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Add XML documentation to Ryujinx.Graphics.Gpu.Image

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gdkchan 2019-12-29 20:26:37 -03:00 • committed by Thog
parent 53bbc1311f
commit 32764f9560
24 changed files with 1133 additions and 61 deletions
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255
Ryujinx.Graphics.Gpu/Image/Texture.cs
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@ -10,14 +10,23 @@ using System.Diagnostics;
namespace Ryujinx.Graphics.Gpu.Image
{
/// <summary>
/// Represents a cached GPU texture.
/// </summary>
class Texture : IRange<Texture>
{
private GpuContext _context;
private SizeInfo _sizeInfo;
/// <summary>
/// Texture format.
/// </summary>
public Format Format => Info.FormatInfo.Format;
/// <summary>
/// Texture information.
/// </summary>
public TextureInfo Info { get; private set; }
private int _depth;
@ -34,21 +43,48 @@ namespace Ryujinx.Graphics.Gpu.Image
private List<Texture> _views;
/// <summary>
/// Host texture.
/// </summary>
public ITexture HostTexture { get; private set; }
/// <summary>
/// Intrusive linked list node used on the auto deletion texture cache.
/// </summary>
public LinkedListNode<Texture> CacheNode { get; set; }
/// <summary>
/// Texture data modified by the GPU.
/// </summary>
public bool Modified { get; set; }
public ulong Address => Info.Address;
/// <summary>
/// Start address of the texture in guest memory.
/// </summary>
public ulong Address => Info.Address;
/// <summary>
/// End address of the texture in guest memory.
/// </summary>
public ulong EndAddress => Info.Address + Size;
/// <summary>
/// Texture size in bytes.
/// </summary>
public ulong Size => (ulong)_sizeInfo.TotalSize;
private int _referenceCount;
private int _sequenceNumber;
/// <summary>
/// Constructs a new instance of the cached GPU texture.
/// </summary>
/// <param name="context">GPU context that the texture belongs to</param>
/// <param name="info">Texture information</param>
/// <param name="sizeInfo">Size information of the texture</param>
/// <param name="firstLayer">The first layer of the texture, or 0 if the texture has no parent</param>
/// <param name="firstLevel">The first mipmap level of the texture, or 0 if the texture has no parent</param>
private Texture(
GpuContext context,
TextureInfo info,
@ -64,6 +100,12 @@ namespace Ryujinx.Graphics.Gpu.Image
_hasData = true;
}
/// <summary>
/// Constructs a new instance of the cached GPU texture.
/// </summary>
/// <param name="context">GPU context that the texture belongs to</param>
/// <param name="info">Texture information</param>
/// <param name="sizeInfo">Size information of the texture</param>
public Texture(GpuContext context, TextureInfo info, SizeInfo sizeInfo)
{
InitializeTexture(context, info, sizeInfo);
@ -73,6 +115,14 @@ namespace Ryujinx.Graphics.Gpu.Image
HostTexture = _context.Renderer.CreateTexture(createInfo);
}
/// <summary>
/// Common texture initialization method.
/// This sets the context, info and sizeInfo fields.
/// Other fields are initialized with their default values.
/// </summary>
/// <param name="context">GPU context that the texture belongs to</param>
/// <param name="info">Texture information</param>
/// <param name="sizeInfo">Size information of the texture</param>
private void InitializeTexture(GpuContext context, TextureInfo info, SizeInfo sizeInfo)
{
_context = context;
@ -85,6 +135,17 @@ namespace Ryujinx.Graphics.Gpu.Image
_views = new List<Texture>();
}
/// <summary>
/// Create a texture view from this texture.
/// A texture view is defined as a child texture, from a sub-range of their parent texture.
/// For example, the initial layer and mipmap level of the view can be defined, so the texture
/// will start at the given layer/level of the parent texture.
/// </summary>
/// <param name="info">Child texture information</param>
/// <param name="sizeInfo">Child texture size information</param>
/// <param name="firstLayer">Start layer of the child texture on the parent texture</param>
/// <param name="firstLevel">Start mipmap level of the child texture on the parent texture</param>
/// <returns>The child texture</returns>
public Texture CreateView(TextureInfo info, SizeInfo sizeInfo, int firstLayer, int firstLevel)
{
Texture texture = new Texture(
@ -103,6 +164,10 @@ namespace Ryujinx.Graphics.Gpu.Image
return texture;
}
/// <summary>
/// Adds a child texture to this texture.
/// </summary>
/// <param name="texture">The child texture</param>
private void AddView(Texture texture)
{
_views.Add(texture);
@ -110,6 +175,10 @@ namespace Ryujinx.Graphics.Gpu.Image
texture._viewStorage = this;
}
/// <summary>
/// Removes a child texture from this texture.
/// </summary>
/// <param name="texture">The child texture</param>
private void RemoveView(Texture texture)
{
_views.Remove(texture);
@ -119,6 +188,14 @@ namespace Ryujinx.Graphics.Gpu.Image
DeleteIfNotUsed();
}
/// <summary>
/// Changes the texture size.
/// This operation may also change the size of all mipmap levels, including from the parent
/// and other possible child textures, to ensure that all sizes are consistent.
/// </summary>
/// <param name="width">The new texture width</param>
/// <param name="height">The new texture height</param>
/// <param name="depthOrLayers">The new texture depth (for 3D textures) or layers (for layered textures)</param>
public void ChangeSize(int width, int height, int depthOrLayers)
{
width <<= _firstLevel;
@ -155,6 +232,14 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Recreates the texture storage (or view, in the case of child textures) of this texture.
/// This allows recreating the texture with a new size.
/// A copy is automatically performed from the old to the new texture.
/// </summary>
/// <param name="width">The new texture width</param>
/// <param name="height">The new texture height</param>
/// <param name="depthOrLayers">The new texture depth (for 3D textures) or layers (for layered textures)</param>
private void RecreateStorageOrView(int width, int height, int depthOrLayers)
{
SetInfo(new TextureInfo(
@ -194,6 +279,13 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Synchronizes guest and host memory.
/// This will overwrite the texture data with the texture data on the guest memory, if a CPU
/// modification is detected.
/// Be aware that this can cause texture data written by the GPU to be lost, this is just a
/// one way copy (from CPU owned to GPU owned memory).
/// </summary>
public void SynchronizeMemory()
{
if (_sequenceNumber == _context.SequenceNumber && _hasData)
@ -266,6 +358,14 @@ namespace Ryujinx.Graphics.Gpu.Image
_hasData = true;
}
/// <summary>
/// Flushes the texture data.
/// This causes the texture data to be written back to guest memory.
/// If the texture was written by the GPU, this includes all modification made by the GPU
/// up to this point.
/// Be aware that this is a expensive operation, avoid calling it unless strictly needed.
/// This may cause data corruption if the memory is already being used for something else on the CPU side.
/// </summary>
public void Flush()
{
Span<byte> data = HostTexture.GetData();
@ -302,6 +402,13 @@ namespace Ryujinx.Graphics.Gpu.Image
_context.PhysicalMemory.Write(Address, data);
}
/// <summary>
/// Performs a comparison of this texture information, with the specified texture information.
/// This performs a strict comparison, used to check if two textures are equal.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <param name="flags">Comparison flags</param>
/// <returns>True if the textures are strictly equal or similar, false otherwise</returns>
public bool IsPerfectMatch(TextureInfo info, TextureSearchFlags flags)
{
if (!FormatMatches(info, (flags & TextureSearchFlags.Strict) != 0))
@ -344,6 +451,12 @@ namespace Ryujinx.Graphics.Gpu.Image
return Info.Address == info.Address && Info.Levels == info.Levels;
}
/// <summary>
/// Checks if the texture format matches with the specified texture information.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <param name="strict">True to perform a strict comparison (formats must be exactly equal)</param>
/// <returns>True if the format matches, with the given comparison rules</returns>
private bool FormatMatches(TextureInfo info, bool strict)
{
// D32F and R32F texture have the same representation internally,
@ -356,6 +469,13 @@ namespace Ryujinx.Graphics.Gpu.Image
return Info.FormatInfo.Format == info.FormatInfo.Format;
}
/// <summary>
/// Checks if the texture layout specified matches with this texture layout.
/// The layout information is composed of the Stride for linear textures, or GOB block size
/// for block linear textures.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <returns>True if the layout matches, false otherwise</returns>
private bool LayoutMatches(TextureInfo info)
{
if (Info.IsLinear != info.IsLinear)
@ -376,11 +496,23 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Checks if the texture sizes of the supplied texture information matches this texture.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <returns>True if the size matches, false otherwise</returns>
public bool SizeMatches(TextureInfo info)
{
return SizeMatches(info, alignSizes: false);
}
/// <summary>
/// Checks if the texture sizes of the supplied texture information matches the given level of
/// this texture.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <param name="level">Mipmap level of this texture to compare with</param>
/// <returns>True if the size matches with the level, false otherwise</returns>
public bool SizeMatches(TextureInfo info, int level)
{
return Math.Max(1, Info.Width >> level) == info.Width &&
@ -388,6 +520,12 @@ namespace Ryujinx.Graphics.Gpu.Image
Math.Max(1, Info.GetDepth() >> level) == info.GetDepth();
}
/// <summary>
/// Checks if the texture sizes of the supplied texture information matches this texture.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <param name="alignSizes">True to align the sizes according to the texture layout for comparison</param>
/// <returns>True if the sizes matches, false otherwise</returns>
private bool SizeMatches(TextureInfo info, bool alignSizes)
{
if (Info.GetLayers() != info.GetLayers())
@ -412,6 +550,11 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Checks if the texture shader sampling parameters matches.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <returns>True if the texture shader sampling parameters matches, false otherwise</returns>
private bool SamplerParamsMatches(TextureInfo info)
{
return Info.DepthStencilMode == info.DepthStencilMode &&
@ -421,6 +564,11 @@ namespace Ryujinx.Graphics.Gpu.Image
Info.SwizzleA == info.SwizzleA;
}
/// <summary>
/// Check if the texture target and samples count (for multisampled textures) matches.
/// </summary>
/// <param name="info">Texture information to compare with</param>
/// <returns>True if the texture target and samples count matches, false otherwise</returns>
private bool TargetAndSamplesCompatible(TextureInfo info)
{
return Info.Target == info.Target &&
@ -428,6 +576,14 @@ namespace Ryujinx.Graphics.Gpu.Image
Info.SamplesInY == info.SamplesInY;
}
/// <summary>
/// Check if it's possible to create a view, with the given parameters, from this texture.
/// </summary>
/// <param name="info">Texture view information</param>
/// <param name="size">Texture view size</param>
/// <param name="firstLayer">Texture view initial layer on this texture</param>
/// <param name="firstLevel">Texture view first mipmap level on this texture</param>
/// <returns>True if a view with the given parameters can be created from this texture, false otherwise</returns>
public bool IsViewCompatible(
TextureInfo info,
ulong size,
@ -437,6 +593,15 @@ namespace Ryujinx.Graphics.Gpu.Image
return IsViewCompatible(info, size, isCopy: false, out firstLayer, out firstLevel);
}
/// <summary>
/// Check if it's possible to create a view, with the given parameters, from this texture.
/// </summary>
/// <param name="info">Texture view information</param>
/// <param name="size">Texture view size</param>
/// <param name="isCopy">True to check for copy compability, instead of view compatibility</param>
/// <param name="firstLayer">Texture view initial layer on this texture</param>
/// <param name="firstLevel">Texture view first mipmap level on this texture</param>
/// <returns>True if a view with the given parameters can be created from this texture, false otherwise</returns>
public bool IsViewCompatible(
TextureInfo info,
ulong size,
@ -484,6 +649,14 @@ namespace Ryujinx.Graphics.Gpu.Image
Info.SamplesInY == info.SamplesInY;
}
/// <summary>
/// Check it's possible to create a view with the specified layout.
/// The layout information is composed of the Stride for linear textures, or GOB block size
/// for block linear textures.
/// </summary>
/// <param name="info">Texture information of the texture view</param>
/// <param name="level">Start level of the texture view, in relation with this texture</param>
/// <returns>True if the layout is compatible, false otherwise</returns>
private bool ViewLayoutCompatible(TextureInfo info, int level)
{
if (Info.IsLinear != info.IsLinear)
@ -520,11 +693,26 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Checks if the view format is compatible with this texture format.
/// In general, the formats are considered compatible if the bytes per pixel value is equal,
/// but there are more complex rules for some formats, like compressed or depth-stencil formats.
/// This follows the host API copy compatibility rules.
/// </summary>
/// <param name="info">Texture information of the texture view</param>
/// <returns>True if the formats are compatible, false otherwise</returns>
private bool ViewFormatCompatible(TextureInfo info)
{
return TextureCompatibility.FormatCompatible(Info.FormatInfo, info.FormatInfo);
}
/// <summary>
/// Checks if the size of a given texture view is compatible with this texture.
/// </summary>
/// <param name="info">Texture information of the texture view</param>
/// <param name="level">Mipmap level of the texture view in relation to this texture</param>
/// <param name="isCopy">True to check for copy compatibility rather than view compatibility</param>
/// <returns>True if the sizes are compatible, false otherwise</returns>
private bool ViewSizeMatches(TextureInfo info, int level, bool isCopy)
{
Size size = GetAlignedSize(Info, level);
@ -542,6 +730,14 @@ namespace Ryujinx.Graphics.Gpu.Image
size.Height == otherSize.Height;
}
/// <summary>
/// Check if the target of the specified texture view information is compatible with this
/// texture.
/// This follows the host API target compatibility rules.
/// </summary>
/// <param name="info">Texture information of the texture view</param>
/// <param name="isCopy">True to check for copy rather than view compatibility</param>
/// <returns>True if the targets are compatible, false otherwise</returns>
private bool ViewTargetCompatible(TextureInfo info, bool isCopy)
{
switch (Info.Target)
@ -576,6 +772,13 @@ namespace Ryujinx.Graphics.Gpu.Image
return false;
}
/// <summary>
/// Gets the aligned sizes of the specified texture information.
/// The alignment depends on the texture layout and format bytes per pixel.
/// </summary>
/// <param name="info">Texture information to calculate the aligned size from</param>
/// <param name="level">Mipmap level for texture views</param>
/// <returns>The aligned texture size</returns>
private static Size GetAlignedSize(TextureInfo info, int level = 0)
{
int width = Math.Max(1, info.Width >> level);
@ -614,6 +817,13 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Gets a texture of the specified target type from this texture.
/// This can be used to get an array texture from a non-array texture and vice-versa.
/// If this texture and the requested targets are equal, then this texture Host texture is returned directly.
/// </summary>
/// <param name="target">The desired target type</param>
/// <returns>A view of this texture with the requested target, or null if the target is invalid for this texture</returns>
public ITexture GetTargetTexture(Target target)
{
if (target == Info.Target)
@ -655,6 +865,13 @@ namespace Ryujinx.Graphics.Gpu.Image
return null;
}
/// <summary>
/// Check if this texture and the specified target have the same number of dimensions.
/// For the purposes of this comparison, 2D and 2D Multisample textures are not considered to have
/// the same number of dimensions. Same for Cubemap and 3D textures.
/// </summary>
/// <param name="target">The target to compare with</param>
/// <returns>True if both targets have the same number of dimensions, false otherwise</returns>
private bool IsSameDimensionsTarget(Target target)
{
switch (Info.Target)
@ -686,6 +903,13 @@ namespace Ryujinx.Graphics.Gpu.Image
return false;
}
/// <summary>
/// Replaces view texture information.
/// This should only be used for child textures with a parent.
/// </summary>
/// <param name="parent">The parent texture</param>
/// <param name="info">The new view texture information</param>
/// <param name="hostTexture">The new host texture</param>
public void ReplaceView(Texture parent, TextureInfo info, ITexture hostTexture)
{
ReplaceStorage(hostTexture);
@ -695,6 +919,10 @@ namespace Ryujinx.Graphics.Gpu.Image
SetInfo(info);
}
/// <summary>
/// Sets the internal texture information structure.
/// </summary>
/// <param name="info">The new texture information</param>
private void SetInfo(TextureInfo info)
{
Info = info;
@ -703,6 +931,10 @@ namespace Ryujinx.Graphics.Gpu.Image
_layers = info.GetLayers();
}
/// <summary>
/// Replaces the host texture, while disposing of the old one if needed.
/// </summary>
/// <param name="hostTexture">The new host texture</param>
private void ReplaceStorage(ITexture hostTexture)
{
DisposeTextures();
@ -710,16 +942,29 @@ namespace Ryujinx.Graphics.Gpu.Image
HostTexture = hostTexture;
}
/// <summary>
/// Checks if the texture overlaps with a memory range.
/// </summary>
/// <param name="address">Start address of the range</param>
/// <param name="size">Size of the range</param>
/// <returns>True if the texture overlaps with the range, false otherwise</returns>
public bool OverlapsWith(ulong address, ulong size)
{
return Address < address + size && address < EndAddress;
}
/// <summary>
/// Increments the texture reference count.
/// </summary>
public void IncrementReferenceCount()
{
_referenceCount++;
}
/// <summary>
/// Decrements the texture reference count.
/// When the reference count hits zero, the texture may be deleted and can't be used anymore.
/// </summary>
public void DecrementReferenceCount()
{
int newRefCount = --_referenceCount;
@ -739,6 +984,11 @@ namespace Ryujinx.Graphics.Gpu.Image
DeleteIfNotUsed();
}
/// <summary>
/// Delete the texture if it is not used anymore.
/// The texture is considered unused when the reference count is zero,
/// and it has no child views.
/// </summary>
private void DeleteIfNotUsed()
{
// We can delete the texture as long it is not being used
@ -751,6 +1001,9 @@ namespace Ryujinx.Graphics.Gpu.Image
}
}
/// <summary>
/// Performs texture disposal, deleting the texture.
/// </summary>
private void DisposeTextures()
{
HostTexture.Dispose();