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Original N64 controller working on Sega Dreamcast playing recompiled port of Mario 64. Simple demo of Joypad OS N64-2-DC adapter app firmware mapping every N64 button to a unique Dreamcast button. Including the Dreamcast’s less known C, D, and Z buttons. Rumble pack too. ((🎮))

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Robert Dale Smith

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43,492 görüntüleme • 6 ay önce •via X (Twitter)

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UN-FREAKING-BELIEVABLE!!!! While I've been working on fixing the last couple of bugs in the Mario Kart 64 DC port, getting us ready for the alpha release, jnmartin has gotten STAR FOX 64 up and running on the Sega Dreamcast in just two freaking days!?!? Sure, there are plenty of graphical glitches, and there's no audio yet... but W T F, it even runs well already!?! Freaking INSANE!! Anyway, surprise! The next N64-to-DC port has been chosen! Practice your barrel rolling, Dreamcast fans!
1:22

UN-FREAKING-BELIEVABLE!!!! While I've been working on fixing the last couple of bugs in the Mario Kart 64 DC port, getting us ready for the alpha release, jnmartin has gotten STAR FOX 64 up and running on the Sega Dreamcast in just two freaking days!?!? Sure, there are plenty of graphical glitches, and there's no audio yet... but W T F, it even runs well already!?! Freaking INSANE!! Anyway, surprise! The next N64-to-DC port has been chosen! Practice your barrel rolling, Dreamcast fans!

Falco Girgis

44,070 görüntüleme • 11 ay önce

The next Nintendo 64 classic has just hit the Sega Dreamcast, thanks, once again, to the efforts of jnmartin! Here's over a minute of Super Mario 64 gameplay, captured directly from my DC! As is usual with jnmartin's work, the port plays like a AAA native release, with everything SH4ZAMed up, running fullspeed, and looking as crisp and vibrant as ever with the Dreamcast's sharp 480p video output! To convert your N64 ROM into a bootable Dreamcast image, follow the link to the automated builder on the GitHub repository: Let us know what you think and remember to keep Dreaming!
2:52

The next Nintendo 64 classic has just hit the Sega Dreamcast, thanks, once again, to the efforts of jnmartin! Here's over a minute of Super Mario 64 gameplay, captured directly from my DC! As is usual with jnmartin's work, the port plays like a AAA native release, with everything SH4ZAMed up, running fullspeed, and looking as crisp and vibrant as ever with the Dreamcast's sharp 480p video output! To convert your N64 ROM into a bootable Dreamcast image, follow the link to the automated builder on the GitHub repository: Let us know what you think and remember to keep Dreaming!

Falco Girgis

119,994 görüntüleme • 6 ay önce

As the legend says: if a piece of hardware exists, it must run Doom! Here’s a sneak peek of DreamColor Plus running Doom. This new PCB fully replaces the original controller board and takes the console to the next level. Key features include true dual analog sticks (no button mapping), a built-in color screen, integrated rumble, and even emulator support directly on the controller. It’s basically a massive evolution of the original Dreamcast controller, bringing more precision, feedback, and new possibilities. The DreamColor Plus campaign is now live: #Dreamcast #SEGA #Doom #RetroGaming #Homebrew #GameDev #IndieDev #GamingHardware #DreamColorPlus #Modding Angelo Felipe Pontes DrasgonDigger Estação Ficção Costenaro Play Frogbull
1:02

As the legend says: if a piece of hardware exists, it must run Doom! Here’s a sneak peek of DreamColor Plus running Doom. This new PCB fully replaces the original controller board and takes the console to the next level. Key features include true dual analog sticks (no button mapping), a built-in color screen, integrated rumble, and even emulator support directly on the controller. It’s basically a massive evolution of the original Dreamcast controller, bringing more precision, feedback, and new possibilities. The DreamColor Plus campaign is now live: #Dreamcast #SEGA #Doom #RetroGaming #Homebrew #GameDev #IndieDev #GamingHardware #DreamColorPlus #Modding Angelo Felipe Pontes DrasgonDigger Estação Ficção Costenaro Play Frogbull

Nai Adventure

24,767 görüntüleme • 3 ay önce

What would Super Mario 64 look like were it enhanced for the Sega Dreamcast? Well, modder Esppiral is setting out to answer exactly that question with his upcoming mod for our Mario 64 DC port, featuring enhanced geometry and textures, as well as Mario Galaxy's fresnel lighting! While this footage is still extremely early, and represents a work in progress, it is being brought to you by the same mad Dreamcast scientist who remastered Dead or Alive 2 and brought Xbox assets and effects to our port of Grand Theft Auto 3! Please be sure to support the original video and subscribe to Esppiral's channel for future updates and more mad Sega Dreamcast science:
4:02

What would Super Mario 64 look like were it enhanced for the Sega Dreamcast? Well, modder Esppiral is setting out to answer exactly that question with his upcoming mod for our Mario 64 DC port, featuring enhanced geometry and textures, as well as Mario Galaxy's fresnel lighting! While this footage is still extremely early, and represents a work in progress, it is being brought to you by the same mad Dreamcast scientist who remastered Dead or Alive 2 and brought Xbox assets and effects to our port of Grand Theft Auto 3! Please be sure to support the original video and subscribe to Esppiral's channel for future updates and more mad Sega Dreamcast science:

Falco Girgis

119,496 görüntüleme • 1 yıl önce

Sooo... How's our port of Sonic Mania to the Sega Dreamcast coming along!? SHE'S ALMOST DONE! We're getting ready for release!!! As you can see from these direct hardware captures, the game looks and runs amazingly on the DC! Multiple beta testers have now cleared the game on both Mania and Encore modes! Jnmartin worked his butt off finishing up the remaining effects, Michael Fadely is working on the final bit of polish, such as making sure the menu button icons show Dreamcast controller graphics, and I just opened a PR to put the gameplay code on the latest SH4ZAM commit... STAND BY FOR THE BLUE BLUR'S EPIC RETURN TO THE SEGA DREAMCAST!
2:09

Sooo... How's our port of Sonic Mania to the Sega Dreamcast coming along!? SHE'S ALMOST DONE! We're getting ready for release!!! As you can see from these direct hardware captures, the game looks and runs amazingly on the DC! Multiple beta testers have now cleared the game on both Mania and Encore modes! Jnmartin worked his butt off finishing up the remaining effects, Michael Fadely is working on the final bit of polish, such as making sure the menu button icons show Dreamcast controller graphics, and I just opened a PR to put the gameplay code on the latest SH4ZAM commit... STAND BY FOR THE BLUE BLUR'S EPIC RETURN TO THE SEGA DREAMCAST!

Falco Girgis

142,556 görüntüleme • 1 ay önce

Jesus Christ, jnmartin has officially implemented his first big improvement over the N64 original for the Sega Dreamcast port of Mario Kart 64! Now the jumpotron monitor screens in Wario Stadium and and Luigi Raceway are updating at a full 30FPS, or 6x the framerate of the N64! ...and he's doing this entirely in software with the DC's SH4 CPU performing slow, direct VRAM reads from the framebuffer into a temporary buffer in system RAM which is later passed to OpenGL which transfers it back into VRAM to update the jumpotron texture with... and the freaking Dreamcast doesn't drop a frame doing all this shit! Might want to keep that in mind, as a community... That accessing texture memory or the framebuffer directly from the SH4 via the "uint16_t vram_s[]" symbol that the video API within KallistiOS exposes, while comparatively slow, is not actually so slow as to be unrealistic for a well-optimized game to do anything useful with... very interesting!
0:26

Jesus Christ, jnmartin has officially implemented his first big improvement over the N64 original for the Sega Dreamcast port of Mario Kart 64! Now the jumpotron monitor screens in Wario Stadium and and Luigi Raceway are updating at a full 30FPS, or 6x the framerate of the N64! ...and he's doing this entirely in software with the DC's SH4 CPU performing slow, direct VRAM reads from the framebuffer into a temporary buffer in system RAM which is later passed to OpenGL which transfers it back into VRAM to update the jumpotron texture with... and the freaking Dreamcast doesn't drop a frame doing all this shit! Might want to keep that in mind, as a community... That accessing texture memory or the framebuffer directly from the SH4 via the "uint16_t vram_s[]" symbol that the video API within KallistiOS exposes, while comparatively slow, is not actually so slow as to be unrealistic for a well-optimized game to do anything useful with... very interesting!

Falco Girgis

24,032 görüntüleme • 1 yıl önce

With all of the excitement from Mario Kart 64 coming to the Sega Dreamcast, I've been getting bombarded with questions about whether any more progress has been made on our Mario 64 port... so here's a direct hardware capture of the latest build running on DC! The answer: HELL YES! Last time most people saw or played this port, it was plagued with performance, audio, and graphical issues... but as you can see from this footage, almost all of them have been resolved, and she's playing like a dream on the DC now! Wtf happened? Well, first of all, in the 5 years since the port initially started, I, along with others, such as UnknownShadow, have made progress optimizing and improving upon our OpenGL 1.2 driver, "GLdc," which drastically improved the overall performance of the port by decreasing the amount of time the Dreamcast's SH4 CPU spent on T&L, processing polygons. Next, chad developer, Bruce (or Bruck or Brucilicious, depending on who you are), went through and applied a bunch of bugfix patches from the upstream repo to the game to fix the majority of the graphical glitches such as clipping issues and Mario's iconic biker mustache from the previous releases (despite me trying to convince him to keep that one, as it's become a Dreamcast trademark). Finally, the original developer behind both the Sega Dreamcast and Sony PSP ports, MrNeo, has returned from hiatus and has begun redoing the audio engine to fix the artifacting and stuttering! Stay tuned for further updates and the inevitable rerelease of this N64 classic on Sega's finest little white box that still refuses to die!
0:45

With all of the excitement from Mario Kart 64 coming to the Sega Dreamcast, I've been getting bombarded with questions about whether any more progress has been made on our Mario 64 port... so here's a direct hardware capture of the latest build running on DC! The answer: HELL YES! Last time most people saw or played this port, it was plagued with performance, audio, and graphical issues... but as you can see from this footage, almost all of them have been resolved, and she's playing like a dream on the DC now! Wtf happened? Well, first of all, in the 5 years since the port initially started, I, along with others, such as UnknownShadow, have made progress optimizing and improving upon our OpenGL 1.2 driver, "GLdc," which drastically improved the overall performance of the port by decreasing the amount of time the Dreamcast's SH4 CPU spent on T&L, processing polygons. Next, chad developer, Bruce (or Bruck or Brucilicious, depending on who you are), went through and applied a bunch of bugfix patches from the upstream repo to the game to fix the majority of the graphical glitches such as clipping issues and Mario's iconic biker mustache from the previous releases (despite me trying to convince him to keep that one, as it's become a Dreamcast trademark). Finally, the original developer behind both the Sega Dreamcast and Sony PSP ports, MrNeo, has returned from hiatus and has begun redoing the audio engine to fix the artifacting and stuttering! Stay tuned for further updates and the inevitable rerelease of this N64 classic on Sega's finest little white box that still refuses to die!

Falco Girgis

34,186 görüntüleme • 1 yıl önce

JNMARTIN HAS BROUGHT US CHRISTMAS EARLY THIS YEAR!!! His port of Star Fox 64 to the Sega Dreamcast is officially complete and was just released! Here's 9+ minutes of spliced direct hardware captures, featuring footage from every mission running on an actual physical DC at 480p! I have to say, the game feels incredibly smooth and responsive on the DC and controls extremely well. Also... as you can see, at twice the resolution with progressive scan, she looks gorgeous even with my cheap-ass HDMI cables and USB capture card. While jnmartin had the game up and running on DC within (literally) 2 days, there was an enormous amount of time and energy invested into faithfully recreating the experience graphically, implementing various bugfixes, and hunting for performance gainz... the man has never been satisfied with anything short of amazing with his ports, and it really shows. Like his Mario Kart 64 port, Star Fox 64 is also using my SH4ZAM library to hardware accelerate the math and linear algebra routines for DC; however, unlike last time, he's gotten so good at performance gainz that I barely did anything at all on that side, other than writing a few little inline SH4 ASM routines to cover some operations that I didn't already accelerate within the API... Suffice to say, though, that everything from the vertex TnL pipeline, to audio decoding, to gameplay-related trigonometry routines has been optimized for the SH4's FPU... jnmartin even got to bust out the SH4's MMU to accelerate the translation of of the segmented address scheme used by the game on N64 (which was apparently some suggested memory management model in the N64 docs) into the DC's virtual address space--which previously had to be done in software... So even more gainz! Sorry, though... but pretty sure this is why the game won't work in the Flycast emulator currently... whoops! 🤣 Shout-out to darcagent for contributing DREAMCAST RUMBLE PACK SUPPORT (among other things) to the release. Rumble support has historically been a pain-point within our KallistiOS homebrew DC SDK, as many 3rd party rumble packs are non-compliant and either do what they want with certain rumble commands or screw up the entire maple bus when they receive something they have decided not to fully implement... Great job getting that shit sorted out and tested with so many packs. All of my exotic (and cheapo) 3rd party rumble devices that I was able to test with seemed to work great! Finally, lets give SonicDcer a round of applause for being the lead dude behind the original N64 decompilation--as it was his original work that allowed for any of this to even be possible. He also continued to offer support and advice throughout the entire porting process, like a total chad. Here's the link to the official GitHub repo with instructions for building a Dreamcast image from a StarFox N64 ROM:
9:03

JNMARTIN HAS BROUGHT US CHRISTMAS EARLY THIS YEAR!!! His port of Star Fox 64 to the Sega Dreamcast is officially complete and was just released! Here's 9+ minutes of spliced direct hardware captures, featuring footage from every mission running on an actual physical DC at 480p! I have to say, the game feels incredibly smooth and responsive on the DC and controls extremely well. Also... as you can see, at twice the resolution with progressive scan, she looks gorgeous even with my cheap-ass HDMI cables and USB capture card. While jnmartin had the game up and running on DC within (literally) 2 days, there was an enormous amount of time and energy invested into faithfully recreating the experience graphically, implementing various bugfixes, and hunting for performance gainz... the man has never been satisfied with anything short of amazing with his ports, and it really shows. Like his Mario Kart 64 port, Star Fox 64 is also using my SH4ZAM library to hardware accelerate the math and linear algebra routines for DC; however, unlike last time, he's gotten so good at performance gainz that I barely did anything at all on that side, other than writing a few little inline SH4 ASM routines to cover some operations that I didn't already accelerate within the API... Suffice to say, though, that everything from the vertex TnL pipeline, to audio decoding, to gameplay-related trigonometry routines has been optimized for the SH4's FPU... jnmartin even got to bust out the SH4's MMU to accelerate the translation of of the segmented address scheme used by the game on N64 (which was apparently some suggested memory management model in the N64 docs) into the DC's virtual address space--which previously had to be done in software... So even more gainz! Sorry, though... but pretty sure this is why the game won't work in the Flycast emulator currently... whoops! 🤣 Shout-out to darcagent for contributing DREAMCAST RUMBLE PACK SUPPORT (among other things) to the release. Rumble support has historically been a pain-point within our KallistiOS homebrew DC SDK, as many 3rd party rumble packs are non-compliant and either do what they want with certain rumble commands or screw up the entire maple bus when they receive something they have decided not to fully implement... Great job getting that shit sorted out and tested with so many packs. All of my exotic (and cheapo) 3rd party rumble devices that I was able to test with seemed to work great! Finally, lets give SonicDcer a round of applause for being the lead dude behind the original N64 decompilation--as it was his original work that allowed for any of this to even be possible. He also continued to offer support and advice throughout the entire porting process, like a total chad. Here's the link to the official GitHub repo with instructions for building a Dreamcast image from a StarFox N64 ROM:

Falco Girgis

30,965 görüntüleme • 7 ay önce

The time has finally come! Here's an actual hardware capture of me cruising through Corneria in jnmartin's port of Star Fox 64 running on the Sega Dreamcast! As you can see, the port has been progressing PHENOMENALLY over the last couple months. Everything plays super smoothly and is as responsive as lightning! The visuals also look clean and crisp rendered at 480p with the DC's PowerVR GPU. We're estimating that the port is about 95% completed, with the majority of the last few weeks being spent implementing the lighting and other special effects for certain areas (which you will soon be seeing as well). Finally, he's been working daily on JIT compiling the N64 display list code into SH4 assembly in real-time in addition to using my SH4ZAM library for what he hopes will be a final round of additional performance gainz! TL;DR: We have another AAA-quality Nintendo 64-to-Sega Dreamcast jnmartin port on our hands here! Stay tuned for the upcoming release!
3:12

The time has finally come! Here's an actual hardware capture of me cruising through Corneria in jnmartin's port of Star Fox 64 running on the Sega Dreamcast! As you can see, the port has been progressing PHENOMENALLY over the last couple months. Everything plays super smoothly and is as responsive as lightning! The visuals also look clean and crisp rendered at 480p with the DC's PowerVR GPU. We're estimating that the port is about 95% completed, with the majority of the last few weeks being spent implementing the lighting and other special effects for certain areas (which you will soon be seeing as well). Finally, he's been working daily on JIT compiling the N64 display list code into SH4 assembly in real-time in addition to using my SH4ZAM library for what he hopes will be a final round of additional performance gainz! TL;DR: We have another AAA-quality Nintendo 64-to-Sega Dreamcast jnmartin port on our hands here! Stay tuned for the upcoming release!

Falco Girgis

35,283 görüntüleme • 9 ay önce

I think it's time we all get a reality check on Diddy Kong Racing 64 for the Sega Dreamcast, including myself... So here it is: original DKR for N64 vs our ported DKR for DC, direct comparison with FPS counters enabled. The truth is that I've been staring at the FPS meter all weekend, obsessing over every little dip, vectorizing, loop unrolling, and optimizing every little expensive-looking loop I can see in the codebase to win back 0.1FPS at a time... totally losing sight of what the basis for comparison even was from the original... So how long has it been since you've played the original on N64? I'm not talking about via emulation with higher FPS and fancy upscaling. I'm talking about directly, on an actual, physical Nintendo 64. Full disclosure... prolly been half a decade now, for me! Anyway, the devs behind the decomp were kind enough to share with me some of their performance and timing analysis captures... so I figured we'd take a step back and have a little fun! I had no idea it was running at only 20FPS tops, capped at 15FPS for the WizPig races!? I just remember pissing myself at having never seen a game look that good or realistic in my entire life back in 1997 when DKR came out for the N64... All I know is I want to do this game justice... but the truth is that even though we're still cooking, already the Dreamcast runs consistently at 10FPS higher and runs at 4x the screen resolution with progressive scan output... What do you guys think? How's our port comparing?🤔
1:11

I think it's time we all get a reality check on Diddy Kong Racing 64 for the Sega Dreamcast, including myself... So here it is: original DKR for N64 vs our ported DKR for DC, direct comparison with FPS counters enabled. The truth is that I've been staring at the FPS meter all weekend, obsessing over every little dip, vectorizing, loop unrolling, and optimizing every little expensive-looking loop I can see in the codebase to win back 0.1FPS at a time... totally losing sight of what the basis for comparison even was from the original... So how long has it been since you've played the original on N64? I'm not talking about via emulation with higher FPS and fancy upscaling. I'm talking about directly, on an actual, physical Nintendo 64. Full disclosure... prolly been half a decade now, for me! Anyway, the devs behind the decomp were kind enough to share with me some of their performance and timing analysis captures... so I figured we'd take a step back and have a little fun! I had no idea it was running at only 20FPS tops, capped at 15FPS for the WizPig races!? I just remember pissing myself at having never seen a game look that good or realistic in my entire life back in 1997 when DKR came out for the N64... All I know is I want to do this game justice... but the truth is that even though we're still cooking, already the Dreamcast runs consistently at 10FPS higher and runs at 4x the screen resolution with progressive scan output... What do you guys think? How's our port comparing?🤔

Falco Girgis

51,979 görüntüleme • 3 gün önce

IT'S FINALLY HERE! #Doom64 has officially landed on the Sega #Dreamcast with this flawless, AAA-quality port by jnmartin. I've been following his work the entire time, beta testing (and making sure we didn't break anything in KOS), and it has been an absolute pleasure to see how much care and attention to detail has been put into bringing this #N64 classic to the DC! He has released all of the source code and tools required to build and play the game on his GitHub... but there are still a few small additions I would love to see the community pitch in to help with. It already has some bitchin' VMU icons, but we should definitely add support for: Mouse + Keyboard, Dual-analog sticks, and Rumble packs, to ensure that the DC port is the definitive version! #gamedev #retrogaming #doom
4:01

IT'S FINALLY HERE! #Doom64 has officially landed on the Sega #Dreamcast with this flawless, AAA-quality port by jnmartin. I've been following his work the entire time, beta testing (and making sure we didn't break anything in KOS), and it has been an absolute pleasure to see how much care and attention to detail has been put into bringing this #N64 classic to the DC! He has released all of the source code and tools required to build and play the game on his GitHub... but there are still a few small additions I would love to see the community pitch in to help with. It already has some bitchin' VMU icons, but we should definitely add support for: Mouse + Keyboard, Dual-analog sticks, and Rumble packs, to ensure that the DC port is the definitive version! #gamedev #retrogaming #doom

Falco Girgis

48,189 görüntüleme • 2 yıl önce

While reading the responses to jnmartin's #Doom 64 port to the Sega #Dreamcast, I stumbled upon the comments of a few haters who were stating that the DC version had absolutely NOTHING to offer over the Steam and Switch versions, claiming that we're just a community of wishful thinkers living in the past... OH. REALLY, NOW!? Actual hardware capture on the left of me playing the Steam-exclusive map, "Wretched Vats," on my DC, while the right is a recording of the same area from the Steam version... The Dreamcast version only offers up to 16 simultaneous dynamic lights onscreen, bump mapping on environments and weapons, controller (with dual analog) + mouse + keyboard support, VMU icons showing damage, quicker startup times, no forced online registration, supports all of the new Steam-exclusive levels, and now, for the first time ever, also runs mostly at 60fps... I do believe you've been Dreamcasted, haters. PS: When the algorithm inevitably destroys the footage due to compression, here's where you can download the original: #gamedev #retrogaming
0:40

While reading the responses to jnmartin's #Doom 64 port to the Sega #Dreamcast, I stumbled upon the comments of a few haters who were stating that the DC version had absolutely NOTHING to offer over the Steam and Switch versions, claiming that we're just a community of wishful thinkers living in the past... OH. REALLY, NOW!? Actual hardware capture on the left of me playing the Steam-exclusive map, "Wretched Vats," on my DC, while the right is a recording of the same area from the Steam version... The Dreamcast version only offers up to 16 simultaneous dynamic lights onscreen, bump mapping on environments and weapons, controller (with dual analog) + mouse + keyboard support, VMU icons showing damage, quicker startup times, no forced online registration, supports all of the new Steam-exclusive levels, and now, for the first time ever, also runs mostly at 60fps... I do believe you've been Dreamcasted, haters. PS: When the algorithm inevitably destroys the footage due to compression, here's where you can download the original: #gamedev #retrogaming

Falco Girgis

13,720 görüntüleme • 1 yıl önce

Today, PH3NOM brings us the historic gaming blasphemy to end all blasphemies... A little tech demo of a scene from Resident Evil 4 recreated within the PH3NOM engine... RUNNING ON THE SEGA DREAMCAST!!!! Here is a direct hardware capture of me playing on a stock DC, recorded with just a cheap-ass HDMI cable being fed into a cheap-ass USB capture card... admittedly after maybe 15 minutes of practicing to not embarrass myself. 🤣 I am so beyond impressed, though, at what I'm seeing from PH3NOM, after simply a week's worth of hacking RE4 models, assets, and behaviors into a totally different engine, which was written from the ground up to target the DC's unique hardware. If one (albeit extremely talented and accomplished) dude did this as a tech demo with a general-purpose DC engine in a week... Imagine what a well-funded team from Capcom could've done with support from Sega, had the Dreamcast stuck around and received an official port...
3:32

Today, PH3NOM brings us the historic gaming blasphemy to end all blasphemies... A little tech demo of a scene from Resident Evil 4 recreated within the PH3NOM engine... RUNNING ON THE SEGA DREAMCAST!!!! Here is a direct hardware capture of me playing on a stock DC, recorded with just a cheap-ass HDMI cable being fed into a cheap-ass USB capture card... admittedly after maybe 15 minutes of practicing to not embarrass myself. 🤣 I am so beyond impressed, though, at what I'm seeing from PH3NOM, after simply a week's worth of hacking RE4 models, assets, and behaviors into a totally different engine, which was written from the ground up to target the DC's unique hardware. If one (albeit extremely talented and accomplished) dude did this as a tech demo with a general-purpose DC engine in a week... Imagine what a well-funded team from Capcom could've done with support from Sega, had the Dreamcast stuck around and received an official port...

Falco Girgis

25,624 görüntüleme • 3 ay önce

Been optimizing my ASS OFF now that jnmartin has pushed all of his progress on his Star Fox 64 Sega Dreamcast port to a private GitHub repo to collaborate with a bunch of us DC devs before release. MAN this thing is HIGHLY optimized already... We're essentially running a high-level emulator for the N64's RSP coprocessor, doing graphics transforms, matrix math, and display list conversions not only on the main SH4 CPU, but also sitting atop a high-level OpenGL driver, in real-time. Not only that, but once again, we're doing all audio synthesis and mixing also on the main SH4 CPU, so this thing is doing a literal asston on the main CPU with what might seem like a relatively straightforward port. 99% of the time, everything runs flawlessly, but when you drop a bomb on a shitfest of enemies in a densely populated area, as with the N64 original, the FPS can dip momentarily. Here's a direct hardware capture of me testing a new SH4 optimized routine out for gainz on my Sega Dreamcast... this mofo is meant be used for one-off 3D vector transforms by a single matrix which has not been preloaded into the XMTRX FP register matrix back-bank. Rather than doing a full 4x4 load on the matrix just to do a single 4D transform via the FTRV instruction, we're simply peforming 3 3D dot products against a single 3D vector, allowing us to pipeline the loads, dot products, and store operations better than doing a load all at once followed by a transform, and we aren't wasting a lane on the FPU for a 0.0f W component!
1:14

Been optimizing my ASS OFF now that jnmartin has pushed all of his progress on his Star Fox 64 Sega Dreamcast port to a private GitHub repo to collaborate with a bunch of us DC devs before release. MAN this thing is HIGHLY optimized already... We're essentially running a high-level emulator for the N64's RSP coprocessor, doing graphics transforms, matrix math, and display list conversions not only on the main SH4 CPU, but also sitting atop a high-level OpenGL driver, in real-time. Not only that, but once again, we're doing all audio synthesis and mixing also on the main SH4 CPU, so this thing is doing a literal asston on the main CPU with what might seem like a relatively straightforward port. 99% of the time, everything runs flawlessly, but when you drop a bomb on a shitfest of enemies in a densely populated area, as with the N64 original, the FPS can dip momentarily. Here's a direct hardware capture of me testing a new SH4 optimized routine out for gainz on my Sega Dreamcast... this mofo is meant be used for one-off 3D vector transforms by a single matrix which has not been preloaded into the XMTRX FP register matrix back-bank. Rather than doing a full 4x4 load on the matrix just to do a single 4D transform via the FTRV instruction, we're simply peforming 3 3D dot products against a single 3D vector, allowing us to pipeline the loads, dot products, and store operations better than doing a load all at once followed by a transform, and we aren't wasting a lane on the FPU for a 0.0f W component!

Falco Girgis

36,911 görüntüleme • 8 ay önce

WHOO!!!! This is an actual hardware capture of Michael Fadely's INCREDIBLE port of #SonicMania to the Sega #Dreamcast, compiled with the latest SH-ELF-GCC14.1.0 toolchain, running on the tip of the KallistiOS SDK's master branch, streaming in assets from the virtual filesystem over the network, capturing stdout/stderr from the DC! Running like a boss! We got Michael Fadely showing us around the app-level code he beautifully ported, me on SDK/OS duty, making sure we didn't break anything with all of the new features and commits, and Oleg Endo on compiler duty, since we found an ICE with GCC14 getting pissed off over some stateful C++ lambda in the render path... Eggman is so screwed. DREAMCAST COMMUNITY, ASSEMBLE!!! #retrogaming #gamedev #cpp
1:03

WHOO!!!! This is an actual hardware capture of Michael Fadely's INCREDIBLE port of #SonicMania to the Sega #Dreamcast, compiled with the latest SH-ELF-GCC14.1.0 toolchain, running on the tip of the KallistiOS SDK's master branch, streaming in assets from the virtual filesystem over the network, capturing stdout/stderr from the DC! Running like a boss! We got Michael Fadely showing us around the app-level code he beautifully ported, me on SDK/OS duty, making sure we didn't break anything with all of the new features and commits, and Oleg Endo on compiler duty, since we found an ICE with GCC14 getting pissed off over some stateful C++ lambda in the render path... Eggman is so screwed. DREAMCAST COMMUNITY, ASSEMBLE!!! #retrogaming #gamedev #cpp

Falco Girgis

139,578 görüntüleme • 2 yıl önce

Some interesting Sega Dreamcast science I've been doing on the side recently... Here's a direct hardware capture of a tech demo of Bruce's aptly-named "Dreamcast Mesh Shit," featuring assets from... Uhhh... I don't even know where he jacked these from... 😂 ANYWAY, the main thing I've been working on is optimizing the skinning for the animations using my SH4ZAM fast math and linear algebra library, which can easily become one of the primary bottlenecks when running the late 6th generation games on the Dreamcast. My work has been mostly to allow the vast majority of the skinning math to occur in the SH4's XMTRX back-bank of floating-point registers, rather than having to round-trip to and from memory for every operation... Just shaved off a few hundred microseconds per mesh this way, with a lot more room to go. Once I have this stuff SOLID, I plan to bring it back to our DC port of Grand Theft Auto: Vice City, where skinning was one of the major contributors to FPS dips.
0:34

Some interesting Sega Dreamcast science I've been doing on the side recently... Here's a direct hardware capture of a tech demo of Bruce's aptly-named "Dreamcast Mesh Shit," featuring assets from... Uhhh... I don't even know where he jacked these from... 😂 ANYWAY, the main thing I've been working on is optimizing the skinning for the animations using my SH4ZAM fast math and linear algebra library, which can easily become one of the primary bottlenecks when running the late 6th generation games on the Dreamcast. My work has been mostly to allow the vast majority of the skinning math to occur in the SH4's XMTRX back-bank of floating-point registers, rather than having to round-trip to and from memory for every operation... Just shaved off a few hundred microseconds per mesh this way, with a lot more room to go. Once I have this stuff SOLID, I plan to bring it back to our DC port of Grand Theft Auto: Vice City, where skinning was one of the major contributors to FPS dips.

Falco Girgis

49,078 görüntüleme • 4 ay önce

jnmartin and I just spent the last 12 hours straight locked into an epic tag-team, binge-coding session. We've decided to return to perfect our port of Mario Kart 64 to the Sega Dreamcast, bringing with us all of the skills, knowledge, and tools at our disposal that we gained from every port we've been involved with since we originally released MK64 DC to the public. 1) jnmartin has just completely redone the audio synthesis and mixing code. It was originally emulating the Nintendo 64's RSP in software, on our CPU, and wound up being a total resource hog, despite us going to hell and back again, substantially boosting its performance by vectorizing it with our SH4 SIMD instructions. 2) Now that the audio is actually offloaded to the AICA, we can leverage its DSP to put back in effects such as reverb and echo that we simply didn't have the CPU budget to implement before... so the overall audio quality of the port will be SIGNIFICANTLY improved. 3) jnmartin has been working on many small bugfixes, such as the near-Z clipping edge-cases that would cause corrupted triangles to draw over the players' screens sometimes in 3 and 4 player modes. 4) jnmartin just kicked GLdc--our OpenGL 1.1 driver, built atop of KallistiOS--to the curb and has instead implemented a bare-metal renderer that raw-dogs KOS's lowest-level PVR GPU driver directly, giving us more control and better performance within the renderer. 4) I just implemented support for playing with the Sega Dreamcast keyboard peripheral as a controller, partially as a flex, and partially because jnmartin kept complaining that he only had 3 controllers for testing... 🤣 4) I have taken my entire accelerated math and linear algebra library, SH4ZAM--which was born just after this port was originally released--back with me this time and am optimizing every freaking thing I can get my hands on with it. Every matrix multiplication, vector transform, memcpy-call, and scalar or trig routine is getting swapped out for the corresponding hand-optimized, meticulously benchmarked, and rigorously unit-tested equivalent within SH4ZAM, which now ships as part of kos-ports. As you can see from this series of direct hardware captures, overlaid with the terminal window which was capturing the FPS logging reports from my actual Sega Dreamcast, the performance is now SIGNIFICANTLY better than it was previously, and it already ran on-par or slightly better than the N64 original under most circumstances! Sooo many GAINZ to be had! 💪
1:08

jnmartin and I just spent the last 12 hours straight locked into an epic tag-team, binge-coding session. We've decided to return to perfect our port of Mario Kart 64 to the Sega Dreamcast, bringing with us all of the skills, knowledge, and tools at our disposal that we gained from every port we've been involved with since we originally released MK64 DC to the public. 1) jnmartin has just completely redone the audio synthesis and mixing code. It was originally emulating the Nintendo 64's RSP in software, on our CPU, and wound up being a total resource hog, despite us going to hell and back again, substantially boosting its performance by vectorizing it with our SH4 SIMD instructions. 2) Now that the audio is actually offloaded to the AICA, we can leverage its DSP to put back in effects such as reverb and echo that we simply didn't have the CPU budget to implement before... so the overall audio quality of the port will be SIGNIFICANTLY improved. 3) jnmartin has been working on many small bugfixes, such as the near-Z clipping edge-cases that would cause corrupted triangles to draw over the players' screens sometimes in 3 and 4 player modes. 4) jnmartin just kicked GLdc--our OpenGL 1.1 driver, built atop of KallistiOS--to the curb and has instead implemented a bare-metal renderer that raw-dogs KOS's lowest-level PVR GPU driver directly, giving us more control and better performance within the renderer. 4) I just implemented support for playing with the Sega Dreamcast keyboard peripheral as a controller, partially as a flex, and partially because jnmartin kept complaining that he only had 3 controllers for testing... 🤣 4) I have taken my entire accelerated math and linear algebra library, SH4ZAM--which was born just after this port was originally released--back with me this time and am optimizing every freaking thing I can get my hands on with it. Every matrix multiplication, vector transform, memcpy-call, and scalar or trig routine is getting swapped out for the corresponding hand-optimized, meticulously benchmarked, and rigorously unit-tested equivalent within SH4ZAM, which now ships as part of kos-ports. As you can see from this series of direct hardware captures, overlaid with the terminal window which was capturing the FPS logging reports from my actual Sega Dreamcast, the performance is now SIGNIFICANTLY better than it was previously, and it already ran on-par or slightly better than the N64 original under most circumstances! Sooo many GAINZ to be had! 💪

Falco Girgis

13,089 görüntüleme • 1 ay önce

FINALLY time for the big announcement everyone has been begging and waiting for... Here's a VERY EARLY direct hardware capture of Mario Kart 64... RUNNING ON THE SEGA DREAMCAST, of course! This game was literally just BARELY decompiled the other day, with a codebase that is still quite married to the Nintendo 64 platform... but this didn't stop jnmartin: the dark coding wizard who brought us a dynamically lit and bump mapped Doom 64 and Wipeout running at >100FPS on the DC! What you're seeing is the insane progress made by one man in just 3 weeks. As is to be expected, there are all kinds of visual glitches and rendering artifacts, the framerate is all over the place, and there's no audio yet... which is totally typical of any ambitious DC port in the early stages. The DC build wouldn't even get past the menu screen without crashing or running out of RAM until just a few DAYS ago, yet here it is, every level playable WITH multiplayer support already on the DC! Even in this early stage, you can already see the game benefiting from the PVR's crisp 480p output... Each players' little viewport window in 4 player mode is the same resolution as the entire screen was on the N64! Stay tuned for future updates as jnmartin continues his work to bring this classic to our little white box of Dreams!
3:29

FINALLY time for the big announcement everyone has been begging and waiting for... Here's a VERY EARLY direct hardware capture of Mario Kart 64... RUNNING ON THE SEGA DREAMCAST, of course! This game was literally just BARELY decompiled the other day, with a codebase that is still quite married to the Nintendo 64 platform... but this didn't stop jnmartin: the dark coding wizard who brought us a dynamically lit and bump mapped Doom 64 and Wipeout running at >100FPS on the DC! What you're seeing is the insane progress made by one man in just 3 weeks. As is to be expected, there are all kinds of visual glitches and rendering artifacts, the framerate is all over the place, and there's no audio yet... which is totally typical of any ambitious DC port in the early stages. The DC build wouldn't even get past the menu screen without crashing or running out of RAM until just a few DAYS ago, yet here it is, every level playable WITH multiplayer support already on the DC! Even in this early stage, you can already see the game benefiting from the PVR's crisp 480p output... Each players' little viewport window in 4 player mode is the same resolution as the entire screen was on the N64! Stay tuned for future updates as jnmartin continues his work to bring this classic to our little white box of Dreams!

Falco Girgis

55,523 görüntüleme • 1 yıl önce

SHE'S DONE!!! Mario Kart 64 for the Sega Dreamcast is officially ready for public consumption, so here's a full 6+ minute video of gameplay, captured straight from my actual DC! Jnmartin has done it again! The footage you are watching shows every GP course in the game, including multiplayer footage as well. Yes, you can also save and load ghost files from the VMU! As this is our first release, I'm sure you will run into a minor bug here or there, especially given neither one of us could stress test 4 player very effectively using our hands and feet to drive... So be sure to open tickets for any minor issues you find... assuming you're playing on REAL HARDWARE. I can already tell you right now, emulators are having issues with this one! This was my first time getting to directly contribute to a jnmartin N64 port, and it was an absolute honor for me to be involved with his incredible work. There is nobody else who I have ever met with the cross-architecture knowledge of BOTH the Sega Dreamcast and Nintendo 64, combined with the raw grit, tenacity, and attention to detail required to pull this off and do the source material justice. Not only did I get to take my SH4ZAM library for DC math gainz out for a ride with MK64, but I also brought some new routines back from MK64 so everyone can use them! Finally, I got to be involved in laying the foundation for future jnmartin N64 ports, now that we have an optimized, accelerated audio and video back-end for various libultra functionality, including Fast3D. You can already see how much this has benefited future work based on how quickly jnmartin was able to get StarFox 64 up and running on DC... The man doesn't sleep, no. lol. I just wanted to thank everyone so much for the continued enthusiasm and support behind these ports. The support for our work and the Sega Dreamcast means the world to us! Thanks for helping to keep the dream alive! For instructions on how to build yourself a burnable CDI image or a DreamShell ISO for either your DC's SD card or IDE drive, please follow the README on the repository: NOTE: Windows users will need DreamSDK to build. My last-minute build fixes for DreamSDK are in this WIP branch here, which will probably be merged into the main branch tomorrow when jnmartin wakes up:
6:11

SHE'S DONE!!! Mario Kart 64 for the Sega Dreamcast is officially ready for public consumption, so here's a full 6+ minute video of gameplay, captured straight from my actual DC! Jnmartin has done it again! The footage you are watching shows every GP course in the game, including multiplayer footage as well. Yes, you can also save and load ghost files from the VMU! As this is our first release, I'm sure you will run into a minor bug here or there, especially given neither one of us could stress test 4 player very effectively using our hands and feet to drive... So be sure to open tickets for any minor issues you find... assuming you're playing on REAL HARDWARE. I can already tell you right now, emulators are having issues with this one! This was my first time getting to directly contribute to a jnmartin N64 port, and it was an absolute honor for me to be involved with his incredible work. There is nobody else who I have ever met with the cross-architecture knowledge of BOTH the Sega Dreamcast and Nintendo 64, combined with the raw grit, tenacity, and attention to detail required to pull this off and do the source material justice. Not only did I get to take my SH4ZAM library for DC math gainz out for a ride with MK64, but I also brought some new routines back from MK64 so everyone can use them! Finally, I got to be involved in laying the foundation for future jnmartin N64 ports, now that we have an optimized, accelerated audio and video back-end for various libultra functionality, including Fast3D. You can already see how much this has benefited future work based on how quickly jnmartin was able to get StarFox 64 up and running on DC... The man doesn't sleep, no. lol. I just wanted to thank everyone so much for the continued enthusiasm and support behind these ports. The support for our work and the Sega Dreamcast means the world to us! Thanks for helping to keep the dream alive! For instructions on how to build yourself a burnable CDI image or a DreamShell ISO for either your DC's SD card or IDE drive, please follow the README on the repository: NOTE: Windows users will need DreamSDK to build. My last-minute build fixes for DreamSDK are in this WIP branch here, which will probably be merged into the main branch tomorrow when jnmartin wakes up:

Falco Girgis

63,357 görüntüleme • 11 ay önce