about drawing images

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NC22
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about drawing images

Post by NC22 » Wed Aug 10, 2011 4:33 pm

I test LOVE game on two computers. One of them is netbook with mobile graphic card , second is usual PC. When I run game on netbook all images who have not standard size (26x26 25x25 etc) Love render as white cubes . On PC all renders fine. Have any ideas how to fix that? Is the problem of compatibility?
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kikito
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Re: about drawing images

Post by kikito » Wed Aug 10, 2011 4:36 pm

That looks like a case of PO2_Syndrome
When I write def I mean function.

NC22
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Re: about drawing images

Post by NC22 » Wed Aug 10, 2011 5:03 pm

thx! Simple and helpful solution posted by Robin

Code: Select all

local nwimage = love.graphics.newImage
	function love.graphics.newImage(source)
		if type(source) == "string" then
			source = love.image.newImageData(source)
		end
		local w, h = source:getWidth(), source:getHeight()
		local wp = math.pow(2, math.ceil(math.log(w)/math.log(2)))
		local hp = math.pow(2, math.ceil(math.log(h)/math.log(2)))
		if wp ~= w or hp ~= h then
			local padded = love.image.newImageData(wp, hp)
			padded:paste(source, 0, 0)
			return nwimage(padded)
		end
		return nwimage(source)
	end

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Robin
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Re: about drawing images

Post by Robin » Wed Aug 10, 2011 9:02 pm

Not originally my code, but glad I could "help". ;)

Also, some time in the future (probably sooner rather than later), LÖVE 0.8.0 will come out, and it has auto-padding for computers that need it, which means you don't have to worry about all that any more.
Help us help you: attach a .love.

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ntpspe
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Re: about drawing images

Post by ntpspe » Thu Aug 11, 2011 5:21 am

Hmm I've never encountered this PO2 Syndrome, possibly because I always use numbers that are powers of two instinctively, seems to make more sense to me... that a bad thing?

Also, does this PO2S affect only LOVE/Lua or is it applicable to other things such as C+ e.c.t.? It's interesting to say the least, I can't understand why a graphics card can't display something just because it's not a power of 2 :L if it affects other things then hardware manufacturers should be ashamed... or are we talking win98 cards/drivers? :P

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Ensayia
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Re: about drawing images

Post by Ensayia » Thu Aug 11, 2011 6:08 am

PO2 syndrome is caused by graphics drivers. Nvidia cards usually don't have the problem but ATI cards do from what I hear.

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vrld
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Re: about drawing images

Post by vrld » Thu Aug 11, 2011 7:27 am

Sometimes these errors can be fixed by updating the graphics drivers. At least with Intel cards that is.
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TechnoCat
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Re: about drawing images

Post by TechnoCat » Thu Aug 11, 2011 12:25 pm

vrld wrote:Sometimes these errors can be fixed by updating the graphics drivers. At least with Intel cards that is.
How do I update them on Ubuntu?

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T-Bone
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Re: about drawing images

Post by T-Bone » Thu Aug 11, 2011 1:14 pm

TechnoCat wrote:
vrld wrote:Sometimes these errors can be fixed by updating the graphics drivers. At least with Intel cards that is.
How do I update them on Ubuntu?
In the dash, type and click on Hardware Drivers :neko:

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ntpspe
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Re: about drawing images

Post by ntpspe » Thu Aug 11, 2011 3:14 pm

There's no hardware drivers avaliable for my machine >.< Advent 4211 (rebranded MSI wind) I was looking for ways to just download the drivers from a website and use them with ubuntu, but meh... it works, that's all that matters.
From what PCWorld told me, my computer doesn't have a proper graphics card, just the default motherboard one for the monitor, and uses Intel express media accelerator... and they were confused that this netbook ran doom3 :P

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