/// <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.Verbose("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>
/// Premultiplies the alpha.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
public void PreMultiplyAlpha(TexImage image, DxtTextureLibraryData libraryData)
{
Log.Verbose("Premultiplying alpha ... ");
ScratchImage scratchImage = new ScratchImage();
HRESULT hr = Utilities.PremultiplyAlpha(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, TEX_PREMULTIPLY_ALPHA_FLAGS.TEX_PMALPHA_DEFAULT, scratchImage);
if (hr != HRESULT.S_OK)
{
Log.Error("Failed to premultiply the alpha : " + hr);
throw new TextureToolsException("Failed to premultiply the alpha : " + hr);
}
// Freeing Memory
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
libraryData.Image = scratchImage;
libraryData.Metadata = libraryData.Image.metadata;
libraryData.DxtImages = libraryData.Image.GetImages();
image.DisposingLibrary = this;
UpdateImage(image, libraryData);
}
/// <summary>
/// Decompresses the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The decompression request</param>
/// <exception cref="TextureToolsException">Decompression failed</exception>
private void Decompress(TexImage image, DxtTextureLibraryData libraryData, DecompressingRequest request)
{
Log.Verbose("Decompressing texture ...");
// determine the output format to avoid any sRGB/RGB conversions (only decompression, no conversion)
var outputFormat = !((PixelFormat)libraryData.Metadata.format).IsSRgb() ? request.DecompressedFormat.ToNonSRgb() : request.DecompressedFormat.ToSRgb();
var scratchImage = new ScratchImage();
var hr = Utilities.Decompress(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, (DXGI_FORMAT)outputFormat, scratchImage);
if (hr != HRESULT.S_OK)
{
Log.Error("Decompression failed: " + hr);
throw new TextureToolsException("Decompression failed: " + hr);
}
// Freeing Memory
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
libraryData.Image = scratchImage;
libraryData.DxtImages = libraryData.Image.GetImages();
libraryData.Metadata = libraryData.Image.metadata;
image.DisposingLibrary = this;
// adapt the image format based on desired output format
ChangeDxtImageType(libraryData, (DXGI_FORMAT)request.DecompressedFormat);
UpdateImage(image, libraryData);
}
/// <summary>
/// Convert the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The decompression request</param>
/// <exception cref="TextureToolsException">Decompression failed</exception>
private void Convert(TexImage image, DxtTextureLibraryData libraryData, ConvertingRequest request)
{
// TODO: temp if request format is SRGB we force it to non-srgb to perform the conversion. Will not work if texture input is SRGB
var outputFormat = request.Format.IsSRgb() ? request.Format.ToNonSRgb() : request.Format;
Log.Verbose($"Converting texture from {(PixelFormat)libraryData.Metadata.format} to {outputFormat}");
var scratchImage = new ScratchImage();
var hr = Utilities.Convert(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, (DXGI_FORMAT)outputFormat, TEX_FILTER_FLAGS.TEX_FILTER_BOX, 0.0f, scratchImage);
if (hr != HRESULT.S_OK)
{
Log.Error("Converting failed: " + hr);
throw new TextureToolsException("Converting failed: " + hr);
}
// Freeing Memory
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
libraryData.Image = scratchImage;
libraryData.DxtImages = libraryData.Image.GetImages();
libraryData.Metadata = libraryData.Image.metadata;
image.DisposingLibrary = this;
// adapt the image format based on desired output format
ChangeDxtImageType(libraryData, (DXGI_FORMAT)request.Format);
UpdateImage(image, libraryData);
}
/// <summary>
/// Rescales the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TexLibraryException">Rescaling failed</exception>
private void Rescale(TexImage image, DxtTextureLibraryData libraryData, RescalingRequest request)
{
int width = request.ComputeWidth(image);
int height = request.ComputeHeight(image);
Log.Verbose("Rescaling to " + width + "x" + height + " ...");
TEX_FILTER_FLAGS filter;
switch (request.Filter)
{
case Filter.Rescaling.Bilinear:
filter = TEX_FILTER_FLAGS.TEX_FILTER_LINEAR;
break;
case Filter.Rescaling.Bicubic:
filter = TEX_FILTER_FLAGS.TEX_FILTER_CUBIC;
break;
case Filter.Rescaling.Box:
filter = TEX_FILTER_FLAGS.TEX_FILTER_FANT;
break;
case Filter.Rescaling.Nearest:
filter = TEX_FILTER_FLAGS.TEX_FILTER_POINT;
break;
default:
filter = TEX_FILTER_FLAGS.TEX_FILTER_FANT;
break;
}
ScratchImage scratchImage = new ScratchImage();
HRESULT hr = Utilities.Resize(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, width, height, filter, scratchImage);
if (hr != HRESULT.S_OK)
{
Log.Error("Rescaling failed: " + hr);
throw new TextureToolsException("Rescaling failed: " + hr);
}
// Freeing Memory
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
// Updating image data
image.Rescale(width, height);
libraryData.Image = scratchImage;
libraryData.DxtImages = libraryData.Image.GetImages();
libraryData.Metadata = libraryData.Image.metadata;
image.DisposingLibrary = this;
UpdateImage(image, libraryData);
}
/// <summary>
/// Compresses the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TextureToolsException">Compression failed</exception>
private void Compress(TexImage image, DxtTextureLibraryData libraryData, CompressingRequest request)
{
Log.Verbose("Converting/Compressing with " + request.Format + " ...");
if (libraryData.DxtImages == null || libraryData.DxtImages.Length == 0)
{
return;
}
ScratchImage scratchImage = new ScratchImage();
HRESULT hr;
if (request.Format.IsCompressed())
{
var topImage = libraryData.DxtImages[0];
if (topImage.Width % 4 != 0 || topImage.Height % 4 != 0)
{
throw new TextureToolsException(string.Format("The provided texture cannot be compressed into format '{0}' " +
"because its top resolution ({1}-{2}) is not a multiple of 4.", request.Format, topImage.Width, topImage.Height));
}
hr = Utilities.Compress(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata,
RetrieveNativeFormat(request.Format), TEX_COMPRESS_FLAGS.TEX_COMPRESS_DEFAULT, 0.5f, scratchImage);
}
else
{
hr = Utilities.Convert(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata,
RetrieveNativeFormat(request.Format), TEX_FILTER_FLAGS.TEX_FILTER_DEFAULT, 0.5f, scratchImage);
}
if (hr != HRESULT.S_OK)
{
Log.Error("Compression failed: " + hr);
throw new TextureToolsException("Compression failed: " + hr);
}
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
// Updating attributes
libraryData.Image = scratchImage;
libraryData.DxtImages = libraryData.Image.GetImages();
libraryData.Metadata = libraryData.Image.metadata;
image.DisposingLibrary = this;
UpdateImage(image, libraryData);
}
/// <summary>
/// Exports the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TexLibraryException">
/// Exporting texture failed
/// </exception>
private void Export(TexImage image, DxtTextureLibraryData libraryData, ExportRequest request)
{
Log.Verbose("Exporting to " + request.FilePath + " ...");
if (request.MinimumMipMapSize > 1 && request.MinimumMipMapSize <= libraryData.Metadata.Width && request.MinimumMipMapSize <= libraryData.Metadata.Height) // if a mimimun mipmap size was requested
{
TexMetadata metadata = libraryData.Metadata;
DxtImage[] dxtImages;
if (image.Dimension == TexImage.TextureDimension.Texture3D)
{
int newMipMapCount = 0; // the new mipmap count
int ct = 0; // ct will contain the number of SubImages per array element that we need to keep
int curDepth = image.Depth << 1;
for (int i = 0; i < image.MipmapCount; ++i)
{
curDepth = curDepth > 1 ? curDepth >>= 1 : curDepth;
if (libraryData.DxtImages[ct].Width <= request.MinimumMipMapSize || libraryData.DxtImages[ct].Height <= request.MinimumMipMapSize)
{
ct += curDepth;
++newMipMapCount;
break;
}
++newMipMapCount;
ct += curDepth;
}
int SubImagePerArrayElement = image.SubImageArray.Length / image.ArraySize; // number of SubImage in each texture array element.
// Initializing library native data according to the new mipmap level
metadata.MipLevels = newMipMapCount;
dxtImages = new DxtImage[metadata.ArraySize * ct];
int ct2 = 0;
for (int i = 0; i < image.ArraySize; ++i)
{
for (int j = 0; j < ct; ++j)
{
dxtImages[ct2] = libraryData.DxtImages[j + i * SubImagePerArrayElement];
++ct2;
}
}
}
else
{
int newMipMapCount = libraryData.Metadata.MipLevels;
for (int i = libraryData.Metadata.MipLevels - 1; i > 0; --i) // looking for the mipmap level corresponding to the minimum size requeted.
{
if (libraryData.DxtImages[i].Width >= request.MinimumMipMapSize || libraryData.DxtImages[i].Height >= request.MinimumMipMapSize)
{
break;
}
--newMipMapCount;
}
// Initializing library native data according to the new mipmap level
metadata.MipLevels = newMipMapCount;
dxtImages = new DxtImage[metadata.ArraySize * newMipMapCount];
// Assigning the right sub images for the texture to be exported (no need for memory to be adjacent)
int gap = libraryData.Metadata.MipLevels - newMipMapCount;
int j = 0;
for (int i = 0; i < dxtImages.Length; ++i)
{
if (i == newMipMapCount || (i > newMipMapCount && i % newMipMapCount == 0))
{
j += gap;
}
dxtImages[i] = libraryData.DxtImages[j];
++j;
}
}
HRESULT hr = Utilities.SaveToDDSFile(dxtImages, dxtImages.Length, ref metadata, DDS_FLAGS.DDS_FLAGS_NONE, request.FilePath);
if (hr != HRESULT.S_OK)
{
Log.Error("Exporting texture failed: " + hr);
throw new TextureToolsException("Exporting texture failed: " + hr);
}
}
else
{
HRESULT hr = Utilities.SaveToDDSFile(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, DDS_FLAGS.DDS_FLAGS_NONE, request.FilePath);
if (hr != HRESULT.S_OK)
{
Log.Error("Exporting texture failed: " + hr);
throw new TextureToolsException("Exporting texture failed: " + hr);
}
}
image.Save(request.FilePath);
}
/// <summary>
/// Generates the mip maps.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="libraryData">The library data.</param>
/// <param name="request">The request.</param>
/// <exception cref="TexLibraryException">
/// Not implemented !
/// or
/// Mipmaps generation failed
/// </exception>
private void GenerateMipMaps(TexImage image, DxtTextureLibraryData libraryData, MipMapsGenerationRequest request)
{
Log.Verbose("Generating Mipmaps ... ");
var filter = TEX_FILTER_FLAGS.TEX_FILTER_DEFAULT;
switch (request.Filter)
{
case Filter.MipMapGeneration.Nearest:
filter |= TEX_FILTER_FLAGS.TEX_FILTER_POINT;
break;
case Filter.MipMapGeneration.Linear:
filter |= TEX_FILTER_FLAGS.TEX_FILTER_LINEAR;
break;
case Filter.MipMapGeneration.Cubic:
filter |= TEX_FILTER_FLAGS.TEX_FILTER_CUBIC;
break;
case Filter.MipMapGeneration.Box:
// Box filter is supported only for power of two textures
filter |= image.IsPowerOfTwo() ? TEX_FILTER_FLAGS.TEX_FILTER_FANT : TEX_FILTER_FLAGS.TEX_FILTER_LINEAR;
break;
default:
filter |= TEX_FILTER_FLAGS.TEX_FILTER_FANT;
break;
}
// Don't use WIC if we have a Float texture as mipmaps are clamped to [0, 1]
// TODO: Report bug to DirectXTex
var isPowerOfTwoAndFloat = image.IsPowerOfTwo() && (image.Format == PixelFormat.R16G16_Float || image.Format == PixelFormat.R16G16B16A16_Float);
if (isPowerOfTwoAndFloat)
{
filter = TEX_FILTER_FLAGS.TEX_FILTER_FORCE_NON_WIC;
}
HRESULT hr;
var scratchImage = new ScratchImage();
if (libraryData.Metadata.dimension == TEX_DIMENSION.TEX_DIMENSION_TEXTURE3D)
{
Log.Verbose("Only the box and nearest(point) filters are supported for generating Mipmaps with 3D texture.");
if ((filter & TEX_FILTER_FLAGS.TEX_FILTER_FANT) == 0 && (filter & TEX_FILTER_FLAGS.TEX_FILTER_POINT) == 0)
{
filter = (TEX_FILTER_FLAGS)((int)filter & 0xf00000);
filter |= TEX_FILTER_FLAGS.TEX_FILTER_FANT;
}
hr = Utilities.GenerateMipMaps3D(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, filter, 0, scratchImage);
}
else
{
hr = Utilities.GenerateMipMaps(libraryData.DxtImages, libraryData.DxtImages.Length, ref libraryData.Metadata, filter, 0, scratchImage);
}
if (hr != HRESULT.S_OK)
{
Log.Error("Mipmaps generation failed: " + hr);
throw new TextureToolsException("Mipmaps generation failed: " + hr);
}
// Freeing Memory
if (image.DisposingLibrary != null)
{
image.DisposingLibrary.Dispose(image);
}
libraryData.Image = scratchImage;
libraryData.Metadata = libraryData.Image.metadata;
libraryData.DxtImages = libraryData.Image.GetImages();
image.DisposingLibrary = this;
UpdateImage(image, libraryData);
}
/// <summary>
/// Loads the specified image.
/// </summary>
/// <param name="image">The image.</param>
/// <param name="loader">The loader.</param>
/// <exception cref="TextureToolsException">Loading dds file failed</exception>
private void Load(TexImage image, LoadingRequest loader)
{
Log.Verbose("Loading " + loader.FilePath + " ...");
var libraryData = new DxtTextureLibraryData();
image.LibraryData[this] = libraryData;
libraryData.Image = new ScratchImage();
libraryData.Metadata = new TexMetadata();
var extension = Path.GetExtension(loader.FilePath);
HRESULT hr = 0;
if (extension.EndsWith(".dds", StringComparison.InvariantCultureIgnoreCase))
{
hr = Utilities.LoadDDSFile(loader.FilePath, DDS_FLAGS.DDS_FLAGS_NONE, out libraryData.Metadata, libraryData.Image);
}
else if (extension.EndsWith(".tga", StringComparison.InvariantCultureIgnoreCase))
{
hr = Utilities.LoadTGAFile(loader.FilePath, out libraryData.Metadata, libraryData.Image);
}
else
{
hr = Utilities.LoadWICFile(loader.FilePath, WIC_FLAGS.WIC_FLAGS_NONE, out libraryData.Metadata, libraryData.Image);
}
if (hr != HRESULT.S_OK)
{
Log.Error("Loading dds file " + loader.FilePath + " failed: " + hr);
throw new TextureToolsException("Loading dds file " + loader.FilePath + " failed: " + hr);
}
libraryData.DxtImages = libraryData.Image.GetImages();
// adapt the image format based on whether input image is sRGB or not
var format = (PixelFormat)libraryData.Metadata.format;
ChangeDxtImageType(libraryData, (DXGI_FORMAT)(loader.LoadAsSRgb ? format.ToSRgb() : format.ToNonSRgb()));
image.DisposingLibrary = this;
if (libraryData.Metadata.miscFlags == TEX_MISC_FLAG.TEX_MISC_TEXTURECUBE)
{
image.Dimension = TexImage.TextureDimension.TextureCube;
}
else
{
switch (libraryData.Metadata.dimension)
{
case TEX_DIMENSION.TEX_DIMENSION_TEXTURE1D:
image.Dimension = TexImage.TextureDimension.Texture1D; break;
case TEX_DIMENSION.TEX_DIMENSION_TEXTURE2D:
image.Dimension = TexImage.TextureDimension.Texture2D; break;
case TEX_DIMENSION.TEX_DIMENSION_TEXTURE3D:
image.Dimension = TexImage.TextureDimension.Texture3D; break;
}
}
UpdateImage(image, libraryData);
var alphaSize = DDSHeader.GetAlphaDepth(loader.FilePath);
image.OriginalAlphaDepth = alphaSize != -1 ? alphaSize : image.Format.AlphaSizeInBits();
}