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[dma_pusher] 1st dword dirty only safe reads (up to 99% less safe reads)

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This commit is contained in:
xbzk 2026-04-14 13:22:56 -03:00
parent 27cadb24f3
commit a16736b96e
1 changed files with 13 additions and 6 deletions
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19
src/video_core/dma_pusher.cpp
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@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later // SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@ -78,12 +78,19 @@ bool DmaPusher::Step() {
synced = false; synced = false;
} }
if (header.size > 0 && dma_state.method >= MacroRegistersStart && subchannels[dma_state.subchannel]) {
subchannels[dma_state.subchannel]->current_dirty = memory_manager.IsMemoryDirty(dma_state.dma_get, header.size * sizeof(u32));
}
if (header.size > 0) { if (header.size > 0) {
if (Settings::IsDMALevelDefault() ? (Settings::IsGPULevelMedium() || Settings::IsGPULevelHigh()) : Settings::IsDMALevelSafe()) {
if (dma_state.method >= MacroRegistersStart && subchannels[dma_state.subchannel]) {
subchannels[dma_state.subchannel]->current_dirty = memory_manager.IsMemoryDirty(dma_state.dma_get, header.size * sizeof(u32));
}
const bool safe_by_settings =
Settings::IsDMALevelDefault() ? !Settings::IsGPULevelLow() : Settings::IsDMALevelSafe();
const bool segment_dirty = !safe_by_settings &&
memory_manager.IsMemoryDirty(dma_state.dma_get, sizeof(u32), VideoCommon::CacheType::BufferCache);
if (safe_by_settings || segment_dirty) {
Tegra::Memory::GpuGuestMemory<Tegra::CommandHeader, Tegra::Memory::GuestMemoryFlags::SafeRead>headers(memory_manager, dma_state.dma_get, header.size, &command_headers); Tegra::Memory::GpuGuestMemory<Tegra::CommandHeader, Tegra::Memory::GuestMemoryFlags::SafeRead>headers(memory_manager, dma_state.dma_get, header.size, &command_headers);
ProcessCommands(headers); ProcessCommands(headers);
} else { } else {