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Code Issues Releases Activity

GPU MemoryManager: Implement ReadBlockUnsafe and WriteBlockUnsafe

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This commit is contained in:
Fernando Sahmkow 2019-04-15 23:01:35 -04:00
parent 1f4dfb3998
commit 367704aa82
2 changed files with 34 additions and 0 deletions
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32
src/video_core/memory_manager.cpp
View file

@ -226,6 +226,22 @@ void MemoryManager::ReadBlock(GPUVAddr src_addr, void* dest_buffer, std::size_t
} }
} }
void MemoryManager::ReadBlockUnsafe(GPUVAddr src_addr, void* dest_buffer, std::size_t size) const {
std::size_t remaining_size{size};
std::size_t page_index{src_addr >> page_bits};
std::size_t page_offset{src_addr & page_mask};
while (remaining_size > 0) {
const std::size_t copy_amount{
std::min(static_cast<std::size_t>(page_size) - page_offset, remaining_size)};
std::memcpy(dest_buffer, src_ptr, copy_amount);
page_index++;
page_offset = 0;
dest_buffer = static_cast<u8*>(dest_buffer) + copy_amount;
remaining_size -= copy_amount;
}
}
void MemoryManager::WriteBlock(GPUVAddr dest_addr, const void* src_buffer, std::size_t size) { void MemoryManager::WriteBlock(GPUVAddr dest_addr, const void* src_buffer, std::size_t size) {
std::size_t remaining_size{size}; std::size_t remaining_size{size};
std::size_t page_index{dest_addr >> page_bits}; std::size_t page_index{dest_addr >> page_bits};
@ -253,6 +269,22 @@ void MemoryManager::WriteBlock(GPUVAddr dest_addr, const void* src_buffer, std::
} }
} }
void MemoryManager::WriteBlockUnsafe(GPUVAddr dest_addr, const void* src_buffer, std::size_t size) {
std::size_t remaining_size{size};
std::size_t page_index{dest_addr >> page_bits};
std::size_t page_offset{dest_addr & page_mask};
while (remaining_size > 0) {
const std::size_t copy_amount{
std::min(static_cast<std::size_t>(page_size) - page_offset, remaining_size)};
std::memcpy(dest_ptr, src_buffer, copy_amount);
page_index++;
page_offset = 0;
src_buffer = static_cast<const u8*>(src_buffer) + copy_amount;
remaining_size -= copy_amount;
}
}
void MemoryManager::CopyBlock(GPUVAddr dest_addr, GPUVAddr src_addr, std::size_t size) { void MemoryManager::CopyBlock(GPUVAddr dest_addr, GPUVAddr src_addr, std::size_t size) {
std::size_t remaining_size{size}; std::size_t remaining_size{size};
std::size_t page_index{src_addr >> page_bits}; std::size_t page_index{src_addr >> page_bits};

2
src/video_core/memory_manager.h
View file

@ -67,6 +67,8 @@ public:
void ReadBlock(GPUVAddr src_addr, void* dest_buffer, std::size_t size) const; void ReadBlock(GPUVAddr src_addr, void* dest_buffer, std::size_t size) const;
void WriteBlock(GPUVAddr dest_addr, const void* src_buffer, std::size_t size); void WriteBlock(GPUVAddr dest_addr, const void* src_buffer, std::size_t size);
void ReadBlockUnsafe(GPUVAddr src_addr, void* dest_buffer, std::size_t size) const;
void WriteBlockUnsafe(GPUVAddr dest_addr, const void* src_buffer, std::size_t size);
void CopyBlock(GPUVAddr dest_addr, GPUVAddr src_addr, std::size_t size); void CopyBlock(GPUVAddr dest_addr, GPUVAddr src_addr, std::size_t size);
private: private: