type_common.h

//  Copyright (c) 2022 Feng Yang
//
//  I am making my contributions/submissions to this project solely in my
//  personal capacity and am not conveying any rights to any intellectual
//  property of any third parties.

#pragma once

#import <simd/simd.h>

typedef enum {
    Position = 0,
    Normal = 1,
    UV_0 = 2,
    Tangent = 3,
    Bitangent = 4,
    Color_0 = 5,
    Weights_0 = 6,
    Joints_0 = 7,
    UV_1 = 8,
    UV_2 = 9,
    UV_3 = 10,
    UV_4 = 11,
    UV_5 = 12,
    UV_6 = 13,
    UV_7 = 14,
} Attributes;

struct CameraData {
    matrix_float4x4 u_viewMat;
    matrix_float4x4 u_projMat;
    matrix_float4x4 u_VPMat;
    matrix_float4x4 u_viewInvMat;
    matrix_float4x4 u_projInvMat;
    vector_float3 u_cameraPos;
};

struct RendererData {
    matrix_float4x4 u_localMat;
    matrix_float4x4 u_modelMat;
    matrix_float4x4 u_normalMat;
};

// MARK: - Light
struct EnvMapLight {
    vector_float3 diffuse;
    int mipMapLevel;
    float diffuseIntensity;
    float specularIntensity;
};

struct PointLightData {
    vector_float3 color;
    vector_float3 position;
    float distance;
};

struct SpotLightData {
    vector_float3 color;
    float distance;
    vector_float3 position;
    float angleCos;
    vector_float3 direction;
    float penumbraCos;
};

struct DirectLightData {
    vector_float3 color;
    vector_float3 direction;
};

// MARK: - Material
struct PBRBaseData {
    vector_float4 baseColor;

    vector_float3 emissiveColor;
    float normalTextureIntensity;

    float occlusionTextureIntensity;
    int occlusionTextureCoord;
    float clearCoat;
    float clearCoatRoughness;

    vector_float4 tilingOffset;
};

struct PBRData {
    float metallic;
    float roughness;
    // aligned pad
    float pad1;
    float pad2;
};

struct PBRSpecularData {
    vector_float3 specularColor;
    float glossiness;
};