Add ps vita support

[Cpasjuste]

Hi,

I think i have now reached a point where it's ok to merge with mainline. There is a very few modifications to stock sources (sdl-event: fix cursor lag on some platform, posix-fs, posix-main and surfacesdl-graphics with psp2 defines). By the way, i think the code in surfacesdl-graphics (for other sdl2 platform than the ps vita) could maybe be improved by directly writing to the SDL2 texture pixels (LockTexture) instead SDL2 surface -> SDL2 texture, and maybe moving to SDL2/GL for shader effects instead software scaling/effects. I may take a look if i ever find the time.

Else thanks for this awesome application :)

[Cpasjuste]

Hi,

Thanks for the reports/tips. It may take me while to rebase this as I'm not used to "advanced" git functions, and my time is very limited. I'll tr try do do that next week !

[sev-]

If you provide me with access to your fork, I Candi the rebase for you. Also, you may just follow the step by step guidance provided by GitHub, talking about forks

[Cpasjuste]

Hi @sev- , in fact this would be very cool if its not too much work for you. I'm sure it would take me a lot of time to do so. This week I will fix the problems (bad tabs/spaces and other suggestions) then we can go further together. I'll let you know when its done

[rsn8887]

I just updated my local PR, PR#11 on Cpasjuste's master branch https://github.com/Cpasjuste/scummvm/pull/11
that features many enhancements (also some refactoring). I think my PR should become part of this PR before rebasing this because it enhances the shader selection etc. It

• adds a universal shader menu that is hidden unless the platform supports shaders (see comments at https://github.com/Cpasjuste/scummvm/pull/11 )
• the menu allows PSP2 users to select their favorite shader in addition to any software scaler they might like
• The menu does not add any platform code to the COMMON namespace.
• It makes use only of three new system function getSupportedShaders, setShader, getShader that mirror the GraphicsMode selection functions.
• It allows any platform to implement HW shaders in addition to software scalers (currently the PSP2 port is the only one using these functions), and the menu is displayed only if kFeatureShaders is set.

See https://github.com/Cpasjuste/scummvm/pull/11
for more detailed comments.

[sev-]

When do you think it will be a good time to rebase?

[rsn8887]

sev the conflicting files are because of the addition of the new shader menu (visible currently only on Vita). Can I help to merge them correctly? Is there a way to "pre-merge" them? I am not sure how.

[sev-]

Well, the whole branch needs to be rebased. The process is pretty straightforward and is described here: https://help.github.com/articles/syncing-a-fork/

Now, on your case. You'd better move the PR to a fork:

1. git checkout -b ps-vita
2. git push origin ps-vita:ps-vita
3. Reset master to upstream.

Now sync with the upstream

1. Add upstream: git remote add upstream https://github.com/scummvm/scummvm.git
2. Fetch upstream master: git fetch upstream
3. Checkout your master: git checkout master
4. Merge upstream: git merge upstream/master
5. Rebase your fork: git rebase master

Now it will stop on the merge conflicts, and you will need to fix them.

If you need help, tell.

[wjp]

Cleaning the history of this PR up should probably wait until #911 and #912 are reviewed and merged, as they will cause additional conflicts.

[rsn8887]

I made @sev- 's suggested changes to my branch here: rsn8887@fd0a478. Due to many many merge conflicts and other problems with rebasing this, I think we should just merge a "single-commit" version of the whole Vita branch, such as in my branch here https://github.com/rsn8887/scummvm/tree/mastermerged20170228.

That will be easier to merge (no rebase necessary). Concerning the loss of history, there's not that much value in the history in the commit messages so far since it is all basically "initial Vita branch." It will still be a small single commit with 109 files changed, it is really quite graspable.

I will wait until #911 and #912 have been merged before proceeding, since those will remove some duplicate similar changes in the Vita branch.

After that I will re-generate the "single-commit" Vita branch and make a separate PR for it.

[rsn8887]

Since this is more or less un-rebaseable without going through every single merge-conflict over ages, I made a single-commit version of this here: #915

[sev-]

Closing the the favor of #915