home *** CD-ROM | disk | FTP | other *** search
-
- DKBTrace 2.12
-
-
-
-
- This ray tracer was written by David K. Buck and is released as freely
- distributable software. The author retains all copyrights but permits
- free distribution of the software through any medium. The software may
- be used without charge so long as the code is not included in any
- commercial product.
-
-
- The Amiga executable archive contains two versions of the raytracer:
-
- dkbieee - Non co-processor version of the raytracer.
- This version will run on any Amiga with sufficient
- memory. If a 68881 chip is present, it will be used
- although it will be slower than trace881. You must
- have mathieeedoubbas.library in your :lib directory.
-
-
- dkb881 - Math coprocessor version. This version will only
- run on 68020 or 68030 based systems that have a
- 68881 or 68882 math coprocessor.
-
-
- I usually like having a fairly large stack for this program. If it
- crashes on you, try inceasing the stack size.
-
-
- The IBM/MS-DOS executable archive also contains two versions:
-
- dkbno87.exe - Emulated Floating Point version of the raytracer.
- This version will run on any IBM P.C. or Compatible
- machine, as it is compiled for 8088 opcodes.
-
- dkb.exe - Math coprocessor and 80186 or better ('286, '386, etc.)
- optimized version of the raytracer. Requires a 80x87 NPE.
-
- These files were compiled using Microsoft C 6.00A with maximum optimization
- options, where possible. There are makefile's (.mak) and link files (.lnk)
- provided for both MSC 6.00A and for Turbo-C 2.0, for compatibility with
- prior versions. Note, however, that the Turbo-C version is no longer
- formally supported, and the make and link files are include for historical
- reasons only (it may take some work to make DKB compatible with Turbo-C
- now, as I no longer use it).
-
- This version has been fed through four different compilers at their
- maximum warning levels, and then through a VERY picky "LINT", so it should
- be edible by very nearly all decent "C" compilers. Also, all memory
- allocation functions are checked carefully for memory size limitations.
-
- The stack size in this version is set to about 12K which should be enough
- to do tracing of scenes with about 550K free RAM. If it dies while it's
- tracing chances are you may need to increase the stack size a bit. I have
- the internal stack checking option off for additional speed when tracing.
- Currently the stack size is set at 3000H, but more can be easily allocated
- with the Microsoft EXEMOD or EXEHDR utilities. I would suggest trying 3800
- or 4000H, but not too much more. The more stack you have will mean less
- memory will be available for complex scenes.
-
- If you run into a scene which is too complex to parse with 640K of memory
- (as evidenced by an allocation error message during the "Parsing" phase),
- QuarterDeck's QRAM or VIDRAM are programs which will extend DOS memory to
- 704K/740K using either EMM or Video RAM memory, respectively. There are
- also Public Domain programs (such as 740K.COM/SYS (?)) that will accomplish
- the same thing. MAKE SURE you use the -d (no display) option if you use
- one of these programs or upper memory corruption could occur!!
-
- The raytracer will use up to ALL available DOS linear memory, but no EMM
- or XMS support is present at this time.
-
- DKBTrace was formerly distributed with a plethora of utilities, some for
- data file generation, some for image translation. There are simply so
- many of them now, we have decided to release a separate archive containing
- all of them, updated to the new DKB 2.12 standards. Many of these are
- still being converted to conform with the new standards, so they will
- be released following the actual release of DKB 2.12.
-
- This program is being distributed in the following packages:
-
- DKB212AM.xxx: Amiga executables dkb881 and dkbieee.
-
- DKB212IB.xxx: IBM PC/MS-DOS executables dkb.exe and dkbno87.exe.
-
- DKB212DT.xxx: Many new, and some older updated sample data files, with
- required imagemap texturing GIF and IFF files for the
- provided sample scenes. Also, .def files for running
- the raytracer, and the three standard include files
- colors.dat, shapes.dat, and textures.dat.
-
- DKB212SR.xxx: Source code for DKBTrace 2.12, include files, linkage
- files, and makefiles for Amiga, MS-DOS, Mac and Unix.
-
- DKB212DC.xxx: Documentation files for DKB 2.12, and for data file
- conversion up to version 2.12. Also contains the
- whats.new file for changes from version 2.0 up to 2.12.
-
-
- DKBUTAMI.xxx: Amiga executable utilities for DKBTrace.
-
- DKBUTIBM.xxx: IBM executable utilities for DKBTrace.
-
- DKBUTSRC.xxx: Source code for utilities for DKBTrace.
-
- DKBUTDOC.xxx: Documentation for DKBTrace utilities.
-
-
- The xxx extensions are one of:
- zip - ZIP file format for IBM's (text files include CR-LF)
- lzh - LHArc format for Amiga (text files contain only LF)
- tar.Z - compressed tar format for UNIX (text files contain only LF)
-
- There is a document in the DKB21Doc.xxx archive which describes the
- conversions required to use data files for DKBTrace version 1.2 with
- the older 2.0 - 2.05 version. This file is called 12to20.doc. There is
- now another file describing the required data file conversions from version
- 2.0 through 2.05 up to the new DKB 2.12 standard. This file is called
- 25to210.doc.
-
- This readme file is in all DKB 2.12 archives.
-
-