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32x, arm asm draw optimization

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This commit is contained in:
kub 2021-04-02 21:54:54 +02:00
parent 2dbaa49a1a
commit bac4eb5136
1 changed files with 52 additions and 17 deletions
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69
pico/32x/draw_arm.S
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@ -101,10 +101,46 @@
mov r6, #320 mov r6, #320
add r5, r1, r12, lsl #1 @ p32x = dram + dram[l] add r5, r1, r12, lsl #1 @ p32x = dram + dram[l]
ldrh r7, [r5], #2
2: @ loop_inner: 2: @ loop_inner:
ldrh r8, [r5], #2 mov r8, r7
subs lr, r6, #1 subs lr, r6, #1
blt 0b @ loop_outer blt 0b @ loop_outer
beq 7f @ single_pix
ldrh r7, [r5], #2 @ 32x pixel
cmp r7, r8 @ do RLE only if we have at least 2 px
@ ldreqh r7, [r5]
@ cmpeq r7, r8
subeq lr, lr, #1
beq 3f @ loop_innermost
7: @ single_pix:
mov r6, lr
eor r12,r8, r10
tst r12, #0x8000 @ !((t ^ inv) & 0x8000)
addeq r11,r11,#1
beq 8f @ single_pix_32x
ldrb r12,[r11], #1 @ MD pixel
cmp r3, r12,lsl #26 @ MD has bg pixel?
.if \do_md
movne r12,r12,lsl #1
ldrneh r12,[r9, r12]
strneh r12,[r0], #2 @ *dst++ = palmd[*pmd]
.else
addne r0, r0, #2
.endif
bne 2b @ loop_inner
8: @ single_pix_32x:
and r12,r8, #0x03e0
mov r8, r8, lsl #11
orr r8, r8, r8, lsr #(10+11)
orr r8, r8, r12,lsl #1
bic r8, r8, #0x0020 @ kill prio bit
strh r8, [r0], #2
b 2b @ loop_inner
3: @ loop_innermost: 3: @ loop_innermost:
ldrh r7, [r5], #2 @ 32x pixel ldrh r7, [r5], #2 @ 32x pixel
@ -112,7 +148,6 @@
cmpge r7, r8 cmpge r7, r8
beq 3b @ loop_innermost beq 3b @ loop_innermost
sub r5, r5, #2
add lr, lr, #1 add lr, lr, #1
sub lr, r6, lr sub lr, r6, lr
sub r6, r6, lr sub r6, r6, lr
@ -121,10 +156,10 @@
tst r12, #0x8000 @ !((t ^ inv) & 0x8000) tst r12, #0x8000 @ !((t ^ inv) & 0x8000)
bne 5f @ draw_md bne 5f @ draw_md
and r7 ,r8, #0x03e0 and r12,r8, #0x03e0
mov r8, r8, lsl #11 mov r8, r8, lsl #11
orr r8, r8, r8, lsr #(10+11) orr r8, r8, r8, lsr #(10+11)
orr r8, r8, r7 ,lsl #1 orr r8, r8, r12,lsl #1
bic r8, r8, #0x0020 @ kill prio bit bic r8, r8, #0x0020 @ kill prio bit
add r11,r11,lr add r11,r11,lr
@ -148,35 +183,35 @@
5: @ draw_md: 5: @ draw_md:
subs lr, lr, #1 subs lr, lr, #1
ldrgeb r7, [r11], #1 @ MD pixel ldrgeb r12,[r11], #1 @ MD pixel
blt 2b @ loop_inner blt 2b @ loop_inner
cmp r3, r7, lsl #26 @ MD has bg pixel? cmp r3, r12,lsl #26 @ MD has bg pixel?
.if \do_md .if \do_md
mov r7, r7, lsl #1 mov r12,r12,lsl #1
ldrneh r7 ,[r9, r7] ldrneh r12,[r9, r12]
strneh r7 ,[r0], #2 @ *dst++ = palmd[*pmd] strneh r12,[r0], #2 @ *dst++ = palmd[*pmd]
.else .else
addne r0, r0, #2 addne r0, r0, #2
.endif .endif
bne 5b @ draw_md bne 5b @ draw_md
and r7 ,r8, #0x03e0 and r12,r8, #0x03e0
mov r8, r8, lsl #11 mov r8, r8, lsl #11
orr r8, r8, r8, lsr #(10+11) orr r8, r8, r8, lsr #(10+11)
orr r8, r8, r7 ,lsl #1 orr r8, r8, r12,lsl #1
bic r8, r8, #0x0020 @ kill prio bit bic r8, r8, #0x0020 @ kill prio bit
strh r8, [r0], #2 @ *dst++ = bgr2rgb(*p32x++) strh r8, [r0], #2 @ *dst++ = bgr2rgb(*p32x++)
6: @ draw_md_32x: 6: @ draw_md_32x:
subs lr, lr, #1 subs lr, lr, #1
ldrgeb r7, [r11], #1 @ MD pixel ldrgeb r12,[r11], #1 @ MD pixel
blt 2b @ loop_inner blt 2b @ loop_inner
cmp r3, r7, lsl #26 @ MD has bg pixel? cmp r3, r12,lsl #26 @ MD has bg pixel?
.if \do_md .if \do_md
mov r7, r7, lsl #1 mov r12,r12,lsl #1
ldrneh r7 ,[r9, r7] @ *dst++ = palmd[*pmd] ldrneh r12,[r9, r12] @ *dst++ = palmd[*pmd]
moveq r7 ,r8 @ *dst++ = bgr2rgb(*p32x++) moveq r12,r8 @ *dst++ = bgr2rgb(*p32x++)
strh r7 ,[r0], #2 strh r12,[r0], #2
.else .else
streqh r8, [r0] @ *dst++ = bgr2rgb(*p32x++) streqh r8, [r0] @ *dst++ = bgr2rgb(*p32x++)
add r0, r0, #2 add r0, r0, #2