/// <summary>
/// Function to build a sampler state from the information provided by the sprite data.
/// </summary>
/// <param name="graphics">The graphics interface to use.</param>
/// <param name="filter">The filter to use.</param>
/// <param name="borderColor">The color of the border to use.</param>
/// <param name="hWrap">Horizontal wrapping mode.</param>
/// <param name="vWrap">Vertical wrapping mode.</param>
/// <returns>The sampler state.</returns>
private static GorgonSamplerState CreateSamplerState(GorgonGraphics graphics, SampleFilter filter, GorgonColor borderColor, TextureWrap hWrap, TextureWrap vWrap)
{
var builder = new GorgonSamplerStateBuilder(graphics);
switch (filter)
{
case SampleFilter.MinMagMipLinear when(hWrap == TextureWrap.Clamp) && (vWrap == TextureWrap.Clamp) && (borderColor == GorgonColor.White):
return(null);
case SampleFilter.MinMagMipPoint when(hWrap == TextureWrap.Clamp) && (vWrap == TextureWrap.Clamp) && (borderColor == GorgonColor.White):
return(GorgonSamplerState.PointFiltering);
case SampleFilter.MinMagMipLinear when(hWrap == TextureWrap.Wrap) && (vWrap == TextureWrap.Wrap) && (borderColor == GorgonColor.White):
return(GorgonSamplerState.Wrapping);
case SampleFilter.MinMagMipPoint when(hWrap == TextureWrap.Wrap) && (vWrap == TextureWrap.Wrap) && (borderColor == GorgonColor.White):
return(GorgonSamplerState.PointFilteringWrapping);
default:
return(builder.Wrapping(hWrap, vWrap, borderColor: borderColor)
.Filter(filter)
.Build());
}
}
/// <summary>
/// Function to read the sprite data from a stream.
/// </summary>
/// <param name="stream">The stream containing the sprite.</param>
/// <param name="byteCount">The number of bytes to read from the stream.</param>
/// <param name="overrideTexture">The texture to assign to the sprite instead of the texture associated with the name stored in the file.</param>
/// <returns>A new <see cref="GorgonSprite"/>.</returns>
protected override GorgonSprite OnReadFromStream(Stream stream, int byteCount, GorgonTexture2DView overrideTexture)
{
var reader = new GorgonChunkFileReader(stream,
new[]
{
CurrentFileHeader
});
GorgonBinaryReader binReader = null;
var sprite = new GorgonSprite();
try
{
reader.Open();
binReader = reader.OpenChunk(SpriteData);
sprite.Size = binReader.ReadValue <DX.Size2F>();
sprite.Anchor = binReader.ReadValue <DX.Vector2>();
// If we do not have alpha test information, then skip writing its data.
if (binReader.ReadBoolean())
{
sprite.AlphaTest = binReader.ReadValue <GorgonRangeF>();
}
// Write out corner data.
sprite.CornerOffsets.UpperLeft = binReader.ReadValue <DX.Vector3>();
sprite.CornerOffsets.UpperRight = binReader.ReadValue <DX.Vector3>();
sprite.CornerOffsets.LowerLeft = binReader.ReadValue <DX.Vector3>();
sprite.CornerOffsets.LowerRight = binReader.ReadValue <DX.Vector3>();
sprite.CornerColors.UpperLeft = binReader.ReadValue <GorgonColor>();
sprite.CornerColors.UpperRight = binReader.ReadValue <GorgonColor>();
sprite.CornerColors.LowerLeft = binReader.ReadValue <GorgonColor>();
sprite.CornerColors.LowerRight = binReader.ReadValue <GorgonColor>();
reader.CloseChunk();
if (reader.Chunks.Contains(TextureData))
{
binReader = reader.OpenChunk(TextureData);
sprite.Texture = LoadTexture(binReader, overrideTexture, out DX.RectangleF textureCoordinates, out int textureArrayIndex);
sprite.TextureRegion = textureCoordinates;
sprite.TextureArrayIndex = textureArrayIndex;
reader.CloseChunk();
}
if (!reader.Chunks.Contains(TextureSamplerData))
{
return(sprite);
}
var builder = new GorgonSamplerStateBuilder(Renderer.Graphics);
binReader = reader.OpenChunk(TextureSamplerData);
binReader.ReadValue(out SampleFilter filter);
binReader.ReadValue(out GorgonColor borderColor);
binReader.ReadValue(out Comparison compareFunc);
binReader.ReadValue(out TextureWrap wrapU);
binReader.ReadValue(out TextureWrap wrapV);
binReader.ReadValue(out TextureWrap wrapW);
binReader.ReadValue(out int maxAnisotropy);
binReader.ReadValue(out float minLod);
binReader.ReadValue(out float maxLod);
binReader.ReadValue(out float mipLodBias);
reader.CloseChunk();
sprite.TextureSampler = builder.Wrapping(wrapU, wrapV, wrapW, borderColor)
.Filter(filter)
.ComparisonFunction(compareFunc)
.MaxAnisotropy(maxAnisotropy)
.MipLevelOfDetail(minLod, maxLod, mipLodBias)
.Build();
return(sprite);
}
finally
{
binReader?.Dispose();
reader.Close();
}
}
/// <summary>
/// Function to read the sprite data from a stream.
/// </summary>
/// <param name="stream">The stream containing the sprite.</param>
/// <param name="byteCount">The number of bytes to read from the stream.</param>
/// <param name="overrideTexture">The texture to assign to the sprite instead of the texture associated with the name stored in the file.</param>
/// <returns>A new <see cref="GorgonPolySprite"/>.</returns>
protected override GorgonPolySprite OnReadFromStream(Stream stream, int byteCount, GorgonTexture2DView overrideTexture)
{
var reader = new GorgonChunkFileReader(stream,
new[]
{
CurrentFileHeader
});
GorgonBinaryReader binReader = null;
var sprite = new GorgonPolySpriteBuilder(Renderer);
try
{
reader.Open();
binReader = reader.OpenChunk(SpriteData);
sprite.Anchor(binReader.ReadValue <DX.Vector2>());
// If we do not have alpha test information, then skip writing its data.
if (binReader.ReadBoolean())
{
sprite.AlphaTest(binReader.ReadValue <GorgonRangeF>());
}
reader.CloseChunk();
binReader = reader.OpenChunk(VertexData);
int vertexCount = binReader.ReadInt32();
for (int i = 0; i < vertexCount; ++i)
{
sprite.AddVertex(new GorgonPolySpriteVertex(binReader.ReadValue <DX.Vector2>(),
binReader.ReadValue <GorgonColor>(),
binReader.ReadValue <DX.Vector2>()));
}
reader.CloseChunk();
if (reader.Chunks.Contains(TextureData))
{
binReader = reader.OpenChunk(TextureData);
sprite.Texture(LoadTexture(binReader, overrideTexture, out DX.Vector2 textureOffset, out DX.Vector2 textureScale, out int textureArrayIndex));
sprite.TextureArrayIndex(textureArrayIndex);
sprite.TextureTransform(textureOffset, textureScale);
reader.CloseChunk();
}
if (!reader.Chunks.Contains(TextureSamplerData))
{
return(sprite.Build());
}
var builder = new GorgonSamplerStateBuilder(Renderer.Graphics);
binReader = reader.OpenChunk(TextureSamplerData);
binReader.ReadValue(out SampleFilter filter);
binReader.ReadValue(out GorgonColor borderColor);
binReader.ReadValue(out Comparison compareFunc);
binReader.ReadValue(out TextureWrap wrapU);
binReader.ReadValue(out TextureWrap wrapV);
binReader.ReadValue(out TextureWrap wrapW);
binReader.ReadValue(out int maxAnisotropy);
binReader.ReadValue(out float minLod);
binReader.ReadValue(out float maxLod);
binReader.ReadValue(out float mipLodBias);
reader.CloseChunk();
sprite.TextureSampler(builder.Wrapping(wrapU, wrapV, wrapW, borderColor)
.Filter(filter)
.ComparisonFunction(compareFunc)
.MaxAnisotropy(maxAnisotropy)
.MipLevelOfDetail(minLod, maxLod, mipLodBias)
.Build());
return(sprite.Build());
}
finally
{
binReader?.Dispose();
reader.Close();
}
}
/// <summary>Reads the JSON representation of the object.</summary>
/// <param name="reader">The <see cref="T:Newtonsoft.Json.JsonReader" /> to read from.</param>
/// <param name="objectType">Type of the object.</param>
/// <param name="existingValue">The existing value of object being read. If there is no existing value then <c>null</c> will be used.</param>
/// <param name="hasExistingValue">The existing value has a value.</param>
/// <param name="serializer">The calling serializer.</param>
/// <returns>The object value.</returns>
public override GorgonSamplerState ReadJson(JsonReader reader, Type objectType, GorgonSamplerState existingValue, bool hasExistingValue, JsonSerializer serializer)
{
if ((reader.TokenType != JsonToken.StartObject) ||
(_graphics == null))
{
return(null);
}
GorgonColor? borderColor = null;
Comparison? compareFunction = null;
SampleFilter?filter = null;
int? maxAnisotropy = null;
float? maxLod = null;
float? minLod = null;
float? mipLodBias = null;
TextureWrap? wrapU = null;
TextureWrap? wrapV = null;
TextureWrap? wrapW = null;
var builder = new GorgonSamplerStateBuilder(_graphics);
while ((reader.Read()) && (reader.TokenType != JsonToken.EndObject))
{
if (reader.TokenType != JsonToken.PropertyName)
{
continue;
}
switch (reader.Value.ToString())
{
case "borderColor":
borderColor = reader.ReadAsInt32();
break;
case "compareFunc":
compareFunction = (Comparison?)reader.ReadAsInt32();
break;
case "filter":
filter = (SampleFilter?)reader.ReadAsInt32();
break;
case "maxAnisotropy":
maxAnisotropy = reader.ReadAsInt32();
break;
case "maxLod":
maxLod = (float?)reader.ReadAsDouble();
break;
case "minLod":
minLod = (float?)reader.ReadAsDouble();
break;
case "mipLodBias":
mipLodBias = (float?)reader.ReadAsDouble();
break;
case "wrapU":
wrapU = (TextureWrap?)reader.ReadAsInt32();
break;
case "wrapV":
wrapV = (TextureWrap?)reader.ReadAsInt32();
break;
case "wrapW":
wrapW = (TextureWrap?)reader.ReadAsInt32();
break;
}
}
return(builder.Wrapping(wrapU, wrapV, wrapW, borderColor)
.MaxAnisotropy(maxAnisotropy ?? 1)
.ComparisonFunction(compareFunction ?? Comparison.Never)
.Filter(filter ?? SampleFilter.MinMagMipLinear)
.MipLevelOfDetail(minLod ?? float.MinValue, maxLod ?? float.MaxValue, mipLodBias ?? 0)
.Build());
}
