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@@ -1647,8 +1647,14 @@ FinalizeLineRGB555:
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addeq r0, r0, #32*2
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.fl_no32colRGB555:
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-.fl_loopRGB555:
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+.if UNALIGNED_DRAWLINEDEST
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+ @ this is basically for Gizmondo, which has unaligned odd lines in the framebuffer
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+ tst r0, #2
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+ bne .fl_RGB555u
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+.endif
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+
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+.fl_loopRGB555:
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ldr r12, [r1], #4
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ldr r7, [r1], #4
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@@ -1670,12 +1676,12 @@ FinalizeLineRGB555:
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ldrh r6, [r3, r6]
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and r12,lr, r7, lsr #15
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ldrh r12,[r3, r12]
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+ and r7, lr, r7, lsr #23
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+ ldrh r7, [r3, r7]
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orr r8, r8, r6, lsl #16
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- and r6, lr, r7, lsr #23
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- ldrh r6, [r3, r6] @ 1 cycle interlock here (r6)
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subs r2, r2, #1
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- orr r12,r12, r6, lsl #16
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+ orr r12,r12, r7, lsl #16
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stmia r0!, {r4,r5,r8,r12}
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bne .fl_loopRGB555
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@@ -1689,6 +1695,11 @@ FinalizeLineRGB555:
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mov r9, #0x3900 @ f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
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orr r9, r9, #0x00e7
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+.if UNALIGNED_DRAWLINEDEST
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+ tst r0, #2
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+ bne .fl_32scale_RGB555u
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+.endif
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+
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.fl_loop32scale_RGB555:
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ldr r12, [r1], #4
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ldr r7, [r1], #4
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@@ -1745,6 +1756,132 @@ FinalizeLineRGB555:
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ldmfd sp!, {r4-r8,lr}
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bx lr
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+.if UNALIGNED_DRAWLINEDEST
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+ @ unaligned versions of loops
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+
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+.fl_RGB555u:
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+ ldr r12, [r1], #4
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+ ldr r7, [r1], #4
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+
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+ and r4, lr, r12, lsl #1
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+ ldrh r4, [r3, r4]
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+ and r5, lr, r12, lsr #7
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+ ldrh r5, [r3, r5]
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+ strh r4, [r0], #2
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+ b .fl_loopRGB555u_enter
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+
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+.fl_loopRGB555u:
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+ ldr r12, [r1], #4
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+ ldr r7, [r1], #4
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+
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+ and r4, lr, r12, lsl #1
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+ ldrh r4, [r3, r4]
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+ and r5, lr, r12, lsr #7
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+ ldrh r5, [r3, r5]
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+
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+ orr r4, r8, r4, lsl #16
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+ str r4, [r0], #4
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+
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+.fl_loopRGB555u_enter:
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+ and r6, lr, r12, lsr #15
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+ ldrh r6, [r3, r6]
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+ and r8, lr, r12, lsr #23
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+ ldrh r8, [r3, r8]
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+ orr r4, r5, r6, lsl #16
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+
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+ and r5, lr, r7, lsl #1
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+ ldrh r5, [r3, r5]
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+ and r6, lr, r7, lsr #7
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+ ldrh r6, [r3, r6]
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+ orr r5, r8, r5, lsl #16
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+
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+ and r12,lr, r7, lsr #15
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+ ldrh r12,[r3, r12]
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+ and r8, lr, r7, lsr #23
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+ ldrh r8, [r3, r8]
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+ orr r6, r6, r12,lsl #16
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+
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+ subs r2, r2, #1
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+ stmia r0!, {r4,r5,r6}
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+ bne .fl_loopRGB555u
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+
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+ strh r8, [r0], #2
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+
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+ ldmfd sp!, {r4-r8,lr}
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+ bx lr
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+
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+
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+.fl_32scale_RGB555u:
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+
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+ @ r9 f800 07e0 001f | e000 0780 001c | 3800 01e0 0007
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+.fl_loop32scale_RGB555u:
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+ ldr r12, [r1], #4
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+ ldr r7, [r1], #4
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+
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+ and r4, lr, r12,lsl #1
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+ ldrh r4, [r3, r4]
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+ and r5, lr, r12,lsr #7
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+ ldrh r5, [r3, r5]
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+ and r4, r4, r9, lsl #2
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+@ orr r4, rx, r4, lsl #16
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+ str r4, [r0], #4 @ pix_d -1, 0
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+
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+.fl_loop32scale_RGB555u_enter:
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+ and r4, r9, r4, lsr #2 @ r4=1/4 pix_s 0
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+
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+ and r5, r5, r9, lsl #2
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+ sub r6, r5, r5, lsr #2 @ r6 = 3/4 pix_s 1
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+ add r4, r6, r4, lsr #2 @ r4=(1/4 pix_s 0) + (3/4 pix_s 1)
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+ orr r4, r4, r5, lsl #15
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+
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+ and r6, lr, r12,lsr #15
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+ ldrh r6, [r3, r6]
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+ and r12,lr, r12,lsr #23
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+ ldrh r12,[r3, r12]
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+ and r6, r6, r9, lsl #2
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+ add r4, r4, r6, lsl #15 @ pix_d 1, 2
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+
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+@@ TODO...
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+
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+ mov r5, r5, lsr #1
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+ sub r6, r6, r6, lsr #2 @ r6 = 3/4 pix_s 2
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+ orr r5, r5, r6, lsl #16
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+
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+ and r6, lr, r7, lsl #1
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+ ldrh r6, [r3, r6]
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+ and r12,r12,r9, lsl #2
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+ add r5, r5, r12,lsl #14 @ pix_d 2, 3
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+ and r6, r6, r9, lsl #2
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+ orr r6, r12,r6, lsl #16 @ pix_d 4, 5
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+
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+ and r12,lr, r7, lsr #7
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+ ldrh r12,[r3, r12]
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+ and r10,lr, r7, lsr #15
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+ ldrh r10,[r3, r10]
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+ and r12,r12,r9, lsl #2
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+ sub r8, r12,r12,lsr #2 @ r8 = 3/4 pix_s 1
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+ add r8, r8, r6, lsr #18
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+ and r7, lr, r7, lsr #23
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+ ldrh r7, [r3, r7]
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+ and r10,r10,r9, lsl #2
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+ orr r8, r8, r10,lsl #15
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+ add r8, r8, r12,lsl #15 @ pix_d 6, 7
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+ sub r10,r10,r10,lsr #2 @ r10= 3/4 pix_s 2
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+ and r7, r7, r9, lsl #2
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+ add r10,r10,r7, lsr #2 @ += 1/4 pix_s 3
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+ orr r10,r10,r7, lsl #16 @ pix_d 8, 9
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+
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+ subs r2, r2, #1
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+
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+ stmia r0!, {r4,r5,r6,r8,r10}
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+ bne .fl_loop32scale_RGB555u
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+
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+ ldmfd sp!, {r9,r10}
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+ ldmfd sp!, {r4-r8,lr}
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+ bx lr
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+
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+.endif @ UNALIGNED_DRAWLINEDEST
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+
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@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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