diff options
Diffstat (limited to 'Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs')
| -rw-r--r-- | Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs b/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs index 0ac6160d..b0f7e799 100644 --- a/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs +++ b/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs @@ -584,6 +584,38 @@ namespace Ryujinx.Graphics.Gpu.Memory } /// <summary> + /// Translates a GPU virtual address to a CPU virtual address on the first mapped page of memory + /// on the specified region. + /// If no page is mapped on the specified region, <see cref="PteUnmapped"/> is returned. + /// </summary> + /// <param name="va">GPU virtual address to be translated</param> + /// <param name="size">Size of the range to be translated</param> + /// <returns>CPU virtual address, or <see cref="PteUnmapped"/> if unmapped</returns> + public ulong TranslateFirstMapped(ulong va, ulong size) + { + if (!ValidateAddress(va)) + { + return PteUnmapped; + } + + ulong endVa = va + size; + + ulong pte = GetPte(va); + + for (; va < endVa && pte == PteUnmapped; va += PageSize - (va & PageMask)) + { + pte = GetPte(va); + } + + if (pte == PteUnmapped) + { + return PteUnmapped; + } + + return UnpackPaFromPte(pte) + (va & PageMask); + } + + /// <summary> /// Gets the kind of a given memory page. /// This might indicate the type of resource that can be allocated on the page, and also texture tiling. /// </summary> |