bomabomabomaboma 0f2980de44 [GPU] Apply gradient exponent bias during fetch that's per-axis
The fetch constant carries independent signed exponent biases in [-16, 15] for the horizontal and vertical LOD gradients. Scale the H and V gradients by exp2(lod + bias_h) and exp2(lod + bias_v) respectively in the computed LOD sample path. getCompTexLOD keeps returning the raw queried LOD, treating the adjustment like the fetch-constant LOD bias, which is also not folded into it. Zero, the common case, is a no-op.

On the cube implicit-LOD path, where no explicit gradients exist to scale, the greater of the two biases is added to the LOD bias instead - exact when both are equal, erring towards a blurrier mip otherwise.

Co-Authored-By: Herman S. <429230+has207@users.noreply.github.com>
2026-08-04 10:34:42 +02:00
2026-06-24 23:24:42 -07:00
2026-05-12 22:45:56 +02:00
2026-03-27 11:17:55 +09:00
2025-11-20 03:53:43 -08:00
2025-11-20 03:53:41 -08:00
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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Readme BSD-3-Clause 71 MiB
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