/// <summary>
/// Function to load a version 1.x Gorgon sprite.
/// </summary>
/// <param name="sprite">Sprite to fill in with data.</param>
/// <param name="reader">Binary reader to use to read in the data.</param>
public static void LoadSprite(GorgonSprite sprite, GorgonBinaryReader reader)
{
Version version;
string imageName = string.Empty;
sprite.IsV1Sprite = true;
reader.BaseStream.Position = 0;
string headerVersion = reader.ReadString();
if ((!headerVersion.StartsWith("GORSPR", StringComparison.OrdinalIgnoreCase)) || (headerVersion.Length < 7))
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GOR2D_SPRITE_CANNOT_READ_V1_SPRITE);
}
// Get the version information.
switch (headerVersion.ToUpperInvariant())
{
case "GORSPR1":
version = new Version(1, 0);
break;
case "GORSPR1.1":
version = new Version(1, 1);
break;
case "GORSPR1.2":
version = new Version(1, 2);
break;
default:
throw new GorgonException(GorgonResult.CannotRead, Resources.GOR2D_SPRITE_CANNOT_READ_V1_SPRITE);
}
// We don't need the sprite name.
reader.ReadString();
// Find out if we have an image.
if (reader.ReadBoolean())
{
bool isRenderTarget = reader.ReadBoolean();
imageName = reader.ReadString();
// We won't be supporting reading render targets from sprites in this version.
if (isRenderTarget)
{
// Skip the target data.
reader.ReadInt32();
reader.ReadInt32();
reader.ReadInt32();
reader.ReadBoolean();
reader.ReadBoolean();
}
}
// We don't use "inherited" values anymore. But we need them because
// the file doesn't include inherited data.
bool InheritAlphaMaskFunction = reader.ReadBoolean();
bool InheritAlphaMaskValue = reader.ReadBoolean();
bool InheritBlending = reader.ReadBoolean();
bool InheritHorizontalWrapping = reader.ReadBoolean();
bool InheritSmoothing = reader.ReadBoolean();
bool InheritStencilCompare = reader.ReadBoolean();
bool InheritStencilEnabled = reader.ReadBoolean();
bool InheritStencilFailOperation = reader.ReadBoolean();
bool InheritStencilMask = reader.ReadBoolean();
bool InheritStencilPassOperation = reader.ReadBoolean();
bool InheritStencilReference = reader.ReadBoolean();
bool InheritStencilZFailOperation = reader.ReadBoolean();
bool InheritVerticalWrapping = reader.ReadBoolean();
bool InheritDepthBias = true;
bool InheritDepthTestFunction = true;
bool InheritDepthWriteEnabled = true;
// Get version 1.1 fields.
if ((version.Major == 1) && (version.Minor >= 1))
{
InheritDepthBias = reader.ReadBoolean();
InheritDepthTestFunction = reader.ReadBoolean();
InheritDepthWriteEnabled = reader.ReadBoolean();
}
// Get the size of the sprite.
sprite.Size = new Vector2(reader.ReadSingle(), reader.ReadSingle());
// Older versions of the sprite object used pixel space for their texture coordinates. We will have to
// fix up these coordinates into texture space once we have a texture loaded. At this point, there's no guarantee
// that the texture was loaded safely, so we'll have to defer it until later.
// Also, older versions used the size the determine the area on the texture to cover. So use the size to
// get the texture bounds.
var textureOffset = new Vector2(reader.ReadSingle(), reader.ReadSingle());
sprite.TextureOffset = textureOffset;
sprite.TextureSize = sprite.Size;
// Read the anchor.
sprite.Anchor = new Vector2(reader.ReadSingle(), reader.ReadSingle());
// Get vertex offsets.
sprite.SetCornerOffset(RectangleCorner.UpperLeft, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
sprite.SetCornerOffset(RectangleCorner.UpperRight, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
sprite.SetCornerOffset(RectangleCorner.LowerRight, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
sprite.SetCornerOffset(RectangleCorner.LowerLeft, new Vector2(reader.ReadSingle(), reader.ReadSingle()));
// Get vertex colors.
sprite.SetCornerColor(RectangleCorner.UpperLeft, new GorgonColor(reader.ReadInt32()));
sprite.SetCornerColor(RectangleCorner.UpperRight, new GorgonColor(reader.ReadInt32()));
sprite.SetCornerColor(RectangleCorner.LowerLeft, new GorgonColor(reader.ReadInt32()));
sprite.SetCornerColor(RectangleCorner.LowerRight, new GorgonColor(reader.ReadInt32()));
// Skip shader information. Version 1.0 had shader information attached to the sprite.
if ((version.Major == 1) && (version.Minor < 1))
{
if (reader.ReadBoolean())
{
reader.ReadString();
reader.ReadBoolean();
if (reader.ReadBoolean())
{
reader.ReadString();
}
}
}
// We no longer have an alpha mask function.
if (!InheritAlphaMaskFunction)
{
reader.ReadInt32();
}
if (!InheritAlphaMaskValue)
{
// Direct 3D 9 used a value from 0..255 for alpha masking, we use
// a scalar value so convert to a scalar.
sprite.AlphaTestValues = new GorgonRangeF(0.0f, reader.ReadInt32() / 255.0f);
}
// Set the blending mode.
if (!InheritBlending)
{
sprite.Blending.SourceBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
sprite.Blending.DestinationBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
// Skip the blending mode, this gets detected automatically now.
reader.ReadInt32();
}
// Get alpha blending mode.
if ((version.Major == 1) && (version.Minor >= 2))
{
sprite.Blending.DestinationAlphaBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
sprite.Blending.SourceAlphaBlend = ConvertBlendOpToBlendType(reader.ReadInt32());
}
// Get horizontal wrapping mode.
if (!InheritHorizontalWrapping)
{
sprite.TextureSampler.HorizontalWrapping = ConvertImageAddressToTextureAddress(reader.ReadInt32());
}
// Get smoothing mode.
if (!InheritSmoothing)
{
sprite.TextureSampler.TextureFilter = ConvertSmoothingToFilter(reader.ReadInt32());
}
// Get stencil stuff.
if (!InheritStencilCompare)
{
sprite.DepthStencil.FrontFace.ComparisonOperator = ConvertCompare(reader.ReadInt32());
}
if (!InheritStencilEnabled)
{
// We don't enable stencil in the same way anymore, so skip this value.
reader.ReadBoolean();
}
if (!InheritStencilFailOperation)
{
sprite.DepthStencil.FrontFace.FailOperation = ConvertStencilOp(reader.ReadInt32());
}
if (!InheritStencilMask)
{
sprite.DepthStencil.StencilReadMask = (byte)(reader.ReadInt32() & 0xFF);
}
if (!InheritStencilPassOperation)
{
sprite.DepthStencil.FrontFace.PassOperation = ConvertStencilOp(reader.ReadInt32());
}
if (!InheritStencilReference)
{
sprite.DepthStencil.StencilReference = reader.ReadInt32();
}
if (!InheritStencilZFailOperation)
{
sprite.DepthStencil.FrontFace.DepthFailOperation = ConvertStencilOp(reader.ReadInt32());
}
// Get vertical wrapping mode.
if (!InheritVerticalWrapping)
{
sprite.TextureSampler.VerticalWrapping = ConvertImageAddressToTextureAddress(reader.ReadInt32());
}
// Get depth info.
if ((version.Major == 1) && (version.Minor >= 1))
{
if (!InheritDepthBias)
{
// Depth bias values are quite different on D3D9 than they are on D3D11, so skip this.
reader.ReadSingle();
}
if (!InheritDepthTestFunction)
{
sprite.DepthStencil.DepthComparison = ConvertCompare(reader.ReadInt32());
}
if (!InheritDepthWriteEnabled)
{
sprite.DepthStencil.IsDepthWriteEnabled = reader.ReadBoolean();
}
sprite.TextureSampler.BorderColor = new GorgonColor(reader.ReadInt32());
}
// Get flipped flags.
sprite.HorizontalFlip = reader.ReadBoolean();
sprite.VerticalFlip = reader.ReadBoolean();
// Bind the texture (if we have one bound to this sprite) if it's already loaded, otherwise defer it.
if (string.IsNullOrEmpty(imageName))
{
return;
}
sprite.DeferredTextureName = imageName;
}
