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bugfix for ARM asm sprite rendering

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This commit is contained in:
kub 2020-02-26 20:31:40 +01:00
parent 3c6da92ba0
commit 672b29e658
2 changed files with 4 additions and 4 deletions
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2
pico/draw.c
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@ -1243,7 +1243,7 @@ static void DrawAllSprites(unsigned char *sprited, int prio, int sh,
struct PicoEState *est)
{
unsigned char *p;
int cnt, w = sprited[2];
int cnt, w;
cnt = sprited[0] & 0x7f;
if (cnt == 0) return;

6
pico/draw_arm.S
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@ -1169,7 +1169,9 @@ DrawSprite:
mov r2, r0, lsl #24
cmp r0, #0xff
ldmeqfd sp!, {r1,r3-r11,pc} @ end of list
eor r2, r2, r4, lsl #30
eors r2, r2, r4, lsl #30
bic r2, r4, #0xff000000
str r2, [sp]
bmi DrawSprite @ wrong priority
ldr r1, [r7, #OFS_EST_HighPreSpr]
and r0, r0, #0x7f
@ -1210,8 +1212,6 @@ DrawSprite:
add r6, r6, #1 @ inc now
cmp r4, #0x1000000 @ check width of last sprite
movhs r6, r4, lsr #24
bichs r4, r4, #0xff000000
strhs r4, [sp]
@ cache some stuff to avoid mem access
mov r5, r5, lsl #4 @ delta<<=4; // Delta of address