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using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.GAL.Texture;
using Ryujinx.Graphics.Gpu.Memory;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Image
{
class TexturePool : Pool<Texture>
{
public LinkedListNode<TexturePool> CacheNode { get; set; }
private struct TextureContainer
{
public Texture Texture0 { get; set; }
public Texture Texture1 { get; set; }
}
public TexturePool(
GpuContext context,
ulong address,
int maximumId) : base(context, address, maximumId) { }
public override Texture Get(int id)
{
if ((uint)id >= Items.Length)
{
return null;
}
SynchronizeMemory();
Texture texture = Items[id];
if (texture == null)
{
ulong address = Address + (ulong)(uint)id * DescriptorSize;
Span<byte> data = Context.PhysicalMemory.Read(address, DescriptorSize);
TextureDescriptor descriptor = MemoryMarshal.Cast<byte, TextureDescriptor>(data)[0];
TextureInfo info = GetInfo(descriptor);
// Bad address. We can't add a texture with a invalid address
// to the cache.
if (info.Address == MemoryManager.BadAddress)
{
return null;
}
texture = Context.Methods.TextureManager.FindOrCreateTexture(info, TextureSearchFlags.Sampler);
texture.IncrementReferenceCount();
Items[id] = texture;
}
else
{
// Memory is automatically synchronized on texture creation.
texture.SynchronizeMemory();
}
return texture;
}
protected override void InvalidateRangeImpl(ulong address, ulong size)
{
ulong endAddress = address + size;
for (; address < endAddress; address += DescriptorSize)
{
int id = (int)((address - Address) / DescriptorSize);
Texture texture = Items[id];
if (texture != null)
{
Span<byte> data = Context.PhysicalMemory.Read(address, DescriptorSize);
TextureDescriptor descriptor = MemoryMarshal.Cast<byte, TextureDescriptor>(data)[0];
// If the descriptors are the same, the texture is the same,
// we don't need to remove as it was not modified. Just continue.
if (texture.IsPerfectMatch(GetInfo(descriptor), TextureSearchFlags.Strict))
{
continue;
}
texture.DecrementReferenceCount();
Items[id] = null;
}
}
}
private TextureInfo GetInfo(TextureDescriptor descriptor)
{
ulong address = Context.MemoryManager.Translate(descriptor.UnpackAddress());
int width = descriptor.UnpackWidth();
int height = descriptor.UnpackHeight();
int depthOrLayers = descriptor.UnpackDepth();
int levels = descriptor.UnpackLevels();
TextureMsaaMode msaaMode = descriptor.UnpackTextureMsaaMode();
int samplesInX = msaaMode.SamplesInX();
int samplesInY = msaaMode.SamplesInY();
int stride = descriptor.UnpackStride();
TextureDescriptorType descriptorType = descriptor.UnpackTextureDescriptorType();
bool isLinear = descriptorType == TextureDescriptorType.Linear;
Target target = descriptor.UnpackTextureTarget().Convert((samplesInX | samplesInY) != 1);
uint format = descriptor.UnpackFormat();
bool srgb = descriptor.UnpackSrgb();
if (!FormatTable.TryGetTextureFormat(format, srgb, out FormatInfo formatInfo))
{
// TODO: Warning.
formatInfo = FormatInfo.Default;
}
int gobBlocksInY = descriptor.UnpackGobBlocksInY();
int gobBlocksInZ = descriptor.UnpackGobBlocksInZ();
int gobBlocksInTileX = descriptor.UnpackGobBlocksInTileX();
SwizzleComponent swizzleR = descriptor.UnpackSwizzleR().Convert();
SwizzleComponent swizzleG = descriptor.UnpackSwizzleG().Convert();
SwizzleComponent swizzleB = descriptor.UnpackSwizzleB().Convert();
SwizzleComponent swizzleA = descriptor.UnpackSwizzleA().Convert();
DepthStencilMode depthStencilMode = GetDepthStencilMode(
formatInfo.Format,
swizzleR,
swizzleG,
swizzleB,
swizzleA);
return new TextureInfo(
address,
width,
height,
depthOrLayers,
levels,
samplesInX,
samplesInY,
stride,
isLinear,
gobBlocksInY,
gobBlocksInZ,
gobBlocksInTileX,
target,
formatInfo,
depthStencilMode,
swizzleR,
swizzleG,
swizzleB,
swizzleA);
}
private static DepthStencilMode GetDepthStencilMode(Format format, params SwizzleComponent[] components)
{
// R = Depth, G = Stencil.
// On 24-bits depth formats, this is inverted (Stencil is R etc).
// NVN setup:
// For depth, A is set to 1.0f, the other components are set to Depth.
// For stencil, all components are set to Stencil.
SwizzleComponent component = components[0];
for (int index = 1; index < 4 && !IsRG(component); index++)
{
component = components[index];
}
if (!IsRG(component))
{
return DepthStencilMode.Depth;
}
if (format == Format.D24X8Unorm || format == Format.D24UnormS8Uint)
{
return component == SwizzleComponent.Red
? DepthStencilMode.Stencil
: DepthStencilMode.Depth;
}
else
{
return component == SwizzleComponent.Red
? DepthStencilMode.Depth
: DepthStencilMode.Stencil;
}
}
private static bool IsRG(SwizzleComponent component)
{
return component == SwizzleComponent.Red ||
component == SwizzleComponent.Green;
}
protected override void Delete(Texture item)
{
item?.DecrementReferenceCount();
}
}
}
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