[whatwg] Canvas element image scaling
ian at hixie.ch
Mon Dec 27 23:53:41 PST 2010
On Sat, 18 Sep 2010, Rob Evans wrote:
> Has the canvas spec changed the way the drawImage function scales before
> drawing to canvas?
On Sat, 18 Sep 2010, Tab Atkins Jr. wrote:
> It doesn't specify how the function scales at all: "Note: This
> specification does not define the algorithm to use when scaling the
> image, if necessary.".
On Sun, 19 Sep 2010, Rob Evans wrote:
> Thanks for the reply. I'm already using high resolution images and I
> cannot cut sections of the image off because I am not using canvas to
> create thumbnails, I'm using it to create a game engine. I guess this is
> a question I will have to take up with the Firefox and Chrome developers
> directly, unless there are any devs here that know why I'm seeing a
> dramatic difference in scaling quality?
This sounds like a quality-of-implementation issue.
On Fri, 24 Sep 2010, Ruben Rodriguez II wrote:
> Forgive me as I have not kept up with all the discussions on this list,
> but have there been any suggestions with regards to NOT using a filter
> for rescaling? That would be ideal for 'old-skool' graphics where
> pixellation is actually desired, not smoothing.
It's on the list of things to look at in future versions. In the meantime,
browsers are experimenting in this area.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
More information about the whatwg