueID 5 
              DataVariance DYNAMIC 
              Type FRAGMENT 
              ShaderSource 54 {
                "//
" 
                "// Fragment shader for drawing the Mandelbrot set
" 
                "//
" 
                "// Authors: Dave Baldwin, Steve Koren, Randi Rost
" 
                "//          based on a shader by Michael Rivero
" 
                "//
" 
                "// Copyright (c) 2002-2004: 3Dlabs, Inc.
" 
                "//
" 
                "// See 3Dlabs-License.txt for license information
" 
                "//
" 
                "
" 
                "varying vec3  Position;
" 
                "varying float LightIntensity;
" 
                "
" 
                "uniform float MaxIterations;
" 
                "uniform float Zoom;
" 
                "uniform float Xcenter;
" 
                "uniform float Ycenter;
" 
                "uniform vec3  InnerColor;
" 
                "uniform vec3  OuterColor1;
" 
                "uniform vec3  OuterColor2;
" 
                "
" 
                "void main(void)
" 
                "{
" 
                "    float   real  = Position.x * Zoom + Xcenter;
" 
                "    float   imag  = Position.y * Zoom + Ycenter;
" 
                "    float   Creal = real;   // Change this line...
" 
                "    float   Cimag = imag;   // ...and this one to get a Julia set
" 
                "
" 
                "    float r2 = 0.0;
" 
                "    float iter;
" 
                "
" 
                "    for (iter = 0.0; iter < MaxIterations && r2 < 4.0; ++iter)
" 
                "    {
" 
                "        float tempreal = real;
" 
                "
" 
                "        real = (tempreal * tempreal) - (imag * imag) + Creal;
" 
                "        imag = 2.0 * tempreal * imag + Cimag;
" 
                "        r2   = (real * real) + (imag * imag);
" 
                "    }
" 
                "
" 
                "    // Base the color on the number of iterations
" 
                "
" 
                "    vec3 color;
" 
                "
" 
                "    if (r2 < 4.0)
" 
                "        color = InnerColor;
" 
                "    else
" 
                "        color = mix(OuterColor1, OuterColor2, fract(iter * 0.05));
" 
                "
" 
                "    color *= LightIntensity;
" 
                "
" 
                "    gl_FragColor = vec4 (color, 1.0);
" 
                "}" 
              }
            }
          }
          GeometryVerticesOut GL_GEOMETRY_VERTICES_OUT_EXT 1 
          GeometryInputType GL_GEOMETRY_INPUT_TYPE_EXT 4 
          GeometryOutputType GL_GEOMETRY_OUTPUT_TYPE_EXT 5 
        }
        Value OFF 
      }
      UniformList 11 {
        osg::Uniform {
          UniqueID 6 
          Name "DiffuseContribution" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 1 FloatArray 1 {
            0.8 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 7 
          Name "InnerColor" 
          DataVariance DYNAMIC 
          Type FLOAT_VEC3 
          NumElements 1 
          Elements TRUE ArrayID 2 FloatArray 3 {
            0 0 0 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 8 
          Name "LightPosition" 
          DataVariance DYNAMIC 
          Type FLOAT_VEC3 
          NumElements 1 
          Elements TRUE ArrayID 3 FloatArray 3 {
            0 0 1 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 9 
          Name "MaxIterations" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 4 FloatArray 1 {
            100 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 10 
          Name "OuterColor1" 
          DataVariance DYNAMIC 
          Type FLOAT_VEC3 
          NumElements 1 
          Elements TRUE ArrayID 5 FloatArray 3 {
            1 1 0 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 11 
          Name "OuterColor2" 
          DataVariance DYNAMIC 
          Type FLOAT_VEC3 
          NumElements 1 
          Elements TRUE ArrayID 6 FloatArray 3 {
            0 0 1 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 12 
          Name "Shininess" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 7 FloatArray 1 {
            0.3 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 13 
          Name "SpecularContribution" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 8 FloatArray 1 {
            0.2 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 14 
          Name "Xcenter" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 9 FloatArray 1 {
            -0.5 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 15 
          Name "Ycenter" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 10 FloatArray 1 {
            0 
          }
        }
        Value OFF 
        osg::Uniform {
          UniqueID 16 
          Name "Zoom" 
          DataVariance DYNAMIC 
          Type FLOAT 
          NumElements 1 
          Elements TRUE ArrayID 11 FloatArray 1 {
            0.6 
          }
        }
        Value OFF 
      }
    }
  }
  Drawables 1 {
    osg::Geometry {
      UniqueID 17 
      DataVariance DYNAMIC 
      PrimitiveSetList 1 {
        DrawArrays GL_QUADS 0 4 
        
      }
      VertexData {
        Array TRUE ArrayID 12 Vec3fArray 4 {
          0 0 1 
          0 0 0 
          1 0 0 
          1 0 1 
        }
        Indices FALSE 
        Binding BIND_PER_VERTEX 
        Normalize 0 
      }
      NormalData {
        Array TRUE ArrayID 13 Vec3fArray 1 {
          0 -1 0 
        }
        Indices FALSE 
        Binding BIND_OVERALL 
        Normalize 0 
      }
      ColorData {
        Array TRUE ArrayID 14 Vec4fArray 1 {
          1 1 1 1 
        }
        Indices FALSE 
        Binding BIND_OVERALL 
        Normalize 0 
      }
      TexCoordData 1 {
        Data {
          Array TRUE ArrayID 15 Vec2fArray 4 {
            0 1 
            0 0 
            1 0 
            1 1 
          }
          Indices FALSE 
          Binding BIND_PER_VERTEX 
          Normalize 0 
        }
      }
    }
  }
}