GameDB: Atelier Iris (SLUS-21113) fixes

[secondsabre]

Description of Changes

Assorted graphics tweaks to fix sprite and FMV issues

Rationale behind Changes

Fixes assorted lines around/through sprites when upscaling. Includes confirmed fixes from https://wiki.pcsx2.net/Atelier_Iris:_Eternal_Mana, and matches fixes with games with similar engine from same developer (SLES-54385, SLPM-65985, SLUS-21327)
When upscaling:

• If Texture Preloading is set to Full or Partial and HW Renderer used for FMVs, an error is generated that the hash cache has used too much VRAM and has been disabled.
• • If Texture Preloading is set to None, small black lines intermittently appear around sprites in-game, particularly if they're moving
• Using HW Renderer causes FMVs to have black horizontal lines running through them
• • Using Round Sprite at Half mitigates this slightly, Full almost completely erases it
• Using SoftwareRendererFMVHack bypasses both the black lines in FMVs and hash cache errors, and allows for Texture Preloading to be enabled to prevent other black line/offset issues.

Suggested Testing Steps

[github-actions]

Thank you for submitting a contribution to PCSX2

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Please be patient until this happens. In the meantime if you'd like to confirm the builds are passing, you have the option of opening a PR on your own fork, just make sure your fork's master branch is up to date!

[secondsabre]

Oh man, forgot to add screens and stuff to show the diffs.

FMV:

HW Renderer

HW Renderer w/ Round Sprite = Full

SW Renderer
(sorry for the change in quality here, realized that built-in screenshot doesn't work when using SW Renderer, so had to do a manual screencap)

Texture Preloading:

Texture Preloading= None
(note the small black lines that flicker around the moving sprites at bottom-center)

texture.cache.none.mp4

Texture Preloading = Full
(small black lines all gone)

texture.cache.full.mp4

Round Sprite:

Round Sprite = Off

Round Sprite = Half

Round Sprite = Full

[secondsabre]

@JordanTheToaster Thanks for your help and patience while I stumble through this, appreciate you!

[JordanTheToaster]

@JordanTheToaster Thanks for your help and patience while I stumble through this, appreciate you!

You're good don't worry about it :)