size of image in 640*480

BlitzMax Forums/BlitzMax Beginners Area/size of image in 640*480

Pit-le-rouge (Posted 2005) [#1]

Hi everybody. I created some images in PNG format. When I use it after "graphics 640, 480" (and without any "setscale" call), these images appears with scale twice than expected. If I use it after "graphics 800, 600" then the size is what I expected when I created the image. I don't understand why... An explanation ?

Pit-le-rouge (Posted 2005) [#2]

OK, forget for the post.... I just realize that it's normal. "Real" size of 20 pixels is bigger in a 640*480 format than in a 800*600 format. I must be stupid.... ;-)

Gabriel (Posted 2005) [#3]

Yes you'll need to write a little function for resolution independence. I work at 1024x768 and scale up/down from there, but it's very easy to do.

Hotcakes (Posted 2005) [#4]

800 is not exactly twice 640 though ;]

RexRhino (Posted 2005) [#5]

Yeah, Blitz2D is supposed to be an imitation of the pixel perfect old school bliting style, not a real 2D as 3D thing. I like it this way... When I tried doing 2D as 3D stuff with Blitz3D, getting it pixel perfect was difficult.