[video_core, settings] readback for nce invalidations (#4490) optimization and nuke toggles (#4502) (#4531)

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md).
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-------------------

Follow up for #4490: Originally i was racing locks between dirty and clean invalidations, but +94% were clean so it was causing useless locks. Solutioin was to share locks between both.

P.S.: THIS IS INTENDED TO FIX RANDOM CRASHES IN UE, OBJECTIVELY REPRODUCIBLE IN ENDER MAGNOLIA IN ANDROID.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4531
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/video_core/rasterizer_interface.h b/src/video_core/rasterizer_interface.h
index 481efbf53b..b527c0e2a9 100644
--- a/src/video_core/rasterizer_interface.h
+++ b/src/video_core/rasterizer_interface.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -111,6 +114,12 @@ public:
     /// Notify rasterizer that any caches of the specified region are desync with guest
     virtual void OnCacheInvalidation(PAddr addr, u64 size) = 0;
 
+    virtual bool TryCacheInvalidation(DAddr addr, u64 size) {
+        if (MustFlushRegion(addr, size, VideoCommon::CacheType::BufferCache)) return false;
+        OnCacheInvalidation(addr, size);
+        return true;
+    }
+
     virtual bool OnCPUWrite(PAddr addr, u64 size) = 0;
 
     /// Sync memory between guest and host.