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.ImageSize);
default:
return(t.ImageSize);
}
}
public static int GenerateOpenGLTexture(RenderableTex t, Bitmap bitmap, bool generateMips = false)
{
if (!t.GLInitialized)
{
return(-1);
}
int texID = GL.GenTexture();
GL.BindTexture(t.TextureTarget, texID);
BitmapData data = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
bitmap.UnlockBits(data);
if (generateMips)
{
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
}
return(texID);
}
public void LoadCustomTexture(STGenericTexture GenericTexture)
{
CustomCubemap = GenericTexture.RenderableTex;
if (CustomCubemap == null || !CustomCubemap.GLInitialized)
{
GenericTexture.LoadOpenGLTexture();
}
}
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);
}
public static RenderableTex FromBitmap(Bitmap bitmap)
{
RenderableTex tex = new RenderableTex();
tex.TextureTarget = TextureTarget.Texture2D;
tex.TextureWrapS = TextureWrapMode.Repeat;
tex.TextureWrapT = TextureWrapMode.Repeat;
tex.TextureMinFilter = TextureMinFilter.Linear;
tex.TextureMagFilter = TextureMagFilter.Linear;
tex.width = bitmap.Width;
tex.height = bitmap.Height;
tex.pixelInternalFormat = PixelInternalFormat.Rgb8;
tex.pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
tex.GLInitialized = true;
tex.TexID = GenerateOpenGLTexture(tex, bitmap);
return(tex);
}
public static int GenerateOpenGLTexture(RenderableTex t, List <STGenericTexture.Surface> ImageData)
{
if (!t.GLInitialized)
{
return(-1);
}
int texID = GL.GenTexture();
GL.BindTexture(t.TextureTarget, texID);
if (t.IsCubeMap)
{
if (t.pixelInternalFormat != PixelInternalFormat.Rgba)
{
for (int mipLevel = 0; mipLevel < ImageData[0].mipmaps.Count; mipLevel++)
{
int width = Math.Max(1, t.width >> mipLevel);
int height = Math.Max(1, t.height >> mipLevel);
t.LoadCompressedMips(TextureTarget.TextureCubeMapPositiveX, ImageData[0], width, height, mipLevel);
t.LoadCompressedMips(TextureTarget.TextureCubeMapNegativeX, ImageData[1], width, height, mipLevel);
t.LoadCompressedMips(TextureTarget.TextureCubeMapPositiveY, ImageData[2], width, height, mipLevel);
t.LoadCompressedMips(TextureTarget.TextureCubeMapNegativeY, ImageData[3], width, height, mipLevel);
t.LoadCompressedMips(TextureTarget.TextureCubeMapPositiveZ, ImageData[4], width, height, mipLevel);
t.LoadCompressedMips(TextureTarget.TextureCubeMapNegativeZ, ImageData[5], width, height, mipLevel);
}
}
else
{
for (int mipLevel = 0; mipLevel < ImageData[0].mipmaps.Count; mipLevel++)
{
int width = Math.Max(1, t.width >> mipLevel);
int height = Math.Max(1, t.height >> mipLevel);
t.LoadUncompressedMips(TextureTarget.TextureCubeMapPositiveX, ImageData[0], width, height, mipLevel);
t.LoadUncompressedMips(TextureTarget.TextureCubeMapNegativeX, ImageData[1], width, height, mipLevel);
t.LoadUncompressedMips(TextureTarget.TextureCubeMapPositiveY, ImageData[2], width, height, mipLevel);
t.LoadUncompressedMips(TextureTarget.TextureCubeMapNegativeY, ImageData[3], width, height, mipLevel);
t.LoadUncompressedMips(TextureTarget.TextureCubeMapPositiveZ, ImageData[4], width, height, mipLevel);
t.LoadUncompressedMips(TextureTarget.TextureCubeMapNegativeZ, ImageData[5], width, height, mipLevel);
}
}
if (ImageData[0].mipmaps.Count == 1)
{
GL.GenerateMipmap(GenerateMipmapTarget.TextureCubeMap);
}
}
else
{
if (t.pixelInternalFormat != PixelInternalFormat.Rgba)
{
for (int mipLevel = 0; mipLevel < ImageData[0].mipmaps.Count; mipLevel++)
{
t.LoadCompressedMips(t.TextureTarget, ImageData[0], t.width, t.height, mipLevel);
}
}
else
{
for (int mipLevel = 0; mipLevel < ImageData[0].mipmaps.Count; mipLevel++)
{
t.LoadUncompressedMips(t.TextureTarget, ImageData[0], t.width, t.height, mipLevel);
}
}
if (ImageData[0].mipmaps.Count == 1)
{
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
}
}
return(texID);
}