~rabbits/uxn

8a8de7f1424a66e7725490cdf8a06b836c94b90f — neauoire a month ago b327719
Simpler putchr(), not the best but..
1 files changed, 9 insertions(+), 14 deletions(-)

M src/devices/ppu.c
M src/devices/ppu.c => src/devices/ppu.c +9 -14
@@ 16,9 16,8 @@ void
clear(Ppu *p)
{
	int i, sz = p->height * p->width;
	for(i = 0; i < sz; ++i) {
		p->pixels[i] = 0;
	}
	for(i = 0; i < sz; ++i)
		p->pixels[i] = 0x00;
}

void


@@ 41,28 40,24 @@ puticn(Ppu *p, Uint8 layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint
					layer,
					x + (flipx ? 7 - h : h),
					y + (flipy ? 7 - v : v),
					ch1 ? color % 4 : color / 4);
					ch1 ? (color & 0x3) : (color >> 0x2));
		}
}

void
putchr(Ppu *p, Uint8 layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint8 flipx, Uint8 flipy)
{
	Uint8 k1 = 1, k2 = 2;
	Uint16 v, h;
	if(!(color & 1)) {
		++color;
		k1 = 2, k2 = 1;
	}
	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;
			putpixel(p,
				layer,
				x + (flipx ? 7 - h : h),
				y + (flipy ? 7 - v : v),
				((ch1 * k1 + ch2 * k2) + color / 4) & 0x3);
			if(ch1 + ch2 || (color != 0x05 && color != 0x0a && color != 0x0f))
				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);
		}
}