PPSSPP UWP ARM32 only
Source | Original Project

Target

Legacy support:

Build 10586+
DirectX Feature Level 11, 9.3 (~9.1)

Overview:

PPSSPP is PSP emulator by Henrik Rydgård

XBOX (x64)

Please visit XBOX DevStore, I host only ARM32 releases

the major part of the UWP improvements were merged already into the official repo.

ARM64 or Latest

This repo for ARM32, legacy support only
Refer to the official repo for ARM64 Click here
Please don't ask or contact me for other than ARM32
This repo is not meant to be up-to date fork (nor redistribution)

UWP Support

Supported by UWP2Win32

What's new?

Choose new Memory stick location (anywhere)
Browse folder without any problem
Navigate between folders internally
Install homebrew (zip) from anywhere
Use and type into text fields (even on touch devices)
Use network features like remote play
Start games by launching the file directly

Official?

Major part of the UWP improvements already merged in the official repo except for the stuff that related to legacy hardware

Phase 1 (PR) [Merged]

Phase 2 (PR) [Merged]

Support

The whole credits for the good performance goes to Henrik and PPSSPP contributors for keeping the project core compatible with older builds, what I did is a little comparing to the main work

If you found this release helpful and enjoy it, consider supporting the project at the link below:

https://www.ppsspp.org/buygold/

Build

This more like my test lab, you mostly will not be able to build it for other platforms as I'm not aware to organize things

many stuff used as extern vars for quick and easy test, and I moved some things to another places specificly in 1.15.5.

Building [1.15.5]

You need SDKs: 18362, 14393 and 22621 (must)
Use Visual Studio 2022
Go to UWP
Open PPSSPP_UWP.sln
Tests made on Release and UWP Gold
Build

Building [1.17.1]

Same requirements except it's ready for 10586
It has only ARM legacy configuration
Just select the legacy config and build

Build Legacy

To build PPSSPP for 10586

You need as extra SDKs: 19041
Ensure CommonUWP set at 19041 not 22621
Ensure PPSSPP_UWP set at 19041 not 22621
Set CommonUWP min target to 10240 or 10586
Set PPSSPP_UWP min target to 10240 or 10586
Add Preprocessors HTTPS_NOT_AVAILABLE to CommonUWP
At CommonUWP ensure to exclude ext\naett from build
Build using UWP Gold 14393 configuration only

If you're attempting to make your own from the official source, as extra:

Ensure Common/Render/Text/draw_text_uwp.cpp has same changes I made
At Common\Thread\ThreadUtil.cpp disable SetThreadDescription(..);
Replace anything with FromApp with older Win32 API (Except memory functions)
At App.cpp -> InitialPPSSPP() ensure ->InstalledPath replaced by ->InstalledLocation->Path
Remove HDMI stuff from UWP/Common/DeviceResources.cpp
Integrating the Storage Layer I made will take much effort on older builds

Shader Compatibility

For devices such as Lumia 950/950XL & Elite X3 those support DX Feature level 11.x

All other older devices supports only 9.3, surface support 9.1

and this will cause the games not to work at all on older devices,

I don't have good time to point the exact code lines, but here some tips:

Ensure to remove assert that prevent 9.3 to load
Remove or disable vertexIndex 9.3 don't support that
Feature level 9.3 don't support bitwise, ensure to fix all shaders do that
Some shader already has condition for bitwise using bitwiseOps
You can simply force bitwiseOps to false
but there are places not covered with this and has no alternative which need to be fixed
Turn on D3D debug layer and ppsspp debug log and fix other shader problems one by one
Use multiple files to test, not all games use the same shaders
I made some changes but they are not complete to make 9.3 work in the same way 11 do

and be aware, if you have device support feature level 11, then don't use 9.3

the modification above will cause slow down, I made them based on my very basic experience

Conclusion

If this was running with OpenGLES (not ANGLE) would be 2~4 times faster

I don't know much about graphic APIs but from general look DirectX made it worse

specificly with the backward options (feature level 9.1 & 9.3)

I tried a lot, you will have to reduce some processes, ok that doesn't work well if I will play with less visuals

It require a lot of time with good experience to write the shaders and adjust some processes

Get 950 and equal hardware as Android and test to see what I mean (Regardless to the memory restrictions).

In anyway I exposed some shader options to the menu for easy testing (DirectX Shader section).

Important

This project for legacy support, if something isn't working on your modern hardware

please don't open issue for it, I support only ARM32

Credits

Henrik Rydgård PPSSPP Emulator

Bashar Astifan (UWP Storage manager and other UWP improvements)

basharast/PPSSPP-UWP-ARM