struct Camera
{
    float4x4 view;
    float4x4 proj;
};
[[vk::binding(0, 0)]]
StructuredBuffer<Camera> camera : register(t0);

struct ModelData
{
    float4x4 model;
};
[[vk::binding(0, 1)]]
StructuredBuffer<ModelData> model : register(t1);

struct Vertex 
{
    float3 position;
    float uv_x;
    float3 normal;
    float uv_y;
    float4 tangent;
    float4 bitangent;
};

[[vk::binding(0, 2)]] 
StructuredBuffer<Vertex> vertexBuffer : register(t2);

struct ModelPushConstant
{
    int modelIndex;  // Push constant data
};

[[vk::push_constant]]
ModelPushConstant pushConstants;

// Outputs
struct VSOutput {
    float4 Position : SV_Position;
    float3 Color : TEXCOORD0;
    float2 UV : TEXCOORD1;
};

// Main vertex shader
VSOutput main(uint vertexIndex : SV_VertexID) 
{
    VSOutput output;

    Camera camData = camera[0];

    ModelData modelData = model[pushConstants.modelIndex];

    // Load vertex data from the buffer
    Vertex v = vertexBuffer[vertexIndex];
    
    // Output the position of each vertex
    output.Position = mul(camData.proj, mul(camData.view, mul(modelData.model, float4(v.position, 1.0f))));
    output.Color = normalize(float3(v.position.xyz));

    return output;
}