mirror of https://github.com/nmlgc/ReC98.git
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
void scale_2x(dots32_t *dst32, sdots16_t src16)
|
|
{
|
|
dots32_t mask = 1;
|
|
dots32_t srcex = 0;
|
|
dots32_t dst_local;
|
|
int i;
|
|
|
|
srcex = src16;
|
|
dst_local = 0;
|
|
*dst32 = 0;
|
|
for(i = 0; i < 16; i++) {
|
|
dst_local |= _lrotl(srcex & mask, ((i * 2) + 0) - i);
|
|
dst_local |= _lrotl(srcex & mask, ((i * 2) + 1) - i);
|
|
mask = _lrotl(mask, 1);
|
|
}
|
|
mask = 0x00FF00FF; *dst32 |= _lrotl(dst_local & mask, 8);
|
|
mask = 0xFF00FF00; *dst32 |= _lrotr(dst_local & mask, 8);
|
|
}
|
|
|
|
void graph_slow_2xscale_rect_1_to_0(int x0, int y0, int x1, int y1, int w1, int h1)
|
|
{
|
|
int row_p1 = (x1 / 8) + (y1 * ROW_SIZE);
|
|
int row_p0 = (x0 / 8) + (y0 * ROW_SIZE);
|
|
int col16;
|
|
int row;
|
|
planar16_t px16;
|
|
dots16_t px16_nonzero;
|
|
|
|
for(row = 0; row < h1; row++) {
|
|
int p0 = row_p0;
|
|
int p1 = row_p1;
|
|
for(col16 = 0; col16 < w1 / 16; col16++) {
|
|
int scale_p;
|
|
graph_accesspage_func(1);
|
|
VRAM_SNAP_PLANAR(px16, p1, 16);
|
|
px16_nonzero = px16.B | px16.R | px16.G | px16.E;
|
|
for(scale_p = 0; scale_p < ROW_SIZE * 2; scale_p += ROW_SIZE) {
|
|
dots32_t dst32;
|
|
dots32_t px32_nonzero;
|
|
|
|
graph_accesspage_func(0);
|
|
scale_2x(&px32_nonzero, px16_nonzero);
|
|
grcg_setcolor_rmw(0);
|
|
*(dots32_t*)(VRAM_PLANE_B + p0 + scale_p) = px32_nonzero;
|
|
grcg_off();
|
|
|
|
scale_2x(&dst32, px16.B);
|
|
*(dots32_t*)(VRAM_PLANE_B + p0 + scale_p) |= dst32;
|
|
|
|
scale_2x(&dst32, px16.R);
|
|
*(dots32_t*)(VRAM_PLANE_R + p0 + scale_p) |= dst32;
|
|
|
|
scale_2x(&dst32, px16.G);
|
|
*(dots32_t*)(VRAM_PLANE_G + p0 + scale_p) |= dst32;
|
|
|
|
scale_2x(&dst32, px16.E);
|
|
*(dots32_t*)(VRAM_PLANE_E + p0 + scale_p) |= dst32;
|
|
}
|
|
p1 += 2;
|
|
p0 += 4;
|
|
}
|
|
row_p0 += ROW_SIZE * 2;
|
|
row_p1 += ROW_SIZE;
|
|
}
|
|
}
|