#pragma region CPL License
/*
Nuclex Native Framework
Copyright (C) 2002-2013 Nuclex Development Labs

This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.

You should have received a copy of the IBM Common Public
License along with this library
*/
#pragma endregion // CPL License

#ifndef NUCLEX_GRAPHICS_RASTERIZATION_LIMITS_H
#define NUCLEX_GRAPHICS_RASTERIZATION_LIMITS_H

#include <cstddef>

namespace Nuclex { namespace Graphics { namespace Rasterization {

  // ------------------------------------------------------------------------------------------- //

  /// <summary>Number of vertex buffers that can be used at the same time</summary>
  /// <remarks>
  ///   Depending on the API used, the actual number of vertex buffers that can be assigned
  ///   may be lower. Direct3D 11 guarantees 14 simultaneous buffers for its input assembler
  ///   stage, whereas Direct3D 9 lets the vender decide between supporting any number from
  ///   1 to 16 simultaneous buffers. This number is the maximum number of slots the library
  ///   will be able to handle.
  /// </remarks>
  const std::size_t VertexBufferSlotCount = 8;

  /// <summary>Number of constant buffers that can be assigned to a shader</summary>
  /// <remarks>
  ///   For older graphics APIs such as Direct3D 9, this number is purely a library limit
  ///   because constant buffers are emulated. For Direct3D 11 it reflects the number of
  ///   constant buffers that will actually be passed to the driver. Direct3D 11 guarantees
  ///   at least 14 constant buffer slots, but we use a lower limit here to reduce the
  ///   overhead of change detection (and nobody uses more then 2-3 constant buffers anyway).
  /// </remarks>
  const std::size_t ConstantBufferSlotCount = 8;

  /// <summary>Number of textures that can be assigned to a shader</summary>
  /// <remarks>
  ///   Depending on the API used, the actual number of textures that can be assigned may
  ///   be lower. Direct3D 11 guarantees 16 samplers but nearly unlimited registers for
  ///   holding resources. Since in Direct3D 9 samplers and textures shared slots,
  ///   the number of textures that are safe to use in general is lower. This number is
  ///   used for the maximum number of slots the library will be able to handle.
  /// </remarks>
  const std::size_t TextureSlotCount = 8;

  // ------------------------------------------------------------------------------------------- //

}}} // namespace Nuclex::Graphics::Rasterization

#endif // NUCLEX_GRAPHICS_RASTERIZATION_LIMITS_H