/// <summary>
/// Generates the normal map.
/// </summary>
/// <param name="heightMap">The height map.</param>
/// <param name="amplitude">The amplitude.</param>
/// <returns>An instance of <see cref="TexImage"/> containig the normal map.</returns>
public TexImage GenerateNormalMap(TexImage heightMap, float amplitude)
{
if (amplitude <= 0)
{
Log.Error("The amplitude must be a positive float.");
throw new TextureToolsException("The amplitude must be a positive float.");
}
if (heightMap.Format.IsCompressed())
{
Log.Warning("You can't generate a normal map from a compressed height hmap. It will be decompressed first..");
Decompress(heightMap, heightMap.Format.IsSRgb());
}
var request = new NormalMapGenerationRequest(amplitude);
ExecuteRequest(heightMap, request);
return request.NormalMap;
}
public static void GenerateNormalMapTest(TexImage image, ITexLibrary library)
{
library.Execute(image, new DecompressingRequest(false));
var request = new NormalMapGenerationRequest(1);
library.Execute(image, request);
Assert.IsTrue(TestTools.ComputeSHA1(request.NormalMap.Data, request.NormalMap.DataSize).Equals(TestTools.GetInstance().Checksum["GenerateNormalMapTest_" + image.Name]));
//Console.WriteLine("GenerateNormalMapTest_" + image.Name + "." + TestTools.ComputeSHA1(request.NormalMap.Data, request.NormalMap.DataSize));
request.NormalMap.Dispose();
}
/// <summary>
/// Generates the normal map.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TexLibraryException">Failed to generate the normal map</exception>
public void GenerateNormalMap(TexImage image, DxtTextureLibraryData libraryData, NormalMapGenerationRequest request)
{
Log.Info("Generating Normal Map ... ");
ScratchImage scratchImage = new ScratchImage();
HRESULT hr = Utilities.ComputeNormalMap(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, CNMAP_FLAGS.CNMAP_CHANNEL_RED, request.Amplitude, DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM, scratchImage);
if (hr != HRESULT.S_OK)
{
Log.Error("Failed to generate the normal map : " + hr);
throw new TextureToolsException("Failed to generate the normal map : " + hr);
}
// Creating new TexImage with the normal map data.
request.NormalMap = new TexImage();
DxtTextureLibraryData normalMapLibraryData = new DxtTextureLibraryData();
request.NormalMap.LibraryData[this] = normalMapLibraryData;
normalMapLibraryData.DxtImages = scratchImage.GetImages();
normalMapLibraryData.Metadata = scratchImage.metadata;
normalMapLibraryData.Image = scratchImage;
UpdateImage(request.NormalMap, normalMapLibraryData);
request.NormalMap.DisposingLibrary = this;
}
/// <summary>
/// Generates the normal map.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TexLibraryException">Failed to generate normal map.</exception>
public void GenerateNormalMap(TexImage image, PvrTextureLibraryData libraryData, NormalMapGenerationRequest request)
{
Log.Info("Generating Normal Map ... ");
// Creating new TexImage with the normal map data.
request.NormalMap = new TexImage();
PvrTextureLibraryData normalMapLibraryData = new PvrTextureLibraryData();
request.NormalMap.LibraryData[this] = normalMapLibraryData;
normalMapLibraryData.Texture = new PVRTexture(libraryData.Header, libraryData.Texture.GetDataPtr());
request.NormalMap.Format = SiliconStudio.Paradox.Graphics.PixelFormat.R8G8B8A8_UNorm;
request.NormalMap.CurrentLibrary = this;
request.NormalMap.DisposingLibrary = this;
if (!Utilities.GenerateNormalMap(normalMapLibraryData.Texture, request.Amplitude, "xyzh"))
{
Log.Error("Failed to generate normal map.");
throw new TextureToolsException("Failed to generate normal map.");
}
UpdateImage(request.NormalMap, normalMapLibraryData);
EndLibrary(request.NormalMap);
request.NormalMap.DisposingLibrary = this;
}
