OpenTTD: src/blitter/32bpp_anim.cpp Source File

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32bpp_anim.cpp
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1 /* $Id: 32bpp_anim.cpp 26970 2014-10-06 19:15:00Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #include "../stdafx.h"
13 #include "../video/video_driver.hpp"
14 #include "32bpp_anim.hpp"
15
16 #include "../table/sprites.h"
17
18 #include "../safeguards.h"
19
21 static FBlitter_32bppAnim iFBlitter_32bppAnim;
22
23 template <BlitterMode mode>
24 inline void Blitter_32bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
25 {
26 const SpriteData *src = (const SpriteData *)bp->sprite;
27
28 const Colour *src_px = (const Colour *)(src->data + src->offset[zoom][0]);
29 const uint16 *src_n = (const uint16 *)(src->data + src->offset[zoom][1]);
30
31 for (uint i = bp->skip_top; i != 0; i--) {
32 src_px = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
33 src_n = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
34 }
35
36 Colour *dst = (Colour *)bp->dst + bp->top * bp->pitch + bp->left;
37 uint16 *anim = this->anim_buf + ((uint32 *)bp->dst - (uint32 *)_screen.dst_ptr) + bp->top * this->anim_buf_width + bp->left;
38
39 const byte *remap = bp->remap; // store so we don't have to access it via bp everytime
40
41 for (int y = 0; y < bp->height; y++) {
42 Colour *dst_ln = dst + bp->pitch;
43 uint16 *anim_ln = anim + this->anim_buf_width;
44
45 const Colour *src_px_ln = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
46 src_px++;
47
48 const uint16 *src_n_ln = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
49 src_n += 2;
50
51 Colour *dst_end = dst + bp->skip_left;
52
53 uint n;
54
55 while (dst < dst_end) {
56 n = *src_n++;
57
58 if (src_px->a == 0) {
59 dst += n;
60 src_px ++;
61 src_n++;
62
63 if (dst > dst_end) anim += dst - dst_end;
64 } else {
65 if (dst + n > dst_end) {
66 uint d = dst_end - dst;
67 src_px += d;
68 src_n += d;
69
70 dst = dst_end - bp->skip_left;
71 dst_end = dst + bp->width;
72
73 n = min<uint>(n - d, (uint)bp->width);
74 goto draw;
75 }
76 dst += n;
77 src_px += n;
78 src_n += n;
79 }
80 }
81
82 dst -= bp->skip_left;
83 dst_end -= bp->skip_left;
84
85 dst_end += bp->width;
86
87 while (dst < dst_end) {
88 n = min<uint>(*src_n++, (uint)(dst_end - dst));
89
90 if (src_px->a == 0) {
91 anim += n;
92 dst += n;
93 src_px++;
94 src_n++;
95 continue;
96 }
97
98 draw:;
99
100 switch (mode) {
101 case BM_COLOUR_REMAP:
102 if (src_px->a == 255) {
103 do {
104 uint m = *src_n;
105 /* In case the m-channel is zero, do not remap this pixel in any way */
106 if (m == 0) {
107 *dst = src_px->data;
108 *anim = 0;
109 } else {
110 uint r = remap[GB(m, 0, 8)];
111 *anim = r | (m & 0xFF00);
112 if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
113 }
114 anim++;
115 dst++;
116 src_px++;
117 src_n++;
118 } while (--n != 0);
119 } else {
120 do {
121 uint m = *src_n;
122 if (m == 0) {
123 *dst = ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, *dst);
124 *anim = 0;
125 } else {
126 uint r = remap[GB(m, 0, 8)];
127 *anim = 0;
128 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
129 }
130 anim++;
131 dst++;
132 src_px++;
133 src_n++;
134 } while (--n != 0);
135 }
136 break;
137
138 case BM_CRASH_REMAP:
139 if (src_px->a == 255) {
140 do {
141 uint m = *src_n;
142 if (m == 0) {
143 uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
144 *dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
145 *anim = 0;
146 } else {
147 uint r = remap[GB(m, 0, 8)];
148 *anim = r | (m & 0xFF00);
149 if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
150 }
151 anim++;
152 dst++;
153 src_px++;
154 src_n++;
155 } while (--n != 0);
156 } else {
157 do {
158 uint m = *src_n;
159 if (m == 0) {
160 if (src_px->a != 0) {
161 uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
162 *dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
163 *anim = 0;
164 }
165 } else {
166 uint r = remap[GB(m, 0, 8)];
167 *anim = 0;
168 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
169 }
170 anim++;
171 dst++;
172 src_px++;
173 src_n++;
174 } while (--n != 0);
175 }
176 break;
177
178
179 case BM_BLACK_REMAP:
180 do {
181 *dst++ = Colour(0, 0, 0);
182 *anim++ = 0;
183 src_px++;
184 src_n++;
185 } while (--n != 0);
186 break;
187
188 case BM_TRANSPARENT:
189 /* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
190 * This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
191 * we produce a result the newgrf maker didn't expect ;) */
192
193 /* Make the current colour a bit more black, so it looks like this image is transparent */
194 src_n += n;
195 if (src_px->a == 255) {
196 src_px += n;
197 do {
198 *dst = MakeTransparent(*dst, 3, 4);
199 *anim = 0;
200 anim++;
201 dst++;
202 } while (--n != 0);
203 } else {
204 do {
205 *dst = MakeTransparent(*dst, (256 * 4 - src_px->a), 256 * 4);
206 *anim = 0;
207 anim++;
208 dst++;
209 src_px++;
210 } while (--n != 0);
211 }
212 break;
213
214 default:
215 if (src_px->a == 255) {
216 do {
217 /* Compiler assumes pointer aliasing, can't optimise this on its own */
218 uint m = GB(*src_n, 0, 8);
219 /* Above PALETTE_ANIM_START is palette animation */
220 *anim++ = *src_n;
221 *dst++ = (m >= PALETTE_ANIM_START) ? this->AdjustBrightness(this->LookupColourInPalette(m), GB(*src_n, 8, 8)) : src_px->data;
222 src_px++;
223 src_n++;
224 } while (--n != 0);
225 } else {
226 do {
227 uint m = GB(*src_n, 0, 8);
228 *anim++ = 0;
229 if (m >= PALETTE_ANIM_START) {
230 *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(m), GB(*src_n, 8, 8)), src_px->a, *dst);
231 } else {
232 *dst = ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, *dst);
233 }
234 dst++;
235 src_px++;
236 src_n++;
237 } while (--n != 0);
238 }
239 break;
240 }
241 }
242
243 anim = anim_ln;
244 dst = dst_ln;
245 src_px = src_px_ln;
246 src_n = src_n_ln;
247 }
248 }
249
250 void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
251 {
252 if (_screen_disable_anim) {
253 /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent Draw() */
254 Blitter_32bppOptimized::Draw(bp, mode, zoom);
255 return;
256 }
257
258 switch (mode) {
259 default: NOT_REACHED();
260 case BM_NORMAL: Draw<BM_NORMAL> (bp, zoom); return;
261 case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
262 case BM_TRANSPARENT: Draw<BM_TRANSPARENT> (bp, zoom); return;
263 case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP> (bp, zoom); return;
264 case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP> (bp, zoom); return;
265 }
266 }
267
268 void Blitter_32bppAnim::DrawColourMappingRect(void *dst, int width, int height, PaletteID pal)
269 {
270 if (_screen_disable_anim) {
271 /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawColourMappingRect() */
272 Blitter_32bppOptimized::DrawColourMappingRect(dst, width, height, pal);
273 return;
274 }
275
276 Colour *udst = (Colour *)dst;
277 uint16 *anim;
278
279 anim = this->anim_buf + ((uint32 *)dst - (uint32 *)_screen.dst_ptr);
280
281 if (pal == PALETTE_TO_TRANSPARENT) {
282 do {
283 for (int i = 0; i != width; i++) {
284 *udst = MakeTransparent(*udst, 154);
285 *anim = 0;
286 udst++;
287 anim++;
288 }
289 udst = udst - width + _screen.pitch;
290 anim = anim - width + this->anim_buf_width;
291 } while (--height);
292 return;
293 }
294 if (pal == PALETTE_NEWSPAPER) {
295 do {
296 for (int i = 0; i != width; i++) {
297 *udst = MakeGrey(*udst);
298 *anim = 0;
299 udst++;
300 anim++;
301 }
302 udst = udst - width + _screen.pitch;
303 anim = anim - width + this->anim_buf_width;
304 } while (--height);
305 return;
306 }
307
308 DEBUG(misc, 0, "32bpp blitter doesn't know how to draw this colour table ('%d')", pal);
309 }
310
311 void Blitter_32bppAnim::SetPixel(void *video, int x, int y, uint8 colour)
312 {
313 *((Colour *)video + x + y * _screen.pitch) = LookupColourInPalette(colour);
314
315 /* Set the colour in the anim-buffer too, if we are rendering to the screen */
316 if (_screen_disable_anim) return;
317 this->anim_buf[((uint32 *)video - (uint32 *)_screen.dst_ptr) + x + y * this->anim_buf_width] = colour | (DEFAULT_BRIGHTNESS << 8);
318 }
319
320 void Blitter_32bppAnim::DrawRect(void *video, int width, int height, uint8 colour)
321 {
322 if (_screen_disable_anim) {
323 /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawRect() */
324 Blitter_32bppOptimized::DrawRect(video, width, height, colour);
325 return;
326 }
327
328 Colour colour32 = LookupColourInPalette(colour);
329 uint16 *anim_line;
330
331 anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
332
333 do {
334 Colour *dst = (Colour *)video;
335 uint16 *anim = anim_line;
336
337 for (int i = width; i > 0; i--) {
338 *dst = colour32;
339 /* Set the colour in the anim-buffer too */
340 *anim = colour | (DEFAULT_BRIGHTNESS << 8);
341 dst++;
342 anim++;
343 }
344 video = (uint32 *)video + _screen.pitch;
345 anim_line += this->anim_buf_width;
346 } while (--height);
347 }
348
349 void Blitter_32bppAnim::CopyFromBuffer(void *video, const void *src, int width, int height)
350 {
351 assert(!_screen_disable_anim);
352 assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
353 Colour *dst = (Colour *)video;
354 const uint32 *usrc = (const uint32 *)src;
355 uint16 *anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
356
357 for (; height > 0; height--) {
358 /* We need to keep those for palette animation. */
359 Colour *dst_pal = dst;
360 uint16 *anim_pal = anim_line;
361
362 memcpy(dst, usrc, width * sizeof(uint32));
363 usrc += width;
364 dst += _screen.pitch;
365 /* Copy back the anim-buffer */
366 memcpy(anim_line, usrc, width * sizeof(uint16));
367 usrc = (const uint32 *)((const uint16 *)usrc + width);
368 anim_line += this->anim_buf_width;
369
370 /* Okay, it is *very* likely that the image we stored is using
371 * the wrong palette animated colours. There are two things we
372 * can do to fix this. The first is simply reviewing the whole
373 * screen after we copied the buffer, i.e. run PaletteAnimate,
374 * however that forces a full screen redraw which is expensive
375 * for just the cursor. This just copies the implementation of
376 * palette animation, much cheaper though slightly nastier. */
377 for (int i = 0; i < width; i++) {
378 uint colour = GB(*anim_pal, 0, 8);
379 if (colour >= PALETTE_ANIM_START) {
380 /* Update this pixel */
381 *dst_pal = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim_pal, 8, 8));
382 }
383 dst_pal++;
384 anim_pal++;
385 }
386 }
387 }
388
389 void Blitter_32bppAnim::CopyToBuffer(const void *video, void *dst, int width, int height)
390 {
391 assert(!_screen_disable_anim);
392 assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
393 uint32 *udst = (uint32 *)dst;
394 const uint32 *src = (const uint32 *)video;
395 const uint16 *anim_line;
396
397 if (this->anim_buf == NULL) return;
398
399 anim_line = ((const uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
400
401 for (; height > 0; height--) {
402 memcpy(udst, src, width * sizeof(uint32));
403 src += _screen.pitch;
404 udst += width;
405 /* Copy the anim-buffer */
406 memcpy(udst, anim_line, width * sizeof(uint16));
407 udst = (uint32 *)((uint16 *)udst + width);
408 anim_line += this->anim_buf_width;
409 }
410 }
411
412 void Blitter_32bppAnim::ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
413 {
414 assert(!_screen_disable_anim);
415 assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
416 uint16 *dst, *src;
417
418 /* We need to scroll the anim-buffer too */
419 if (scroll_y > 0) {
420 dst = this->anim_buf + left + (top + height - 1) * this->anim_buf_width;
421 src = dst - scroll_y * this->anim_buf_width;
422
423 /* Adjust left & width */
424 if (scroll_x >= 0) {
425 dst += scroll_x;
426 } else {
427 src -= scroll_x;
428 }
429
430 uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
431 uint th = height - scroll_y;
432 for (; th > 0; th--) {
433 memcpy(dst, src, tw * sizeof(uint16));
434 src -= this->anim_buf_width;
435 dst -= this->anim_buf_width;
436 }
437 } else {
438 /* Calculate pointers */
439 dst = this->anim_buf + left + top * this->anim_buf_width;
440 src = dst - scroll_y * this->anim_buf_width;
441
442 /* Adjust left & width */
443 if (scroll_x >= 0) {
444 dst += scroll_x;
445 } else {
446 src -= scroll_x;
447 }
448
449 /* the y-displacement may be 0 therefore we have to use memmove,
450 * because source and destination may overlap */
451 uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
452 uint th = height + scroll_y;
453 for (; th > 0; th--) {
454 memmove(dst, src, tw * sizeof(uint16));
455 src += this->anim_buf_width;
456 dst += this->anim_buf_width;
457 }
458 }
459
460 Blitter_32bppBase::ScrollBuffer(video, left, top, width, height, scroll_x, scroll_y);
461 }
462
463 int Blitter_32bppAnim::BufferSize(int width, int height)
464 {
465 return width * height * (sizeof(uint32) + sizeof(uint16));
466 }
467
468 void Blitter_32bppAnim::PaletteAnimate(const Palette &palette)
469 {
470 assert(!_screen_disable_anim);
471
472 this->palette = palette;
473 /* If first_dirty is 0, it is for 8bpp indication to send the new
474 * palette. However, only the animation colours might possibly change.
475 * Especially when going between toyland and non-toyland. */
476 assert(this->palette.first_dirty == PALETTE_ANIM_START || this->palette.first_dirty == 0);
477
478 const uint16 *anim = this->anim_buf;
479 Colour *dst = (Colour *)_screen.dst_ptr;
480
481 /* Let's walk the anim buffer and try to find the pixels */
482 for (int y = this->anim_buf_height; y != 0 ; y--) {
483 for (int x = this->anim_buf_width; x != 0 ; x--) {
484 uint colour = GB(*anim, 0, 8);
485 if (colour >= PALETTE_ANIM_START) {
486 /* Update this pixel */
487 *dst = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim, 8, 8));
488 }
489 dst++;
490 anim++;
491 }
492 dst += _screen.pitch - this->anim_buf_width;
493 }
494
495 /* Make sure the backend redraws the whole screen */
496 VideoDriver::GetInstance()->MakeDirty(0, 0, _screen.width, _screen.height);
497 }
498
499 Blitter::PaletteAnimation Blitter_32bppAnim::UsePaletteAnimation()
500 {
501 return Blitter::PALETTE_ANIMATION_BLITTER;
502 }
503
504 void Blitter_32bppAnim::PostResize()
505 {
506 if (_screen.width != this->anim_buf_width || _screen.height != this->anim_buf_height) {
507 /* The size of the screen changed; we can assume we can wipe all data from our buffer */
508 free(this->anim_buf);
509 this->anim_buf = CallocT<uint16>(_screen.width * _screen.height);
510 this->anim_buf_width = _screen.width;
511 this->anim_buf_height = _screen.height;
512 }
513 }