bomabomabomaboma 2ddc5ef737 [GPU] 8_8_8_8_GAMMA resolve update; fix unsigned-biased fetch scaling
8_8_8_8_GAMMA resolve update:
This hopefully settles how safe resolves of gamma RTs are handled, because it's almost certainly not settled by destination.

It's now believed that gamma sources seen by resolve are always being decoded, and that's a decode that's keyed only on the source format, where every destination is fed linear values, and any encode is now just removed rather than conditional.

These sources are re-alised as plain before resolving, which is the same exact idea that preserves float 2_10_10_10 bits through a resolve too.

Integer texture fetch scaling update:
Unsigned-biased components were using the regular unsigned scale even though the conversion had remapped the sample [0, 1] to [-1, 1].

Scale bits data is now increased from 5 to 6 bits and use the new bit to mark unsigned-biased components. DXBC/SPIR-V use half of the unsigned scale and add a -0.5 offset.

This fixes post-processing in 415608B2 and will likely improve other titles w/ EDRAM transports through affected textures, but perhaps not so dramatically.
2026-07-30 07:34:28 +02:00
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2025-11-20 03:53:41 -08:00

Xenia Canary - Xbox 360 Emulator

Xenia Canary is an experimental fork of the Xenia emulator. For more information, see the Xenia Canary wiki.

Come chat with us about emulator-related topics on Discord. For developer chat join #dev but stay on topic. Lurking is not only fine, but encouraged! Please check the FAQ page before asking questions. We've got jobs/lives/etc, so don't expect instant answers.

Discussing illegal activities will get you banned.

Status

Buildbot Status Releases
Canary (🪟, 🐧) CI Codacy Badge LatestAllOld

Experimental Netplay

Buildbot Status Releases
Windows Codacy Badge Latest

Quickstart

See the Quickstart page.

FAQ

See the frequently asked questions page.

Game Compatibility

See the Game compatibility list for currently tracked games, and feel free to contribute your own updates, screenshots, and information there following the existing conventions.

Building

See building.md for setup and information about the xb script. When writing code, check the style guide and be sure to run clang-format!

Contributors Wanted!

Have some spare time, know advanced C++, and want to write an emulator? Contribute! There's a ton of work that needs to be done, a lot of which is wide open greenfield fun.

For general rules and guidelines please see CONTRIBUTING.md.

Fixes and optimizations are always welcome (please!), but in addition to that there are some major work areas still untouched:

See more projects good for contributors. It's a good idea to ask on Discord and check the issues page before beginning work on something.

Disclaimer

The goal of this project is to experiment, research, and educate on the topic of emulation of modern devices and operating systems. It is not for enabling illegal activity. All information is obtained via reverse engineering of legally purchased devices and games and information made public on the internet (you'd be surprised what's indexed on Google...).

Description
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