public unsafe void ApplyColorKey(TexImage image, ColorKeyRequest request)
{
Log.Info("Apply color key [{0}]", request.ColorKey);
var colorKey = request.ColorKey;
var rowPtr = image.Data;
if (image.Format == PixelFormat.R8G8B8A8_UNorm)
{
for (int i = 0; i < image.Height; i++)
{
var colors = (Core.Mathematics.Color*)rowPtr;
for (int x = 0; x < image.Width; x++)
{
if (colors[x] == colorKey)
{
colors[x] = Core.Mathematics.Color.Transparent;
}
}
rowPtr = IntPtr.Add(rowPtr, image.RowPitch);
}
}
else if (image.Format == PixelFormat.B8G8R8A8_UNorm)
{
var rgbaColorKey = colorKey.ToRgba();
for (int i = 0; i < image.Height; i++)
{
var colors = (Core.Mathematics.ColorBGRA*)rowPtr;
for (int x = 0; x < image.Width; x++)
{
if (colors[x].ToRgba() == rgbaColorKey)
{
colors[x] = Core.Mathematics.Color.Transparent;
}
}
rowPtr = IntPtr.Add(rowPtr, image.RowPitch);
}
}
}
/// <summary>
/// Apply a color key on the image by replacing the color passed by to this method by a white transparent color (Alpha is 0).
/// </summary>
/// <param name="image">The image.</param>
/// <param name="colorKey">The color key.</param>
public void ColorKey(TexImage image, Color colorKey)
{
if (image.Format.IsCompressed())
{
Log.Warning("You can't compress an already compressed texture. It will be decompressed first..");
Decompress(image, image.Format.IsSRgb());
}
if (image.Format != PixelFormat.R8G8B8A8_UNorm && image.Format != PixelFormat.B8G8R8A8_UNorm
&& image.Format != PixelFormat.B8G8R8A8_UNorm_SRgb && image.Format != PixelFormat.R8G8B8A8_UNorm_SRgb)
{
Log.Error("ColorKey TextureConverter is only supporting R8G8B8A8_UNorm or B8G8R8A8_UNorm while Texture Format is [{0}]", image.Format);
return;
}
var request = new ColorKeyRequest(colorKey);
ExecuteRequest(image, request);
}
