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core vdp, arm rendering fix (1st window col prio)

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kub 2024-06-18 22:45:02 +02:00
parent e8ca10820c
commit cbb9a09837
2 changed files with 7 additions and 14 deletions
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2
pico/draw.c
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@ -566,7 +566,7 @@ static void DrawLayer(int plane_sh, u32 *hcache, int cellskip, int maxcells,
ts.nametab+=(ts.line>>4)<<shift[width];
DrawStripInterlace(&ts, plane_sh);
} else if( pvid->reg[11]&4) {
} else if (pvid->reg[11]&4) {
// shit, we have 2-cell column based vscroll
// luckily this doesn't happen too often
ts.line=ymask|(shift[width]<<24); // save some stuff instead of line

19
pico/draw_arm.S
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@ -461,7 +461,6 @@ DrawLayer:
subs r10,r10, #0x01000000
bmi .dsloop_exit
.dsloop_enter:
and r7, r5, r8
add r7, lr, r7, lsl #1 @ Pico.vram+((tilex&ts->xmask) as halfwords)
ldrh r7, [r7, r12] @ r7=code (int, but from unsigned, no sign extend)
@ -1385,6 +1384,9 @@ DrawWindow:
and r10, r10, #7
mov r10, r10, lsl #1 @ r10=ty
ldr r6, [r11, #OFS_EST_rendstatus]
ldr lr, [r11, #OFS_EST_PicoMem_vram]
mov r12, r12, lsl #10
tst r4, #1 @ 40 cell mode?
@ -1394,12 +1396,6 @@ DrawWindow:
addeq r12, r12, r5, lsl #6 @ nametab
add r12, r12, r0, lsl #2 @ +starttile
ldr lr, [r11, #OFS_EST_PicoMem_vram]
ldr r6, [r11, #OFS_EST_rendstatus]
@ fetch the first code now
ldrh r7, [lr, r12]
ands r6, r6, #PDRAW_WND_DIFF_PRIO
cmpeq r2, #1 @ prio && !(rendstatus & WND_DIFF_PRIO)?
ldmeqfd sp!, {r4-r11,pc} @ yes, assume that whole window uses same priority
@ -1412,20 +1408,18 @@ DrawWindow:
@ cache some stuff to avoid mem access
ldr r11, [r11, #OFS_EST_HighCol]
mov r8, r8, lsl #1 @ cells
add r11,r11,#8
mvn r9, #0 @ r9=prevcode=-1
add r1, r11, r0, lsl #4 @ r1=pdest
add r1, r11, r0, lsl #4 @ r1=pdest=HighCol+starttile (+8 added in loop)
mov r0, #0xf
b .dwloop_enter
@ r4,r5 are scratch in this loop
.dwloop:
add r1, r1, #8
.dwloop_nor1:
add r12, r12, #2 @ halfwords
ldrh r7, [lr, r12] @ r7=code (int, but from unsigned, no sign extend)
add r12, r12, #2 @ halfwords
subs r8, r8, #1
beq .dwloop_end @ done
bmi .dwloop_end @ done
eor r5, r6, r7, lsr #15
tst r5, #1
@ -1435,7 +1429,6 @@ DrawWindow:
cmp r7, r9
beq .dw_samecode @ we know stuff about this tile already
.dwloop_enter:
mov r9, r7 @ remember code
movs r2, r9, lsl #20 @ if (code&0x1000)