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[video_core] cpu buffer fix + kepler uploads / maxwell macro dirty tracking fixes (#4473)

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

-------------------

Aimed to fix two known UE5 crashes: Kepler uploads and Maxwell macros, both caused by CPU/GPU races due dirty tracking issues.

Kepler ComputeInline: preserved dirty tracking across dma continuations and async readback.
Maxwell macros: preserved gpu owned subranges during page granular cpu uploads.
DiscardWrite: stopped clearing neighboring macro arguments by rounding up ranges.
DMA Step: improved continuation aware dirty sampling.

To the Ender Magnolia crew (maybe 1 or 2 persons): This will fix the dash crash, and the random / shackled beast vaper crashes.

There are some more UE5 issues to go next.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4473
Reviewed-by: lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
This commit is contained in:
xbzk
2026-09-24 18:44:14 +02:00
committed by crueter
parent cb73a4dcc7
commit dbeb73ee01
4 changed files with 38 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/video_core/engines/kepler_compute.cpp
+11 -4
View File
@@ -49,13 +49,16 @@ void KeplerCompute::CallMethod(Core::System& system, u32 method, u32 method_argu
case KEPLER_COMPUTE_REG_INDEX(exec_upload): {
UploadInfo info{.upload_address = upload_address,
.exec_address = upload_state.ExecTargetAddress(),
.copy_size = upload_state.GetUploadSize()};
.copy_size = upload_state.GetUploadSize(),
.was_dirty = upload_dirty};
uploads.push_back(info);
upload_state.ProcessExec(regs.exec_upload.linear != 0);
break;
}
case KEPLER_COMPUTE_REG_INDEX(data_upload): {
upload_address = current_dma_segment;
upload_dirty = current_dirty;
current_dirty = false;
upload_state.ProcessData(method_argument, is_last_call);
break;
}
@@ -64,9 +67,11 @@ void KeplerCompute::CallMethod(Core::System& system, u32 method, u32 method_argu
for (auto& data : uploads) {
const GPUVAddr offset = data.exec_address - launch_desc_loc;
if (offset / sizeof(u32) == LAUNCH_REG_INDEX(grid_dim_x) &&
memory_manager.IsMemoryDirty(data.upload_address, data.copy_size)) {
indirect_compute = {data.upload_address};
if (offset / sizeof(u32) == LAUNCH_REG_INDEX(grid_dim_x)) {
const bool source_dirty = memory_manager.IsMemoryDirty(data.upload_address, data.copy_size);
if (data.was_dirty || source_dirty) {
indirect_compute = {data.upload_address};
}
}
}
uploads.clear();
@@ -83,6 +88,8 @@ void KeplerCompute::CallMultiMethod(Core::System& system, u32 method, const u32*
switch (method) {
case KEPLER_COMPUTE_REG_INDEX(data_upload):
upload_address = current_dma_segment;
upload_dirty = current_dirty;
current_dirty = false;
upload_state.ProcessData(base_start, amount);
return;
default: