#include "rect_shared.hlsli"

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

cbuffer Uniforms : register(b0, space1)
{
    float2 Extents;
};

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 VertexOut
{
    float4 Color : TEXCOORD0;
    float2 UV : TEXCOORD1;
    float2 pixelPosition: TEXCOORD2;
    uint Instance: TEXCOORD3;

    float4 Position : SV_Position;
};

VertexOut main(Input v)
{
    VertexOut o;

    Scene s = scene[v.Instance];

    float2 finalSize = (s.imageSize / Extents);
    //float zLevel = objectBuffer.objects[gl_BaseInstance].zLevel;

    float2 finalPos = ((s.imagePosition / Extents) * 2 - 1) - s.anchorPoint * finalSize * s.scale;

	o.Color = s.baseColor;

    float4 fp = float4(
        finalPos.x + ( v.Position.x * finalSize.x * s.scale.x), 
        finalPos.y + (-v.Position.y * finalSize.y * s.scale.y),
        v.Position.z, 1.0
        );

    o.Position = fp;
    o.UV = float2(1 - v.UV.x, v.UV.y);
    o.pixelPosition = (v.Position.xy - s.anchorPoint) / 2 * s.imageSize;
    o.pixelPosition.y = s.imageSize.y - o.pixelPosition.y;
    o.Instance = v.Instance;

    return o;
}