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Age	Commit message (Collapse)	Author
2014-04-12	libmemdraw: improve readbyte() and writebyte() routines	cinap_lenrek
	remove unused memsetb() routine. replace foo ? 1 : 0 with foo != 0 avoid double calculation of rgb components in readbyte() handle byte aligned color components in writebyte() which lets us avoid the read-modify-write and the shifting. surprisingly, the branches in the loop are way less important than avoiding the memory access. this change makes ganes/snes playable at -3 scaling.
2014-02-01	libmemdraw: apply erik quanstros fix for sign preserving in byteaddr()	cinap_lenrek

2013-12-09	draw: fix drawing of replicated source image on memlayer with a clip rectangle	cinap_lenrek
	when a replicated source image with a clipr with clipr.min > Pt(0, 0), drawclip() would properly translate the src->clipr on the dstr but then clamp the source rectangle back on src->r. while traversing down multiple layers, this would cause the translation to be applied multiple times to the dst rectangle giving the wrong image result. this change adds a new drawclipnorepl() function that avoids the clamping of source and mask rectangles to src->r and mask->r. this is then used in libmemlayer. the final memimagedraw() call will call drawclip() which will do the final claming. a testcase is provided: #include <u.h> #include <libc.h> #include <draw.h> Image blue; Image red; void main(int, char argv[]) { Image i; if(initdraw(nil, nil, argv[0]) < 0) sysfatal("initdraw: %r"); i = allocimage(display, screen->r, screen->chan, 1, DWhite); red = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed); blue = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DPaleblue); replclipr(red, 1, Rect(10, 10, 110, 110)); replclipr(blue, 1, Rect(11, 11, 111, 111)); /* draw on non-layer, works correctly / draw(i, i->r, red, nil, ZP); draw(i, i->r, blue, nil, ZP); draw(screen, screen->r, i, nil, i->r.min); flushimage(display, 1); / draw on (screen) layer is too far to the right */ draw(screen, screen->r, red, nil, ZP); draw(screen, screen->r, blue, nil, ZP); flushimage(display, 1); for(;;){ sleep(1000); } }
2013-11-12	libmemdraw: change memimageinit() to return integer error (for kernel), ↵	cinap_lenrek
	minor cleanups
2013-06-16	draw: add badrect() function to reject zero, negative size or orverly huge ↵	cinap_lenrek
	rectangles not checking the rectangle dimensions causes integer overflows and memory corruption. adding a new badrect() function that checks for these cases.
2013-06-16	libmemdraw: fix drawing to color mapped with alpha chan (m8a8)	cinap_lenrek

2011-09-04	libdraw: reduce memory for writeimage/writememimage	cinap_lenrek

2011-09-04	libdraw: fix unloadimage() for wide images, libmemdraw: work arround width ↵	cinap_lenrek
	limit by outputting uncompressed image in writememimage() if compressed blocksize exceeds chunk limit
2011-04-11	vesa-changes	cinap_lenrek

2011-03-30	Import sources from 2011-03-30 iso image - lib	Taru Karttunen

2011-03-30	Import sources from 2011-03-30 iso image	Taru Karttunen