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Switch-Toolbox/Switch_Toolbox_Library/Generics/RenderableTex.cs
2019-05-31 15:38:49 -04:00

208 lines
8.7 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Drawing;
using System.Threading.Tasks;
using OpenTK.Graphics.OpenGL;
using System.Runtime.InteropServices;
namespace Switch_Toolbox.Library.Rendering
{
public class RenderableTex
{
public int width, height;
public int TexID;
public PixelInternalFormat pixelInternalFormat;
public PixelFormat pixelFormat;
public PixelType pixelType = PixelType.UnsignedByte;
public byte[] data;
public bool GLInitialized = false;
public void Dispose()
{
GL.DeleteTexture(TexID);
data = null;
}
public void LoadOpenGLTexture(STGenericTexture GenericTexture)
{
if (!Runtime.OpenTKInitialized || GLInitialized || Runtime.UseLegacyGL)
return;
if (GenericTexture.ArrayCount <= 0)
{
throw new Exception($"No texture data found with texture {GenericTexture.Text}");
}
width = (int)GenericTexture.Width;
height = (int)GenericTexture.Height;
data = GenericTexture.GetImageData(0, 0);
if (data.Length <= 0)
throw new Exception("Data is empty!");
switch (GenericTexture.Format)
{
case TEX_FORMAT.BC1_UNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt1Ext;
break;
case TEX_FORMAT.BC1_UNORM_SRGB:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt1Ext;
break;
case TEX_FORMAT.BC2_UNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt3Ext;
break;
case TEX_FORMAT.BC2_UNORM_SRGB:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt3Ext;
break;
case TEX_FORMAT.BC3_UNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt5Ext;
break;
case TEX_FORMAT.BC3_UNORM_SRGB:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt5Ext;
break;
case TEX_FORMAT.BC4_UNORM:
case TEX_FORMAT.BC4_SNORM:
//Convert to rgb to prevent red output
//While shaders could prevent this, converting is easier and works fine across all editors
data = STGenericTexture.DecodeBlock(data,
GenericTexture.Width,
GenericTexture.Height,
GenericTexture.Format,
GenericTexture.PlatformSwizzle);
pixelInternalFormat = PixelInternalFormat.Rgba;
pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
// pixelInternalFormat = PixelInternalFormat.CompressedRedRgtc1;
// pixelInternalFormat = PixelInternalFormat.CompressedSignedRedRgtc1;
break;
case TEX_FORMAT.BC5_SNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRgRgtc2;
data = DDSCompressor.DecompressBC5(GenericTexture.GetImageData(0,0),
(int)GenericTexture.Width, (int)GenericTexture.Height, true, true);
pixelInternalFormat = PixelInternalFormat.Rgba;
pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
break;
case TEX_FORMAT.BC5_UNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRgRgtc2;
break;
case TEX_FORMAT.BC6H_UF16:
pixelInternalFormat = PixelInternalFormat.CompressedRgbBptcUnsignedFloat;
break;
case TEX_FORMAT.BC6H_SF16:
pixelInternalFormat = PixelInternalFormat.CompressedRgbBptcSignedFloat;
break;
case TEX_FORMAT.BC7_UNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRgbaBptcUnorm;
break;
case TEX_FORMAT.BC7_UNORM_SRGB:
pixelInternalFormat = PixelInternalFormat.CompressedSrgbAlphaBptcUnorm;
break;
case TEX_FORMAT.R8G8B8A8_UNORM:
pixelInternalFormat = PixelInternalFormat.Rgba;
pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
break;
case TEX_FORMAT.R8G8B8A8_UNORM_SRGB:
pixelInternalFormat = PixelInternalFormat.Rgba;
pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
break;
default:
data = STGenericTexture.DecodeBlock(data,
GenericTexture.Width,
GenericTexture.Height,
GenericTexture.Format,
GenericTexture.PlatformSwizzle);
pixelInternalFormat = PixelInternalFormat.Rgba;
pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
break;
}
GLInitialized = true;
TexID = loadImage(this);
}
public static int loadImage(RenderableTex t)
{
if (!t.GLInitialized)
return -1;
int texID = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, texID);
if (t.pixelInternalFormat != PixelInternalFormat.Rgba)
{
GL.CompressedTexImage2D<byte>(TextureTarget.Texture2D, 0, (InternalFormat)t.pixelInternalFormat,
t.width, t.height, 0, getImageSize(t), t.data);
//Debug.WriteLine(GL.GetError());
}
else
{
GL.TexImage2D<byte>(TextureTarget.Texture2D, 0, t.pixelInternalFormat, t.width, t.height, 0,
t.pixelFormat, PixelType.UnsignedByte, t.data);
}
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
return texID;
}
public void Bind()
{
GL.BindTexture(TextureTarget.Texture2D, TexID);
}
private static int getImageSize(RenderableTex t)
{
switch (t.pixelInternalFormat)
{
case PixelInternalFormat.CompressedRgbaS3tcDxt1Ext:
case PixelInternalFormat.CompressedSrgbAlphaS3tcDxt1Ext:
case PixelInternalFormat.CompressedRedRgtc1:
case PixelInternalFormat.CompressedSignedRedRgtc1:
return (t.width * t.height / 2);
case PixelInternalFormat.CompressedRgbaS3tcDxt3Ext:
case PixelInternalFormat.CompressedSrgbAlphaS3tcDxt3Ext:
case PixelInternalFormat.CompressedRgbaS3tcDxt5Ext:
case PixelInternalFormat.CompressedSrgbAlphaS3tcDxt5Ext:
case PixelInternalFormat.CompressedSignedRgRgtc2:
case PixelInternalFormat.CompressedRgRgtc2:
case PixelInternalFormat.CompressedRgbaBptcUnorm:
case PixelInternalFormat.CompressedSrgbAlphaBptcUnorm:
return (t.width * t.height);
case PixelInternalFormat.Rgba:
return t.data.Length;
default:
return t.data.Length;
}
}
public unsafe Bitmap ToBitmap()
{
Bitmap bitmap = new Bitmap(width, height);
System.Drawing.Imaging.BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, width, height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.BindTexture(TextureTarget.Texture2D, TexID);
GL.GetTexImage(TextureTarget.Texture2D, 0, OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bitmapData.Scan0);
bitmap.UnlockBits(bitmapData);
return bitmap;
}
public static unsafe Bitmap GLTextureToBitmap(RenderableTex t)
{
Bitmap bitmap = new Bitmap(t.width, t.height);
System.Drawing.Imaging.BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, t.width, t.height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.BindTexture(TextureTarget.Texture2D, t.TexID);
GL.GetTexImage(TextureTarget.Texture2D, 0, OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, bitmapData.Scan0);
bitmap.UnlockBits(bitmapData);
return bitmap;
}
}
}