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buffer_cache: smaller regions (#3764)

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* buffer_cache: smaller regions

this was a change back between v0.9.0 to v0.10.0
9f37ede336

reverting the TRACKER_HIGHER_PAGE_BITS from 24 to 22 gives a notable increase to performance.

* Update region_definitions.h

updated copyright
This commit is contained in:
Kyoskii
2025-11-01 14:20:45 +00:00
committed by GitHub
parent 8238ecf88a
commit caccc05fb2
1 changed files with 2 additions and 2 deletions
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4
src/video_core/buffer_cache/region_definitions.h
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@@ -1,4 +1,4 @@
// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-FileCopyrightText: Copyright 2025 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
@@ -11,7 +11,7 @@ namespace VideoCore {
constexpr u64 TRACKER_PAGE_BITS = 12; // 4K pages
constexpr u64 TRACKER_BYTES_PER_PAGE = 1ULL << TRACKER_PAGE_BITS;
constexpr u64 TRACKER_HIGHER_PAGE_BITS = 24; // each region is 16MB
constexpr u64 TRACKER_HIGHER_PAGE_BITS = 22; // each region is 4MB
constexpr u64 TRACKER_HIGHER_PAGE_SIZE = 1ULL << TRACKER_HIGHER_PAGE_BITS;
constexpr u64 TRACKER_HIGHER_PAGE_MASK = TRACKER_HIGHER_PAGE_SIZE - 1ULL;
constexpr u64 NUM_PAGES_PER_REGION = TRACKER_HIGHER_PAGE_SIZE / TRACKER_BYTES_PER_PAGE;