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overdraw eliminated in AS mode

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@519 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-07-03 22:23:21 +00:00
parent e352c3af64
commit 97a7f774d3
3 changed files with 19 additions and 25 deletions
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16
Pico/Draw.s
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@ -1163,17 +1163,12 @@ das_no_prep:
@ time to do some real work
stmfd sp!, {r4-r11,lr}
ldr r4, =rendstatus
mov r12,#0xff
ldr r4, [r4]
strb r12,[r2,#1] @ set end marker
add r10,r2, #2
add r10,r10,r3 @ r10=HighLnSpr end
mov r8, r1, lsl #4
tst r4, #PDRAW_ACC_SPRITES
orrne r8, r8, #1
str r8, [sp, #-4] @ no calls after this point
str r1, [sp, #-4] @ no calls after this point
.if OVERRIDE_HIGHCOL
ldr r11,=HighCol
@ -1196,7 +1191,7 @@ DrawSprite: @ was: unsigned int *sprite, int sh, int acc_sprites
mov r2, r0, lsr #7
cmp r0, #0xff
ldmeqfd sp!, {r4-r11,pc} @ end of list
cmp r2, r8, lsr #5
cmp r2, r8, lsr #1
bne DrawSprite @ wrong priority
and r0, r0, #0x7f
add r0, r1, r0, lsl #3
@ -1220,7 +1215,7 @@ DrawSprite: @ was: unsigned int *sprite, int sh, int acc_sprites
mov r2, r9, asr #16 @ r2=sx
mov r9, r9, lsl #16
mov r9, r9, lsr #16
orr r9, r9, r8, lsl #27 @ r9=code|sh[31]|as[27]
orr r9, r9, r8, lsl #31 @ r9=code|sh[31]
tst r9, #0x1000
movne r4, r5, lsl #3
@ -1242,11 +1237,10 @@ DrawSprite: @ was: unsigned int *sprite, int sh, int acc_sprites
mov r5, r5, lsl #4 @ delta<<=4; // Delta of address
and r4, r9, #0x6000
orr r9, r9, r4, lsl #16
orr r9, r9, #0x10000000 @ r9=scc1 a??? ... <code> (s=shadow/hilight, cc=pal, a=acc_spr)
orrs r9, r9, #0x10000000 @ r9=scc1 ???? ... <code> (s=shadow/hilight, cc=pal)
orrs r3, r9, r9, lsl #4
mov r3, r4, lsr #9 @ r3=pal=((code>>9)&0x30);
orrmi r3, r3, #0x40 @ for shadow|as
orrmi r3, r3, #0x40 @ for sh/hi
add r6, r6, #1 @ inc now
adds r0, r2, #0 @ mov sx to r0 and set ZV flags