public ImageData LoadImage(string fileName, Func <string, Stream> getStream)
{
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentException("Must provide an image name.", nameof(fileName));
}
if (getStream is null)
{
throw new ArgumentNullException(nameof(getStream));
}
var type = (from t in MediaType.GuessByFileName(fileName)
where t is MediaType.Image
select t)
.FirstOrDefault();
if (!decoders.ContainsKey(type))
{
throw new NotSupportedException($"Don't know how to decode image type {type}");
}
using var stream = getStream(fileName);
return(decoders[type].Deserialize(stream));
}
private void LoadMesh(GraphicsDevice device, int index)
{
var factory = device.ResourceFactory;
var mesh = meshes[index];
var vertexBuffer
= vertexBuffers[index]
= factory.CreateBuffer(new BufferDescription((uint)(mesh.Vertices.Length * typeof(VertexPositionNormalTexture).Size()), BufferUsage.VertexBuffer));
device.UpdateBuffer(vertexBuffer, 0, mesh.Vertices);
var indexBuffer
= indexBuffers[index]
= factory.CreateBuffer(new BufferDescription((uint)(mesh.Indices.Length * typeof(ushort).Size()), BufferUsage.IndexBuffer));
device.UpdateBuffer(indexBuffer, 0, mesh.Indices);
var mapNames = meshMapNames[index];
var texturesToLoad = mapNames
.Values
.Distinct()
.Where(path => !textureViews.ContainsKey(path))
.ToArray();
for (var j = 0; j < texturesToLoad.Length; j++)
{
var path = texturesToLoad[j];
if (!textures.ContainsKey(path))
{
var decoder = MediaType.GuessByFileName(path)
.Where(ImageDecoderSet.Default.ContainsKey)
.Select(type => ImageDecoderSet.Default[type])
.FirstOrDefault();
using var stream = dataSource.GetStream(path);
var image = decoder.Deserialize(stream);
var imageData = image.GetData();
var imageWidth = (uint)image.Info.Dimensions.Width;
var imageHeight = (uint)image.Info.Dimensions.Height;
var texture = factory.CreateTexture(new TextureDescription(
imageWidth, imageHeight, 1,
1, 1,
PixelFormat.R8_G8_B8_A8_UNorm,
TextureUsage.Sampled,
TextureType.Texture2D));
textures[path] = texture;
textureViews[path] = factory.CreateTextureView(texture);
device.UpdateTexture(
texture,
imageData,
0, 0, 0,
imageWidth, imageHeight, 1,
0, 0);
}
}
var elements = mapNames.Keys.Select(name => new ResourceLayoutElementDescription()
{
Name = name,
Kind = ResourceKind.TextureReadOnly,
Stages = ShaderStages.Fragment
}).ToArray();
var layout = factory.CreateResourceLayout(new ResourceLayoutDescription(elements));
var resources = new BindableResource[elements.Length];
for (var i = 0; i < elements.Length; ++i)
{
resources[i] = textureViews[mapNames[elements[i].Name]];
}
resourceSets[index] = factory.CreateResourceSet(new ResourceSetDescription(layout, resources));
}
