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iAudio M3: Optimised LCD driver, with more/better assembly code. Speedup is ~80% when boosted, ~15% when unboosted. Also implemented grey phase blitting. * Adapted the greyscale library, and the plugins using it. * Fixed a bug in greyscale scroll down for vertically packed pixels.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16809 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2008-03-25 23:21:36 +00:00
parent 6ceaf321f3
commit 40919d7db2
20 changed files with 744 additions and 315 deletions
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27
apps/plugins/lib/grey_coldfire.S
View file

@ -31,7 +31,14 @@
.global _grey_line1
.type _grey_line1, @function
#if (LCD_PIXELFORMAT == VERTICAL_PACKING) && (LCD_DEPTH == 2)
#if (LCD_PIXELFORMAT == VERTICAL_PACKING) \
|| (LCD_PIXELFORMAT == VERTICAL_INTERLEAVED)
#if (LCD_DEPTH == 1) || (LCD_PIXELFORMAT == VERTICAL_INTERLEAVED)
#define GREY_BSIZE 8
#elif LCD_DEPTH == 2
#define GREY_BSIZE 4
#endif
/****************************************************************************
* void _grey_line1(int width,
@ -52,7 +59,7 @@ _grey_line1:
move.b (%a1)+, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
subq.l #1, %d2
.p1_h_end:
@ -66,10 +73,10 @@ _grey_line1:
move.w %d1, %d0
lsr.l #8, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
move.b %d1, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
subq.l #2, %d2
.p2_h_end:
@ -82,18 +89,18 @@ _grey_line1:
move.w %d1, %d0
lsr.l #8, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
move.b %d1, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
swap %d1
move.w %d1, %d0
lsr.l #8, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
move.b %d1, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
subq.l #4, %d2
bhs.s .p4_loop
@ -107,10 +114,10 @@ _grey_line1:
move.w %d1, %d0
lsr.l #8, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
move.b %d1, %d0
move.b (%d0.l, %a2), (%a0)
addq.l #4, %a0
addq.l #GREY_BSIZE, %a0
.p2_t_end:
btst.l #0, %d2