#include "text_shared.hlsli"

StructuredBuffer<FontInfo> fontBuffer: register(t0, space0);

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

struct VSOut 
{
    uint Color : TEXCOORD0;
    float2 UV : TEXCOORD1;
    float2 pixelPosition: TEXCOORD2;
    uint Instance: TEXCOORD3;

    float4 Position : SV_Position;
};

struct Input
{
    float2 Position : TEXCOORD0;
    float2 UV : TEXCOORD1;
    uint Color: TEXCOORD2;
    uint Instance : SV_InstanceID;
};

VSOut main(Input v)
{
    FontInfo s = fontBuffer[v.Instance];
    VSOut o;

    float2 t = v.Position + s.position;
    o.pixelPosition = t;

    float4 fp = float4((t / Extents) * 2 + float2(-1.0f, -1.0f), 0.0, 1.0);
    fp.y = -fp.y;
    o.Position = fp;

    o.UV = v.UV;
    o.Color = v.Color;
    o.Instance = v.Instance;

    return o;
}