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Optimization in putchr

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This commit is contained in:
neauoire 2021-07-31 21:29:40 -07:00
parent 8a8de7f142
commit f3b237f0f9
1 changed files with 6 additions and 5 deletions
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11
src/devices/ppu.c
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@ -35,7 +35,7 @@ puticn(Ppu *p, Uint8 layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint
for(v = 0; v < 8; v++)
for(h = 0; h < 8; h++) {
Uint8 ch1 = (sprite[v] >> (7 - h)) & 0x1;
if(ch1 == 1 || (color != 0x05 && color != 0x0a && color != 0x0f))
if(ch1 || (color != 0x05 && color != 0x0a && color != 0x0f))
putpixel(p,
layer,
x + (flipx ? 7 - h : h),
@ -50,14 +50,15 @@ putchr(Ppu *p, Uint8 layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint
Uint16 v, h;
for(v = 0; v < 8; v++)
for(h = 0; h < 8; h++) {
Uint8 ch1 = ((sprite[v] >> (7 - h)) & 0x1) * color;
Uint8 ch2 = ((sprite[v + 8] >> (7 - h)) & 0x1) * color;
if(ch1 + ch2 || (color != 0x05 && color != 0x0a && color != 0x0f))
Uint8 ch1 = ((sprite[v] >> (7 - h)) & 0x1);
Uint8 ch2 = ((sprite[v + 8] >> (7 - h)) & 0x1);
Uint8 id = ch1 + ch2 * 2;
if(id || color > 0x7)
putpixel(p,
layer,
x + (flipx ? 7 - h : h),
y + (flipy ? 7 - v : v),
((ch1 ? (color & 0x3) : (color >> 0x2)) + (ch2 ? (color & 0x3) : (color >> 0x2)) * 2) & 0x3);
(id < 2 ? id : color / 2 + id * (color % 8)) & 0x3);
}
}