Rendering学習日記

全体を大きな球体に入れ、青で囲んでいます。
青玉は、ブラーがかかっています。

#sphere32.pyg

Output ("sphere32.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("float shadingquality",2)

Attribute ("string projection", "perspective")

Attribute ("float fov", 13)

Attribute ("int[2] resolution", (640, 480))

#placecam -20 15 0 0 0 0

Rotate (-36.87, 1.00, 0.00, 0.00)

Rotate (-90.00, 0.00, 1.00, 0.00)

Translate (20.00, -15.00, 0.00)



Attribute ("string geometryset", "+shadows")

Attribute ("string geometryset", "+reflection")



World ()

PushTransform ()

Attribute ("color C", (0.2, 0.4, 0.75))

Sphere (100, -100, 100, 360)

PopTransform ()



Light ("light1", "spotlight", "string shadowname", "shadows", "point from", (-20, 50, -20), "point to", 

(0, 0, 0), "float intensity", 6000, "float coneangle", 90,"float shadowblur",0.01,"float shadowsamples", 4,"float shadowbias",0.1)





PushTransform ()

Attribute ("color C", (1, 1, 0.25))  #yellow

Shader ("surface", "metal", "string envname", "reflection",

        "float Kd", 0.05, "float roughness", 0.1, "float Kr", 0.75,

        "float Ka", 0.5,

#        "float samples", 4, "float blur", 0.05,

        "float twosided", 1

        )

Translate ( 0, 1, 0)

Sphere (1, -1, 1, 360)

PopTransform ()



PushTransform ()

Attribute ("color C", (0.25, 0.25, 1))  #blue

Shader ("surface", "metal", "string envname", "reflection",

        "float Kd", 0.05, "float roughness", 0.1, "float Kr", 0.75,

        "float Ka", 0.5,

        "float samples", 4, "float blur", 0.1,

        "float twosided", 1

        )

Translate ( 0, 1, 2.5)

Sphere (1, -1, 1, 360)

PopTransform ()







PushTransform ()

Attribute ("color C", (1, 0.25, 0.25))  #red

Shader ("surface", "metal", "string envname", "reflection",

        "float Kd", 0.05, "float roughness", 0.1, "float Kr", 0.75,

        "float Ka", 0.5,

#       "float samples", 4, "float blur", 0.1,

        "float twosided", 1

        )

Translate ( 0, 1, -2.5)

Sphere (1, -1, 1, 360)

PopTransform ()



Attribute ("color C", (1, 1, 1))

Shader ("surface", "plastic")

Rotate (90.00, 1.00, 0.00, 0.00)

Input("PlaneGeom.rib")

Render()

まず、AO(ambient-occlusion)を求める。

#sphere32ao.pyg



Attribute ("int ray:maxdepth", 1)



Output ("sphere32ao.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("float shadingquality",2)

Attribute ("string projection", "perspective")

Attribute ("float fov", 13)

Attribute ("int[2] resolution", (640, 480))

#placecam -20 15 0 0 0 0

Rotate (-36.87, 1.00, 0.00, 0.00)

Rotate (-90.00, 0.00, 1.00, 0.00)

Translate (20.00, -15.00, 0.00)



Attribute ("string occlusion:spatialdb", "occ.sdb");

Attribute ("string spatialdb:write", "occ.sdb");



World ()

Shader ("surface", "ambocclude", "string occlusionname", "localocclusion", "float samples", 256, "float bias", 0.01)



Attribute ("string geometryset", "+localocclusion")

Attribute ("float occlusion:maxpixeldist", 20)

Attribute ("float occlusion:maxerror", 0.25)



PushTransform ()

Attribute ("color C", (1, 1, 0.25))  #yellow

Translate ( 0, 1, 0)

Sphere (1, -1, 1, 360)

PopTransform ()



PushTransform ()

Attribute ("color C", (0.25, 0.25, 1))  #blue

Translate ( 0, 1, 2.5)

Sphere (1, -1, 1, 360)

PopTransform ()



PushTransform ()

Attribute ("color C", (1, 0.25, 0.25))  #red

Translate ( 0, 1, -2.5)

Sphere (1, -1, 1, 360)

PopTransform ()



Attribute ("color C", (1, 1, 1))

Rotate (90.00, 1.00, 0.00, 0.00)

Input("PlaneGeom.rib")

Render()

つづいて、Photoshopでレイヤーに入れて乗算処理する。

Shaderをレイヤーで合わせることができるから、ちょっと面白いかも。
とりあえず、繰り返し処理はfor文を使う。

#box_check.pyg

Output ("box_check.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("float shadingquality",1.2)

Attribute ("string projection", "perspective")

Attribute ("float fov", 20)

Attribute ("int[2] resolution", (640, 480))

#placecam 10 5 -10 0 0 0

Rotate (-19.47, 1.00, 0.00, 0.00)

Rotate (45.00, 0.00, 1.00, 0.00)

Translate (-10.00, -5.00, 10.00)



#Attribute ( "int ray:shadows", 0 )

Attribute ("string geometryset", "+shadows")

Attribute ("string geometryset", "+reflection")



World ()

Light ("light1", "pointlight", "float intensity", 400, "point from", (-10, 10, -10),"string shadowname", "shadows")

Light ("light2", "pointlight", "float intensity", 400, "point from", (10, 10, -10),"string shadowname", "shadows")



PushTransform ()

Attribute ("color C", (0.2, 0.4, 0.75))

Sphere (100, -100, 100, 360)

PopTransform ()



for i in range(5):

    PushTransform ()

    Attribute ("color C", (1, 1, 1))

    Shader ( "surface", "metal","string envname","reflection" )

    #Shader ("surface", "plastic")

    i=1.2*i

    Translate ( 0, 0.5, i-2)

    Input ("BoxGeom.rib")

    PopTransform ()





Attribute ("color C", (1, 1, 1))

Rotate (90.00, 1.00, 0.00, 0.00)

ShaderGroupBegin ()

Shader ("surface", "checker","layer1","float stilesize", .1, "float ttilesize", .1)

Shader ("surface", "plastic", "layer2")

ConnectShaders ("layer1", "Cout", "layer2", "C")

ShaderGroupEnd ()

Input("PlaneGeom.rib")

Render()