#define NEAR_PLANE (0.01f)


[[vk::binding(0, 1)]]
cbuffer camera {
    row_major float4x4 view_projection_matrix;
};

[[vk::binding(1, 1)]]
cbuffer constants {
    int2  drag_start;
    int2  mouse;
    int   map_width;
};

extension<T: ITexelElement, int format> Sampler2D<T, 0, format> {
    T PixelArtSample(float2 location) {
        float2 texture_size;
        this.GetDimensions(texture_size.x, texture_size.y);

        float2 uv = location * texture_size;
        uv = floor(uv) + min(fract(uv) / fwidth(uv), 1.0) - 0.5;
        uv /= texture_size;

        return this.Sample(uv);
    }
}

extension<T: ITexelElement, int format> Sampler2DArray<T, 0, format> {
    T PixelArtSample(float3 location) {
        float3 texture_size;
        this.GetDimensions(texture_size.x, texture_size.y, texture_size.z);

        float2 uv = location.xy * texture_size.xy;
        uv = floor(uv) + min(fract(uv) / fwidth(uv), 1.0) - 0.5;
        uv /= texture_size.xy;

        return this.Sample(float3(uv, location.z));
    }
}