Same, i never had an 060 Amiga, but a 68030 50MHz AGA. However, based on today's tech in comparison: This runs on an 060 (40-50MHz), 32bit CPU, with AGA (non-3D) @ 14MHz, 8-bit 4-Channel Paula Sound Chip.
@@contrast5222 I am not sure we are talking about the same thing - but I believe it's a hihat (although my hihats are always sounds of trees etc pitched up) that you are hearing. Also use a lot of delay on the various synth layers - might be that :)
I can't express enough what a complete achievement this is. Just...insane. This would melt people's minds in 1995, let alone 1985! Imagine if you saw this on an Amiga 500 floor model at Sears next to an Apple IIe.
I'm usually extremely sceptical reading overly possitive comments about new Amiga demo as it is simply nostalgia talking through."Amazing, spectacular, innovative,ground breaking" looking at an ugly cube accompanied by annoying music. Holly shit was I possitively surprised here.georgous. Beautifully art directed and crafted.best demo in very very long time.Wayching 4th time in a row.
Cool! Pulse and Relic are two of my old favourites. Especially they show what you can do if you crack your knuckles and work really hard on each scene. Ref stuff like the planet explosion in Relic and that city meltdown part as well as the underwater searchlight scene in Pulse. I mean they focus on the end result and try to achieve that vision
@@mesonparticle that's awesome, I lost contact with all my scene friends and now write code for industrial machines. It's just not the same, none of my friends now would get this stuff...
@@alcomatt it works on Teo's Vampire 1200 and Frequent's standalone Vampire so I think it should be fine. I'm reading up on the Vampire's SAGA registers and AMMX Very interesting features so I'd love to make use of that for a final version. Most notorious is that there is a c2p instruction in the AMMX chipset :D
I wonder on witch amiga does it run but it is very impressive, I wonder how proud Jay Miner and the original team should be seing that nearly 40 years after building the best computer ever, created by a handfull of fabulous crazys, that's the magical recipe. Each time I see what Amiga can do, I just regret it didn't become a standard, it was closed however.
None of the Commodore hardware was ever closed, on the contrary, it was very much open, you'd even get the schematics with your computer, and we had books discussing how to program every hardware register in detail.
Obviously it's shader free when there is no shader hardware. It has a 2D accelerator, the Blitter, which has been used to do 3D rendering in the past (case in point: Brainstorm's "Blitter Miracle" demo in 1990-1991.)
Un 060 d'après le NFO, probablement à 100mhz, mais une Vamp est sans doute mieux. C'est du C2P vers du HAM8. 32Mb de données pour un exe de 200ko. J'ai récupéré la vidéo 320x200 UA-cam et ca fait 17Mb de MP4. Du coup je pense que les 32Mb de données pourraient très bien être majoritairement du flux vidéo qui est décompressé par un algo adapté au 060 (et moins puissant que MP4) et transformée en C2P en temps réel, la vidéo elle-même étant totalement précalc sur PC ou Amiga bien avant. Le tout est peut être agrémenté de 2/3 effets temps réels pour ne pas être accusé de streaming pur (le fond luminescent quand le nageur se noie par exemple). [EDIT] bon il semble que les 32Mb sont essentiellement composés d'une sountrack de 14Mo et de diverses images et autres fichiers. C'est peut être pas que du streaming (sauf s'il est caché dans la soundtrack :) )
Laisse tomber. Les tarés de l'Amiga ne comprennent rien de toutes façons. Heureusement qu'avec de telles specs un 'Amiga', heu non, pardon, une machine qui n'existait pas à l'époque, avec 060 à fond les manettes, arrive à faire ça. Certes il y a du boulot derrière évidemment, bravo à toute l'équipe derrière cette production, mais avec une telle config il n'y a pas de quoi tomber à la renverse. Visuellement ça reste de gros pâtés de pixels, la bécane étant incapable de faire mieux, et pas à 50 fps.
Merci !!! J'ai l'impression d'être si seul lorsque je balance ce genre de discours. Après avoir craché sur la techno PC pendant des années, maintenant ils dépensent des fortunes pour des configs que seuls quatre pécores ont les moyens de s'offrir juste pour faire tourner leur Amiga comme... un PC de 1995. Quand je vois tourner ce genre de démo, je me dis d'abord que ça n'a rien à voir avec ce que propose l'architecture Amiga et ensuite que pour faire ça, mieux vaudrait le faire sur PC, tout simplement. Mais ces gens ne veulent pas accepter le fait que l'Amiga est aujourd'hui une pièce de musée au même titre qu'un Amstrad CPC ou un C64. Une bonne démo Amiga tourne sur une machine "stock" ou presque, avec pourquoi pas un peu de Fast-RAM (512Ko de plus pour un Amiga ECS, quelques Mo pour un Amiga1200). Quand je vois tourner certaines démos ECS sur une A500 d'époque avec juste 512K de Chip et 512K de Fast-RAM, là on voit bien le chemin qui a été parcouru. Une démo comme celle-ci est tellement loin de ce pourquoi Amiga Inc a conçu le standard Amiga...
@@iXien pareil pour Atari ST. avec un hdd en SD et et 4Mo pas plus et même comme ca y a moyen de faire des trucs ou qu'on aurait rêver de faire à l’époque.
Smart coders and, for its time, a fairly well engineered machine.This demo needs either an Amiga 1200 or Amiga 4000 to run it (AGA), but also an accelerator board with a 68060 and probably a fair amount of fast ram to run.
Some rant about the code I wrote on Pouet. The zoomer: It is an infinite zoomer inspired by TBL's spectacular zoomer in Magia. Large images (up to 8192x8192) with lots of detail get converted to polar images. The bigger the polar image, the further we can zoom in. The neat thing about this conversion is that only the details that are important while zooming towards a single point are kept, while the rest of the details get discarded. The original filesize of some of these images maybe 200 MB or so. The polar image gets mapped on your typical tunnel table of U,R coordinates. Instead of scrolling the r-coordinate, as you would in a tunnel, it is scaled by a zoom factor. To avoid choppy movement, there is some subtexel precision on the radius and angle coordinates allowing very smooth movement. Without the subtexel precision the slow movement is impossible. The LUT itself was made piecewise linear to avoid reading so much table data from RAM. The effect is embedded in the c2p to save further bandwidth. At first we tried automatically stitching together multiple smaller images, but the seams between the images always turned out blurred. Painting these images is also a huge amount of work. I seem to remember TBL saying Louie spent a lot of effort on that Magia zoomer and I'm really impressed at how long it zooms and its seamless transitions. In the end we came up with the idea of using gigantic fractal images and we called upon Evilryu to help out with coding these in Shadertoy. He tried several kind of fractal formulas and color combinations. The most detailed ones caused too much aliasing and in the end the techno world you see in the demo was chosen. The images are blurred before conversion to polar to reduce some aliasing. Since many images were made I'm tempted to release another demo just featuring all of these variations. Lots of cool stuff. While this was going on Farfar modeled the mask object which fit very well inside this technomaze imagery. Skybox: 6 fractal images rendered with 90 degrees field of view from a single point mapped on a cube. The 3d-engine/exporter: The exporter is taking a lightly extended GLTF format. It has got a few custom properties exported from Blender to describe particle systems. One very convenient thing about the exporter is that it works on a 24-bit original scene and collects all textures, overlays, shadetables into a common palette that everything gets remapped to. The palette generator tries to make sure there are colors for transparent effects such as particles and glow. Without this automation it is very painful to manage the palette for Amiga 3d scenes. Animation: - Node animation and hierarchy - Shape morphs Polyfillers: - Flat - Affine texture - Perspective correct texturemapping (unused) - "Normalmap" - "Normalmap" + Texture (unused) The "normalmap" is actually a cylinder map with (angle,y) components. So just adding an constant to this angle will make a light fly around the object on a fixed axis. The angle-constant is calculated using: math_function_trying_to_calculate_an_angle_somehow(camera_position,object_positi on)+sin(time)*i_want_to_see_the_light_moving_abit_more It is not going to please the phyics professors, but it is minimal overhead to get some dynamic looking lighting on Amiga. Particles: - Motion: turbulence field, velocity, dampening .. - Compiled sprites - Colored particles that can blend against eachother in 256 colors - Export time clustering to fake more particles The particle images are pieces of code that draw the particle. This way no extra cycles are spent on blending fully transparent areas within the particle image. Whether this gave any performance advantage is yet to be measured, however I always wanted to try it so left it in there. Antialiasing/post processing: Antialiased polygons are quite rare on the amiga scene. This AA method works by first detecting the silhouette of a mesh while backface culling. Edges that are shared between a backfaced culled triangle and a visible triangle make up the silhouette edge set. As these edges are encountered during rendering, the coverage data and background of the edge is recorded before the triangle is drawn. Then this data is blended back in after the triangle has been drawn. Sometimes this leads to bleedthrough artefacts, but these are then cleverly concealed by blinking and viewers attention are trivially diverted by the MPEG artefact like "glow". Glow: It is not limited to glowing towards light, but also glows toward darkness. The image brightness gets sampled in 16x16 interval grid. This gets linear interpolated across the surface and sent through Tone-Loc mapping before written to the surface. This glow has the property that it looks MPEG-ish. Making people think they are watching a Video-CD thing in 1998. FPU temporary registers: The demo changes the FPU rounding/internal precision mode so that 32-bit values can be stored in FPU registers without getting corrupted. This way one can store addresses and integers in tmp FPU regs instead of spilling them to RAM. Music: The music routine is approximating an original 16-bit signal in chunks of 512 samples using normalized_8_bit_signal[i] x amiga_channel_volume[chunk]. This gives more bit resolution in low volume parts of the track making the output better than pure-8-bit and without the volume loss of the traditional 14-bit technique. If the best approximation would be an volume of 31.5, then amiga_channel_volume of channel 0 would be set to 30 and of channel 1 to 32 etc. Hopefully giving a next multiplier of 31.5.
@@rloadah I wouldn't call that a rant... I call it information! Thanks for sharing! You Amiga democoders are wizards and I hope you take that as a compliment! :)
@@rloadah what do you mean by "compiled sprites"? "Antialiased polygons are quite rare on the amiga scene." - that is because there are only a handful of us left who are able and know how to write code which is fast enough on this hardware.
In the demo itself it is a custom format that gets replayed at somewhat higher than 8-bit quality by taking advantage of the Amiga's original 8-bit signal combined with volume mixing hardware (and it isn't the traditional 14-bit quality hack)
Music is killer (Xerxes does not disappoint, and delivers in spades, as usual), the graphics suck because they are low resolution, and I can imagine why they are: the rendering engine code is too slow. There is more performance to be squeezed out of the Blitter + 7 MHz MC68000 combination...
Yeah that's not why: Its not on a 68000, but a 68060, the fastest possible 68k native processor. Its on AGA as seen in the Amiga A1200, not the A500. This is heavily chunky2planar based and its likely using routines from Mikael Kalms. Kalms's C2P routines are routinely (heh) used in demoscene prods for their optimization. The reason its ''low res'' is also the reason why its technically impressive: The Martini Effect exhibits effects usually seen on far more powerful machines and with videocards being able to use pixel and vertex shaders. The effects seen in The Martin Effect (Depth of Field, Bloom, lightshafts, raymarching) are all computationally very intensive. These effects are achieved here with careful optimization, C2P routines, assembly and outright hacks to achieve the effect. Because of their intensity, the effect can only be run in low resolution. Another Amiga Wizard Group, Elude, often would distribute a Windows binary alongside their Amiga version - And you could tell the difference right away. It is low res, because they have to adjust for the limitations of the 060 hardware. All in all, a 060 Amiga is barely a Pentium 1 in rendering power. To see it pull these effects is nothing but impressive. PS: One of the developers, LoadError, made a comment around the technical aspect here: www.pouet.net/prod.php?post=920727
it's unbelievable what they can do with Amiga.... its masterpiece.
Awesome Amiga AGA Demo, i think it's the Best Demo from the Revision 2021.
10/10 Point. "Gänsehaut"
Amiga the Computer for the creative Mind.
0:48 the music made me smile soooooooo much ... love the "melody" at that point ...
I find it hard to evaluate 060 AGA Amiga demos on technical wizardry, but it's easy to evaluate this one on its artistic excellence.
Same, i never had an 060 Amiga, but a 68030 50MHz AGA.
However, based on today's tech in comparison: This runs on an 060 (40-50MHz), 32bit CPU, with AGA (non-3D) @ 14MHz, 8-bit 4-Channel Paula Sound Chip.
High praise and most appreciated ❤️
@@xerxes-music wat is this superb effect called, echoing through the arpeggator at the background at 1:17 ?
Like a “click clock” in the background ? (Is it part of the main arpegg or seperate ?)
@@contrast5222 I am not sure we are talking about the same thing - but I believe it's a hihat (although my hihats are always sounds of trees etc pitched up) that you are hearing. Also use a lot of delay on the various synth layers - might be that :)
This is how you do it. Marvelous Soundtrack and mindblowing coding and atmosphere.
I can't express enough what a complete achievement this is. Just...insane. This would melt people's minds in 1995, let alone 1985!
Imagine if you saw this on an Amiga 500 floor model at Sears next to an Apple IIe.
I'm usually extremely sceptical reading overly possitive comments about new Amiga demo as it is simply nostalgia talking through."Amazing, spectacular, innovative,ground breaking" looking at an ugly cube accompanied by annoying music.
Holly shit was I possitively surprised here.georgous. Beautifully art directed and crafted.best demo in very very long time.Wayching 4th time in a row.
Sentencees that start with "usually extremely sceptical" seems to end well. Thank you, Karol ❤️
Masterpiece of art. I love the music a lot, cheers to Xerxes.
This is excellent. great pacing, audio and visuals
Très très belle démo Amiga ! La scène démo Amiga reste toujours active malgré les années qui passent.
I start suspecting Xerxes track after few minutes and of course I find him in the team. Best 5:07 minutes spent since long time..
I like you 🥰😂
I have a huge handsorted archive of demos on my Amiga .. But this is still TOP 5.
The claustrophobic atmosphere is perfectly reproduced by the music.
Meson from Nerve Axis here. That demo had style ❤️
Cool! Pulse and Relic are two of my old favourites. Especially they show what you can do if you crack your knuckles and work really hard on each scene. Ref stuff like the planet explosion in Relic and that city meltdown part as well as the underwater searchlight scene in Pulse. I mean they focus on the end result and try to achieve that vision
@@rloadah Thanks, I appreciate it! 😘 Good memories coding stuff up with Schlott. Still my best friend and visits me frequently ❤️😊
Yay ❤️
@@mesonparticle that's awesome, I lost contact with all my scene friends and now write code for industrial machines. It's just not the same, none of my friends now would get this stuff...
Its ...state of the art...
super nice stylish demo. Well done Flex !
Now THIS is Digital Art ! 😀
I can't get enough of this.....
Hi
Greetings fellow traveller
@@Haddcore Oi!
@@mrN3CR0 Hullo!
UFF! Sowas von gggGeil...Absolute Insane! Arrgh....AMIGA RULEZ ! ❤❤❤
Increible, espectacular, no tengo palabras... el Amiga al límite...
Mis felicitaciones a los desarrolladores de esta Demo. Es una joya única! Gracias
While the whole demo is great, that music is really something else. Fantastic!
if this one doesn't win then i don't know what will
One day we'll have UA-cam live HD video on unexpanded Amiga 1200 in HAM8 superhires mode. Over built-in serial port. I swear.
still to this day the funniest machine ever created!
Running on an ‘060 Amiga at 40-50 MHz? Wow.
This is mouth-dropping. This team plenty of talent, so they deserve BIG F+CKING FAT CONGRATULATIONS!
Wow amazing what you can produce today on the much loved Amiga
Awesome!!! Good work.
Great!!! Me miss you a lot. Welcome back!
Masterpiece !
top production!
F*cking awesome!
So stylish, awesome demo!
102/100. Magic.
Music top notch ! Demo impressive
That's really impressive
I just learned what the Martini Effect is and now the demo makes a lot more sense.
I wonder if any of the crew scuba dives...
We don't :) Thats some scary shit hehe..
@@xerxes-music Man, I wish I had similar visual and experienced blissful audio when I do :)
@@xerxes-music and while you're here - has your demo been tested on Vampire 1200 V2 by any chance?
@@alcomatt it works on Teo's Vampire 1200 and Frequent's standalone Vampire so I think it should be fine. I'm reading up on the Vampire's SAGA registers and AMMX Very interesting features so I'd love to make use of that for a final version. Most notorious is that there is a c2p instruction in the AMMX chipset :D
The best
Only Amiga Makes It Possible
No : any machine with a fast CPU and the dumbest gfx card.
Awesome
So good...
holy fk this is so good
Pleasure for ears, eyes and
OMG!
Amiga powaaaaaa !!!!!! :)
I fucking love this.
I wonder on witch amiga does it run but it is very impressive, I wonder how proud Jay Miner and the original team should be seing that nearly 40 years after building the best computer ever, created by a handfull of fabulous crazys, that's the magical recipe. Each time I see what Amiga can do, I just regret it didn't become a standard, it was closed however.
They would be ashamed, on the contrary, as it all relies on the CPU.
None of the Commodore hardware was ever closed, on the contrary, it was very much open, you'd even get the schematics with your computer, and we had books discussing how to program every hardware register in detail.
What are the system requirements for this demo? Maybe a 060?
It's pretty amazing!
Amiga 4 ever!
Wow, that was really impressive 🙂🙂
THE MADNESS...THE POWER...
Killing music and killing technical programming, what else ....THANKS AMIGA FOR EVER
...and also 100% shaderfree ;) amiga rulez
Obviously it's shader free when there is no shader hardware. It has a 2D accelerator, the Blitter, which has been used to do 3D rendering in the past (case in point: Brainstorm's "Blitter Miracle" demo in 1990-1991.)
wow!
Killer
Anyone know the name of this track or have the direct link to this track in
better quality ?
For a link to the soundtrack, go to the pouet net page for the HQ version. I can't post a direct link here as it seems.
@@rloadah thanks LE ! excellent work man ! :)
Martin - it's on pretty much every streaming platform now. Glad you like it, sir ❤️
Amazing. I'm assuming this is AGA.
Looks like OCS / ECS to me, because I can see dithering.
Incredibile!
Is it WinUAE grab or from real machine? If it's real, so what's 060 was used 50-100MHz?
#WINNING !
beat like buck rogers movie
ЭТО ПОБЕДА, ПАЦАНЫ!
Ephidrena? :)
The FLEX name comes from Farfar, Loaderror, Evilryu, Xerxes from Loonies, Ephidrena, "no particular previous group", Brainstorm respectively.
@@rloadah Your demo is awesome indeed. ;)
Mash / Absolute!
@@ArtexStudios were you involved with the Cream demo by Absolute by any chance? I really like that one
amiga de nos jour ca ne veux plus rien dire.
c'est quoi les spec minimum pour qu'elle tourne comme ca ?
Un 060 d'après le NFO, probablement à 100mhz, mais une Vamp est sans doute mieux. C'est du C2P vers du HAM8. 32Mb de données pour un exe de 200ko. J'ai récupéré la vidéo 320x200 UA-cam et ca fait 17Mb de MP4. Du coup je pense que les 32Mb de données pourraient très bien être majoritairement du flux vidéo qui est décompressé par un algo adapté au 060 (et moins puissant que MP4) et transformée en C2P en temps réel, la vidéo elle-même étant totalement précalc sur PC ou Amiga bien avant. Le tout est peut être agrémenté de 2/3 effets temps réels pour ne pas être accusé de streaming pur (le fond luminescent quand le nageur se noie par exemple).
[EDIT] bon il semble que les 32Mb sont essentiellement composés d'une sountrack de 14Mo et de diverses images et autres fichiers. C'est peut être pas que du streaming (sauf s'il est caché dans la soundtrack :) )
Laisse tomber. Les tarés de l'Amiga ne comprennent rien de toutes façons.
Heureusement qu'avec de telles specs un 'Amiga', heu non, pardon, une machine qui n'existait pas à l'époque, avec 060 à fond les manettes, arrive à faire ça.
Certes il y a du boulot derrière évidemment, bravo à toute l'équipe derrière cette production, mais avec une telle config il n'y a pas de quoi tomber à la renverse.
Visuellement ça reste de gros pâtés de pixels, la bécane étant incapable de faire mieux, et pas à 50 fps.
Merci !!! J'ai l'impression d'être si seul lorsque je balance ce genre de discours. Après avoir craché sur la techno PC pendant des années, maintenant ils dépensent des fortunes pour des configs que seuls quatre pécores ont les moyens de s'offrir juste pour faire tourner leur Amiga comme... un PC de 1995.
Quand je vois tourner ce genre de démo, je me dis d'abord que ça n'a rien à voir avec ce que propose l'architecture Amiga et ensuite que pour faire ça, mieux vaudrait le faire sur PC, tout simplement.
Mais ces gens ne veulent pas accepter le fait que l'Amiga est aujourd'hui une pièce de musée au même titre qu'un Amstrad CPC ou un C64. Une bonne démo Amiga tourne sur une machine "stock" ou presque, avec pourquoi pas un peu de Fast-RAM (512Ko de plus pour un Amiga ECS, quelques Mo pour un Amiga1200). Quand je vois tourner certaines démos ECS sur une A500 d'époque avec juste 512K de Chip et 512K de Fast-RAM, là on voit bien le chemin qui a été parcouru. Une démo comme celle-ci est tellement loin de ce pourquoi Amiga Inc a conçu le standard Amiga...
@@iXien c'est des tarés, tu ne peux rien faire face à la folie.
@@iXien pareil pour Atari ST. avec un hdd en SD et et 4Mo pas plus et même comme ca y a moyen de faire des trucs ou qu'on aurait rêver de faire à l’époque.
Xerxes
Parsec ❤️ Your Revision track was absolutely stunning!!! So different and original. We will meet again I hope!
The man is a legend. Sound of the fjords, directly connected to one's cortical bus...
@@AnnatarTheMaia Parsec or me? Or both 🥰
Music giving me hints of the Amiga Unreal game soundtrack ua-cam.com/video/8NagmtM1epU/v-deo.html
Amiga is old man how on earth is this possible?
Smart coders and, for its time, a fairly well engineered machine.This demo needs either an Amiga 1200 or Amiga 4000 to run it (AGA), but also an accelerator board with a 68060 and probably a fair amount of fast ram to run.
Some rant about the code I wrote on Pouet.
The zoomer:
It is an infinite zoomer inspired by TBL's spectacular zoomer in Magia. Large images (up to 8192x8192) with lots of detail get converted to polar images. The bigger the polar image, the further we can zoom in. The neat thing about this conversion is that only the details that are important while zooming towards a single point are kept, while the rest of the details get discarded. The original filesize of some of these images maybe 200 MB or so.
The polar image gets mapped on your typical tunnel table of U,R coordinates. Instead of scrolling the r-coordinate, as you would in a tunnel, it is scaled by a zoom factor. To avoid choppy movement, there is some subtexel precision on the radius and angle coordinates allowing very smooth movement. Without the subtexel precision the slow movement is impossible. The LUT itself was made piecewise linear to avoid reading so much table data from RAM. The effect is embedded in the c2p to save further bandwidth.
At first we tried automatically stitching together multiple smaller images, but the seams between the images always turned out blurred. Painting these images is also a huge amount of work. I seem to remember TBL saying Louie spent a lot of effort on that Magia zoomer and I'm really impressed at how long it zooms and its seamless transitions.
In the end we came up with the idea of using gigantic fractal images and we called upon Evilryu to help out with coding these in Shadertoy. He tried several kind of fractal formulas and color combinations. The most detailed ones caused too much aliasing and in the end the techno world you see in the demo was chosen. The images are blurred before conversion to polar to reduce some aliasing. Since many images were made I'm tempted to release another demo just featuring all of these variations. Lots of cool stuff.
While this was going on Farfar modeled the mask object which fit very well inside this technomaze imagery.
Skybox:
6 fractal images rendered with 90 degrees field of view from a single point mapped on a cube.
The 3d-engine/exporter:
The exporter is taking a lightly extended GLTF format. It has got a few custom properties exported from Blender to describe particle systems. One very convenient thing about the exporter is that it works on a 24-bit original scene and collects all textures, overlays, shadetables into a common palette that everything gets remapped to. The palette generator tries to make sure there are colors for transparent effects such as particles and glow. Without this automation it is very painful to manage the palette for Amiga 3d scenes.
Animation:
- Node animation and hierarchy
- Shape morphs
Polyfillers:
- Flat
- Affine texture
- Perspective correct texturemapping (unused)
- "Normalmap"
- "Normalmap" + Texture (unused)
The "normalmap" is actually a cylinder map with (angle,y) components. So just adding an constant to this angle will make a light fly around the object on a fixed axis. The angle-constant is calculated using:
math_function_trying_to_calculate_an_angle_somehow(camera_position,object_positi on)+sin(time)*i_want_to_see_the_light_moving_abit_more
It is not going to please the phyics professors, but it is minimal overhead to get some dynamic looking lighting on Amiga.
Particles:
- Motion: turbulence field, velocity, dampening ..
- Compiled sprites
- Colored particles that can blend against eachother in 256 colors
- Export time clustering to fake more particles
The particle images are pieces of code that draw the particle. This way no extra cycles are spent on blending fully transparent areas within the particle image. Whether this gave any performance advantage is yet to be measured, however I always wanted to try it so left it in there.
Antialiasing/post processing:
Antialiased polygons are quite rare on the amiga scene. This AA method works by first detecting the silhouette of a mesh while backface culling. Edges that are shared between a backfaced culled triangle and a visible triangle make up the silhouette edge set.
As these edges are encountered during rendering, the coverage data and background of the edge is recorded before the triangle is drawn. Then this data is blended back in after the triangle has been drawn. Sometimes this leads to bleedthrough artefacts, but these are then cleverly concealed by blinking and viewers attention are trivially diverted by the MPEG artefact like "glow".
Glow:
It is not limited to glowing towards light, but also glows toward darkness. The image brightness gets sampled in 16x16 interval grid. This gets linear interpolated across the surface and sent through Tone-Loc mapping before written to the surface. This glow has the property that it looks MPEG-ish. Making people think they are watching a Video-CD thing in 1998.
FPU temporary registers:
The demo changes the FPU rounding/internal precision mode so that 32-bit values can be stored in FPU registers without getting corrupted. This way one can store addresses and integers in tmp FPU regs instead of spilling them to RAM.
Music:
The music routine is approximating an original 16-bit signal in chunks of 512 samples using normalized_8_bit_signal[i] x amiga_channel_volume[chunk]. This gives more bit resolution in low volume parts of the track making the output better than pure-8-bit and without the volume loss of the traditional 14-bit technique. If the best approximation would be an volume of 31.5, then amiga_channel_volume of channel 0 would be set to 30 and of channel 1 to 32 etc. Hopefully giving a next multiplier of 31.5.
@@rloadah I wouldn't call that a rant... I call it information! Thanks for sharing! You Amiga democoders are wizards and I hope you take that as a compliment! :)
@@TemalCageman wait, WHAT!?! The graphics are so bad that I thought this is an OCS/ECS demo! It's this SLOW on a MC68060!?!
@@rloadah what do you mean by "compiled sprites"?
"Antialiased polygons are quite rare on the amiga scene." - that is because there are only a handful of us left who are able and know how to write code which is fast enough on this hardware.
Is music a mod or an mp3?
its mp3 - but made in a tracker (renoise)
In the demo itself it is a custom format that gets replayed at somewhat higher than 8-bit quality by taking advantage of the Amiga's original 8-bit signal combined with volume mixing hardware (and it isn't the traditional 14-bit quality hack)
гДЕ выкачать все демо на амига с Revision 2021???
On scene org, the demos have been uploaded to the revision 2021 - amiga demo folder: files.scene.org/browse/parties/2021/revision21/amiga-demo/
@@rloadah Thank you!!!!
Wtf
Music is killer (Xerxes does not disappoint, and delivers in spades, as usual), the graphics suck because they are low resolution, and I can imagine why they are: the rendering engine code is too slow. There is more performance to be squeezed out of the Blitter + 7 MHz MC68000 combination...
Yeah that's not why:
Its not on a 68000, but a 68060, the fastest possible 68k native processor.
Its on AGA as seen in the Amiga A1200, not the A500.
This is heavily chunky2planar based and its likely using routines from Mikael Kalms. Kalms's C2P routines are routinely (heh) used in demoscene prods for their optimization.
The reason its ''low res'' is also the reason why its technically impressive: The Martini Effect exhibits effects usually seen on far more powerful machines and with videocards being able to use pixel and vertex shaders.
The effects seen in The Martin Effect (Depth of Field, Bloom, lightshafts, raymarching) are all computationally very intensive. These effects are achieved here with careful optimization, C2P routines, assembly and outright hacks to achieve the effect.
Because of their intensity, the effect can only be run in low resolution. Another Amiga Wizard Group, Elude, often would distribute a Windows binary alongside their Amiga version - And you could tell the difference right away. It is low res, because they have to adjust for the limitations of the 060 hardware.
All in all, a 060 Amiga is barely a Pentium 1 in rendering power. To see it pull these effects is nothing but impressive.
PS: One of the developers, LoadError, made a comment around the technical aspect here: www.pouet.net/prod.php?post=920727
@@TeiTenga fuk yes my man :)
Masterpiece!