two main issues:
shader_environment.cpp
Support Mesa nv50_ir-compiled homebrew fragment shaders
Mesa nv50_ir (used by NZP-Switch via libdrm_nouveau) emits Maxwell SASS that differs from NVN in two ways our shader pipeline didn't account for, causing "infinite" loops during shader scanning.
How? TryFindSize() previously detected end-of-shader only via NVN's "BRA $-1" self-branch trailer (SELF_BRANCH_A/B). Mesa-compiled shaders end with an unconditional @PT EXIT and emit no trailer, so scanning ran past the shader and looped to MAXIMUM_SIZE.
Fix: Added a secondary match against @PT EXIT T (opcode 0xE30, predicate PT, flow T) as a fallback terminator. The mask is estrictive enough to reject predicated EXITs, conditional-flow EXITs, and sched control words, so well-formed NVN shaders see no ehavior change (their single @PT EXIT immediately precedes BRA $-1, and both detections return the same size).
load_store_attribute.cpp + attribute.h
IPA's is_perspective check only applied the ×position_w correction for IR::IsGeneric() attributes, and used a per-component SPH lookup. Two failure modes followed:
1. Mesa fragment shaders read varyings via legacy attribute slots
(ColorFrontDiffuse, FixedFncTexture, FogCoordinate) which are
remapped to generic varyings later by ConvertLegacyToGeneric. At
IPA-translation time they're still legacy, so IsGeneric() was
false and the inject was skipped — but the resulting GLSL/SPIR-V
varying was Smooth (perspective-correct), and the SASS still
issued its manual perspective dance via MUFU.RCP(ATTR_W)+FMUL,
compounding an extra ×clip_w factor. NZP fog (eye_z distance
varying) ended up as eye_z⁴×density² instead of eye_z²×density²,
saturating fog to white everywhere.
2. Even for legacy attrs that should inject, Mesa stores them in two formats selected by the IPA's interpolation_mode field:
Pass/Multiply/Constant → attr/w (perspective); inject ×position_w
Sc (ScreenLinear) → raw attr; do NOT inject
Unconditionally injecting for Sc dims vertex colors by 1/clip_w because there's no SASS multiplier to round-trip it back.
Fix: extend the IPA correction path to also fire on IsLegacyAttribute(), gated on interpolation_mode != Sc. While here, the generic-path check is widened from per-component to vector-level (first non-Unused PixelImap, with all-Unused fallthrough treated as Perspective) so it matches the GLSL interpolation qualifier picked by CollectInterpolationInfo — this fixes the same all-zeroed-imap case Mesa exposes for explicit generics. IsLegacyAttribute moved from translate_program.cpp's anonymous namespace into attribute.h next to IsGeneric so IPA can reach it.
Tested on NaziZombies:Portable (Switch homebrew): fog now matches real
hardware, vertex-colored geometry (hand, gun, decals) renders correctly.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4012
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
This PR introduces an optional Legacy Rescale Compatibility Mode that restores the previous rescale‑pass behavior for titles that rely on its quirks. While the new rescale logic is generally more correct, some games exhibit visual issues that the legacy behavior incidentally avoids.
Enabling this mode can mitigate line artifacts on AMD GPUs and reduce grey‑texture flickering on Nvidia GPUs in Luigi’s Mansion 3. This is a compatibility workaround rather than a full fix, and should only be used for titles affected by these rare edge‑case rendering problems.
Original Logic from MaranBR
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3582
Co-authored-by: John <john@eden-emu.dev>
Co-committed-by: John <john@eden-emu.dev>
mainly doing this to reduce memory footprint; we all know how nice ankerl::unordered_dense is
in theory 4x faster - in practice these maps arent that "hot" anyways so not likely to have much perf gained
i just want to reduce mem fragmentation to ease my porting process, plus it helps other platforms as well (ahem weak Mediatek devices) :)
Signed-off-by: lizzie <lizzie@eden-emu.dev>
Co-authored-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3442
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This fixes weird lines at 1x resolution without impacting performance in some titles.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3385
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Co-authored-by: MaranBr <maranbr@outlook.com>
Co-committed-by: MaranBr <maranbr@outlook.com>
The issue occurs because shaders generated without RescalingPass are too simple, triggering driver optimization bugs on some GPUs.
Fixes rendering issues in Luigi's Mansion 3 and possibly other games as well.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3346
Reviewed-by: DraVee <dravee@eden-emu.dev>
Co-authored-by: MaranBr <maranbr@outlook.com>
Co-committed-by: MaranBr <maranbr@outlook.com>
ATOM should be NOP in these cases
May break games? May not break games! - But it **should** be correct to do this
Signed-off-by: lizzie <lizzie@eden-emu.dev>
Co-authored-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2907
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
SURED does NOT have a binding register and stuff, it is strictly just a binding-offset * 4
Signed-off-by: lizzie lizzie@eden-emu.dev
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2983
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
Function polymorphism where it wasn't needed? especially on tight code loops like translating code and whatnot?
You may think the compiler was fine with this but nah, it just made codegen for all those paths; I didn't check LTO but I'd assume it behaves the same (since the "black box" from most walkers suck) - basically bunch of code that isn't longer used
Also uniformly declaring all functions (i.e same args, return value) makes the entire switch statment way nicer
Signed-off-by: lizzie lizzie@eden-emu.dev
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2972
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
- Using I2F cbuf variant (packed 32x2 aka. U64)
- Code will call IAbs() if some conditions are met (signed + abs bit)
- Uh oh we don't have a variant for 64 bits!
- Fuck now we just made BAD ir code :(
Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2918
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
The compiler is very smart, I trust the compiler to make a proper decoder selector rather than rolling our own.
Probably mostly benefitted on PGO builds.
Directly affects cache recompilation times (test with pipeline shaders OFF to force shaders to rebuild :)
Also restores CCTLT so we have the full ISA (or do we? Is ISBEWR missing? - someone should run fuzzing :)
Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2915
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
Reverts the "problematic" part of the pr (swap of s64/F16x2FTZRN) + leaves a very visible comment for newcomers (since yes, disas says it should be like that but oh well)
Signed-off-by: lizzie lizzie@eden-emu.dev
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2868
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
Co-authored-by: collecting <collecting@citron-emu.org>
"The ObjectPool<Statement> was never being cleared after use. When compiling complex shaders, this would allocate gigabytes of memory, causing the emulator to run out of RAM and be killed by the operating system. This is a critical fix that prevents out-of-memory crashes on all operating systems when playing games with complex shaders."
Co-authored-by: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2606
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
Co-authored-by: Gamer64 <gamer64@eden-emu.dev>
Co-committed-by: Gamer64 <gamer64@eden-emu.dev>
I tried to simplify ISBERD a little bit, and remove unneeded data shifting, and unneeded complexity through helper functions I previously added.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2541
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: SDK Chan <sdkchan@eden-emu.dev>
Co-committed-by: SDK Chan <sdkchan@eden-emu.dev>
Compilation and CMake fixes for both Windows on ARM and clang-cl, meaning Windows can now be built on both MSVC and clang on both amd64 and aarch64.
Compiling on clang is *dramatically* faster so this should be useful for CI.
Co-authored-by: crueter <crueter@eden-emu.dev>
Co-authored-by: crueter <crueter@crueter.xyz>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/348
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
Adds the initial support for Internal Stage Buffer Entry Read - ISBERD, a mechanism used to read internal stage buffer entries with accurate per-stage synchronization. This enables more precise tracking of GPU buffer accesses, improving compatibility with games relying on fine-grained intermediate rendering stages (especially UE4 titles and post-processing heavy engines).
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/124
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This commit introduces extended support for low-precision integer casting (int8, int16) in the SPIR-V shader generation pipeline, improving compatibility and performance across both Android and PC platforms.
Co-authored-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/86
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
revert [android] Snapdragon 865 patches (#23)
Co-authored-by: Aleksandr Popovich <alekpopo@pm.me>
Reviewed-on: https://git.bixed.xyz/Bix/eden/pulls/23
Reverted due to heavy performance hits on Android with higher specifications, will be adjusted to be included in a specific build for older A6XX devices, as 855, 860, 865, 870, meanwhile it does fix critical issues with certain games crashing due to memory and VRAM usage, hits performance on SoC that can do it without this special flags.
The actual SPIRV Shader Optimization option doesn't seem to do anything as long as it isn't vinculed, so let's rework it to make it work
Co-authored-by: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>
Co-authored-by: echosys <echosys@noreply.localhost>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/238
revert [Texture_cache] Better memory handling for devices with lower memory allocations (#233)
Means games like Minecraft Dungeons, Sea of Stars, Luigi Mansion 2, Astroneer, Alan Wake, etc are now playable.
It also cleans up the recent abi.cpp and bindless texture commits a bit.
Everything is in #ifdef ANDROID - The biggest change is CACHING_PAGEBITS = 12.
Without that the way the buffercache grows and joins buffers can cause Android to run out of memory (as you end up with just one big buffer that needs to be copied every time it grows)
Also patches up ffmpeg issues.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/233
Co-authored-by: JPikachu <jpikachu.eden@gmail.com>
Co-committed-by: JPikachu <jpikachu.eden@gmail.com>
Had showed some regressions on devices with higher specifications, will be refined to return as a toggle in a later commit.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/240
Means games like Minecraft Dungeons, Sea of Stars, Luigi Mansion 2, Astroneer, Alan Wake, etc are now playable.
It also cleans up the recent abi.cpp and bindless texture commits a bit.
Everything is in #ifdef ANDROID - The biggest change is CACHING_PAGEBITS = 12.
Without that the way the buffercache grows and joins buffers can cause Android to run out of memory (as you end up with just one big buffer that needs to be copied every time it grows)
Also patches up ffmpeg issues.
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/233
Co-authored-by: JPikachu <jpikachu.eden@gmail.com>
Co-committed-by: JPikachu <jpikachu.eden@gmail.com>
