private static CachedShaderSet CreateAndCacheShaders(this ResourceFactory resourceFactory, SimpleShaderDescription simpleShaderDescription)
{
var vertexLayouts = new VertexLayoutDescription(
new VertexElementDescription(nameof(Vertex.Position), VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float3),
new VertexElementDescription(nameof(Vertex.UV), VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2),
new VertexElementDescription(nameof(Vertex.VertexGroup), VertexElementSemantic.TextureCoordinate, VertexElementFormat.UInt1));
var vertexCode = VertexCode;
var fragmentCode = FragmentCode;
var shaders = resourceFactory.CreateFromSpirv(
new ShaderDescription(ShaderStages.Vertex, Encoding.UTF8.GetBytes(vertexCode), "main"),
new ShaderDescription(ShaderStages.Fragment, Encoding.UTF8.GetBytes(fragmentCode), "main"));
var shaderSetDescription = new ShaderSetDescription(new[] { vertexLayouts }, shaders);
var resourceLayout = resourceFactory.CreateResourceLayout(new ResourceLayoutDescription(
new ResourceLayoutElementDescription("Projection", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("View", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("World", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("Transform", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("Nodes", ResourceKind.UniformBuffer, ShaderStages.Vertex),
new ResourceLayoutElementDescription("SurfaceTex", ResourceKind.TextureReadOnly, ShaderStages.Fragment),
new ResourceLayoutElementDescription("SurfaceSampler", ResourceKind.Sampler, ShaderStages.Fragment)));
var cachedShaderSet = new CachedShaderSet
{
ShaderSetDescription = shaderSetDescription,
ResourceLayout = resourceLayout,
};
_cachedShaderSets[resourceFactory].Add(simpleShaderDescription, cachedShaderSet);
return(cachedShaderSet);
}
public static CachedShaderSet GetShaderSet(this ResourceFactory resourceFactory, SimpleShaderDescription simpleShaderDescription)
{
if (!_cachedShaderSets.TryGetValue(resourceFactory, out var shaderDictionary))
{
shaderDictionary = new Dictionary <SimpleShaderDescription, CachedShaderSet>();
_cachedShaderSets.Add(resourceFactory, shaderDictionary);
}
return(shaderDictionary.TryGetValue(simpleShaderDescription, out var value) ? value : resourceFactory.CreateAndCacheShaders(simpleShaderDescription));
}