mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-22 06:43:28 +03:00
13694b9ade
(Author: codemaster; initially sources are uploaded to SVN "as is" without modification) ### Redo r.5303 with correct letter case for auto-build machine ### git-svn-id: svn://kolibrios.org@5305 a494cfbc-eb01-0410-851d-a64ba20cac60
385 lines
7.8 KiB
PHP
385 lines
7.8 KiB
PHP
; $$$$$$$$$$$$$$$$$$$ ABAKIS $$$$$$$$$$$$$$$$$$$$$
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; *************** STAR^2 SOFTWARE ****************
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; ?????????????????? DRAW.INC ????????????????????
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; fast portable graphics
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include 'color.inc'
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include 'box.inc'
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;;;;;;;;;;;;;;;;;;;;; SCREEN ;;;;;;;;;;;;;;;;;;;;;
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align
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void vga.p
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integer screen.x, screen.y,\
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screen.w, screen.h, screen.n,\
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screen.bpp, screen.size,\
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screen.pw, screen.pitch
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void palette.p
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BOX g.box
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function set.screen, w, h, bpp
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alias n=r0, pw=r1
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. screen.w=w, screen.h=h ; size
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. n=w, n*h, screen.n=n ; # pixels
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. pw=bpp, pw/8 ; pixel width
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. screen.pw=pw, n*pw ; screen size
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. screen.size=n ; in bytes
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. n=w, n*pw ; screen pitch
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. screen.pitch=n ; w in bytes
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. screen.bpp=bpp ; bits per pixel
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endf
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;;;;;;;;;;;;;;;;;;;; DRAWING ;;;;;;;;;;;;;;;;;;;;;
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; erase screen with color
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function clear.screen, c
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alias p=r0, n=r1, z=r2
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. p=vga.p, n=screen.n, z=c
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loop n, (u32) *p++=z, endl
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endf
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; calculate x/y offset: (y*screen.w+x)*4
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macro get.xy x, y
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{ . r0=y, r0*screen.w, r0+x, r0*4 }
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; address &vga[(y*screen.w+x)*4]
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function vga.xy, x, y
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get.xy x, y
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. r0+vga.p
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endf
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; draw pixel
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function draw.pixel, x, y, c
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alias p=r0, z=r1
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try clip.pixel x, y
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vga.xy x, y
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. z=c, (u32) *p=z
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endf 1
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; draw horizontal line
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function draw.line.h, x, y, n, c
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alias p=r0, z=r1, w=r2
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. p=&x, z=&y, w=&n
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try clip.line 0, p, z, w
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vga.xy x, y
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. z=c
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loop n, (u32) *p++=z, endl
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endf 1
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; draw vertical line
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function draw.line.v, x, y, n, c
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locals swb
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alias p=r0, z=r1, h=r2
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. p=&x, z=&y, h=&n
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try clip.line 1, p, z, h
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vga.xy x, y
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. z=c, swb=screen.pitch
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loop n, (u32) *p=z, p+swb, endl
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endf 1
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; draw solid rectangle
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function draw.box, x, y, w, h, c
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locals i
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try visible x, y, w, h
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. i=y, i--
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loop h, i++
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draw.line.h x, i, w, c
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endl
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endf 1
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; draw rectangle outline
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function draw.outline, x, y, w, h, c
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try visible x, y, w, h
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draw.line.h x, y, w, c ; top
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. r0=y, r0+h, r0-- ; bottom
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draw.line.h x, r0, w, c
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. r0=y, r0++, r1=h, r1-2 ; left
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draw.line.v x, r0, r1, c
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. r0=x, r0+w, r0--
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. r2=y, r2++, r1=h, r1-2 ; right
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draw.line.v r0, r2, r1, c
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endf 1
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macro draw.box.s b, c
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{ draw.box b#.x, b#.y, b#.w, b#.h, c }
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macro draw.box.o b, c
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{ draw.outline b#.x, b#.y, b#.w, b#.h, c }
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macro draw.box a, b, c, d, e {
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IF ~e eq
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draw.box a, b, c, d, e
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ELSE IF ~d eq
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'Unsupported'
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ELSE IF ~c eq
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draw.box.s a, b
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draw.box.o a, c
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ELSE IF ~b eq
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draw.box.s a, b
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END IF
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}
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; draw scanline
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function draw.scanline, pixels, x, y, w
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locals i
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alias p=r0, s=r1
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. r0=&i, r1=&x, r2=&y, r3=&w
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try clip.scanline r0, r1, r2, r3
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vga.xy x, y
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. s=pixels, s+i
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loop w, (u32) *p++=*s++, endl
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endf 1
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; draw scanline with transparent key
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function draw.scanline.t, pixels, x, y, w, key
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locals i
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alias p=r0, s=r1, c=r2
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. r0=&i, r1=&x, r2=&y, r3=&w
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try clip.scanline r0, r1, r2, r3
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vga.xy x, y
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. s=pixels, s+i
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loop w, (u32) c=*s++
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if c<>key, (u32) *p=c, end, p+4
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endl
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endf 1
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; draw scanline with inverted x
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function draw.scanline.ix, pixels, x, y, w
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locals i
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alias p=r0, s=r1
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. r0=x, r0+w
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vga.xy r0, y
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. p-4, s=pixels
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loop w, (u32) *p--=*s++, endl
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endf 1
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; draw variant scanline. pixels are
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; grayscale, alpha intensity of co=color.
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; for brushes and special effects
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function draw.scanline.v, pixels, x, y, w, co
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locals a, i
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alias p=r0, s=r1, c=r2, c2=r3
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. r0=&i, r1=&x, r2=&y, r3=&w
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try clip.scanline r0, r1, r2, r3
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vga.xy x, y
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. s=pixels, s+i
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loop w, (u32) c=*s++
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. a=c, a&0FFh
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if a=0, go .next, end
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if a=0FFh, c=co, go .draw, end
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. (u32) c2=*p
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push p s
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get c=mix co, c2, a
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pop s p
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.draw: . (u32) *p=c
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.next: . p+4
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endl
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endf 1
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; draw bitmap
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function draw.bitmap, pixels, x, y, w, h
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locals i, p
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try visible x, y, w, h
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. i=y, p=pixels
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loop h
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draw.scanline p, x, i, w
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. r0=w, r0*4, p+r0, i++
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endl
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endf 1
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; draw bitmap with transparency by
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; upper left pixel color (X=0, Y=0)
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function draw.bitmap.t, pixels, x, y, w, h
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locals i, p, key
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try visible x, y, w, h
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. i=y, r0=pixels, p=r0
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. (u32) r0=*r0, key=r0
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loop h
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draw.scanline.t p, x, i, w, key
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. r0=w, r0*4, p+r0, i++
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endl
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endf 1
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; draw bitmap with inverted x
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function draw.bitmap.ix, pixels, x, y, w, h
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locals i, p
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try visible x, y, w, h
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. p=pixels
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loop h
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draw.scanline.ix p, x, y, w
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. r0=w, r0*4, p+r0, y++
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endl
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endf 1
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; draw bitmap with inverted y
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function draw.bitmap.iy, pixels, x, y, w, h
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locals i, p
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try visible x, y, w, h
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. r0=h, r0--, y+r0, p=pixels
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loop h
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draw.scanline p, x, y, w
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. r0=w, r0*4, p+r0, y--
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endl
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endf 1
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; draw bitmap with both inverted
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function draw.bitmap.ixy, pixels, x, y, w, h
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locals i, p, n
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try visible x, y, w, h
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. p=pixels
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loop h
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draw.scanline.ix p, x, y, w
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. r0=w, r0*4, p+r0, y--
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endl
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endf 1
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; draw variant bitmap
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function draw.bitmap.v, pixels, x, y, w, h, c
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locals i, p
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try visible x, y, w, h
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. i=y, r0=pixels, p=r0
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loop h
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draw.scanline.v p, x, i, w, c
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. r0=w, r0*4, p+r0, i++
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endl
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endf 1
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; draw gradual vertical fade from
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; color a to b. o/rient:
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; 'h'=horizontal, 'v'=vertical
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function draw.fade, bo, c1, c2
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locals x, y, w, h, i, n, c,\
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r, g, b, red, green, blue,\
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nr, ng, nb, first, last
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. r0=bo,\
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x=[?box.x+r0], y=[?box.y+r0],\
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w=[?box.w+r0], h=[?box.h+r0]
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. r0=y, first=r0, r1=h
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. n=r1, r0+r1, last=r0
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. r0=&r, r1=&g, r2=&b
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get.rgb c1, r0, r1, r2
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. r0=&red, r1=&green, r2=&blue
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get.rgb c2, r0, r1, r2
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. r<<8, g<<8, b<<8, r1=n
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if r1=0, r1++, end
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. r0=red, r0<<8, r0-r, r0/r1, nr=r0
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. r0=green, r0<<8, r0-g, r0/r1, ng=r0
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. r0=blue, r0<<8, r0-b, r0/r1, nb=r0
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. i=first
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forever
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. r0=r, r0>>8, r1=g, r1>>8, r2=b, r2>>8
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get c=rgb r0, r1, r2
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draw.line.h x, i, w, c
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. r0=nr, r+r0, r1=ng, g+r1, r2=nb, b+r2
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. i++, r0=last
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if i>r0, go .out, end
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endfv
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.out:
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endf
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; draw with vertical center fade:
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; a to b then b to a
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function draw.shade, bo, a, b
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memory.copy g.box, bo, 16
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. g.box.h>>>1
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draw.fade g.box, a, b
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. r0=g.box.h, g.box.y+r0
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draw.fade g.box, b, a
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endf
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;;;;;;;;;;;;;;;;; PALETTE PIXELS ;;;;;;;;;;;;;;;;;
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; 8BPP versions with pa/lette. no clipping
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function draw.scanline.8, pixels, x, y, w
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alias p=r0, s=r1, c=r2, q=r3
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vga.xy x, y
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. s=pixels
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loop w, q=*s++, q*4, q+palette.p
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. (u32) c=*q, (u32) *p++=c
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endl
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endf 1
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function draw.bitmap.8, pixels, x, y, w, h
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locals i, p
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try visible x, y, w, h
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. i=y, i--, p=pixels
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loop h, i++
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draw.scanline.8 p, x, i, w
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. r0=w, p+r0
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endl
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endf 1
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;;;;;;;;;;;;;;;;;;;;; SPECIAL ;;;;;;;;;;;;;;;;;;;;
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; special variant 8BPP with alpha bias for
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; fonts and sketching effects (example:
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; chalkboard)
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A.LIGHTEST=128
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A.LIGHTER=96
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A.LIGHT=64
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A.DARK=-32
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A.DARKER=-64
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A.DARKEST=-96
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align
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integer alpha.bias=0 ; A.DARKEST
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function draw.scanline.v.8, pixels, x, y, w, co
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locals a, i
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alias p=r0, s=r1, c=r2, c2=r3, q=r3
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vga.xy x, y
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. s=pixels
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loop w, q=*s++, q*4, q+palette.p
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. (u32) c=*q, a=c, a&0FFh
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if a=0, go .next, end
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. (u32) c2=*p
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push p s
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. r0=a
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if alpha.bias, r0+alpha.bias
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if r0<0, r0=0
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else.if r0>255, r0=255, end
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end
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get c=mix co, c2, r0
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pop s p
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.draw: . (u32) *p=c
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.next: . p+4
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endl
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endf 1
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function draw.bitmap.v.8, pixels, x, y, w, h, c
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locals i, p
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try visible x, y, w, h
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. i=y, i--, p=pixels
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loop h, i++
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draw.scanline.v.8 p, x, i, w, c
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. r0=w, p+r0
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endl
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endf 1 |