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ppu_redraw: use the same optimization that one-layer logic had

This commit is contained in:
Sigrid Solveig Haflínudóttir 2021-12-25 15:57:43 +01:00
parent c2829ce5fe
commit 831014e811
1 changed files with 4 additions and 2 deletions
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6
src/devices/ppu.c
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@ -82,9 +82,11 @@ ppu_clear(Ppu *p, Layer *layer)
void
ppu_redraw(Ppu *p, Uint32 *screen)
{
Uint32 i, size = p->width * p->height;
Uint32 i, size = p->width * p->height, palette[16];
for(i = 0; i < 16; ++i)
palette[i] = p->palette[(i >> 2) ? (i >> 2) : (i & 3)];
for(i = 0; i < size; ++i)
screen[i] = p->palette[p->fg.pixels[i] ? p->fg.pixels[i] : p->bg.pixels[i]];
screen[i] = palette[p->fg.pixels[i] << 2 | p->bg.pixels[i]];
p->fg.changed = p->bg.changed = 0;
}