MaterialTypes.h

#pragma once
 
#include <string>
 
#include "Base.h"
 
namespace Cogs
{
  namespace Core
  {
    // Layout of this enum should be changed with care.
    // Dependent on this layout:
    //         size_t DataTypeSizes[],
    //         const char * DataTypeNames[],
    //     Language APIs (JS++) to check validity when set/get Property.
    //     Inspectors for Material / MaterialProperty
 
    enum class MaterialDataType
    {
      Unknown = 0,
      Float,
      Float2,
      Float3,
      Float4,
      Float4x4,
      Float4Array,
      Float4x4Array,
      Int,
      Int2,
      Int3,
      Int4,
      UInt,
      UInt2,
      UInt3,
      UInt4,
      Bool,
      Texture,
      VFACE,
      ClipDistance,
      SV_IsFrontFace,
      SV_InstanceID,
      Position
    };
 
    static const size_t DataTypeSizes[] = {
      0,  // Unknown
      4,  // Float
      8,  // Float2
      12, // Float3
      16, // Float4
      64, // Float4x4
      16, // Float4Array
      64, // float4x4Array
      4,  // Int
      8,  // Int2
      12, // Int3
      16, // Int4
      4,  // UInt
      8,  // Uint2
      12, // Uint3
      16, // Uint4
      1,  // Bool
      0,  // Texture
      0,  // VFACE
      0,  // ClipDistance
      0,  // SV_IsFrontFace
      0,  // SV_InstanceID
      0  // Position
    };
    static_assert(std::size(DataTypeSizes) == (size_t(MaterialDataType::Position) + 1));
 
    static const char * DataTypeNames[] = {
      "Unknown",
      "float",
      "float2",
      "float3",
      "float4",
      "float4x4",
      "float4",
      "float4x4",
      "int",
      "int2",
      "int3",
      "int4",
      "uint",
      "uint2",
      "uint3",
      "uint4",
      "bool",
      "texture",
      "VFACE",
      "SV_ClipDistance",
      "SV_IsFrontFace",
      "SV_InstanceID",
      "Position"
    };
    static_assert(std::size(DataTypeNames) == (size_t(MaterialDataType::Position) + 1));
 
    struct ValueDefinition
    {
      std::string name;
      MaterialDataType type = MaterialDataType::Unknown;
      size_t dimension = 0;
      std::string dimensionString;
    };
  }
}