mirrors/shadPS4
1
0
Fork 0
mirror of https://github.com/shadps4-emu/shadPS4.git synced 2025-12-13 07:08:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

video_core: Upload buffer memory around unmapped pages (#3580)

Browse Source
This commit is contained in:
squidbus
2025-09-12 08:23:00 -07:00
committed by GitHub
parent f3e344dfcf
commit de7652384d
3 changed files with 11 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/core/memory.cpp
View File

@@ -68,7 +68,7 @@ void MemoryManager::SetupMemoryRegions(u64 flexible_size, bool use_extended_mem1
}
u64 MemoryManager::ClampRangeSize(VAddr virtual_addr, u64 size) {
static constexpr u64 MinSizeToClamp = 2_MB;
static constexpr u64 MinSizeToClamp = 3_GB;
// Dont bother with clamping if the size is small so we dont pay a map lookup on every buffer.
if (size < MinSizeToClamp) {
return size;
@@ -114,20 +114,14 @@ void MemoryManager::SetPrtArea(u32 id, VAddr address, u64 size) {
void MemoryManager::CopySparseMemory(VAddr virtual_addr, u8* dest, u64 size) {
ASSERT_MSG(IsValidAddress(reinterpret_cast<void*>(virtual_addr)),
"Attempted to access invalid address {:#x}", virtual_addr);
const bool is_sparse = std::ranges::any_of(
prt_areas, [&](const PrtArea& area) { return area.Overlaps(virtual_addr, size); });
if (!is_sparse) {
std::memcpy(dest, std::bit_cast<const u8*>(virtual_addr), size);
return;
}
auto vma = FindVMA(virtual_addr);
while (size) {
u64 copy_size = std::min<u64>(vma->second.size - (virtual_addr - vma->first), size);
if (vma->second.IsFree()) {
std::memset(dest, 0, copy_size);
} else {
if (vma->second.IsMapped()) {
std::memcpy(dest, std::bit_cast<const u8*>(virtual_addr), copy_size);
} else {
std::memset(dest, 0, copy_size);
}
size -= copy_size;
virtual_addr += copy_size;