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-
- DKBTrace 2.04
-
-
-
-
- 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 archive contains two versions of the raytracer:
-
- traceffp - Fast Floating Point version of the raytracer.
- This version will run on any Amiga with sufficient
- memory.
-
- trace881 - 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 archive also contains two versions of the raytracer:
-
- 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 6.0 with maximum optimization,
- so it should be a LOT faster than previous versions. There are MAKEFILE's
- and link files (.lnk) provided for both MSC and for Turbo-C 2.0, for
- compatibility with prior versions. Note, however, that Microsoft C's
- execution time is fully 20% faster than Turbo-C's!
-
- 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 (it hasn't for me, yet, but that should be about the only reason
- it ever would, now...) 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, or even
- with DEBUG, if you're a real die-hard hacker. 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 objects.
-
- 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.
-
- In addition, the following utilities are provided (these will run on any
- Amiga system).
-
- DumpToIFF - Converts the raw 24 bit output files of the raytracer into
- hires HAM images.
-
- syntax:
- DumpToIFF [options] input-file [output-file [palette-file]]
-
- options are:
- -d Suppress Floyd Steinberg dithering
- -pfilename Output a colour palette for the picture
-
- The colour palette for one image may be used in other images.
- This is useful for animations in order to force the entire
- animation to use the same colour palette.
-
- eg.
- DumpToIFF -pmyImage.palette myImage.dis myImage.ham
- DumpToIFF myImage2.dis myImage2.ham myImage.palette
-
-
- Dump2RGB - Converts the raw 24 bit output files of the raytracer into
- three separate dump files for red, green and blue. Note
- that the extension .DIS is assumed for input files, so
- "input-file" should not specify any file name extension.
- The extensions .red, .grn, and .blu will be automatically
- supplied for the color-separated output files.
-
- syntax:
- Dump2RGB [options] input-file
-
- options are:
- -wxxx Output image width
- -hxxx Output image height
-
- Dump2Raw - Same as Dump2RGB but takes the size from the input file
- and uses less memory. This takes no size options.
-
- syntax:
- Dump2Raw input-file (no extension, .DIS assumed for input)
-
- Sculpt2DKB - Converts a Sculpt-Animate 3D .scene file into DKB format.
- At the current time, smoothed triangles are not supported. The
- only information converted is the information on the polygons,
- the colours, and the textures. Lightsources, viewpoints, and
- world information is currently ignored.
-
- syntax:
- Sculpt2DKB scene-file dkb-dat-file
-
- You must edit this file after the conversion to add a viewpoint
- and lightsources as needed.
-
- The IBM / Compatible version has all the above but DumpToIFF, plus the
- following two utilities:
-
-
- GlueTGA - Glues several .TGA (TARGA-24) files together into one.
- Uses the Y-offset in the header to insert the pieces
- into their respective positions in the final image.
- Takes the image size from the first supplied input file's
- header. This is for putting together several pars of
- an interrupted trace. The .TGA extension is assumed, and
- will be added to file names if not otherwise specified.
-
- syntax:
- GlueTGA output-file input-file [input-file]...
-
- HalfTGA - Shrinks a .TGA (TARGA-24) file to half it's X and Y size.
- For reducing size of output images on lower resolution
- systems. Does not interpolate colour values, just drops
- odd pixels. Extension of .TGA is also assumed and added
- if not specified for files.
-
- syntax:
- HalfTGA input-file output-file
-
- Also, a notable difference from the Amiga to the IBM is that the DUMP2RAW
- utility writes .red, .grn and .blu file extensions on the Amiga, but uses
- .r8, .g8, and .b8 respectively on the IBM. This is to be compatibile with
- the PICLAB post-processor's "RAW" format
-
-
- The main program documentation can be found in the file DKB.DOC and the
- documentation for the Amiga specific utilities may be found in the
- file AmigaUtils.doc. The IBM utilities are simple enough that the usage
- messages should be practically self-explanatory.
-
- This program is being distributed in four separate packages:
-
-
- DKBTrace.zip: Executables for dkb.exe and dkbno87.exe
- documentation files
- Sculpt2DKB, Dump2RAW, GlueTGA, HalfTGA executables
-
- DKBData.zip: Many sample data files
-
- DKBSrc.zip: Source code for DKBTrace, Amiga utilities, and
- IBM Utilities.
-
- DKBPics.zip: Sample pictures produced by the raytracer.
- (You could render these yourself using the
- data files in the DKBData.zip archive).
-
-
- There is a document in the DKBTrace.zip archive which describes the
- conversions required to use data files for DKBTrace version 1.2 with
- the new 2.04 version. This file is called 12to20.doc.
-
- This readme file is in all three archives.
-