diff options
Diffstat (limited to 'src/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs')
| -rw-r--r-- | src/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs b/src/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs index 0d4a41f0..c7a138c9 100644 --- a/src/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs +++ b/src/Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs @@ -638,6 +638,33 @@ namespace Ryujinx.Graphics.Gpu.Memory } /// <summary> + /// Translates a GPU virtual address and returns the number of bytes that are mapped after it. + /// </summary> + /// <param name="va">GPU virtual address to be translated</param> + /// <param name="maxSize">Maximum size in bytes to scan</param> + /// <returns>Number of bytes, 0 if unmapped</returns> + public ulong GetMappedSize(ulong va, ulong maxSize) + { + if (!ValidateAddress(va)) + { + return 0; + } + + ulong startVa = va; + ulong endVa = va + maxSize; + + ulong pte = GetPte(va); + + while (pte != PteUnmapped && va < endVa) + { + va += PageSize - (va & PageMask); + pte = GetPte(va); + } + + return Math.Min(maxSize, va - startVa); + } + + /// <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> |