diff options
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/platform/ds/arm9/source/blitters_arm.s | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/backends/platform/ds/arm9/source/blitters_arm.s b/backends/platform/ds/arm9/source/blitters_arm.s index 9a9cd4cb73..768724a187 100644 --- a/backends/platform/ds/arm9/source/blitters_arm.s +++ b/backends/platform/ds/arm9/source/blitters_arm.s @@ -280,13 +280,52 @@ palLoop: MOV r5,#200 @ r5 = y yLoop4: - MOV r4,#64 @ r4 = x + MOV r4,#32 @ r4 = x xLoop4: - LDRB r9, [r1],#1 @ r9 = src0 - LDRB r10,[r1],#1 @ r10= src1 - LDRB r11,[r1],#1 @ r11= src2 - LDRB r12,[r1],#1 @ r12= src3 - LDRB r14,[r1],#1 @ r14= src4 + LDRH r9, [r1],#2 + MOV r10, r9, LSR #8 + AND r9, r9, #0xFF + LDRH r11,[r1],#2 + MOV r12, r11, LSR #8 + AND r11, r11, #0xFF + LDRB r14,[r1],#1 + + LDR r9, [r13,r9, LSL #2] @ r9 = pal[src0] + LDR r10,[r13,r10,LSL #2] @ r10= pal[src1] + LDR r11,[r13,r11,LSL #2] @ r11= pal[src2] + LDR r12,[r13,r12,LSL #2] @ r12= pal[src3] + LDR r14,[r13,r14,LSL #2] @ r13= pal[src4] + + ADD r9, r9, r9, LSL #1 @ r9 = 3*src0 + ADD r9, r9, r10 @ r9 = dst0<<2 + ADD r10,r10,r11 @ r10= dst1 + ADD r11,r11,r12 @ r11= dst2 + ADD r12,r12,r14 @ r12= src3 + src4 + ADD r12,r12,r14,LSL #1 @ r12= src3 + src4*3 = dst3<<2 + + AND r9, r8, r9, LSR #2 @ r9 = dst0 (split) + AND r10,r8, r10,LSR #1 @ r10= dst1 (split) + AND r11,r8, r11,LSR #1 @ r11= dst2 (split) + AND r12,r8, r12,LSR #2 @ r12= dst3 (split) + + ORR r9, r9, r9, ROR #16 @ r9 = dst0 + ORR r10,r10,r10,ROR #16 @ r10= dst1 + ORR r11,r11,r11,ROR #16 @ r11= dst2 + ORR r12,r12,r12,ROR #16 @ r12= dst3 + + MOV r10,r10,LSL #16 + ORR r9, r10,r9, LSR #16 + MOV r12,r12,LSL #16 + ORR r11,r12,r11,LSR #16 + STMIA r0!,{r9,r11} + + LDRB r9, [r1],#1 + LDRH r10,[r1],#2 + MOV r11, r10, LSR #8 + AND r10, r10, #0xFF + LDRH r12,[r1],#2 + MOV r14, r12, LSR #8 + AND r12, r12, #0xFF LDR r9, [r13,r9, LSL #2] @ r9 = pal[src0] LDR r10,[r13,r10,LSL #2] @ r10= pal[src1] |