99ceb03a1c
This formats all copyright comments according to SPDX formatting guidelines. Additionally, this resolves the remaining GPLv2 only licensed files by relicensing them to GPLv2.0-or-later.
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include <atomic>
|
|
|
|
#include "common/assert.h"
|
|
#include "common/common_types.h"
|
|
#include "common/div_ceil.h"
|
|
#include "core/memory.h"
|
|
#include "video_core/rasterizer_accelerated.h"
|
|
|
|
namespace VideoCore {
|
|
|
|
using namespace Core::Memory;
|
|
|
|
RasterizerAccelerated::RasterizerAccelerated(Memory& cpu_memory_) : cpu_memory{cpu_memory_} {}
|
|
|
|
RasterizerAccelerated::~RasterizerAccelerated() = default;
|
|
|
|
void RasterizerAccelerated::UpdatePagesCachedCount(VAddr addr, u64 size, int delta) {
|
|
u64 uncache_begin = 0;
|
|
u64 cache_begin = 0;
|
|
u64 uncache_bytes = 0;
|
|
u64 cache_bytes = 0;
|
|
|
|
std::atomic_thread_fence(std::memory_order_acquire);
|
|
const u64 page_end = Common::DivCeil(addr + size, PAGE_SIZE);
|
|
for (u64 page = addr >> PAGE_BITS; page != page_end; ++page) {
|
|
std::atomic_uint16_t& count = cached_pages.at(page >> 2).Count(page);
|
|
|
|
if (delta > 0) {
|
|
ASSERT_MSG(count.load(std::memory_order::relaxed) < UINT16_MAX, "Count may overflow!");
|
|
} else if (delta < 0) {
|
|
ASSERT_MSG(count.load(std::memory_order::relaxed) > 0, "Count may underflow!");
|
|
} else {
|
|
ASSERT_MSG(false, "Delta must be non-zero!");
|
|
}
|
|
|
|
// Adds or subtracts 1, as count is a unsigned 8-bit value
|
|
count.fetch_add(static_cast<u16>(delta), std::memory_order_release);
|
|
|
|
// Assume delta is either -1 or 1
|
|
if (count.load(std::memory_order::relaxed) == 0) {
|
|
if (uncache_bytes == 0) {
|
|
uncache_begin = page;
|
|
}
|
|
uncache_bytes += PAGE_SIZE;
|
|
} else if (uncache_bytes > 0) {
|
|
cpu_memory.RasterizerMarkRegionCached(uncache_begin << PAGE_BITS, uncache_bytes, false);
|
|
uncache_bytes = 0;
|
|
}
|
|
if (count.load(std::memory_order::relaxed) == 1 && delta > 0) {
|
|
if (cache_bytes == 0) {
|
|
cache_begin = page;
|
|
}
|
|
cache_bytes += PAGE_SIZE;
|
|
} else if (cache_bytes > 0) {
|
|
cpu_memory.RasterizerMarkRegionCached(cache_begin << PAGE_BITS, cache_bytes, true);
|
|
cache_bytes = 0;
|
|
}
|
|
}
|
|
if (uncache_bytes > 0) {
|
|
cpu_memory.RasterizerMarkRegionCached(uncache_begin << PAGE_BITS, uncache_bytes, false);
|
|
}
|
|
if (cache_bytes > 0) {
|
|
cpu_memory.RasterizerMarkRegionCached(cache_begin << PAGE_BITS, cache_bytes, true);
|
|
}
|
|
}
|
|
|
|
} // namespace VideoCore
|