private void Initialize(TextureParams textureParams)
{
compressed = Format.IsCompressed();
GLHelper.GetGLTextureFormat(Context, Format, out GLInternalFormat, out GLFormat, out GLPixelType);
GLTexture = GL.GenTexture();
GLHelper.CheckGLErrors();
GL.ActiveTexture(TextureUnit.Texture0);
GLHelper.CheckGLErrors();
GL.BindTexture(TextureTarget.Texture2D, GLTexture);
GLHelper.CheckGLErrors();
for (var level = 0; level < LevelCount; level++)
{
GraphicsUtility.CalculateMipLevelSize(level, Width, Height, out var levelWidth, out var levelHeight);
if (compressed)
{
var imageSize = GraphicsUtility.CalculateImageDataSize(Format, levelWidth, levelHeight);
GL.CompressedTexImage2D(TextureTarget.Texture2D, level, (PixelInternalFormat)GLInternalFormat,
levelWidth, levelHeight, 0, imageSize, IntPtr.Zero);
GLHelper.CheckGLErrors();
}
else
{
GL.TexImage2D(TextureTarget.Texture2D, level, (PixelInternalFormat)GLInternalFormat,
levelWidth, levelHeight, 0, (PixelFormat)GLFormat, (PixelType)GLPixelType, IntPtr.Zero);
GLHelper.CheckGLErrors();
}
}
UpdateTextureParams(textureParams);
Context.InvalidateTextureBinding(0);
}
public static void SetData(this IPlatformTexture2D texture, int level, IntPtr data)
{
GraphicsUtility.CalculateMipLevelSize(level, texture.Width, texture.Height, out var levelWidth, out var levelHeight);
texture.SetData(level, 0, 0, levelWidth, levelHeight, data);
}
public static void SetData <T>(
this IPlatformTexture2D texture, int level, T[] data, int startIndex) where T : unmanaged
{
GraphicsUtility.CalculateMipLevelSize(level, texture.Width, texture.Height, out var levelWidth, out var levelHeight);
SetData(texture, level, 0, 0, levelWidth, levelHeight, data, startIndex);
}
