The RenderMan Interface - Paul Bourke

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##RenderMan Resource-1.0 Must be included as the first line in any Renderer Resource File.] ##Renderer name Requires the name of the renderer along with any revision or date information.] ##Include file Allows the inclusion of a specified file. This keyword should only be used in sections which are modifiable. ##RenderManCapabilitiesAvailable This keyword identifies the section enumerating the Capabilities provided by the renderer. The list of capabilities are found in the Header information section and in Section 1. Each capability implemented by the renderer must appear as one line in this section. No entries in this section should be modified. ##RendererSpecificAttributes This keyword identifies the section which enumerates the Renderer Specific Attributes. These attributes are invoked with the RIB call Attribute. Each attribute implemented by the renderer must appear as one line in this section with legal RIB syntax. The class of all parameter identifiers must be declared previously with a Declare RIB request. If arguments are required for a given attribute, the entry should specify the default value for that attribute. No entries in this section should be modified. ##RendererSpecificOptions This keyword identifies the section which enumerates Renderer Specific Options. These attributes are invoked with the RIB call Option. Each option implemented by the renderer must appear as one line in this section with legal RIB syntax. The class of all parameter identifiers must be declared previously with a Declare RIB request. No entries in this section should be modified. ##ShaderResources This keyword identifies the section which enumerates Shaders available to the renderer. Both built-in and programmed shaders should be listed here. A RenderMan Shading Language declaration for each shader must be provided to enumerate the specific instantiated variables. A declaration may cross line boundaries. This section can be customized to a specific site. ##TextureResources This keyword identifies the section which enumerates the Textures available to the renderer. The name of each texture may be followed on the same line by an optional string which provides a short description of the Texture. If included, the string should be preceded by the ‘#’ character. This section can be customized to a specific site. D.3.2 Renderer Resource File example ##RenderMan Resource-1.0 ##Renderer TrayRacer 1.0 ##RenderManCapabilitiesAvailable Solid Modeling 193
Motion Blur Programmable Shading Displacements Bump Mapping Texture Mapping Ray Tracing Environment Mapping ##RendererSpecificAttributes Declare "refractionindex" "uniform float" Declare "displacement" "uniform float" Attribute "volume" "refractionindex" [1.0] Attribute "bound" "displacement" 3.5 ##RendererSpecificOptions Declare "bucketsize" "uniform integer[2]" Declare "texturememory" "uniform integer" Declare "shader" "string" Declare "texture" "string" Option "limits" "bucketsize" [12 12] Option "limits" "texturememory" 1024 Option "searchpath" "shader" "/usr/local/prman/shaders" Option "searchpath" "texture" "/usr/local/prman/textures" ##ShaderResources surface wood( float ringscale = 10; color lightwood = color(.3, .12, 0.0); darkwood = color(.05, .01, .005); float Ka =.2, Kd =.4, Ks =.6, roughness =.1) displacement dented(float Km = 1.0) light slideprojector ( float fieldofview=PI/32; point from = {8,-4,10), to = {0,0,0), up = point "eye" (0,1,0); string slidename = "" ) ##Include othershaderfile ##TextureResources brick bluebrick grass #kentucky bluegrass-1 square meter moss #spanish moss logo ##Include othertexturefile 194
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The RenderMan Interface Version 3.2
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TABLE OF CONTENTS List of Figures L
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12.1 Surface Shaders . . . . . . .
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Section I DIFFERENCES BETWEEN VERSI
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LIST OF TABLES 4.1 Camera Options .
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PREFACE This document is version 3.
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Section 1 INTRODUCTION The RenderMa
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created using this language. This l
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Depth of Field The ability to simul
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typedef RtPointer typedef RtPointer
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RiContext (ctx1); ... There is no R
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Section 3 RELATIONSHIP TO THE RENDE
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through the interface. Any place wh
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RtContextHandle RiGetContext ( void
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RiWorldBegin (); ... RiColor (...);
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Camera Option Type Default Descript
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ottom top left right Screen Window
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EXAMPLE RiFrameAspectRatio (4.0/3.0
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not support the special projection
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This procedure sets the times at wh
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Output depth values are the camera-
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A particular renderer implementatio
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Renderers may additionally produce
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The number of color components, n,
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RiAttributeBegin () RiAttributeEnd
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RIB BINDING Color c0 c1... cn Color
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An area light source is defined by
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The sequencenumber is the integer l
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4.2.5 Displacement shading The grap
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SEE ALSO RiExterior RiAtmosphere Ri
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Matte onoff EXAMPLE RiMatte (RI TRU
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object foo2 will be drawn when the
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the exterior is the region adjacent
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RiIdentity ( ); SEE ALSO RiTransfor
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RiScale ( RtFloat sx, RtFloat sy, R
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4.3.2 Transformation stack Transfor
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Section 5 GEOMETRIC PRIMITIVES The
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Information Name Type Class Floats
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No checking is done by the RenderMa
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5.2 Patches Patches can be either u
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U V 0 1 2 3 12 13 14 15 4 5 6 7 8 9
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10 x 7 Aperiodic Bezier Bicubic Pat
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SEE ALSO 2 2 [ 0 0 1 1 ] 0 1 ”Pw
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parameterlist is a list of token-ar
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Requests a sphere defined by the fo
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Hyperboloid 0 0 0 .5 0 0 270 ”Cs
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z N z V point2 height U x x y 0 max
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particle. If a primitive variable i
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The code array is a sequence of mac
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is an array of floats that define t
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The helper program generates geomet
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Procedural ”DynamicLoad” [ ”m
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SolidBegin ( ”difference” ); So
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Section 6 MOTION Some rendering pro
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Transformations Geometry Shading Ri
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channels (usually an RGB color) can
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Image Forward Axis Up Axis Right Ax
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ErrorHandler ”ignore” ErrorHand
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Part II The RenderMan Shading Langu
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spaces (such as CMYK or pseudocolor
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transmit reflect transmit P E light
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Section 10 RELATIONSHIP TO THE REND
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Section 11 TYPES The Shading Langua
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Coordinate System ”shader” ”c
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As in C, individual array elements
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Light Source E Vantage Point N L Il
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Surface Element to Illuminate L N I
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Name Type Storage Class Description
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• conditional execution, • loop
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This example integrates over a hemi
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Shader instance variable values can
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} return 2 * (vector noise(p)) - 1;
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These functions compute power and i
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The actual change in a variable is
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Return a unit vector in the directi
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Return surface normal given a point
Page 153 and 154: diffuse returns the diffuse compone
Page 155 and 156: prevent aliasing. If one set of tex
Page 157 and 158: 15.7.3 Shadow depth maps Shadow dep
Page 159 and 160: These functions access the value of
Page 161 and 162: The standard data names supported b
Page 163 and 164: } Oi = sum; Ci = Cs * Oi * (Ka + Kd
Page 165 and 166: path of the ray. The input Ci and O
Page 167 and 168: A.2.3 Metal surface surface metal(
Page 169 and 170: distantlight( float intensity = 1;
Page 171 and 172: A.6 Imager Shaders A.6.1 Background
Page 173 and 174: variable definitions ; variables va
Page 175 and 176: triple sixteentuple arrayindex: [ e
Page 177 and 178: Logical expressions have the value
Page 179 and 180: typedef RtPointer RtContextHandle;
Page 181 and 182: RiOptionV(RtToken name, RtInt n, Rt
Page 183 and 184: RtInt n, RtToken tokens[], RtPointe
Page 185 and 186: #define RIE_NOTATTRIBS ((RtInt)26)
Page 187 and 188: Comments Any occurrence of the ’#
Page 189 and 190: In the following sections the synta
Page 191 and 192: C.2.2 Error handling There are two
Page 193 and 194: adhandle badparamlist badripcode ba
Page 195 and 196: v e r s i o n 212 # version 003 007
Page 197 and 198: Using RIB File structuring conventi
Page 199 and 200: Attribute Format PixelFilter Shadin
Page 201 and 202: ##Include filename This entry allow
Page 203: D.2.1 RIB Entity File example ##Ren
Page 207 and 208: } E.4 Gaussian Filter RtFloat RiGau
Page 209 and 210: Appendix G RENDERMAN INTERFACE QUIC
Page 211 and 212: Function RiOpacity (color) RiOption
Page 213 and 214: Geometric Primitives (continued) Fu
Page 215 and 216: Function abs(x) Math Functions Desc
Page 217 and 218: Function area(P) calculatenormal(P)
Page 219 and 220: Texture Mapping Functions Function
Page 221 and 222: RiInterior 47 RiLightSource 42 RiMa
Page 223 and 224: and uniform variables on an RiNuPat
Page 225 and 226: Statement About Pixar’s Copyright
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The RenderMan Interface - Paul Bourke

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