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renderer bugfix, minor adjustments

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@395 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-03-25 22:37:37 +00:00
parent bdec53c90b
commit 7b802576b2
6 changed files with 21 additions and 12 deletions
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14
Pico/Draw.s
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@ -444,8 +444,8 @@ DrawLayer:
.DrawStrip_vsscroll:
rsb r8, r3, #0
mov r8, r8, lsr #3 @ r8=tilex=(-ts->hscroll)>>3
bic r8, r8, #0xff000000
orr r8, r8, r5, lsl #25 @ r8=(xmask[31:25]|had_output[24]|tilex[23:0])
bic r8, r8, #0x3fc00000
orr r8, r8, r5, lsl #25 @ r8=(xmask[31:25]|had_output[24]|tilex[21:0])
ldr r4, =Scanline
orr r5, r1, r10, lsl #24
@ -504,9 +504,9 @@ DrawLayer:
ldrh r7, [r7] @ r7=vscroll
bic r10,r10,#0xff @ clear old ty
and r4, r5, #0xff0000
add r4, r4, r7, lsl #16
and r4, r4, r5, lsl #16 @ r4=line<<16
and r4, r5, #0xff0000 @ scanline
add r4, r4, r7, lsl #16 @ ... += vscroll
and r4, r4, r5, lsl #16 @ ... &= ymask
and r7, r4, #0x70000
orr r10,r10,r7, lsr #15 @ new ty
@ -529,7 +529,7 @@ DrawLayer:
beq .DrawStrip_vs_samecode @ we know stuff about this tile already
mov r9, r7 @ remember code
orr r8, r8, #1<<24 @ seen non hi-prio tile
orr r8, r8, #(1<<24)@ seen non hi-prio tile
movs r2, r9, lsl #20 @ if (code&0x1000)
mov r2, r2, lsl #1
@ -603,7 +603,7 @@ DrawLayer:
b .dsloop_vs
.dsloop_vs_exit:
tst r8, #1<<24 @ seen non hi-prio tile
tst r8, #(1<<24) @ seen non hi-prio tile
ldreq r1, =rendstatus
mov r0, #0
ldreq r2, [r1]