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FlashMandel is "THE" Mandelbrot and Julia fractals rendering program for the AmigaOS4 platforms :-) It's a very long time project, development started in the end of '90 when I was sixteen and learned about fractals reading and looking on specialized newspapers some beautiful pictures. Early develpoment started on an Amiga 2000 with KS1.3 1MB Ram and SAS/C compiler. FlashMandel was developed by me, Dino Papararo, in my freetime to learn and improve my skills with C/ASM code and AmigaOS specific API functions. In a second time joined Edgar Schwan adding a lot of interesting features like reaction GUI, arexx ports and scripts, localization, MAPM arbitray precision math, installer script, a dedicated web page, and many various bug fixes. Flashmandel was focused on OS2.x and OS3.x with 68k cpus, main critical parts were written in 68k assembler. I remember latest 68k version was developed on my A4000 with Cyberstorm PPC 604e/68060 mixing binaries between 68k and ppc code under WarpOS. Later I sold all my Amiga stuff but after many years I wanted to come back to my preferred computer and hobby, programming in C/ASM under WinUAE. Sadly after first entusiastic days I had to admint experience was not the same. So I decided to come back for real with a true AmigaNG platform! Sooner I got a 2nd hand "Pegasos 2" board. Today I can boot three different OS, Amiga OS4.1fe, MorphOS and Linux Debian. It's really a funny machine, much much better than any emulated one and obviously any pc :-) So my actual development system is -> Pegasos II G4()1GHz 2GB Ram - Radeon 9250 AmigaOS4.1fe update 2 with latest OS4 SDK and GCC 8.4.0 FlashMandel uses handmade assembler routines for max speed! ..and "SPEED" it's main feature. With new implemented altivec routines, for altivec version, renderings are all near realtime! I think it's one of the fastest mandelbrot and julia sets rendering program ever seen on a single core cpu. Due it's development for AmigaOS it lacks of multiprocessing features. But once implemented, it can be adapted for sure to work on more cpu cores. FlashMandelNG primary features are: Uses Reaction GUI, Arexx port, Localization, Arbitrary precision math via GMP Library and don't need any installer, just click 'n run! C and Asm sources are also included, you can recompile it just typing MAKE! It's faaast even on emulated Amigas and can render even with direct memory access (TURBO OPTION) ..under x86 emuation it's faster than many others x86 native fractal programs ;-) Saved pictures can be reloaded and further explored at all supported screen's resolutions. It's really cool and totally free ;-) Additional developing notes: FlasdhMandelNG is developed with GCC 8.4.0 under Pegasos II and AmigaOS 4.1fe. Altivec code was firstly developed and tested under Powermac G5 Quad hardware ..Now I can test it directly on my Pegasos II ;-) Altivec code is the most optimized ever seen and could be used as nice programming guide. Many many thanks and greetings to my friend Edgar Schwan, FlashMandel CoDeveloper, for his great efforts in Localization, Arexx and Reaction integration, GMP Library port, etc... In archive we have two binaries: 1) FlashMandelNG_OS4 -> critical routines are written in PPC handmade assembler to gain max speed on all powerpc cpus families from 603 to G5! 2) FlashMandelNG_OS4_altivec -> critical routines are written in C code but with full Altivec directives, engine processes 4 pixels per time! Sadly due limited hardware implementation, precision is limited to float32 datatypes. I'd like to add another binary for Tabor and its SPE unit! ...For now it was not possibble due GCC v8 incompatibilities with SPE code ..maybe in the next release we got it! ..so what version is the faster one? On a G4 latest FlashMandelNG Altivec versions are about 3x faster than FPU version because it processes 4 pixels per time! ..but it's also less accurate due Float32 single precision calculations (limited by hardware) vs Float64 FPU doubles, so for deep zooms you need to switch sooner to high precision math calculations. About precision one of main features of FlashMandel is the ability to use arbitrary precision math. To archieve this I used GMP library, Edgar did a great job porting it from linux sources ..and now we have it also on Amiga systems :-) FlashMandelNG_OS4 is Giftware, If you like it please sent me nice goodies ..An email or common postcard is ok too! :-) It's possible to include it in magazines and CDs, if so please let me to have a free copy of paper/media support ;-) Version history: New in 4.4 Now you can scroll fractal map with keyboard arrow keys and zoom in and out with 'i' and 'o' keys. Granularity can be choosen pressing from '0' to '9' on keyboard with a minimun of 1/12 up to 1/3. Now LibGMP has been optimized for 'Altivec support', sadly speed increase is very minimal for Altivec version. Small changes and enanchements. New in 4.3 Maxed recursion algorithm up to 4x4 pixel blocks. Added new ToolType SMREQUESTER, set this to 0 to use ToolTypes parameters or 1 to choose resolution from Screenmode requester's list at startup. Added new ToolType PLAYSOUND, set this to "0" to avoid applause sound at end first rendering. Fixed mem allocation bug for orbit window. Linked against LibGMP 6.2.1 Many other small internal changes, cleanups,small fixes/optimizations. New in 4.2 Fixed Turbo Mode (rendering in memory) in 8 bit screens. Fixed bitmap scaling effect for zooms. Implemented use of Screen's "Custom Bitmaps" and made some other internal changes. OS4 "API calls" are used vs "standard C" functions whenever possible. New in 4.1 Still many fixes and under the hood improvements. Now a real "fading effect" is present also in 24bit screenmodes. New in 4.0 Fixed ARexx functions and scripts. Fixed Load Palette function. Where possible OS4 API calls are replaced over C library standard functions. Altivec binary doesn't crashes more on systems without an altivec unit and exits with a warning. In Altivec binary ARexx port is disabled and Altivec "Java/IEEE" mode is turned off because useless for our purposes, it was only an experiment. Reindented, bugfixed and cleaned up code. Recompiled project against current SDK V53.34 released for AmigaOS4. New in 3.9 Bugfixed "Recalculation" and "Undo" functions, optimized Altivec code and enabled Java/IEEE mode. Now Fading effect is present also in 24bit pictures. Made other small fixes, enanchements and cleanups. Raised default iterations from 320 to 4096, speed is only partially affected :-) New in 3.8 Enabled Mouse Wheel "Zoom in" frame for a better granularity control. Now you can press ESC key to exit when you have to choose Julia fractal type. New in 3.7 Enabled Middle Mouse Button to Zoom in the specified area. Better handling of GT_GetIMsg and GT_ReplyIMsg intuition routines. New in 3.6 Enabled GFX renderings also on 24bit screens, minor optimizations and speedups. New in 3.5 It's a bugfix release, now FlashMandel workbench startup and palette requester are fixed. New in 3.4 Now load/save picture functions uses datatypes.library, an additional file with same picture name followed by ".fmng" extension is created to save and reload coordinates. Load picture is stil compatible with previous images. New in 3.3 Implemeted load/save picture also for 24bit screens. Greetings to to Massimiliano Scarano for his support into 24bit picture ilbm save function. New in 3.2 Implemented 24 bit screens support for truecolor fractals. Fixed Histogram coloring algorithm. Fixed and speeded up recursive drawing functions. Minor code fixes and code clean up, now indentation follows GNU rules to 80 cols To save 24 bit pictures you have to switch to 256 colors screen due to a bug in iff ilbm 24bit save function. It will be resoved hopefully in a next release. New in 3.1 Implemented Histogram coloring algorithm as currently decribed on wikipedia, now you can display a wider range of colors at same time. Recoded a lot of stuff following the current best "C Programming practices", i.e. no more use of global vars for inner functions. Fixed still some serious bugs, this update is a "must have". New in 3.0 Finally Reaction GUI is fully reimplemented, Edgar did really a superb work about this! I reworked also color remapping to gave some nice alternative, i.e. try GUI remapping. A lot of bugs were fixed some of them really dirty, I have also cleanup the code and gained some small speedup! New in 2.9 Now Altivec C routines uses full intrinsics, generated code should be very mear to full handmade asm. Small bugfixes and code cleanup. New in 2.8 These are last days of COVID-19 quarantine in Italy, next week I'll come back to my daily work, ..so I decided to try to unlock once for all full potential of Altivec vector unit and... I did it! :-) Now FlashMandelNG processes 4 pixels per time in the altivec version and it's nearly realtime for zooms with low/mid iterations. One of the most important issues was how to control Altivec power without loosing speed. So I took a challenge vs myself and I won it! The my Altivec algorithm is fastest ever seen, preserving full power and using a smart and efficient control for results! :-) Altivec version speeded up to 3x!! Have fun! New in v2.7 Minor speed improvements, I think to have reached tha max possibile performances on a G4. Only Altivec code can be highly speedup until to 4x, I'm working on it! Fixed running multiple instances of FlashMandel. Now only RTG screens are supported. Recompiled with GCC 8.4.0 and latest adtools. Various minor bugfixes and improvements. New in v2.6 Raised up GMP Library to actual latest version 6.2.0 (Edgar Schwan) Implemented periodicity checking to speed up renderig in black areas (Mandelbrot set). Speeded up a bit Altivec version, we still calc one pixel per time, I'd like to do 4 pixels per time using full Altivec power. Bugfixed rendering Z^n+C with of power set to 16 or more. Raised max iterations to 2^31-1. Fixed Load and Save pictures. Removed all debug symbols. New in v2.5 Due Covid19 virus in few weeks I did what I used to do in years due my lack of time.. Finally I have implemented GMP Library numeric support. Now you can zoom into Mandelbrot and Julia sets until 4096 precision's bits are saturated. On current Amiga generations maybe you need to live for 500 years to saturate all precision bits.. Eventually I can improve precision bits even furter :-) I changed a bit the main recursion algorithm and now calculations are about 10% faster! I discovered and fixed some other annoyng bugs, at this time only the Arexx and Reaction code parts and needs to be revisioned, all other code is all updated. At this time Reaction GUI isn't implemented because it was developed with Reactor Tool. Sadly Reactor doesn't support PowerPc but only 68k, so object file generated can't be linked with other sources and than GUI fallback to system GadTools. If there will be ever a new release of Reactor with PPC/OS4 support I'll be happy to reintroduce Reaction GUI and give again to FlashMandel the right look! I decided also to renew iff chunk format of saved pictures, so now you can't load old fractals and continue zooming inside. New in v2.3 Old heavy bug fixed - if Flashmandel didn't found a locale catalog crashed at startup Other fixes and little improvements applied New in v2.2 Now finally with a real Amiga and sadly in Covid-19 era in Italy, I had a lot cpu power, and a lot of time, to test and fully bugfix and cleanup nearly all the code. Lowered resolution of all pictures to 1280x720 to reduce archive size, old pictures are incompatible to this new version. Added some new palettes and changed default one. Reviewed some Arexx scripts. Refreshed english docs. New in v2.1 Partial MorphOS compatibility via OS4EMU - Load and save didn't work Reworked and eliminated all pre AGA stuff. Now we have 3 different binaries, normal GCC code, Altivec code and New PowerPC handmade asm version. Added DUTCH catalog language - thanks to Bennymee for translation Minor fixes and changes. New in v2.0 (Re)Enabled AREXX support (Please download and install AWNP_2-54.lha archive from Aminet to let it run) Fixed tooltypes To Do: AmigaOne Tabor A1222 specific SPE version "Bottomless wonders spring from simple rules, which are repeated without end." cit. Benoit Mandelbrot Enjoy, Amiga Rulez!
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