Dolphin on the pi 4?

[a.ginger.turtwig]

The pi4 was Just announced It has a Broadcom BCM2711 at 1.5ghz and 1,2, or 4gb lpddr4 ram. Any chance of it running low end games at 480p?

[Helios]

If it's still shipping a 32 bit userspace, nope.

If it finally ships a 64 bit userspace, possibly, but virtually every game is going to be obnoxiously unplayable.

Might be able to play a few stages with 2 fighters in Melee though

[mstreurman]

(06-24-2019, 06:08 PM)a.ginger.turtwig Wrote: The pi4 was Just announced It has a Broadcom BCM2711 at 1.5ghz and 1,2, or 4gb lpddr4 ram. Any chance of it running low end games at 480p?

Nah... not gonna happen... the current Pi 3B+ doesn't have enough juice to play most n64/PlayStation1 games. So the Pi4 won't be able to either (I guess) on top of that... it is an arm based device.

[George Spiggott]

Pi3B+ runs PS1 just fine. It struggles with N64 (and Dreamcast) as you rightly say.

[bomblord]

(06-24-2019, 06:48 PM)Helios Wrote: If it's still shipping a 32 bit userspace, nope.

If it finally ships a 64 bit userspace, possibly, but virtually every game is going to be obnoxiously unplayable.

Might be able to play a few stages with 2 fighters in Melee though

It's a 64 bit a72 with 4GB of RAM and the new raspbian is based on Debian Buster so it seems like it should be a 64 bit userspace (I've been pouring over reviews and cannot find a confirmation either way frustratingly).

Also it should have a more powerful CPU than the Shield (can't find a direct comparison) the main problem I could see is the GPU which I know literally nothing about.

CPU benchmark


Official specs are as follows
- A 1.5GHz quad-core 64-bit ARM Cortex-A72 CPU (~3× performance)
- 1GB, 2GB, or 4GB of LPDDR4 SDRAM
- Full-throughput Gigabit Ethernet
- Dual-band 802.11ac wireless networking
- Bluetooth 5.0
- Two USB 3.0 and two USB 2.0 ports
- Dual monitor support, at resolutions up to 4K
- VideoCore VI graphics, supporting OpenGL ES 3.x
- 4Kp60 hardware decode of HEVC video

At least one review managed a 1.75GHZ overclock on the CPU and a 20% overclock on the GPU https://www.tomshardware.com/reviews/raspberry-pi-4-b,6193.html

[Helios]

It's not faster than a shield TV. Don't worry.

[bomblord]

(06-25-2019, 03:03 AM)Helios Wrote: It's not faster than a shield TV. Don't worry.

Purely from a CPU perspective why wouldn't it be? It's obvious the GPU isn't going to be comparable but we're talking a quad core a72 Arm v8 setup vs a quad core Cortex A57 at only a slightly higher clock. If you overclock the CPU to 1.75ghz it should easily outperform the Shield TV's CPU.

[mstreurman]

(06-25-2019, 03:22 AM)bomblord Wrote: Purely from a CPU perspective why wouldn't it be? It's obvious the GPU isn't going to be comparable but we're talking a quad core a72 Arm v8 setup vs a quad core Cortex A57 at only a slightly higher clock. If you overclock the CPU to 1.75ghz it should easily outperform the Shield TV's CPU.

The issue isn't necessarily the CPU but the GPU... as the Shield TV uses "real" OpenGL and any other ARM device uses OpenGL ES which is a subset of OpenGL that miss extensions that Dolphin needs for better performance.

[bomblord]

(06-25-2019, 03:30 AM)mstreurman Wrote: The issue isn't necessarily the CPU but the GPU... as the Shield TV uses "real" OpenGL and any other ARM device uses OpenGL ES which is a subset of OpenGL that is extensions that Dolphin needs for better performance.

Ahh so he was just talking about Dolphin performance in general. Looking into it it indeed uses OpenGL ES3. It does have a completely open source graphics driver though so that's nice.

[Helios]

Also, it still isn't GLES 3.2, only 3.0

So a lot of games will be flat out broken that aren't just slow.