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D3D9 screenshot via lua (+Graphical issue)?

 
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Rectangle
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Joined: 23 Feb 2013
Posts: 73
PostPosted: Thu May 16, 2013 8:35 am    Post subject: D3D9 screenshot via lua (+Graphical issue)? Reply with quote
Just wondering if there was a way to capture a frame using CE's built-in D3D hook functionality?
I have a strange graphical issue which I would like to bring to the forum's attention, and the screenshot must be made at a certain point during the execution of my current script...
So it would make more sense if I could just do this directly in LUA.
I checked main.lua but couldn't find any capture methods to aid me in this area, so I assume this is either an unsupported feature, or requires some external help?

If this isn't easily possible, then perhaps I could attempt to capture it in a regular screenshot and report it back here.
But I'd still be interested in such a feature...

UPDATE:
Well actually, I was able to capture it on my first try using MS Snipping Tool:

Notice the jagged outline around the text? Is this normal?

Here's the code I'm using:
Code:
-- MAIN VARIABLES
local minCPU = tonumber("95")                                         -- We won't display a warning unless
local minGPU = tonumber("95")                                          -- temperatures exceed these values!
local processName = 'D1ablo III.exe'                                  -- The target process (game.exe)
local windowTitle = "Lubbo's Fan Control  -  ver. 1.2.3"              -- The monitor app's caption
local windowClass = "WindowsForms10.Window.8.app.0.2bf8098_r14_ad1"   -- The monitor app's window class

-- WINAPI SETUP
require[[alien]]
local format = string.format
local user32 = alien.load("user32.dll")
local FindWindow = user32.FindWindowExA
local GetWindowText = user32.GetWindowTextA
local EnumChildWindows = user32.EnumChildWindows
FindWindow:types{ ret = 'long', abi = 'stdcall', 'long', 'long', 'string', 'string' }
GetWindowText:types{ ret = 'long', abi = 'stdcall', 'long', 'pointer', 'int' }
EnumChildWindows:types{ ret = 'int', abi = 'stdcall', 'long', 'callback', 'int' }

-- MONITORING VARIABLES
local parentWindow = 0
local windowProc = nil
local textCPU = "Unknown"
local textGPU = "Unknown"
local tempCPU = tonumber("100")
local tempGPU = tonumber("100")


-- CALLBACK WINDOW PROCEDURE
function EnumChildProc(handle, data)
    -- Don't overprocess, if we already have what we want
    if(textCPU ~= "" and textGPU ~= "") then
        return 0
    end

    -- Get this window's caption
    local buffer = alien.buffer(512)
    GetWindowText(handle, buffer, 511)
    local text = tostring(buffer):upper()
    local token = text:sub(1, 3)

    -- Update variables, if we've found a match
    if(token == "CPU") then
        textCPU = text:match("CPU +(.-) +")
        textCPU = format("%3.3f", tonumber(textCPU))
        tempCPU = tonumber(textCPU)
        --print(format("CPU: %3.3f, Text: %s", tempCPU, textCPU))
    elseif(token == "GPU") then
        textGPU = text:match("GPU 2 +(.-) +")
        textGPU = format("%3.3f", tonumber(textGPU))
        tempGPU = tonumber(textGPU)
        --print(format("GPU: %3.3f, Text: %s", tempGPU, textGPU))
    end
    return 1
end

-- UPDATES TEMPERATURE READOUTS, RETURNS
 -- WHETHER OR NOT WE SHOULD BE WARNING THE USER
function updateTemperatures()
    -- Step through parent windows to find the correct parent
    parentWindow = FindWindow(0, 0, windowClass, windowTitle)
    parentWindow = FindWindow(parentWindow, 0, windowClass, "")
    parentWindow = FindWindow(parentWindow, 0, windowClass, "Sensors Monitor");

    -- Initialize/reset variables
    windowProc = alien.callback(EnumChildProc, "int", "long", "long")
    textCPU = ""
    textGPU = ""
    tempCPU = 0.0
    tempGPU = 0.0

    -- Enumerate child controls
    EnumChildWindows(parentWindow, windowProc, 0)
    return (tempCPU > minCPU and tempGPU > minGPU)
end

-- D3D HOOK VARIABLES
local isD3dhook_initializeHook = false
local isTimerShowingMessageInGameMenu = false
local notificationTimer = nil


function OnCloseClick(sender)
    --closeCE() -- Kind of annoying while debugging, lol =P
    if(notificationTimer ~= nil) then
        timer_setEnabled(notificationTimer, false)
        object_destroy(notificationTimer)
        notificationTimer = nil
    end
    return caFree
end

-- SET UP THE FORM WINDOW AND CONTROLS
trainerForm = createForm()
form_onClose(trainerForm, OnCloseClick)
control_setCaption(trainerForm, 'Temperature Hook')
control_setSize(trainerForm, 250, 150)
form_centerScreen(trainerForm)

exitBtn = createButton(trainerForm)
control_setCaption(exitBtn, 'E&xit')
control_onClick(exitBtn, OnCloseClick)
control_setSize(exitBtn, 230, 60)
control_setPosition(exitBtn, 10, 80)

labelCaption1 = createLabel(trainerForm)
local caption = format("[Target Process]: \"%s\"\n[Minimum CPU Threshold]: %3.3f\n[Minimum GPU Threshold]: %3.3f\n[Manual Display Hotkey]: CTRL+1", processName, minCPU, minGPU)
control_setCaption(labelCaption1, caption)
control_setPosition(labelCaption1, 10, 10)
form_show(trainerForm)

-- ATTACH TO TARGET PROCESS
autoAttachList = getAutoAttachList()
stringlist_add(autoAttachList, processName);


function onOpenProcess(processid)
    if not isD3dhook_initializeHook then
        reinitializeSymbolhandler()
        d3dhook_initializeHook()
        isD3dhook_initializeHook = true
        ShowMessageInGame("[D3D Hook Enabled]", 300, 100, 2, 24, 10, 10)
        createHotkey(OnKeyPressSomeActivate, VK_CONTROL, VK_1)
    end
end


function OnTickTimerShowingMessageInGameMenu(senderTimer)
    timer_setEnabled(senderTimer, false)
    object_destroy(senderTimer)
    object_destroy(displayedTextObject)
    object_destroy(fontmap)
    object_destroy(font)
    isTimerShowingMessageInGameMenu = false
end


function ShowMessageInGame(stringMessage, fontWidthTextContainer, fontHeightTextContainer, timeShowing, fontSize, posX, posY)
    font = createFont()
    font_setName(font, "Trebuchet MS")
    font_setSize(font, fontSize)
    font_setColor(font, 0x0000ff)

    fontmap = d3dhook_createFontmap(font)
    displayedTextObject = d3dhook_createTextContainer(fontmap, fontWidthTextContainer, fontHeightTextContainer, stringMessage )
    d3dhook_renderobject_setY(displayedTextObject, posX)
    d3dhook_renderobject_setX(displayedTextObject, posY)

    messageTimer = createTimer(nil, false)
    timer_setInterval(messageTimer, timeShowing * 1000)
    timer_onTimer(messageTimer, OnTickTimerShowingMessageInGameMenu)
    timer_setEnabled(messageTimer, true)
    isTimerShowingMessageInGameMenu = true
end


function OnKeyPressSomeActivate()
    if not isTimerShowingMessageInGameMenu then
        if updateTemperatures() then
            local warningText = format("CPU: %3.3f\nGPU: %3.3f", tempCPU, tempGPU)
            print(warningText)
            ShowMessageInGame(warningText, 200, 100, 1, 24, 1, 1)
        end
    end
end

-- CREATE AN UPDATE TIMER FOR AUTOMATIC USER WARNINGS
notificationTimer = createTimer(nil, false)
timer_setInterval(notificationTimer, 999)
timer_onTimer(notificationTimer, OnKeyPressSomeActivate)
timer_setEnabled(notificationTimer, true)

In order to make this code work (and reproduce the above) on your system, you will need several things:
  • A MacBook Pro running Windows via bootcamp
  • A game which utilizes D3D9
  • Lubbo's MacBook Pro Fan Control
  • Possibly an outdated graphics card
  • Possibly some other stuff (like changes to window class names, etc)?

... So perhaps you'll be better off just reviewing the code itself =P
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Rectangle
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PostPosted: Fri May 17, 2013 2:29 pm    Post subject: Reply with quote
Can someone at least tell me if the rendered text issue is normal?
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Dark Byte
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PostPosted: Fri May 17, 2013 2:36 pm    Post subject: Reply with quote
When creating the font, try adding this code:
Code:

setProperty(font, "Quality", "fqNonAntialiased")

That way the chosen font shouldn't have any extra half transparent bits around the character when drawn to a non transparent bmp for the fontmap

also, make sure the X and Y positions are whole numbers. It supports floating point values, but you will get pixel tearing then (seeing from the code it should be fine)

(also, printscreen + paste in mspaint should work too)
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Rectangle
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PostPosted: Fri May 17, 2013 3:46 pm    Post subject: Reply with quote
Thanks!

Dark Byte wrote:
also, printscreen + paste in mspaint should work too


Yeah but I'm using a MacBook Pro, so there is no print screen key. =P
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atom0s
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PostPosted: Fri May 17, 2013 4:30 pm    Post subject: Reply with quote
From Google:

  • Command+Shift+3: takes a screenshot of the full screen (or screens if multiple monitors), and save it as a file to the desktop
  • Command+Shift+4: brings up a selection box so you can specify an area to take a screenshot of, then save it as a file to the desktop
  • Command+Shift+4, then spacebar, then click a window: takes a screenshot of a window only and saves it as a file to the desktop
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