The RenderMan Interface - Paul Bourke

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Name arraytoobig badargument badarray badbasis badcolor badhandle badparamlist badripcode badstringtoken badtoken badversion limitcheck outofmemory protocolbotch stringtoobig syntaxerror unregistered Description insufficient memory to construct array incorrect parameter value invalid array specification undefined basis matrix name invalid color specification invalid light or object handle parameter list type mismatch invalid encoded RIB request code undefined encoded string token invalid binary token protocol version number mismatch overflowing an internal limit generic instance of insufficient memory malformed binary encoding insufficient memory to read string general syntactic error undefined RIB request Table C.2: RIB Errors badargument badarray The RIB interpreter encountered an invalid parameter value in parsing a request. EXAMPLE Polygon ”N” [...] # no ”P” specified PointsGeneralPolygons [2 2] [4 3 4]... # bad nloops The number of items in an array is inappropriate for the specified parameter, or an array has both string and number elements. EXAMPLE Basis [0 1 2 3] Cone [1.5] Bound [0 1 0 ”oops” ] badbasis badcolor The basis matrix name specified in a basis request is not known by the RIB interpreter. EXAMPLE Basis ”my-favorite-basis” An invalid color was supplied as a parameter to a request. That is, an array was specified with an incorrect number of elements. EXAMPLE Opacity [.5 1] # with 3-channel colors 181
adhandle badparamlist badripcode badstringtoken badtoken badversion limitcheck An invalid light or object handle was supplied as a parameter to an Illuminate, ObjectInstance, LightSource, AreaLightSource, or ObjectBegin request. For Illuminate, the light handle must be an integer value specified in a previous LightSource or AreaLightSource request. For ObjectInstance, the object handle must be an integer value specified in a previous ObjectBegin request. For LightSource, AreaLightSource, and ObjectBegin this error is raised if the number specified for a light handle is significantly larger than any previous handle; for example, specifying 3000 when the largest previous handle was 10 (this is used as a “sanity check” to guard against corrupted input data). EXAMPLE LightSource ”finite” 1 Illuminate 99999 In a token-value pair of a parameter list, the type of a value did not agree with the declared type of the token. EXAMPLE Declare ”gridsize” ”uniform float[2]” Option ”limits” ”gridsize” ”not a number” A binary encoded token that specified a RIB request used an undefined request code. Request codes must be defined, prior to their use, with the binary encoding protocol; see the section on Binary Encoding. A binary encoded string token referenced a string that had not previously been defined. The binary encoding scheme is described in Binary encoding. A byte with the most significant bit set was not recognized as a valid binary encoding. The binary encoding scheme is described in Binary encoding. EXAMPLE \300 The RIB protocol version number specified in a version request was greater than the protocol version number of the interpreter. SEE ALSO version An internal limit was encountered during normal operation of the interpreter. Implementers of RIB interpreters are expected to avoid imposing arbitrary limits. Some implementations may, however, need to limit the maximum size of strings, arrays, etc. due to memory constraints. 182
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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
Page 141 and 142: Shader instance variable values can
Page 143 and 144: } return 2 * (vector noise(p)) - 1;
Page 145 and 146: These functions compute power and i
Page 147 and 148: The actual change in a variable is
Page 149 and 150: Return a unit vector in the directi
Page 151 and 152: 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: C.2.2 Error handling There are two
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 and 204: D.2.1 RIB Entity File example ##Ren
Page 205 and 206: Motion Blur Programmable Shading Di
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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