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fix cell scroll drawing

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This commit is contained in:
notaz 2017-10-08 22:33:04 +03:00
parent c041308933
commit cf07a88d6e
6 changed files with 48 additions and 17 deletions
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14
pico/draw2_arm.S
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@ -73,8 +73,17 @@ BackFillFull:
@ -------- some macros --------
@ helpers
.macro add_c24 d s c
add \d, \s, #(\c & 0x00ff00)
.if \c & 0x0000ff
add \d, \d, #(\c & 0x0000ff)
.endif
.if \c & 0xff0000
add \d, \d, #(\c & 0xff0000)
.endif
.endm
@ helper
@ TileLineSinglecol (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: pixels8_old
.macro TileLineSinglecol notsinglecol=0
and r2, r2, #0xf @ #0x0000000f
@ -411,8 +420,7 @@ DrawLayerFull:
mla r11, r4, r7, r11 @ scrpos+=8*328*(planestart-START_ROW);
@ Get vertical scroll value:
add r7, r10, #0x012000
add r7, r7, #0x000180 @ r7=Pico.vsram (Pico+0x22180)
add_c24 r7, r10, (OFS_PMEM_vsram-OFS_PMEM_vram)
ldr r7, [r7]
tst r0, r0
moveq r7, r7, lsl #22