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deco16ic - Improve speed of row/column scroll calculation substantially.

This commit is contained in:
iq_132 2014-09-15 10:18:54 +00:00
parent a5b3ef7f60
commit dc88aa7c13
2 changed files with 31 additions and 40 deletions
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4
src/burn/drv/dataeast/d_cninja.cpp
View File

@ -2126,8 +2126,8 @@ static INT32 Robocop2StartDraw()
static INT32 Robocop2DrawScanline(INT32 line)
{
if ((line & 0xf)==0) deco16_pf12_update(); // every 16 lines-speedup
deco16_pf34_update(); // only update the road's pf per scanline
deco16_pf12_update();
deco16_pf34_update();
INT32 layer_8bpp = 0;

67
src/burn/drv/dataeast/deco16ic.cpp
View File

@ -1,8 +1,6 @@
/*
TO DO!
// column scroll needs improved does 'size' (16/8) sized columns rather than 1pxl
// this affects boogie wings
// why is mutant fight's scrolling off in title?
1 Double Wings MBE 102 52 141 104
@ -29,6 +27,9 @@ static INT32 deco16_pf_gfx_bank[4]; // (1/2) 8x8, 16x16, (2/3) 8x8, 16x16
static UINT16 deco16_scroll_x[4][ 512]; // 512
static UINT16 deco16_scroll_y[4][1024]; // 1024
static INT32 deco16_scroll_rows[4];
static INT32 deco16_scroll_cols[4];
static INT32 deco16_enable_rowscroll[4];
static INT32 deco16_enable_colscroll[4];
@ -116,8 +117,8 @@ static inline UINT32 alpha_blend(UINT32 d, UINT32 s, UINT32 p)
{
INT32 a = 256 - p;
return (((((s & 0xff00ff) * p) + ((d & 0xff00ff) * a)) & 0xff00ff00) |
((((s & 0x00ff00) * p) + ((d & 0x00ff00) * a)) & 0x00ff0000)) >> 8;
return (((((s & 0xff00ff) * p) + ((d & 0xff00ff) * a)) & 0xff00ff00) +
((((s & 0x00ff00) * p) + ((d & 0x00ff00) * a)) & 0x00ff0000)) / 256;
}
void deco16_draw_alphaprio_sprite(UINT32 *palette, UINT8 *gfx, INT32 code, INT32 color, INT32 sx, INT32 sy, INT32 flipx, INT32 flipy, INT32 pri, INT32 spri, INT32 alpha)
@ -226,8 +227,6 @@ void deco16_sprite_decode(UINT8 *gfx, INT32 len)
BurnFree (tmp);
}
#define BIT(x,n) (((x)>>(n))&1)
void deco16_draw_layer_by_line(INT32 draw_start, INT32 draw_end, INT32 tmap, UINT16 *dest, INT32 flags)
{
INT32 size = deco16_layer_size_select[tmap];
@ -253,7 +252,7 @@ void deco16_draw_layer_by_line(INT32 draw_start, INT32 draw_end, INT32 tmap, UIN
UINT16 *vram = (UINT16 *)deco16_pf_ram[tmap];
UINT8 *tmask = transmask[tmap][(flags & 0x00100) >> 8];
UINT8 t_mask = (flags & 0x10000) ? 0 : ~0;
UINT8 t_mask = (flags & 0x10000) ? 0 : 1; // enable using transparent pixels
INT32 priority = flags & 0x000ff;
@ -268,16 +267,11 @@ void deco16_draw_layer_by_line(INT32 draw_start, INT32 draw_end, INT32 tmap, UIN
for (INT32 y = draw_start; y < draw_end; y++)
{
INT32 xoff = deco16_scroll_x[tmap][y] & wmask;
INT32 xoff = deco16_scroll_x[tmap][((y-deco16_global_y_offset)&0x1ff)/deco16_scroll_rows[tmap]] & wmask;
for (INT32 x = 0; x < nScreenWidth + size; x+=size)
{
INT32 yoff;
if (BIT(control, 5))
yoff = deco16_scroll_y[tmap][(x + deco16_scroll_x[tmap][y]) & wmask] & hmask;
else
yoff = deco16_scroll_y[tmap][x & wmask] & hmask;
INT32 yoff = deco16_scroll_y[tmap][((x + xoff) & wmask)/deco16_scroll_cols[tmap]] & hmask;
INT32 yy = (y + yoff) & hmask;
INT32 xx = (x + xoff) & wmask;
@ -324,7 +318,7 @@ void deco16_draw_layer_by_line(INT32 draw_start, INT32 draw_end, INT32 tmap, UIN
INT32 pxl = src[xxx^flipx];
if (tmask[pxl] & t_mask) continue;
if (tmask[pxl] && t_mask) continue;
dest[y * nScreenWidth + xxx + sx] = pxl | color;
deco16_prio_map[y * 512 + xxx + sx] = priority;
@ -553,12 +547,12 @@ static void pf_update(INT32 tmap, INT32 scrollx, INT32 scrolly, UINT16 *rowscrol
}
}
if (deco16_layer_size_select[tmap] == -1) return; // don't bother
deco16_enable_rowscroll[tmap] = 0;
deco16_enable_colscroll[tmap] = 0;
if (rowscroll == NULL) return;
if ((control1 & 0x40) == 0x40) // row scroll
if ((control1 & 0x40) == 0x40 && rowscroll != NULL) // row scroll
{
INT32 size = deco16_layer_size_select[tmap] ? 16 : 8;
@ -574,26 +568,25 @@ static void pf_update(INT32 tmap, INT32 scrollx, INT32 scrolly, UINT16 *rowscrol
if (rows == 0) rows = 1;
}
if (rows != 1) deco16_enable_rowscroll[tmap] = 1;
if (rows != 1) deco16_enable_colscroll[tmap] = 1;
INT32 rsize = rownum / rows;
deco16_scroll_rows[tmap] = rsize;
INT32 xscroll = scrollx + deco16_global_x_offset + deco16_scroll_offset[tmap][size/16][0];
for (INT32 r = 0; r < rows; r++) {
for (INT32 p = rsize * r; p < (rsize * r) + rsize; p++) {
deco16_scroll_x[tmap][(p - deco16_global_y_offset) & 0x1ff] = xscroll + BURN_ENDIAN_SWAP_INT16(rowscroll[r]);
}
deco16_scroll_x[tmap][r & 0x1ff] = xscroll + BURN_ENDIAN_SWAP_INT16(rowscroll[r]);
}
if (~control1 & 0x20) {
for (INT32 r = 0; r < 1024; r++) {
deco16_scroll_y[tmap][r] = scrolly + deco16_global_y_offset;
}
deco16_scroll_cols[tmap] = 0x8000;
deco16_scroll_y[tmap][0] = (scrolly + deco16_global_y_offset) & 0x1ff;
}
}
if ((control1 & 0x20) == 0x20) // column scroll
if ((control1 & 0x20) == 0x20 && rowscroll != NULL) // column scroll
{
INT32 size = deco16_layer_size_select[tmap] ? 16 : 8;
@ -614,18 +607,17 @@ static void pf_update(INT32 tmap, INT32 scrollx, INT32 scrolly, UINT16 *rowscrol
INT32 rsize = colnum / cols;
deco16_scroll_cols[tmap] = rsize;
for (INT32 r = 0; r < cols; r++) {
for (INT32 p = rsize * r; p < (rsize * r) + rsize; p++) {
deco16_scroll_y[tmap][p] = scrolly + BURN_ENDIAN_SWAP_INT16(rowscroll[(r & mask) + 0x200]) + deco16_global_y_offset;
}
deco16_scroll_y[tmap][r] = (scrolly + BURN_ENDIAN_SWAP_INT16(rowscroll[(r & mask) + 0x200]) + deco16_global_y_offset) & 0x1ff;
}
if (~control1 & 0x40) {
INT32 xscroll = scrollx + deco16_global_x_offset + deco16_scroll_offset[tmap][size/16][0];
for (INT32 r = 0; r < 512; r++) {
deco16_scroll_x[tmap][(r - deco16_global_y_offset) & 0x1ff] = xscroll;
}
deco16_scroll_rows[tmap] = 0x8000;
deco16_scroll_x[tmap][0] = xscroll;
}
}
@ -633,15 +625,14 @@ static void pf_update(INT32 tmap, INT32 scrollx, INT32 scrolly, UINT16 *rowscrol
{
INT32 size = deco16_layer_size_select[tmap] ? 16 : 8;
for (INT32 r = 0; r < 1024; r++) {
deco16_scroll_y[tmap][r] = scrolly + deco16_global_y_offset;
}
deco16_scroll_rows[tmap] = 0x8000;
deco16_scroll_cols[tmap] = 0x8000;
deco16_scroll_y[tmap][0] = (scrolly + deco16_global_y_offset) & 0x1ff;
INT32 xscroll = scrollx + deco16_global_x_offset + deco16_scroll_offset[tmap][size/16][0];
for (INT32 r = 0; r < 512; r++) {
deco16_scroll_x[tmap][(r - deco16_global_y_offset) & 0x1ff] = xscroll;
}
deco16_scroll_x[tmap][0] = xscroll;
}
}