0.6.0: red ball is a white square...

[subrime]

Am I doing something wrong?

From the docs so far, I would imaging the following would put an image on the screen...

Code: Select all

ball=love.graphics.newImage('redball.png')
function love.draw()
  love.graphics.draw(ball,200,200)
end

but all it does is put a white square there instead of my lovely red ball...

Is my code wrong or is it a problem with Love?

(version 0.6.0, 20091123-20387c3a3d7c built from source on debian stable)

[bartbes]

The image's size is wrong. Older video cards/drivers have problems with images not being power-of-two sizes.

[Robin]

The image's size is wrong. Older video cards/drivers have problems with images not being power-of-two sizes.

IIRC you have three options:

1. Update drivers(?)
2. Change the image size yourself
3. Wait until a image:padForCrappyDrivers() is implemented

[subrime]

Aha... well, does this count as implemented?

Code: Select all

function fixed_newImageData(file)
  local i=love.image.newImageData(file)
  local x,y,nx,ny=i:getWidth(),i:getHeight(),1,1
  while nx<x do nx=nx*2 end
  while ny<y do ny=ny*2 end
  local f=love.image.newImageData(nx,ny)
  f:paste(i,0,0,0,0,x,y)
  return f
end

[Robin]

Aha... well, does this count as implemented?

That depends... does it work?

[bartbes]

This seems like a good solution, though I wonder if this might be more efficient:

Code: Select all

nx = math.ceil(math.log(x)/math.log(2))
ny = math.ceil(math.log(y)/math.log(2))

[Robin]

This seems like a good solution, though I wonder if this might be more efficient:

Code: Select all

nx = math.ceil(math.log(x)/math.log(2))
ny = math.ceil(math.log(y)/math.log(2))

Ah, but then, what about this:

Code: Select all

local mc, ml = math.ceil, math.log
local ml2inv = 1/ml(2)
nx = mc(ml(x)*ml2inv)
ny = mc(ml(y)*ml2inv)

... or maybe that makes it worse.

Of course, it won't matter that much, since you would never execute this code inside the game loop anyway.

[subrime]

yes it works, though I would suggest that if you are concerned about speed it could be implemented in c with the rest of love.

[bartbes]

I'll discuss it with rude.

EDIT: btw i just realized I forgot to actually do the math.pow in my snippet, so that won't function.