thnx. i've already started working on a prototype for multiple files, but it would be an excellent time saver to see both your implementations.
grtz, tom
On Nov 12, 2007 2:35 AM, simon wise simonxwise@hotmail.com wrote:
On 11 Nov 2007, at 3:43 PM, Roman Haefeli wrote:
use : gemhead translateXYZ pix_image pix_texture rectangle 20 2
i am surprised, that you got even a result with [translateXYZ]-[pix_draw]. something very important to know about Gem is, that you can work in two domains: in the openGl-domain, which is completely processed on the gpu (if supported by hardware and enabled) and in the pix domain, which is computed on the cpu. all objects of gem with pix_* in their name belong to the pix domain. what cyrilly is proposing , is to switch as soon as possible to the opengl domain in order to save cpu, since [pix_draw] usually is quite slow (with [pix_draw] you get the very same result while just burning some cpu cycles).
cyrille
oh, and is there a way to plot large image files with [pix_texture]? i'm trying to do something like this: http://shiraklasmerphotography.com/Flash_Move/movement3.htm
yeah, this is perfectly possible with the patch, that cyrille proposed. nevertheless, there are probably some hardware limitations. at least on my box, i wasn't able to texture a picture with a width of 3000px. i splitted it into 3 files à 1000px and textured them separately on three rectangles. let me know, if cannot figure out to do it, i can send you the patch.
the hardware limitation that I know of is the graphics card memory (that limits the max size any textures can be) - the way I've got around that in a more general way is splitting long images into separate 4x3 files and using an abstraction with two gemheads, alternating between the smaller files - I could also post that if you wanted.
simon