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using OpenTK.Graphics.OpenGL;
using Ryujinx.Graphics.Texture;
using System;
namespace Ryujinx.Graphics.Gal.OpenGL
{
class ImageHandler
{
private static int CopyBuffer = 0;
private static int CopyBufferSize = 0;
public GalImage Image { get; private set; }
public int Width => Image.Width;
public int Height => Image.Height;
public GalImageFormat Format => Image.Format;
public PixelInternalFormat InternalFormat { get; private set; }
public PixelFormat PixelFormat { get; private set; }
public PixelType PixelType { get; private set; }
public int Handle { get; private set; }
private bool Initialized;
public ImageHandler()
{
Handle = GL.GenTexture();
}
public ImageHandler(int Handle, GalImage Image)
{
this.Handle = Handle;
this.Image = Image;
}
public void EnsureSetup(GalImage NewImage)
{
if (Width == NewImage.Width &&
Height == NewImage.Height &&
Format == NewImage.Format &&
Initialized)
{
return;
}
PixelInternalFormat InternalFmt;
PixelFormat PixelFormat;
PixelType PixelType;
if (ImageUtils.IsCompressed(NewImage.Format))
{
InternalFmt = (PixelInternalFormat)OGLEnumConverter.GetCompressedImageFormat(NewImage.Format);
PixelFormat = default(PixelFormat);
PixelType = default(PixelType);
}
else
{
(InternalFmt, PixelFormat, PixelType) = OGLEnumConverter.GetImageFormat(NewImage.Format);
}
GL.BindTexture(TextureTarget.Texture2D, Handle);
if (Initialized)
{
if (CopyBuffer == 0)
{
CopyBuffer = GL.GenBuffer();
}
int CurrentSize = Math.Max(ImageUtils.GetSize(NewImage),
ImageUtils.GetSize(Image));
GL.BindBuffer(BufferTarget.PixelPackBuffer, CopyBuffer);
GL.BindBuffer(BufferTarget.PixelUnpackBuffer, CopyBuffer);
if (CopyBufferSize < CurrentSize)
{
CopyBufferSize = CurrentSize;
GL.BufferData(BufferTarget.PixelPackBuffer, CurrentSize, IntPtr.Zero, BufferUsageHint.StreamCopy);
}
if (ImageUtils.IsCompressed(Image.Format))
{
GL.GetCompressedTexImage(TextureTarget.Texture2D, 0, IntPtr.Zero);
}
else
{
GL.GetTexImage(TextureTarget.Texture2D, 0, this.PixelFormat, this.PixelType, IntPtr.Zero);
}
GL.DeleteTexture(Handle);
Handle = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, Handle);
}
const int MinFilter = (int)TextureMinFilter.Linear;
const int MagFilter = (int)TextureMagFilter.Linear;
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, MinFilter);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, MagFilter);
const int Level = 0;
const int Border = 0;
if (ImageUtils.IsCompressed(NewImage.Format))
{
Console.WriteLine("Hit");
GL.CompressedTexImage2D(
TextureTarget.Texture2D,
Level,
(InternalFormat)InternalFmt,
NewImage.Width,
NewImage.Height,
Border,
ImageUtils.GetSize(NewImage),
IntPtr.Zero);
}
else
{
GL.TexImage2D(
TextureTarget.Texture2D,
Level,
InternalFmt,
NewImage.Width,
NewImage.Height,
Border,
PixelFormat,
PixelType,
IntPtr.Zero);
}
if (Initialized)
{
GL.BindBuffer(BufferTarget.PixelPackBuffer, 0);
GL.BindBuffer(BufferTarget.PixelUnpackBuffer, 0);
}
Image = NewImage;
this.InternalFormat = InternalFmt;
this.PixelFormat = PixelFormat;
this.PixelType = PixelType;
Initialized = true;
}
public bool HasColor => ImageUtils.HasColor(Image.Format);
public bool HasDepth => ImageUtils.HasDepth(Image.Format);
public bool HasStencil => ImageUtils.HasStencil(Image.Format);
}
}
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