local function AddResolution(resolutions, w, h)
    
    local newResolution = { w = w, h = h }
    resolutions[#resolutions + 1] = newResolution

    local optionValue = string.format("%dx%d", w, h)
    local optionText = zo_strformat(SI_GRAPHICS_OPTIONS_VIDEO_RESOLUTION_FORMAT, w, h)
    return optionValue, optionText
end

local function InitializeResolution(control, ...)
    local resolutions = {}
    local valid = {}
    local itemText = {}

    -- process two elements at a time since the input looks like this: {w1, h1, w2, h2, w3, h3, ...}
    for i = 1, select("#", ...), 2 do
        local optionValue, optionText = AddResolution(resolutions, select(i, ...))
        if(optionValue and optionText) then
            valid[#valid + 1] = optionValue
            itemText[#itemText + 1] = optionText
        end
    end

    control.data.valid = valid
    control.data.itemText = itemText

    ZO_OptionsWindow_InitializeControl(control)

    ZO_Options_SetOptionActiveOrInactive(control, GetSetting(SETTING_TYPE_GRAPHICS, GRAPHICS_SETTING_FULLSCREEN) == FULLSCREEN_MODE_FULLSCREEN_EXCLUSIVE)
end

function ZO_OptionsPanel_Video_InitializeResolution(control)
    InitializeResolution(control, GetDisplayModes())
end

function ZO_OptionsPanel_Video_SetCustomScale(self, formattedValueString)
    SetSetting(SETTING_TYPE_UI, UI_SETTING_CUSTOM_SCALE, formattedValueString)
    ApplySettings()
end

function ZO_OptionsPanel_Video_CustomScale_RefreshEnabled(control)
    if ZO_GameMenu_PreGame or GetSetting(SETTING_TYPE_UI, UI_SETTING_USE_CUSTOM_SCALE) == "0" then
        ZO_Options_SetOptionInactive(control)
    else
        ZO_Options_SetOptionActive(control)
    end
end

function ZO_OptionsPanel_Video_CustomScale_OnShow(control)
    if ZO_GameMenu_PreGame then
        ZO_OptionsPanel_Video_CustomScale_RefreshEnabled(control)
        GetControl(control, "WarningIcon"):SetHidden(false)
    end
end

function ZO_OptionsPanel_Video_UseCustomScale_OnShow(control)
    if ZO_GameMenu_PreGame then
        ZO_Options_SetOptionInactive(control)
        GetControl(control, "WarningIcon"):SetHidden(false)
    end
end

local ZO_OptionsPanel_Video_ControlData =
{
    --Graphics
    [SETTING_TYPE_GRAPHICS] =
    {
        --Options_Video_DisplayMode
        [GRAPHICS_SETTING_FULLSCREEN] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_FULLSCREEN,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_DISPLAY_MODE,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_DISPLAY_MODE_TOOLTIP,
            valid = {FULLSCREEN_MODE_FULLSCREEN_EXCLUSIVE, FULLSCREEN_MODE_WINDOWED, FULLSCREEN_MODE_FULLSCREEN_WINDOWED, },
            valueStringPrefix = "SI_FULLSCREENMODE",
            
            events = {[FULLSCREEN_MODE_WINDOWED] = "DisplayModeNonExclusive", [FULLSCREEN_MODE_FULLSCREEN_WINDOWED] = "DisplayModeNonExclusive", [FULLSCREEN_MODE_FULLSCREEN_EXCLUSIVE] = "DisplayModeExclusive",},
        },
        --Options_Video_Resolution
        [GRAPHICS_SETTING_RESOLUTION] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_RESOLUTION,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_RESOLUTION,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_RESOLUTION_TOOLTIP,

            eventCallbacks =
            {
                ["DisplayModeNonExclusive"] = ZO_Options_SetOptionInactive,
                ["DisplayModeExclusive"] = ZO_Options_SetOptionActive,
            },

            gamepadIsEnabledCallback = function()
                                return tonumber(GetSetting(SETTING_TYPE_GRAPHICS,GRAPHICS_SETTING_FULLSCREEN)) == FULLSCREEN_MODE_FULLSCREEN_EXCLUSIVE
                            end
        },
        --Options_Video_VSync
        [GRAPHICS_SETTING_VSYNC] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_VSYNC,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_VSYNC,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_VSYNC_TOOLTIP,
        },
        --Options_Video_Anti_Aliasing
        [GRAPHICS_SETTING_ANTI_ALIASING] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_ANTI_ALIASING,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_ANTI_ALIASING,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_ANTI_ALIASING_TOOLTIP,
        },
        --Options_Video_Gamma_Adjustment
        [GRAPHICS_SETTING_GAMMA_ADJUSTMENT] =
        {
            controlType = OPTIONS_SLIDER,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_GAMMA_ADJUSTMENT,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_GAMMA_ADJUSTMENT,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_GAMMA_ADJUSTMENT_TOOLTIP,
            minValue = 75,
            maxValue = 150,
            valueFormat = "%.2f",
        },
        --Options_Video_Graphics_Quality
        [GRAPHICS_SETTING_PRESETS] =
        {
                controlType = OPTIONS_FINITE_LIST,
                system = SETTING_TYPE_GRAPHICS,
                settingId = GRAPHICS_SETTING_PRESETS,
                panel = SETTING_PANEL_VIDEO,
                text = SI_GRAPHICS_OPTIONS_VIDEO_PRESETS,
                tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_PRESETS_TOOLTIP,

                valid = IsMinSpecMachine() 
                        and {GRAPHICS_PRESETS_MINIMUM, GRAPHICS_PRESETS_LOW, GRAPHICS_PRESETS_MEDIUM, GRAPHICS_PRESETS_CUSTOM}
                        or {GRAPHICS_PRESETS_MINIMUM, GRAPHICS_PRESETS_LOW, GRAPHICS_PRESETS_MEDIUM, GRAPHICS_PRESETS_HIGH, GRAPHICS_PRESETS_ULTRA, GRAPHICS_PRESETS_CUSTOM},

                valueStringPrefix = "SI_GRAPHICSPRESETS",
                mustReloadSettings = true,
                mustPushApply = true,
        },
        --Options_Video_Texture_Resolution
        [GRAPHICS_SETTING_MIP_LOAD_SKIP_LEVELS] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_MIP_LOAD_SKIP_LEVELS,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_TEXTURE_RES,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_TEXTURE_RES_TOOLTIP,

            valid = IsMinSpecMachine() 
                    and {TEX_RES_CHOICE_LOW, TEX_RES_CHOICE_MEDIUM}
                    or {TEX_RES_CHOICE_LOW, TEX_RES_CHOICE_MEDIUM, TEX_RES_CHOICE_HIGH},

            valueStringPrefix = "SI_TEXTURERESOLUTIONCHOICE",
            mustPushApply = true,
        },
        --Options_Video_Sub_Sampling
        [GRAPHICS_SETTING_SUB_SAMPLING] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_SUB_SAMPLING,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_SUB_SAMPLING,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_SUB_SAMPLING_TOOLTIP,
            valid = {SUB_SAMPLING_MODE_LOW, SUB_SAMPLING_MODE_MEDIUM, SUB_SAMPLING_MODE_NORMAL},
            valueStringPrefix = "SI_SUBSAMPLINGMODE",
        },
        --Options_Video_Shadows
        [GRAPHICS_SETTING_SHADOWS] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_SHADOWS,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_SHADOWS,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_SHADOWS_TOOLTIP,
            valid = {SHADOWS_CHOICE_OFF, SHADOWS_CHOICE_LOW, SHADOWS_CHOICE_MEDIUM, SHADOWS_CHOICE_HIGH, SHADOWS_CHOICE_ULTRA},
            valueStringPrefix = "SI_SHADOWSCHOICE",
            mustPushApply = true,
        },
        --Options_Video_Reflection_Quality
        [GRAPHICS_SETTING_REFLECTION_QUALITY] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_REFLECTION_QUALITY,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_REFLECTION_QUALITY,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_REFLECTION_QUALITY_TOOLTIP,
            valid = {REFLECTION_QUALITY_OFF, REFLECTION_QUALITY_LOW, REFLECTION_QUALITY_MEDIUM, REFLECTION_QUALITY_HIGH},
            valueStringPrefix = "SI_REFLECTIONQUALITY",
            mustPushApply = true,
        },
        --Options_Video_Maximum_Particle_Systems
        [GRAPHICS_SETTING_PFX_GLOBAL_MAXIMUM] =
        {
            controlType = OPTIONS_SLIDER,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_PFX_GLOBAL_MAXIMUM,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_MAXIMUM_PARTICLE_SYSTEMS,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_MAXIMUM_PARTICLE_SYSTEMS_TOOLTIP,
            minValue = 768,
            maxValue = 2048,
            valueFormat = "%d",
            showValue = true,
            showValueMin = 768,
            showValueMax = 2048,
        },
        --Options_Video_Particle_Suppression_Distance
        [GRAPHICS_SETTING_PFX_SUPPRESS_DISTANCE] =
        {
            controlType = OPTIONS_SLIDER,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_PFX_SUPPRESS_DISTANCE,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_PARTICLE_SUPPRESSION_DISTANCE,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_PARTICLE_SUPPRESSION_DISTANCE_TOOLTIP,
            minValue = 35.0,
            maxValue = 100.0,
            valueFormat = "%d",
            showValue = true,
            showValueMin = 35,
            showValueMax = 100,
        },
        --Options_Video_View_Distance
        [GRAPHICS_SETTING_VIEW_DISTANCE] =
        {
            controlType = OPTIONS_SLIDER,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_VIEW_DISTANCE,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_VIEW_DISTANCE,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_VIEW_DISTANCE_TOOLTIP,
            minValue = 0.4,
            maxValue = 2.0,
            valueFormat = "%.2f",
            showValue = true,
            showValueMin = 0,
            showValueMax = 100,
        },
        --Options_Video_Ambient_Occlusion
        [GRAPHICS_SETTING_AMBIENT_OCCLUSION] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_AMBIENT_OCCLUSION,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_AMBIENT_OCCLUSION,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_AMBIENT_OCCLUSION_TOOLTIP,
        },
        --Options_Video_Bloom
        [GRAPHICS_SETTING_BLOOM] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_BLOOM,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_BLOOM,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_BLOOM_TOOLTIP,
        },
        --Options_Video_Depth_Of_Field
        [GRAPHICS_SETTING_DEPTH_OF_FIELD] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_DEPTH_OF_FIELD,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_DEPTH_OF_FIELD,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_DEPTH_OF_FIELD_TOOLTIP,
        },
        --Options_Video_Distortion
        [GRAPHICS_SETTING_DISTORTION] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_DISTORTION,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_DISTORTION,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_DISTORTION_TOOLTIP,
        },
        --Options_Video_God_Rays
        [GRAPHICS_SETTING_GOD_RAYS] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_GOD_RAYS,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_GOD_RAYS,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_GOD_RAYS_TOOLTIP,
        },
        --Options_Video_Clutter_2D
        [GRAPHICS_SETTING_CLUTTER_2D] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_CLUTTER_2D,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_CLUTTER_2D,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_CLUTTER_2D_TOOLTIP,
        },
        [GRAPHICS_SETTING_CONSOLE_ENHANCED_RENDER_QUALITY] =
        {
            controlType = OPTIONS_FINITE_LIST,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_CONSOLE_ENHANCED_RENDER_QUALITY,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_CONSOLE_ENHANCED_RENDER_QUALITY,
            tooltipText = SI_GRAPHICS_OPTIONS_CONSOLE_ENHANCED_RENDER_QUALITY_TOOLTIP,
            --valid = dynamically determined based on the system below,
            valueStringPrefix = "SI_CONSOLEENHANCEDRENDERQUALITY",
        },
        [GRAPHICS_SETTING_HDR_BRIGHTNESS] =
        {
            controlType = OPTIONS_SLIDER,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_HDR_BRIGHTNESS,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_HDR_BRIGHTNESS,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_HDR_BRIGHTNESS_TOOLTIP,
            minValue = 0,
            maxValue = 1,
            valueFormat = "%.2f",
            showValue = true,
            showValueMin = 0,
            showValueMax = 100,
        },
        [GRAPHICS_SETTING_SHOW_ADDITIONAL_ALLY_EFFECTS] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_GRAPHICS,
            settingId = GRAPHICS_SETTING_SHOW_ADDITIONAL_ALLY_EFFECTS,
            panel = SETTING_PANEL_VIDEO,
            text = SI_GRAPHICS_OPTIONS_VIDEO_SHOW_ADDITIONAL_ALLY_EFFECTS,
            tooltipText = SI_GRAPHICS_OPTIONS_VIDEO_SHOW_ADDITIONAL_ALLY_EFFECTS_TOOLTIP,
        },
    },

    --UI Settings
    [SETTING_TYPE_UI] =
    {
        --Options_Video_UseCustomScale
        [UI_SETTING_USE_CUSTOM_SCALE] =
        {
            controlType = OPTIONS_CHECKBOX,
            system = SETTING_TYPE_UI,
            settingId = UI_SETTING_USE_CUSTOM_SCALE,
            panel = SETTING_PANEL_VIDEO,
            text = SI_VIDEO_OPTIONS_UI_USE_CUSTOM_SCALE,
            tooltipText = SI_VIDEO_OPTIONS_UI_USE_CUSTOM_SCALE_TOOLTIP,
            events = {
                [true] = "UseCustomScaleToggled",
                [false] = "UseCustomScaleToggled",
            },
            eventCallbacks =
            {
                ["UseCustomScaleToggled"] = function()
                    ApplySettings()
                end
            }
        },
        --Options_Video_CustomScale
        [UI_SETTING_CUSTOM_SCALE] =
        {
            controlType = OPTIONS_SLIDER,
            system = SETTING_TYPE_UI,
            settingId = UI_SETTING_CUSTOM_SCALE,
            panel = SETTING_PANEL_VIDEO,
            text = SI_VIDEO_OPTIONS_UI_CUSTOM_SCALE,
            tooltipText = SI_VIDEO_OPTIONS_UI_CUSTOM_SCALE_TOOLTIP,
            valueFormat = "%.6f",
            minValue = 0.64,
            maxValue = 1.1,
            onReleasedHandler = ZO_OptionsPanel_Video_SetCustomScale,
            eventCallbacks =
            {
                ["UseCustomScaleToggled"] = ZO_OptionsPanel_Video_CustomScale_RefreshEnabled,
            }
        },
    },

    [SETTING_TYPE_CUSTOM] =
    {
        [OPTIONS_CUSTOM_SETTING_SCREEN_ADJUST] =
        {
            controlType = OPTIONS_INVOKE_CALLBACK,
            system = SETTING_TYPE_CUSTOM,
            panel = SETTING_PANEL_VIDEO,
            settingId = OPTIONS_CUSTOM_SETTING_SCREEN_ADJUST,
            text = SI_SETTING_SHOW_SCREEN_ADJUST,
            gamepadIsEnabledCallback = function() 
                                            -- only allow resizing once the previous one has been completed.
                                            return not IsGUIResizing()
                                        end,
            disabledText = SI_SETTING_SHOW_SCREEN_ADJUST_DISABLED,
            callback = function()
                            SCENE_MANAGER:Push("screenAdjust")
                        end,
        },

        [OPTIONS_CUSTOM_SETTING_GAMMA_ADJUST] =
        {
            controlType = OPTIONS_INVOKE_CALLBACK,
            system = SETTING_TYPE_CUSTOM,
            panel = SETTING_PANEL_VIDEO,
            settingId = OPTIONS_CUSTOM_SETTING_GAMMA_ADJUST,
            text = SI_SETTING_SHOW_GAMMA_ADJUST,
            gamepadTextOverride = SI_GAMMA_MAIN_TEXT,
            callback = function()
                            SCENE_MANAGER:Push("gammaAdjust")
                        end,
            customResetToDefaultsFunction = function()
                                                ResetSettingToDefault(SETTING_TYPE_GRAPHICS, GRAPHICS_SETTING_GAMMA_ADJUSTMENT)
                                            end
        },
    },
}

function ZO_OptionsPanel_Video_HasConsoleRenderQualitySetting()
    local numValidOptions = 0
    for settingValue = CONSOLE_ENHANCED_RENDER_QUALITY_ITERATION_BEGIN, CONSOLE_ENHANCED_RENDER_QUALITY_ITERATION_END do
        if DoesSystemSupportConsoleEnhancedRenderQuality(settingValue) then
            numValidOptions = numValidOptions + 1
        end
    end

    if numValidOptions > 1 then
        return true
    end

    return false
end

--Dynamically determine which console render quality settings are allowed on this system
local renderQualitySetting = ZO_OptionsPanel_Video_ControlData[SETTING_TYPE_GRAPHICS][GRAPHICS_SETTING_CONSOLE_ENHANCED_RENDER_QUALITY]
renderQualitySetting.valid = {}
for settingValue = CONSOLE_ENHANCED_RENDER_QUALITY_ITERATION_BEGIN, CONSOLE_ENHANCED_RENDER_QUALITY_ITERATION_END do
    if DoesSystemSupportConsoleEnhancedRenderQuality(settingValue) then
        table.insert(renderQualitySetting.valid, settingValue)
    end
end

ZO_SharedOptions.AddTableToPanel(SETTING_PANEL_VIDEO, ZO_OptionsPanel_Video_ControlData)