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optimized gfx2.vertical_line for hires monochrome mode
This commit is contained in:
Irmen de Jong
parent
481214c46e
commit
306a1b7bc2
@ -293,17 +293,17 @@ _done
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sub vertical_line(uword x, uword y, uword height, ubyte color) {
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when active_mode {
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1 -> {
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1, 5 -> {
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; monochrome, lo-res
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cx16.r15L = gfx2.plot.bits[x as ubyte & 7] ; bitmask
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if color {
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if monochrome_dont_stipple_flag {
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; draw continuous line.
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position2(x,y,true)
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cx16.VERA_CTRL = 0
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (11<<4) ; 40 increment = 1 line in 320 px monochrome
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cx16.VERA_CTRL = 1
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (11<<4) ; 40 increment = 1 line in 320 px monochrome
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if active_mode==1
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set_both_strides(11) ; 40 increment = 1 line in 320 px monochrome
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else
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set_both_strides(12) ; 80 increment = 1 line in 640 px monochrome
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repeat height {
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%asm {{
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lda cx16.VERA_DATA0
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@ -318,10 +318,10 @@ _done
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height--
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}
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position2(x,y,true)
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cx16.VERA_CTRL = 0
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (12<<4) ; 80 increment = 2 line in 320 px monochrome
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cx16.VERA_CTRL = 1
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (12<<4) ; 80 increment = 2 line in 320 px monochrome
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if active_mode==1
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set_both_strides(12) ; 80 increment = 2 line in 320 px monochrome
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else
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set_both_strides(13) ; 160 increment = 2 line in 640 px monochrome
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repeat height/2 {
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%asm {{
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lda cx16.VERA_DATA0
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@ -333,10 +333,10 @@ _done
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} else {
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position2(x,y,true)
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cx16.r15 = ~cx16.r15 ; erase pixels
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cx16.VERA_CTRL = 0
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (11<<4) ; 40 increment = 1 line in 320 px monochrome
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cx16.VERA_CTRL = 1
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (11<<4) ; 40 increment = 1 line in 320 px monochrome
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if active_mode==1
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set_both_strides(11) ; 40 increment = 1 line in 320 px monochrome
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else
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set_both_strides(12) ; 80 increment = 1 line in 640 px monochrome
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repeat height {
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%asm {{
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lda cx16.VERA_DATA0
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@ -346,92 +346,6 @@ _done
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}
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}
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}
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5 -> {
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; monochrome, highres
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; note for the 1 bpp modes we can't use vera's auto increment mode because we have to 'or' the pixel data in place.
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; TODO use TWO vera adress pointers simultaneously one for reading, one for writing, so auto-increment IS possible
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position(x,y)
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cx16.VERA_ADDR_H &= %00000111 ; no auto advance
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cx16.r15 = gfx2.plot.bits[x as ubyte & 7] ; bitmask
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cx16.r14 = 640/8
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if color {
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if monochrome_dont_stipple_flag {
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repeat height {
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%asm {{
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lda cx16.VERA_DATA0
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ora cx16.r15
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sta cx16.VERA_DATA0
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lda cx16.VERA_ADDR_L
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clc
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adc cx16.r14 ; advance vera ptr to go to the next line
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sta cx16.VERA_ADDR_L
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lda cx16.VERA_ADDR_M
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adc #0
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sta cx16.VERA_ADDR_M
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; lda cx16.VERA_ADDR_H ; the bitmap size is small enough to not have to deal with the _H part.
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; adc #0
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; sta cx16.VERA_ADDR_H
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}}
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}
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} else {
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; stippling.
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height = (height+1)/2 ; TODO is the line sometimes 1 pixel too long now because of rounding?
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%asm {{
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lda x
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eor y
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and #1
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bne +
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lda cx16.VERA_ADDR_L
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clc
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adc cx16.r14 ; advance vera ptr to go to the next line for correct stipple pattern
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sta cx16.VERA_ADDR_L
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lda cx16.VERA_ADDR_M
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adc #0
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sta cx16.VERA_ADDR_M
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+
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asl cx16.r14
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ldy height
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beq +
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- lda cx16.VERA_DATA0
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ora cx16.r15
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sta cx16.VERA_DATA0
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lda cx16.VERA_ADDR_L
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clc
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adc cx16.r14 ; advance vera data ptr to go to the next-next line
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sta cx16.VERA_ADDR_L
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lda cx16.VERA_ADDR_M
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adc #0
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sta cx16.VERA_ADDR_M
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; lda cx16.VERA_ADDR_H ; the bitmap size is small enough to not have to deal with the _H part.
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; adc #0
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; sta cx16.VERA_ADDR_H
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dey
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bne -
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+
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}}
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}
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} else {
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cx16.r15 = ~cx16.r15
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repeat height {
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%asm {{
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lda cx16.VERA_DATA0
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and cx16.r15
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sta cx16.VERA_DATA0
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lda cx16.VERA_ADDR_L
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clc
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adc cx16.r14 ; advance vera data ptr to go to the next line
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sta cx16.VERA_ADDR_L
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lda cx16.VERA_ADDR_M
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adc #0
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sta cx16.VERA_ADDR_M
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; the bitmap size is small enough to not have to deal with the _H part:
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; lda cx16.VERA_ADDR_H
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; adc #0
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; sta cx16.VERA_ADDR_H
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}}
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}
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}
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}
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4 -> {
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; lores 256c
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; set vera auto-increment to 320 pixel increment (=next line)
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@ -453,10 +367,7 @@ _done
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if height==0
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return
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position2(x,y,true)
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cx16.VERA_CTRL = 0
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (13<<4) ; 160 increment = 1 line in 640 px 4c mode
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cx16.VERA_CTRL = 1
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | (13<<4) ; 160 increment = 1 line in 640 px 4c mode
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set_both_strides(13) ; 160 increment = 1 line in 640 px 4c mode
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color &= 3
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color <<= gfx2.plot.shift4c[lsb(x) & 3]
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ubyte mask = gfx2.plot.mask4c[lsb(x) & 3]
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@ -471,6 +382,14 @@ _done
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}
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}
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sub set_both_strides(ubyte stride) {
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stride <<= 4
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cx16.VERA_CTRL = 0
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | stride
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cx16.VERA_CTRL = 1
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | stride
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}
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}
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sub line(uword @zp x1, uword @zp y1, uword @zp x2, uword @zp y2, ubyte color) {
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@ -633,6 +552,7 @@ _done
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uword addr
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ubyte value
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; TODO get rid of all the vpoke calls to optimize all plot() ?
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when active_mode {
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1 -> {
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; lores monochrome
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@ -659,7 +579,7 @@ _done
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cx16.vpoke(lsb(cx16.r1), cx16.r0, color)
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; activate vera auto-increment mode so next_pixel() can be used after this
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cx16.VERA_ADDR_H = cx16.VERA_ADDR_H & %00000111 | %00010000
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color = cx16.VERA_DATA0
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cx16.r0L = cx16.VERA_DATA0 ; advance 1
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}
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5 -> {
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; highres monochrome
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@ -4,24 +4,25 @@
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main {
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sub start() {
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gfx2.screen_mode(1) ; lo res monochrome
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gfx2.screen_mode(1) ; high res 4c
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gfx2.text_charset(3)
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gfx2.text(10, 10, 1, @"Hello!")
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c64.SETTIM(0,0,0)
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repeat 4 {
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repeat 2 {
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uword xx
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gfx2.monochrome_stipple(true)
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for xx in 0 to 319 {
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gfx2.vertical_line(xx, 20, 210, 1)
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gfx2.vertical_line(xx, 20, 200, 1)
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}
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gfx2.monochrome_stipple(false)
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for xx in 0 to 319 {
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gfx2.vertical_line(xx, 20, 210, 1)
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gfx2.vertical_line(xx, 20, 200, 1)
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}
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for xx in 0 to 319 {
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gfx2.vertical_line(xx, 20, 210, 0)
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gfx2.vertical_line(xx, 20, 200, 0)
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}
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}
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