/// <summary>
/// Initializes a new instance of the <see cref="SpriteBatch" /> class.
/// </summary>
/// <param name="graphicsDevice"> The graphics device. </param>
/// <param name="center"> (Optional) True to center the coordinate system in the viewport. </param>
/// <param name="sortAlgorithm"> (Optional) The sort algorithm. </param>
/// <exception cref="ArgumentException">
/// Thrown when one or more arguments have unsupported or
/// illegal values.
/// </exception>
/// <exception cref="NullReferenceException"> Thrown when a value was unexpectedly null. </exception>
public SpriteBatch(IGraphicsDevice graphicsDevice,
bool center = false,
SpriteSortAlgorithm sortAlgorithm = SpriteSortAlgorithm.MergeSort)
{
_device = graphicsDevice.Device;
_context = graphicsDevice.DeviceContext;
_center = center;
_spriteSort = sortAlgorithm switch
{
SpriteSortAlgorithm.MergeSort => new SpriteMergeSort(),
_ => throw new ArgumentException($"invalid sort algorithm ({sortAlgorithm})", nameof(sortAlgorithm))
};
_defaultBlendState = graphicsDevice.BlendStates.AlphaBlend;
_defaultSamplerState = graphicsDevice.SamplerStates.LinearWrap;
_defaultDepthStencilState = graphicsDevice.DepthStencilStates.None;
_defaultRasterizerState = graphicsDevice.RasterizerStates.CullBackDepthClipOff;
_defaultRasterizerScissorEnabledState = graphicsDevice.RasterizerStates.CullBackDepthClipOffScissorEnabled;
_whiteTexture = graphicsDevice.Textures.White;
_indexBuffer = IndexBuffer.Create(graphicsDevice, s_indices);
Assembly assembly = Assembly.GetExecutingAssembly();
using (Stream stream =
assembly.GetManifestResourceStream($"{assembly.GetName().Name}.{Shaders.POSITION_COLOR_TEXTURE}") ??
throw new NullReferenceException($"{assembly.GetName().Name}.{Shaders.POSITION_COLOR_TEXTURE}"))
{
Shader.Shader.Group group =
(_shader = ShaderFileLoader.FromStream(graphicsDevice, stream) ??
throw new NullReferenceException(nameof(ShaderFileLoader.FromStream)))["DEFAULT"];
/// <summary>
/// Initializes a new instance of the <see cref="Canvas" /> class.
/// </summary>
/// <param name="graphicsDevice"> The graphics device. </param>
/// <exception cref="NullReferenceException"> Thrown when a value was unexpectedly null. </exception>
public Canvas(IGraphicsDevice graphicsDevice)
{
_context = graphicsDevice.DeviceContext;
_defaultBlendState = graphicsDevice.BlendStates.AlphaBlend;
_defaultSamplerState = graphicsDevice.SamplerStates.LinearWrap;
_defaultDepthStencilState = graphicsDevice.DepthStencilStates.None;
_defaultRasterizerState = graphicsDevice.RasterizerStates.CullBackDepthClipOff;
_defaultRasterizerScissorEnabledState = graphicsDevice.RasterizerStates.CullBackDepthClipOffScissorEnabled;
_indexBuffer = IndexBuffer.Create(graphicsDevice, s_indices);
Assembly assembly = Assembly.GetExecutingAssembly();
using (Stream stream =
assembly.GetManifestResourceStream($"{assembly.GetName().Name}.{Shaders.CANVAS}") ??
throw new NullReferenceException($"{assembly.GetName().Name}.{Shaders.CANVAS}"))
{
Shader.Shader.Group group =
(_shader = ShaderFileLoader.FromStream(graphicsDevice, stream) ??
throw new NullReferenceException(nameof(ShaderFileLoader.FromStream)))["DEFAULT"];
