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Allow partially mapped textures with unmapped start (#4394)

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gdkchan 2023-02-10 11:47:59 -03:00 committed by GitHub
parent 5f38086f94
commit 61b1ce252f
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2 changed files with 39 additions and 0 deletions
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7
Ryujinx.Graphics.Gpu/Image/TextureCache.cs
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@ -474,6 +474,13 @@ namespace Ryujinx.Graphics.Gpu.Image
{
address = memoryManager.Translate(info.GpuAddress);
// If the start address is unmapped, let's try to find a page of memory that is mapped.
if (address == MemoryManager.PteUnmapped)
{
address = memoryManager.TranslateFirstMapped(info.GpuAddress, (ulong)info.CalculateSizeInfo(layerSize).TotalSize);
}
// If address is still invalid, the texture is fully unmapped, so it has no data, just return null.
if (address == MemoryManager.PteUnmapped)
{
return null;

32
Ryujinx.Graphics.Gpu/Memory/MemoryManager.cs
View File

@ -583,6 +583,38 @@ namespace Ryujinx.Graphics.Gpu.Memory
return UnpackPaFromPte(pte) + (va & PageMask);
}
/// <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.