// I just reuse this one for the shadow mapping right?

struct Input
{
    float3 Position : TEXCOORD0;
    float3 Normal : TEXCOORD1;
    float4 Color : TEXCOORD2;
    float2 UV : TEXCOORD3;
    uint Bones : TEXCOORD4;
    uint weights : TEXCOORD5;

    uint Instance : SV_InstanceID;
};

struct Output
{
    float2 TexCoord : TEXCOORD0;
    float3 WorldPos : TEXCOORD1;
    float3 Normal: TEXCOORD2;
    float4 DirectionalShadowFragPos: TEXCOORD3;

    float4 Position : SV_Position;
};

struct Scene
{
    float4x4 Model;
};

StructuredBuffer<Scene> scene: register(t0, space0);

cbuffer Uniforms : register(b0, space1)
{
    float4x4 ViewProjection;
    float4x4 ShadowMapProjection;
    float time;
};

Output main(Input input)
{
    Output output;
    output.TexCoord = input.UV;

    float4 pos = float4(input.Position, 1.0);

    // pos.x += 0.2 * sin(time * 0.5 ) * pos.y * 0.5;
    // pos.y += 0.2 * cos(time * 0.5 ) * pos.z * 0.5;
    
    float4 WorldPos = mul(scene[input.Instance].Model, pos);
    output.Position = mul(ViewProjection, mul(scene[input.Instance].Model, pos));
    output.WorldPos = WorldPos.xyz;
    output.Normal = input.Normal;
    output.DirectionalShadowFragPos = mul(ShadowMapProjection, WorldPos);

    return output;
}