Help with a "simple" DX issue

[Tonyx97]

Hi guys, I need a solution for this problem, I'll show you a image where you can see the issue explained better than If I text it. http://gyazo.com/6f5ee8b58f530b252a685c9957ecf8f6 Thanks for read.

[Callum]

I don't think that's possible, at least by exclusively using the dxDraw functions.

[Tonyx97]

Yes, it's I saw it in a script but I want to re-script it to my way, I don't find exactly the part of the code...

[Addlibs]

You could use dxDrawImageSection with dxCreateScreenSource and dxUpdateScreenSource

Edited February 24, 2015 by Guest

[Tonyx97]

Thanks MrTasty

[JR10]

You could use dxDrawImageSection with dxCreateScreenSource and dxUpdateScreenSource

Shouldn't that be render target? Since he wants to draw a section of a dx text, not a section of the screen.

[Addlibs]

Can be done with a render target (by drawing a bit outside it) or overlapped by a screen source.. No idea which one is more efficient

[JR10]

You don't need a screen source at all. A render target will do just fine.

Create the target once (not on render), set it as the target on render, draw the text to it, reset the target and then draw the render target with dxDrawImageSection.

[Tonyx97]

Thanks you guys.

[Tonyx97]

I tried your steps JR but I didn't get it... in this image http://gyazo.com/13bf30d452c051438817a2919bbf94c2 I put the box over the text like I want, when I change the dxCreateRenderTarget alpha to true the text is still shown. Here the little code:

target = dxCreateRenderTarget ( 100, 100, false ) 
  
function onClientRendere () 
  
    dxSetRenderTarget (target, true) 
     
    dxDrawText ( "TEEEEEEEEEEEEEST", 500, 550, 500, 500, tocolor(255,255,255,255), 2, "sans", "left", "center", false, false, true, false ) 
     
    dxSetRenderTarget() 
  
    dxSetBlendMode("modulate_add") 
    dxDrawImageSection(650, 500, 50, 50, 0, 0, 50, 50, target, 0, 0, 0, tocolor(255,255,255,255), true) 
    dxSetBlendMode("blend") 
     
end 
addEventHandler ("onClientRender", getRootElement(), onClientRendere) 

[Et-win]

Use dxDrawImage instead of dxDrawImageSection

[JR10]

You're using the full width and height in dxDrawImageSection that's why it's drawing the full text, try this:

target = dxCreateRenderTarget ( 100, 100, false ) 
  
function onClientRendere () 
  
    dxSetRenderTarget (target, true) 
    dxSetBlendMode("modulate_add") 
    dxDrawText ( "TEEEEEEEEEEEEEST", 500, 550, 500, 500, tocolor(255,255,255,255), 2, "sans", "left", "center", false, false, true, false ) 
    dxSetRenderTarget() 
    dxSetBlendMode("add") 
    dxDrawImageSection(650, 500, 50, 50, 0, 0, 50, 25, target, 0, 0, 0, tocolor(255,255,255,255), true) 
    dxSetBlendMode("blend") 
end 
addEventHandler ("onClientRender", getRootElement(), onClientRendere) 

[Tonyx97]

I still can see the full text when I put alpha if render target on true. I don't know anything about this dx mechanic, so I don't have any conclusions about this issue...

[JR10]

After experimenting with it, I figured it out. For some reason, the postGUI parameter in dxDrawText causes the text to be drawn to the screen and not the render target. I also tweaked dxDrawImageSection to achieve the effect you want.

Here's the code:

target = dxCreateRenderTarget ( 500, 500, true ) 
function onClientRendere () 
    if (target) then 
        dxSetRenderTarget (target, true) 
        dxSetBlendMode("modulate_add") 
        dxDrawText ( "TEEEEEEEEEEEEEST", 0, 0, 500, 100, tocolor(255,255,255,255), 2, "sans", "left", "top", false, false, false, false ) 
        dxSetRenderTarget() 
        dxSetBlendMode("add") 
        dxDrawImage(500, 200, 500, 500, target); --Draw the full render target to check the diff, you can remove this after testing 
        dxDrawImageSection(500, 100, 500, 15, 0, 0, 500, 15, target, 0, 0, 0, tocolor(255,255,255,255), true) 
        dxSetBlendMode("blend") 
    end 
end 
addEventHandler ("onClientRender", getRootElement(), onClientRendere) 

Here's an image:

[Et-win]

This is how I do it:

sWidth, sHeight = guiGetScreenSize() --Get the screen sizes X and Y 
X, Y = 150, 16 --Create a variable presenting the X and Y sizes 
cTarget = dxCreateRenderTarget(X, Y, true) --Create a render target (box) where the text should be drawn in 
  
function testFunction() 
    if (cTarget ~= false) and (cTarget ~= nil) then 
        dxSetRenderTarget(cTarget, true) --Set the render target to cTarget so we are going to draw in that box 
        dxSetBlendMode("modulate_add") --Set the blend mode to "modulate_add" 
        dxDrawText("This is a test message", 0, -20, X, Y, tocolor(0, 255, 0, 255), 1, "sans", "center", "center", true, false, false) --Create a text in the render target. Lets cut the text in half by setting the position to -20 
        dxSetBlendMode("blend") --Set the blend mode to "blend" 
        dxSetRenderTarget() --Stop drawing in the render target 
        dxSetBlendMode("add") --Set the blend mode to "add" 
        dxDrawImage((sWidth/2)-(X/2), ((sHeight/2)-(Y/2))+20, X, Y, cTarget, 0, 0, 0, tocolor(255, 255, 255, 255), true) --Now lets draw an image of our made render target. Lets put the text in the middle of the screen (Add +20 because we removed -20 by the text's position to cut it in half) 
        dxSetBlendMode("blend") --Set the blend mode to "blend" 
    end 
end 
  
addEventHandler("onClientRender", root, testFunction) 

EDIT: You were just earlier than me JR10

[JR10]

@Et-win Why do you reset the blend mode twice? Also, this doesn't really address his issue, nor what caused the bug, he wants dxDrawImageSection not to draw the full image.

[Et-win]

@Et-win Why do you reset the blend mode twice? Also, this doesn't really address his issue, nor what caused the bug, he wants dxDrawImageSection not to draw the full image.

Ripped it out of my other script, I did draw other stuff between the first reset so that will explain why. Anyway, this would give the same effect as your script.

[JR10]

Are you sure? I mean, you're using dxDrawImage which will just draw the full image. He wants to draw a section of the image.

[Et-win]

I set the position of the text like that so it will be partially not visible, just like your code. So yes, it does. Test it

[JR10]

No need, I just didn't notice the positioning arguments.

[Tonyx97]

Thanks you so much guys