SHADER(1) PhotoRealistic RenderMan (NEXTSTEP) SHADER(1)NAMEshader - compile shading language source into run-time shaders
SYNOPSIS
/usr/prman/shader [ -Iincdir ] [ -o outputfile ] [ -s srcfilename ]
[ -v ] [ -q ] [ -Uname ] [ -Dname ] [ -Dname=def ] files ...
DESCRIPTIONshader translates shading language source statements into modules
suitable for execution in the RenderMan run-time environment. If the
files specification is missing, shader looks for input on stdin.
Unless overridden with the -q option, the compiler prints the name of
each shader module as it is compiled.
OPTIONS
The following options are supported by shader.
-Iincdir
This option is actually passed to and interpreted by cpp, the C
pre-processor. It specifies the directory in which to search
for #include files. Several such options may be given to shader
and directories are searched in the order specified. The
default directory, /usr/prman/lib/shaders will be searched last.
-U name
This option is passed to and interpreted by cpp. It removes any
initial definition of name, where name is a reserved symbol that
is predefined by the particular version of cpp(1). See cpp(1)
for the implementation-dependent list of these possibly reserved
symbols.
-D name
This option is passed to and interpreted by cpp. It defines
name as 1 (one). This is the same as if a -Dname=1 option
appeared on the shader command line, or as if a #define name
1 line appeared in the source file that shader is processing.
-D name=def
This option is passed to and interpreted by cpp. It defines
name as if by a #define directive. This is the same as if a
#define name def line appeared in the source file that shader
is processing. The -D option has lower precedence than the -U
option. That is, if the same name is used in both a -U option
and a -D option, the name will be undefined regardless of the
order of the options.
-o outputfile
By default, shader places its output in a file named
"shader_name.slo" where shader_name is the name of the shader as
specified in the shader definition statement in the source file.
Note that this is not necessarily the same as the source file
name. The -o option allows the user to override this default
naming convention. It should be used with care since the run-
time system looks for shader executables according to the
default naming convention. The outputfile specification may be
either a file name, in which case output is written to the
specified file, or one of the following special names:
- Write the output to stdout
-src Derive an output filename from the source filename by
removing any directory prefix and a .sl suffix and
appending a .slo suffix.
-shader Derive the output filename from the name of the shader
and the .slo suffix. This is the default.
-s srcfilename
This allows specification of the original source file name in
those cases where it may be difficult or impossible to infer it
otherwise (e.g., when the source file is being cated to stdin).
-v The verbose option produces more output from the compiler.
-q The quiet option suppresses the normal printing of the shader
module names as they are compiled.
FILES
/lib/cpp pre-processor
/NextLibrary/Shaders default include directory
/usr/prman/shader shell front end
/usr/prman/lib/shadecom compiler executable
Release 3.0 August 14, 1991 SHADER(1)
