1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
|
// license:BSD-3-Clause
// copyright-holders:Luca Elia
/*
TAXAN KY-3211 and KY-10510 Sprite generator
These chips are sprite generator, with ROZ capability.
Tile size: 16x16, 4bpp or 8bpp, Can be composed to
32 tiles for both horizontal and vertical independently.
Later revision, KY-10510 has extended color and slightly
different sprite RAM format.
used at:
- sigma/sigmab98.cpp
- sigma/sammymdl.cpp
TODO:
- Verify vregs usage other than background color,
and vtable usage
-- Original docs from sigma/sigmab98.cpp:
Sprites (Older chip: TAXAN KY-3211. Newer chip: KY-10510)
Offset: Bits: Value:
0 7654 ---- Color (High, newer chip only?)
---- 3210 Color
1 7--- ----
-6-- ---- 256 Color Sprite (older chip)
--5- ----
---4 ---- Flip X (older chip)
---- 3--- Flip Y (older chip) / 256 Color Sprite (newer chip)
---- -2-- Draw Sprite
---- --10 Priority (0 = Front .. 3 = Back)
2 Tile Code (High)
3 Tile Code (Low)
4 7654 3--- Number of X Tiles - 1
---- -2-- Flip X (newer chip)
---- --10 X (High)
5 X (Low)
6 7654 3--- Number of Y Tiles - 1
---- -2-- Flip Y (newer chip)
---- --10 Y (High)
7 Y (Low)
8 Destination Delta X, Scaled by Shrink Factor << 8 (High)
9 Destination Delta X, Scaled by Shrink Factor << 8 (Low)
a Destination Delta Y, Scaled by Shrink Factor << 8 (High)
b Destination Delta Y, Scaled by Shrink Factor << 8 (Low)
c 7654 3---
---- -210 Source X (High)
d Source X (Low)
e 7654 3---
---- -210 Source Y (High)
f Source Y (Low)
Sprites rotation examples:
logo in dashhero, pepsiman https://youtu.be/p3cbZ67m4lo?t=1m24s, tdoboon https://youtu.be/loPP3jt0Ob0
Video Regs
Offset: Bits: Value:
01 Screen Width / 2 - 1
03
05
07
09 Screen Height - 1
0b
0d
0f
11
13 76-- ----
--5- ---- VBlank?
---4 3---
---- -2-- Sprites Buffered?
---- --10
15
17
19
1b Background Color (Low)
1d Background Color (High)
1f
21
*/
#include "emu.h"
#include "ky3211_ky10510.h"
#include "multibyte.h"
#include "screen.h"
constexpr int integer_part(int x)
{
//return x >> 16;
return (x + 0x8000) >> 16;
}
GFXDECODE_START( ky3211_device::gfx_ky3211 )
GFXDECODE_DEVICE(DEVICE_SELF, 0, gfx_16x16x4_packed_lsb, 0, 0x100/16 )
GFXDECODE_DEVICE(DEVICE_SELF, 0, gfx_16x16x8_raw, 0, 0x100/256 )
GFXDECODE_END
// Larger palette
GFXDECODE_START( ky10510_device::gfx_ky10510 )
GFXDECODE_DEVICE(DEVICE_SELF, 0, gfx_16x16x4_packed_lsb, 0, 0x1000/16 )
GFXDECODE_DEVICE(DEVICE_SELF, 0, gfx_16x16x8_raw, 0, 0x1000/16 )
GFXDECODE_END
DEFINE_DEVICE_TYPE(KY3211, ky3211_device, "ky3211", "TAXAN KY-3211 Sprites")
DEFINE_DEVICE_TYPE(KY10510, ky10510_device, "ky10510", "TAXAN KY-10510 Sprites")
ky3211_device::ky3211_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, type, tag, owner, clock)
, device_gfx_interface(mconfig, *this)
, m_vregs(*this, "vregs", 0x22, ENDIANNESS_LITTLE)
, m_vtable(*this, "vtable", 0x80, ENDIANNESS_LITTLE)
, m_sprite_bitmap(512, 512)
{
}
ky3211_device::ky3211_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: ky3211_device(mconfig, KY3211, tag, owner, clock)
{
}
ky10510_device::ky10510_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: ky3211_device(mconfig, KY10510, tag, owner, clock)
{
}
void ky3211_device::save_states()
{
save_item(NAME(m_sprite_bitmap));
}
void ky3211_device::device_start()
{
decode_gfx(gfx_ky3211);
save_states();
}
void ky10510_device::device_start()
{
decode_gfx(gfx_ky10510);
gfx(1)->set_granularity(16);
save_states();
}
bool ky3211_device::get_attr(const u8 *src, u32 &color, u8 &gfx, bool &flipx, bool &flipy)
{
if (BIT(~src[0x01], 2))
return false;
color = src[0x00] & 0xf;
gfx = BIT(src[0x01], 6);
flipx = BIT(src[0x01], 4);
flipy = BIT(src[0x01], 3);
return true;
}
bool ky10510_device::get_attr(const u8 *src, u32 &color, u8 &gfx, bool &flipx, bool &flipy)
{
if ((src[0x01] & 0x0c) == 0)
return false;
color = src[0x00] & 0xff;
gfx = BIT(src[0x01], 3);
flipx = BIT(src[0x04], 2);
flipy = BIT(src[0x06], 2);
return true;
}
void ky3211_device::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect, const u8 *spriteram, int pri_mask)
{
const u8 *end = spriteram - 0x10;
const u8 *src = end + 0x1000;
for (; src != end; src -= 0x10)
{
u32 color;
u8 gfx;
bool flipx, flipy;
if (!get_attr(src, color, gfx, flipx, flipy))
continue;
if (((1 << (src[0x01] & 0x03)) & pri_mask) == 0)
continue;
int code = get_u16be(&src[0x02]);
const int nx = ((src[0x04] & 0xf8) >> 3) + 1;
int dstx = get_u16be(&src[0x04]) & 0x3ff;
const int ny = ((src[0x06] & 0xf8) >> 3) + 1;
int dsty = get_u16be(&src[0x06]) & 0x3ff;
int dstdx = get_u16be(&src[0x08]); // 0x100 = no zoom, 0x200 = 50% zoom
int dstdy = get_u16be(&src[0x0a]); // ""
int srcx = get_u16be(&src[0x0c]);
int srcy = get_u16be(&src[0x0e]);
// Sign extend the position
dstx = util::sext(dstx, 10); // or 11?
dsty = util::sext(dsty, 10);
// Flipping
int x0, x1, dx;
int y0, y1, dy;
if (flipx) { x0 = nx - 1; x1 = -1; dx = -1; }
else { x0 = 0; x1 = nx; dx = +1; }
if (flipy) { y0 = ny - 1; y1 = -1; dy = -1; }
else { y0 = 0; y1 = ny; dy = +1; }
// Draw the sprite directly to screen if no zoom/rotation/offset is required
if (dstdx == 0x100 && !dstdy && !srcx && !srcy)
{
for (int y = y0; y != y1; y += dy)
{
for (int x = x0; x != x1; x += dx)
{
this->gfx(gfx)->transpen(bitmap, cliprect,
code++, color,
flipx, flipy,
dstx + x * 16, dsty + y * 16, 0);
}
}
continue;
}
// First draw the sprite in a buffer without zoom/rotation/offset, nor transparency
rectangle sprite_cliprect(0, nx * 16 - 1, 0, ny * 16 - 1);
for (int y = y0; y != y1; y += dy)
{
for (int x = x0; x != x1; x += dx)
{
this->gfx(gfx)->opaque(m_sprite_bitmap, sprite_cliprect,
code++, color,
flipx, flipy,
x * 16, y * 16);
}
}
// Sign extend the transformation values
dstdx = util::sext(dstdx, 16);
dstdy = util::sext(dstdy, 16);
srcx = util::sext(srcx, 16);
srcy = util::sext(srcy, 16);
dstdy = -dstdy;
// Use fixed point values (16.16), for accuracy
dstx <<= 16;
dsty <<= 16;
// Source delta (equal for x and y)
int z = int(sqrt(dstdx * dstdx + dstdy * dstdy) + 0.5); // dest delta vector is scaled by the source delta!?
if (!z)
z = 0x100;
int srcdzz = z << 8;
// Destination x and y deltas
int dstdxx = (dstdx << 16) / z; // dest x delta for source x increments
int dstdyx = (dstdy << 16) / z; // dest y delta for source x increments
int dstdxy = -dstdyx; // dest x delta for source y increments (orthogonal to the above vector)
int dstdyy = dstdxx; // dest y delta for source y increments
// Transform the source offset in a destination offset (negate, scale and rotate it)
srcx = (-srcx << 8) / z;
srcy = (-srcy << 8) / z;
dstx += srcx * dstdxx;
dsty += srcx * dstdyx;
dstx += srcy * dstdxy;
dsty += srcy * dstdyy;
// Supersampling (2x2) to avoid gaps in the destination
srcdzz /= 2;
dstdxx /= 2;
dstdyx /= 2;
dstdxy /= 2;
dstdyy /= 2;
// Transform the source image while drawing to the screen
u16 const *const src = &m_sprite_bitmap.pix(0);
u16 *const dst = &bitmap.pix(0);
const int src_rowpixels = m_sprite_bitmap.rowpixels();
const int dst_rowpixels = bitmap.rowpixels();
const u16 penmask = gfx ? 0xff : 0x0f;
// Scan source image top to bottom
srcy = 0;
for (;;)
{
const int dstx_prev = dstx;
const int dsty_prev = dsty;
const int fy = integer_part(srcy);
if (fy > sprite_cliprect.max_y)
break;
if (fy >= sprite_cliprect.min_y)
{
// left to right
srcx = 0;
for (;;)
{
int fx = integer_part(srcx);
if (fx > sprite_cliprect.max_x)
break;
if (fx >= sprite_cliprect.min_x)
{
const int px = integer_part(dstx);
const int py = integer_part(dsty);
if (px >= cliprect.min_x && px <= cliprect.max_x && py >= cliprect.min_y && py <= cliprect.max_y)
{
const u16 pen = src[fy * src_rowpixels + fx];
if (pen & penmask)
dst[py * dst_rowpixels + px] = pen;
}
}
// increment source x and dest x,y
srcx += srcdzz;
dstx += dstdxx;
dsty += dstdyx;
}
}
// increment source y and dest x,y
srcy += srcdzz;
dstx = dstx_prev;
dsty = dsty_prev;
dstx += dstdxy;
dsty += dstdyy;
}
}
}
void ky3211_device::vregs_w(offs_t offset, u8 data)
{
m_vregs[offset] = data;
switch (offset)
{
case 0x1b: // background color
case 0x1d:
{
const int x = (m_vregs[0x1d] << 8) + m_vregs[0x1b];
const int r = (x >> 10) & 0x1f;
const int g = (x >> 5) & 0x1f;
const int b = (x >> 0) & 0x1f;
palette().set_pen_color(0x1000, pal5bit(r), pal5bit(g), pal5bit(b));
break;
}
// default:
// logerror("%s: unknown video reg written: %02x = %02x\n", machine().describe_context(), offset, data);
}
}
u8 ky3211_device::vregs_r(offs_t offset)
{
switch (offset)
{
default:
if (!machine().side_effects_disabled())
logerror("%s: unknown video reg read: %02x\n", machine().describe_context(), offset);
return m_vregs[offset];
}
}
void ky3211_device::vtable_w(offs_t offset, u8 data)
{
m_vtable[offset] = data;
}
u8 ky3211_device::vtable_r(offs_t offset)
{
return m_vtable[offset];
}
|