public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
    {
        if (colorTintMat == null)
        {
            UnityEngine.Debug.LogError("Material is null");
            return;
        }
        if (!renderingData.cameraData.postProcessEnabled)
        {
            return;
        }
        //判读后效模块是否开启
        var stack = VolumeManager.instance.stack;

        colorTint = stack.GetComponent <ColorTint>();
        if (colorTint == null)
        {
            return;
        }
        if (!colorTint.IsActive())
        {
            return;
        }

        var cmd = CommandBufferPool.Get(m_ProfilerTag);

        context.ExecuteCommandBuffer(cmd);
        CommandBufferPool.Release(cmd);
    }