Re: "Questions that don't deserve their own thread" thread
Posted: Wed Jul 16, 2014 9:56 pm
Oh I didn't detect his sarcasm 
, I can't create a new file because the images are going to be dynamicly modified, and the 4096x4096 image was just an exemple, I'm not gonna use an image that big (some GPU can't even handle those kind of dimensions).
I don't think that making them smaller in LOVE (using the scale factor) would have any impact in the memory being used.
I tried canvases and I think it worked, , I load 149 images into the game without using canvas:
(if you don't understand the scaling calculator then ignore it, just know that the return value is <= 1)
I then draw all the images to the screen with the calculated scale and task manager says that love is taking 42MB of RAM.
Then I test again using canvas:
And the memory lowers to 40MB, pretty cool huh ?
, I can't create a new file because the images are going to be dynamicly modified, and the 4096x4096 image was just an exemple, I'm not gonna use an image that big (some GPU can't even handle those kind of dimensions).I don't think that making them smaller in LOVE (using the scale factor) would have any impact in the memory being used.
I tried canvases and I think it worked, , I load 149 images into the game without using canvas:
Code: Select all
for i,v in ipairs(love.filesystem.getDirectoryItems('assets/UI/PNG')) do
if v:find('.png') then
thumbs[#thumbs+1] = {love.graphics.newImage('assets/UI/PNG/'..v),love.graphics.newImage('assets/UI/PNG/'..v):getWidth() > love.graphics.getWidth()/5 +2 and
(love.graphics.getWidth()/5)/love.graphics.newImage('assets/UI/PNG/'..v):getWidth()
or love.graphics.newImage('assets/UI/PNG/'..v):getHeight() > love.graphics.getHeight()/8 +2 and
(love.graphics.getHeight()/8)/love.graphics.newImage('assets/UI/PNG/'..v):getHeight()
or 1} --calculated scaling factor
end
endI then draw all the images to the screen with the calculated scale and task manager says that love is taking 42MB of RAM.
Then I test again using canvas:
Code: Select all
for i,v in ipairs(thumbs) do
local canvas = love.graphics.newCanvas(v[1]:getWidth()*v[2], v[1]:getWidth()*v[2])
love.graphics.setCanvas(canvas)
love.graphics.setColor(255, 255, 255)
love.graphics.draw(v[1], 0, 0, 0, v[2])
love.graphics.setCanvas()
thumbs[i][1] = canvas --replaces old big image with the new small canvas
endAnd how can I compress a PNG into DXT, are there any tools to do this ?slime wrote:For even more RAM/VRAM usage optimization, you could convert the textures to DXT1 or DXT5 (depending on if they're fully opaque or not). DXT-compressed textures stay compressed in RAM and in VRAM, unlike regular image formats.
