public static GLTexture2DArray FromRawData(int width, int height, TexFormat format, byte[] data)
{
GLTexture2DArray texture = new GLTexture2DArray();
texture.Width = width; texture.Height = height;
texture.LoadImage(width, height, format, data);
return(texture);
}
public static GLTexture2DArray FromBitmap(Bitmap image)
{
GLTexture2DArray texture = new GLTexture2DArray();
texture.Width = image.Width; texture.Height = image.Height;
texture.LoadImage(image);
return(texture);
}
public static GLTexture2DArray FromGeneric(STGenericTexture texture, ImageParameters parameters)
{
GLTexture2DArray glTexture = new GLTexture2DArray();
glTexture.Width = (int)texture.Width;
glTexture.Height = (int)texture.Height;
glTexture.LoadImage(texture, parameters);
return(glTexture);
}
public static GLTexture2DArray FromDDS(DDS dds)
{
GLTexture2DArray texture = new GLTexture2DArray();
texture.Width = (int)dds.Width; texture.Height = (int)dds.Height;
texture.Bind();
GL.TexParameter(texture.Target, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(texture.Target, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
GL.TexParameter(texture.Target, TextureParameterName.TextureBaseLevel, 0);
GL.TexParameter(texture.Target, TextureParameterName.TextureMaxLevel, 13);
GL.TexParameter(texture.Target, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(texture.Target, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(texture.Target, TextureParameterName.TextureWrapR, (int)TextureWrapMode.ClampToEdge);
InternalFormat format = InternalFormat.Rgba8;
for (int j = 0; j < dds.MipCount; j++)
{
int mipWidth = CalculateMipDimension(texture.Width, j);
int mipHeight = CalculateMipDimension(texture.Height, j);
int imageSize = GLFormatHelper.CalculateImageSize(mipWidth, mipHeight, format) * (int)dds.ArrayCount;
List <byte[]> levels = new List <byte[]>();
for (int i = 0; i < dds.ArrayCount; i++)
{
var data = dds.GetDecodedSurface(i, j);
if (i == 0 || i == 1)
{
data = FlipHorizontal(mipWidth, mipHeight, data);
}
levels.Add(data);
}
var surface = ByteUtils.CombineArray(levels.ToArray());
if (format == InternalFormat.Rgba8)
{
GL.TexImage3D(TextureTarget.Texture2DArray, j,
PixelInternalFormat.Rgba,
mipWidth, mipHeight, (int)dds.ArrayCount, 0, PixelFormat.Bgra, PixelType.UnsignedByte,
surface);
}
else
{
GL.CompressedTexImage3D(TextureTarget.Texture2DArray, j,
format,
mipWidth, mipHeight, (int)dds.ArrayCount,
0, imageSize, surface);
}
}
texture.Unbind();
return(texture);
}
public static GLTexture FromGenericTexture(STGenericTexture texture, ImageParameters parameters = null)
{
if (parameters == null)
{
parameters = new ImageParameters();
}
switch (texture.SurfaceType)
{
case STSurfaceType.Texture2D_Array:
return(GLTexture2DArray.FromGeneric(texture, parameters));
case STSurfaceType.Texture3D:
return(GLTexture3D.FromGeneric(texture, parameters));
case STSurfaceType.TextureCube:
return(GLTextureCube.FromGeneric(texture, parameters));
default:
return(GLTexture2D.FromGeneric(texture, parameters));
}
}
public static GLTexture2DArray CreateUncompressedTexture(int width, int height, int arrayCount, int mipCount,
PixelInternalFormat pixelInternalFormat = PixelInternalFormat.Rgba8,
PixelFormat pixelFormat = PixelFormat.Rgba,
PixelType pixelType = PixelType.UnsignedByte)
{
GLTexture2DArray texture = new GLTexture2DArray();
texture.PixelFormat = pixelFormat;
texture.PixelType = pixelType;
texture.PixelInternalFormat = pixelInternalFormat;
texture.Width = width; texture.Height = height;
texture.Target = TextureTarget.Texture2DArray;
texture.MinFilter = TextureMinFilter.LinearMipmapLinear;
texture.MagFilter = TextureMagFilter.Linear;
texture.MipCount = mipCount;
texture.ArrayCount = arrayCount;
texture.Bind();
//Allocate mip data
if (texture.MipCount > 1)
{
texture.GenerateMipmaps();
}
for (int mip = 0; mip < texture.MipCount; mip++)
{
int mipWidth = (int)(texture.Width * Math.Pow(0.5, mip));
int mipHeight = (int)(texture.Height * Math.Pow(0.5, mip));
GL.TexImage3D(texture.Target, 0, texture.PixelInternalFormat,
mipWidth, mipHeight, texture.ArrayCount, mip,
texture.PixelFormat, texture.PixelType, IntPtr.Zero);
}
texture.UpdateParameters();
texture.Unbind();
return(texture);
}
