using UnityEngine;

namespace FidelityFX.FrameGen
{
    public static class OpticalFlowShaderIDs
    {
        // Shader resource views, i.e. read-only bindings
        public static readonly int SrvInputColor = Shader.PropertyToID("r_input_color");
        public static readonly int SrvOpticalFlowInput = Shader.PropertyToID("r_optical_flow_input");
        public static readonly int SrvOpticalFlowPreviousInput = Shader.PropertyToID("r_optical_flow_previous_input");
        public static readonly int SrvOpticalFlow = Shader.PropertyToID("r_optical_flow");
        public static readonly int SrvOpticalFlowPrevious = Shader.PropertyToID("r_optical_flow_previous");
        
        // Unordered access views, i.e. random read/write bindings
        public static readonly int UavOpticalFlowInput = Shader.PropertyToID("rw_optical_flow_input");
        public static readonly int UavOpticalFlowInputLevel1 = Shader.PropertyToID("rw_optical_flow_input_level_1");
        public static readonly int UavOpticalFlowInputLevel2 = Shader.PropertyToID("rw_optical_flow_input_level_2");
        public static readonly int UavOpticalFlowInputLevel3 = Shader.PropertyToID("rw_optical_flow_input_level_3");
        public static readonly int UavOpticalFlowInputLevel4 = Shader.PropertyToID("rw_optical_flow_input_level_4");
        public static readonly int UavOpticalFlowInputLevel5 = Shader.PropertyToID("rw_optical_flow_input_level_5");
        public static readonly int UavOpticalFlowInputLevel6 = Shader.PropertyToID("rw_optical_flow_input_level_6");
        public static readonly int UavOpticalFlow = Shader.PropertyToID("rw_optical_flow");
        public static readonly int UavOpticalFlowNextLevel = Shader.PropertyToID("rw_optical_flow_next_level");
        public static readonly int UavOpticalFlowScdHistogram = Shader.PropertyToID("rw_optical_flow_scd_histogram");   // scene change detection histogram
        public static readonly int UavOpticalFlowScdPreviousHistogram = Shader.PropertyToID("rw_optical_flow_scd_previous_histogram");
        public static readonly int UavOpticalFlowScdTemp = Shader.PropertyToID("rw_optical_flow_scd_temp");
        public static readonly int UavOpticalFlowScdOutput = Shader.PropertyToID("rw_optical_flow_scd_output");
        
        // Constant buffer bindings
        public static readonly int CbOpticalFlow = Shader.PropertyToID("cbOF");
        public static readonly int CbSpd = Shader.PropertyToID("cbOF_SPD");
    }
}