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ryujinx-fork/Ryujinx.Graphics.OpenGL/TextureView.cs
gdkchan 3cb1fa0e85
Implement texture buffers (#1152)
* Implement texture buffers

* Throw NotSupportedException where appropriate
2020-04-25 23:02:18 +10:00

433 lines
14 KiB
C#

using OpenTK.Graphics.OpenGL;
using Ryujinx.Graphics.GAL;
using System;
namespace Ryujinx.Graphics.OpenGL
{
class TextureView : TextureBase, ITexture
{
private readonly Renderer _renderer;
private readonly TextureStorage _parent;
private TextureView _emulatedViewParent;
private TextureView _incompatibleFormatView;
public int FirstLayer { get; private set; }
public int FirstLevel { get; private set; }
public TextureView(
Renderer renderer,
TextureStorage parent,
TextureCreateInfo info,
int firstLayer,
int firstLevel) : base(info)
{
_renderer = renderer;
_parent = parent;
FirstLayer = firstLayer;
FirstLevel = firstLevel;
CreateView();
}
private void CreateView()
{
TextureTarget target = Target.Convert();
FormatInfo format = FormatTable.GetFormatInfo(Info.Format);
PixelInternalFormat pixelInternalFormat;
if (format.IsCompressed)
{
pixelInternalFormat = (PixelInternalFormat)format.PixelFormat;
}
else
{
pixelInternalFormat = format.PixelInternalFormat;
}
GL.TextureView(
Handle,
target,
_parent.Handle,
pixelInternalFormat,
FirstLevel,
Info.Levels,
FirstLayer,
Info.GetLayers());
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(target, Handle);
int[] swizzleRgba = new int[]
{
(int)Info.SwizzleR.Convert(),
(int)Info.SwizzleG.Convert(),
(int)Info.SwizzleB.Convert(),
(int)Info.SwizzleA.Convert()
};
GL.TexParameter(target, TextureParameterName.TextureSwizzleRgba, swizzleRgba);
int maxLevel = Info.Levels - 1;
if (maxLevel < 0)
{
maxLevel = 0;
}
GL.TexParameter(target, TextureParameterName.TextureMaxLevel, maxLevel);
GL.TexParameter(target, TextureParameterName.DepthStencilTextureMode, (int)Info.DepthStencilMode.Convert());
}
public ITexture CreateView(TextureCreateInfo info, int firstLayer, int firstLevel)
{
if (Info.IsCompressed == info.IsCompressed)
{
firstLayer += FirstLayer;
firstLevel += FirstLevel;
return _parent.CreateView(info, firstLayer, firstLevel);
}
else
{
// TODO: Most graphics APIs doesn't support creating a texture view from a compressed format
// with a non-compressed format (or vice-versa), however NVN seems to support it.
// So we emulate that here with a texture copy (see the first CopyTo overload).
// However right now it only does a single copy right after the view is created,
// so it doesn't work for all cases.
TextureView emulatedView = (TextureView)_renderer.CreateTexture(info);
emulatedView._emulatedViewParent = this;
emulatedView.FirstLayer = firstLayer;
emulatedView.FirstLevel = firstLevel;
return emulatedView;
}
}
public int GetIncompatibleFormatViewHandle()
{
// AMD and Intel has a bug where the view format is always ignored,
// it uses the parent format instead.
// As workaround we create a new texture with the correct
// format, and then do a copy after the draw.
if (_parent.Info.Format != Format)
{
if (_incompatibleFormatView == null)
{
_incompatibleFormatView = (TextureView)_renderer.CreateTexture(Info);
}
TextureCopyUnscaled.Copy(_parent.Info, _incompatibleFormatView.Info, _parent.Handle, _incompatibleFormatView.Handle, FirstLayer, 0, FirstLevel, 0);
return _incompatibleFormatView.Handle;
}
return Handle;
}
public void SignalModified()
{
if (_incompatibleFormatView != null)
{
TextureCopyUnscaled.Copy(_incompatibleFormatView.Info, _parent.Info, _incompatibleFormatView.Handle, _parent.Handle, 0, FirstLayer, 0, FirstLevel);
}
}
public void CopyTo(ITexture destination, int firstLayer, int firstLevel)
{
TextureView destinationView = (TextureView)destination;
TextureCopyUnscaled.Copy(Info, destinationView.Info, Handle, destinationView.Handle, 0, firstLayer, 0, firstLevel);
if (destinationView._emulatedViewParent != null)
{
TextureCopyUnscaled.Copy(
Info,
destinationView._emulatedViewParent.Info,
Handle,
destinationView._emulatedViewParent.Handle,
0,
destinationView.FirstLayer,
0,
destinationView.FirstLevel);
}
}
public void CopyTo(ITexture destination, Extents2D srcRegion, Extents2D dstRegion, bool linearFilter)
{
_renderer.TextureCopy.Copy(this, (TextureView)destination, srcRegion, dstRegion, linearFilter);
}
public byte[] GetData()
{
int size = 0;
for (int level = 0; level < Info.Levels; level++)
{
size += Info.GetMipSize(level);
}
byte[] data = new byte[size];
unsafe
{
fixed (byte* ptr = data)
{
WriteTo((IntPtr)ptr);
}
}
return data;
}
private void WriteTo(IntPtr ptr)
{
TextureTarget target = Target.Convert();
Bind(target, 0);
FormatInfo format = FormatTable.GetFormatInfo(Info.Format);
int faces = 1;
if (target == TextureTarget.TextureCubeMap)
{
target = TextureTarget.TextureCubeMapPositiveX;
faces = 6;
}
for (int level = 0; level < Info.Levels; level++)
{
for (int face = 0; face < faces; face++)
{
int faceOffset = face * Info.GetMipSize2D(level);
if (format.IsCompressed)
{
GL.GetCompressedTexImage(target + face, level, ptr + faceOffset);
}
else
{
GL.GetTexImage(
target + face,
level,
format.PixelFormat,
format.PixelType,
ptr + faceOffset);
}
}
ptr += Info.GetMipSize(level);
}
}
public void SetData(ReadOnlySpan<byte> data)
{
unsafe
{
fixed (byte* ptr = data)
{
SetData((IntPtr)ptr, data.Length);
}
}
}
private void SetData(IntPtr data, int size)
{
TextureTarget target = Target.Convert();
Bind(target, 0);
FormatInfo format = FormatTable.GetFormatInfo(Info.Format);
int width = Info.Width;
int height = Info.Height;
int depth = Info.Depth;
int offset = 0;
for (int level = 0; level < Info.Levels; level++)
{
int mipSize = Info.GetMipSize(level);
int endOffset = offset + mipSize;
if ((uint)endOffset > (uint)size)
{
return;
}
switch (Info.Target)
{
case Target.Texture1D:
if (format.IsCompressed)
{
GL.CompressedTexSubImage1D(
target,
level,
0,
width,
format.PixelFormat,
mipSize,
data);
}
else
{
GL.TexSubImage1D(
target,
level,
0,
width,
format.PixelFormat,
format.PixelType,
data);
}
break;
case Target.Texture1DArray:
case Target.Texture2D:
if (format.IsCompressed)
{
GL.CompressedTexSubImage2D(
target,
level,
0,
0,
width,
height,
format.PixelFormat,
mipSize,
data);
}
else
{
GL.TexSubImage2D(
target,
level,
0,
0,
width,
height,
format.PixelFormat,
format.PixelType,
data);
}
break;
case Target.Texture2DArray:
case Target.Texture3D:
case Target.CubemapArray:
if (format.IsCompressed)
{
GL.CompressedTexSubImage3D(
target,
level,
0,
0,
0,
width,
height,
depth,
format.PixelFormat,
mipSize,
data);
}
else
{
GL.TexSubImage3D(
target,
level,
0,
0,
0,
width,
height,
depth,
format.PixelFormat,
format.PixelType,
data);
}
break;
case Target.Cubemap:
int faceOffset = 0;
for (int face = 0; face < 6; face++, faceOffset += mipSize / 6)
{
if (format.IsCompressed)
{
GL.CompressedTexSubImage2D(
TextureTarget.TextureCubeMapPositiveX + face,
level,
0,
0,
width,
height,
format.PixelFormat,
mipSize / 6,
data + faceOffset);
}
else
{
GL.TexSubImage2D(
TextureTarget.TextureCubeMapPositiveX + face,
level,
0,
0,
width,
height,
format.PixelFormat,
format.PixelType,
data + faceOffset);
}
}
break;
}
data += mipSize;
offset += mipSize;
width = Math.Max(1, width >> 1);
height = Math.Max(1, height >> 1);
if (Target == Target.Texture3D)
{
depth = Math.Max(1, depth >> 1);
}
}
}
public void SetStorage(BufferRange buffer)
{
throw new NotSupportedException();
}
public void Dispose()
{
if (_incompatibleFormatView != null)
{
_incompatibleFormatView.Dispose();
_incompatibleFormatView = null;
}
if (Handle != 0)
{
GL.DeleteTexture(Handle);
_parent.DecrementViewsCount();
Handle = 0;
}
}
}
}