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how to use 3delight's maya_phong() function with prman?
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yao yansi
Apr 30, 2012
Post id: 309971 Report Item

Hi all,
I write a surface shader which uses 3delight(10.0.4)'s maya_phong() function. Then I compile the shader and render my rib file with prman13.5. But the output image seems wrong. I'm not sure where is the problem, may be the incorrect use of maya_phong().
Here is my shader and rib file.

My surface shader phong1.sl:











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  vector specularColor = vector (0,0,0);

  float reflectivity = float 6e-005;

  vector reflectedColor = vector (0.16528,0.16528,0.16528);

 uniform float refractions = float 0;

  float refractiveIndex = float 1;

 uniform float refractionLimit = float 6;

  float lightAbsorbance = float 0;

  float shadowAttenuation = float 0.5;

 uniform float reflectionLimit = float 1;

  float translucence = float 0;

  float translucenceDepth = float 0;

  float translucenceFocus = float 8e-005;

  vector transparency = vector (0.42148,0.42148,0.42148);

 uniform float i_reflectionMaxDistance   =4;

 uniform float i_reflectionSamples       =4;

 uniform float i_reflectionBlur          =4;

 uniform float i_reflectionNoiseAmplitude=4;

 uniform float i_reflectionNoiseFrequency=4;

  vector outColor = vector (0,0,0);

  vector outTransparency = vector (0.42148,0.42148,0.42148);

 {

   color _outColor;

   color _outTransparency;

   maya_phong(color ambientColor,        

    color i_color,                

    cosinePower,                

    diffuse,                    

    color incandescence,        

    matteOpacity,                

    matteOpacityMode,            

    normal normalCamera,        

    color specularColor,        

    reflectivity,                

    color reflectedColor,        

    refractions,                

    refractiveIndex,            

    refractionLimit,            

    lightAbsorbance,            

    shadowAttenuation,            

    reflectionLimit,            

    translucence,                

    translucenceDepth,            

    translucenceFocus,            

    color transparency,        

    i_reflectionMaxDistance,    

    i_reflectionSamples,        

    i_reflectionBlur,            

    i_reflectionNoiseAmplitude,

    i_reflectionNoiseFrequency,

    _outColor,                    

    _outTransparency            

   );

    Ci             = _outColor;

    Oi             = _outTransparency;

   outColor        = vector Ci;

   outTransparency = vector Oi;

 }

}

 

// call the shaders ------------------

 phong1();

}



 


compile the shader with prman shader.exe











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\>shader.exe -o "E:/MyDocuments/maya/projects/default/generatedShader/phong1.slo" -I"%LIQUID_ROOT%/dependence/_3delight" "E:/MyDocuments/maya/projects/default/generatedShader/phong1.sl"



 


My rib file er_rm_shader_graph_phong3_perspShape.0001-3delight.rib:
(Note that I also use 3delight maya_pointlight shader for the point light.)











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##RenderMan RIB-Structure 1.0

version 3.03

#    Generated by Liquid v2.3.5 (buildtime=11:33:32.87)

#    Scene : E:/MyDocuments/maya/projects/default/er_rm_shader_graph_phong3

#    User  : yaoyansi

#    Time  : Sun Apr 29 18:53:48 2012

 

Option "limits" "bucketsize" [ 256 256 ] 

Option "limits" "gridsize" [ 256 ] 

Option "limits" "texturememory" [ 65536 ] 

Option "limits" "eyesplits" [ 10 ] 

Option "limits" "othreshold" [ 0.996000 0.996000 0.996000 ] 

Option "limits" "zthreshold" [ 0.996000 0.996000 0.996000 ] 

Option "searchpath" "shader" [ "&:@:.:~:rmanshader://E/dev/autodesk/maya/myplugin/project/liquid_/2.3.3/lib/shaders:E:/MyDocuments/maya/projects/default/" ] 

Option "searchpath" "texture" [ "&:@:.:~://E/dev/autodesk/maya/myplugin/project/liquid_/2.3.3/lib/textures:E:/MyDocuments/maya/projects/default/://E/mydocuments/maya/projects/default/rmantex/" ] 

Option "searchpath" "archive" [ "&:@:.:~://E/dev/autodesk/maya/myplugin/project/liquid_/2.3.3/lib/rib:E:/MyDocuments/maya/projects/default/://E/mydocuments/maya/projects/default/rib/" ] 

Option "searchpath" "procedural" [ "&:@:.:~://E/dev/autodesk/maya/myplugin/project/liquid_/2.3.3/lib/plugins:E:/MyDocuments/maya/projects/default/" ] 

Option "searchpath" "display" [".:@:D:\Program Files\Pixar\RenderManProServer-13.5.2/etc:E:/dev/autodesk/maya/myplugin/project/liquid_/2.3.3/displayDrivers/PRMan/"]

Hider "hidden" "int jitter" [0] 

PixelSamples 4.000000 4.000000

ShadingRate 1.000000

PixelFilter "box" 2.000000 2.000000

Option "user" "string pass" [ "beauty" ] 

#Ray Tracing : OFF

Option "trace" "int maxdepth" [ 0 ] 

FrameBegin 1

    ShadingInterpolation "smooth"

    Quantize "rgba" 0 0 0 0.000000

    #Display Drivers:

    #Render To Maya renderView :

Display "E:/MyDocuments/maya/projects/default/rmanpix/er_rm_shader_graph_phong3_perspShape_1_renderman.bmp" "it" "rgba" "int merge" [0] "int mayaDisplayPort" [6667] "string host" ["localhost"]

    Format 768 576 1.000000

    Projection "perspective" "fov" [ 42.184677 ] 

    ScreenWindow -1.333333 1.333333 -1.000000 1.000000

    Clipping 0.100000 1000.000000

    Shutter 1.000000 1.000000

    Transform [ 0.998240 -0.055041 -0.022084 0.000000 0.000000 0.372367 -0.928086 0.000000 -0.059306 -0.926452 -0.371711 0.000000 -5.636015 11.409916 98.953972 1.000000 ]

    WorldBegin

        TransformBegin

            CoordinateSystem "worldspace"

        TransformEnd

        TransformBegin

            Rotate -90.000000 1.000000 0.000000 0.000000

            CoordinateSystem "_environment"

        TransformEnd

        ReverseOrientation

        AttributeBegin

            Attribute "identifier" "name" [ "_pointLight1_pointLightShape1" ] 

            ConcatTransform [ 1.000000 0.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 -0.000000 -0.000000 -1.000000 0.000000 13.137122 15.475898 13.821261 1.000000 ]

            LightSource "E:/dev/render/renderer/renderman.compliant/3delight/10.0.4/shaders/src/maya_pointlight" 1 

        "intensity" [ 1.000000 ] 

        "lightcolor" [ 1.000000 1.000000 1.000000 ]

        "color shadowcolor" [ 0.000000 0.000000 0.000000 ] 

        "float decay" [ 0.000000 ] 

        "string shadowmapname" [ "" ]

        "float shadowBias" [ 0.010000 ] 

        "float shadowBlur" [ 0.000000 ] 

        "float shadowSamples" [ 16.000000 ]

        "float shadowFilterSize" [ 1.000000 ] 

        "float __nondiffuse" [ 0.000000 ] 

        "float __nonspecular" [ 0.000000 ] 

        "string __category" [ "" ] 

        AttributeEnd

        Illuminate 1 0

        AttributeBegin

            Attribute "identifier" "name" [ "_pPlane1_pPlaneShape1" ] 

            Illuminate 1 1

            GeometricApproximation "motionfactor" 1.000000

            Color [ 0.000000 0.500000 0.029750 ]

            Opacity [ 0.578520 0.578520 0.578520 ]

            #shading group: phong1SG

            Surface "E:/MyDocuments/maya/projects/default/generatedShader/phong1" 

            #no volume shader.

            #no displacement shader.

            Transform [ 1.000000 0.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 0.000000 1.000000 0.000000 -0.642661 -10.365156 8.772568 1.000000 ]

            PointsGeneralPolygons [ 1 ] [ 4 ] [ 2 3 1 0 ] "P" [ -18.502369 -0.000000 16.700991 18.502369 -0.000000 16.700991 -18.502369 0.000000 -16.700991 18.502369 0.000000 -16.700991 ] "vertex normal N" [ 0.000000 1.000000 0.000000 0.000000 1.000000 0.000000 0.000000 1.000000 0.000000 0.000000 1.000000 0.000000 ] "facevarying float[2] st" [ 0.000000 0.001809 0.997722 0.001222 1.000000 1.000000 0.000000 1.000000 ] 

        AttributeEnd

    WorldEnd

FrameEnd



 


Render this rib file:











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\>prman er_rm_shader_graph_phong3_perspShape.0001-3delight.rib



 


The output image seems not correct.Here is the output image:
output image


My Question is:
1. I guss that my usage of maya_phong() is wrong, but I'm not sure where the problem is. Could you give me any help?
2. Can 3delight shader header files(e.g. phong.h) be used with prman?

Thank you in advance.




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