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

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32bpp_anim.cpp
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1 /* $Id: 32bpp_anim.cpp 27575 2016-05-22 10:28:57Z frosch $ */
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 Blitter_32bppAnim::~Blitter_32bppAnim()
24 {
25 free(this->anim_buf);
26 }
27
28 template <BlitterMode mode>
29 inline void Blitter_32bppAnim::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
30 {
31 const SpriteData *src = (const SpriteData *)bp->sprite;
32
33 const Colour *src_px = (const Colour *)(src->data + src->offset[zoom][0]);
34 const uint16 *src_n = (const uint16 *)(src->data + src->offset[zoom][1]);
35
36 for (uint i = bp->skip_top; i != 0; i--) {
37 src_px = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
38 src_n = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
39 }
40
41 Colour *dst = (Colour *)bp->dst + bp->top * bp->pitch + bp->left;
42 uint16 *anim = this->anim_buf + ((uint32 *)bp->dst - (uint32 *)_screen.dst_ptr) + bp->top * this->anim_buf_width + bp->left;
43
44 const byte *remap = bp->remap; // store so we don't have to access it via bp everytime
45
46 for (int y = 0; y < bp->height; y++) {
47 Colour *dst_ln = dst + bp->pitch;
48 uint16 *anim_ln = anim + this->anim_buf_width;
49
50 const Colour *src_px_ln = (const Colour *)((const byte *)src_px + *(const uint32 *)src_px);
51 src_px++;
52
53 const uint16 *src_n_ln = (const uint16 *)((const byte *)src_n + *(const uint32 *)src_n);
54 src_n += 2;
55
56 Colour *dst_end = dst + bp->skip_left;
57
58 uint n;
59
60 while (dst < dst_end) {
61 n = *src_n++;
62
63 if (src_px->a == 0) {
64 dst += n;
65 src_px ++;
66 src_n++;
67
68 if (dst > dst_end) anim += dst - dst_end;
69 } else {
70 if (dst + n > dst_end) {
71 uint d = dst_end - dst;
72 src_px += d;
73 src_n += d;
74
75 dst = dst_end - bp->skip_left;
76 dst_end = dst + bp->width;
77
78 n = min<uint>(n - d, (uint)bp->width);
79 goto draw;
80 }
81 dst += n;
82 src_px += n;
83 src_n += n;
84 }
85 }
86
87 dst -= bp->skip_left;
88 dst_end -= bp->skip_left;
89
90 dst_end += bp->width;
91
92 while (dst < dst_end) {
93 n = min<uint>(*src_n++, (uint)(dst_end - dst));
94
95 if (src_px->a == 0) {
96 anim += n;
97 dst += n;
98 src_px++;
99 src_n++;
100 continue;
101 }
102
103 draw:;
104
105 switch (mode) {
106 case BM_COLOUR_REMAP:
107 if (src_px->a == 255) {
108 do {
109 uint m = *src_n;
110 /* In case the m-channel is zero, do not remap this pixel in any way */
111 if (m == 0) {
112 *dst = src_px->data;
113 *anim = 0;
114 } else {
115 uint r = remap[GB(m, 0, 8)];
116 *anim = r | (m & 0xFF00);
117 if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
118 }
119 anim++;
120 dst++;
121 src_px++;
122 src_n++;
123 } while (--n != 0);
124 } else {
125 do {
126 uint m = *src_n;
127 if (m == 0) {
128 *dst = ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, *dst);
129 *anim = 0;
130 } else {
131 uint r = remap[GB(m, 0, 8)];
132 *anim = 0;
133 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
134 }
135 anim++;
136 dst++;
137 src_px++;
138 src_n++;
139 } while (--n != 0);
140 }
141 break;
142
143 case BM_CRASH_REMAP:
144 if (src_px->a == 255) {
145 do {
146 uint m = *src_n;
147 if (m == 0) {
148 uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
149 *dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
150 *anim = 0;
151 } else {
152 uint r = remap[GB(m, 0, 8)];
153 *anim = r | (m & 0xFF00);
154 if (r != 0) *dst = this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8));
155 }
156 anim++;
157 dst++;
158 src_px++;
159 src_n++;
160 } while (--n != 0);
161 } else {
162 do {
163 uint m = *src_n;
164 if (m == 0) {
165 if (src_px->a != 0) {
166 uint8 g = MakeDark(src_px->r, src_px->g, src_px->b);
167 *dst = ComposeColourRGBA(g, g, g, src_px->a, *dst);
168 *anim = 0;
169 }
170 } else {
171 uint r = remap[GB(m, 0, 8)];
172 *anim = 0;
173 if (r != 0) *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(r), GB(m, 8, 8)), src_px->a, *dst);
174 }
175 anim++;
176 dst++;
177 src_px++;
178 src_n++;
179 } while (--n != 0);
180 }
181 break;
182
183
184 case BM_BLACK_REMAP:
185 do {
186 *dst++ = Colour(0, 0, 0);
187 *anim++ = 0;
188 src_px++;
189 src_n++;
190 } while (--n != 0);
191 break;
192
193 case BM_TRANSPARENT:
194 /* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
195 * This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
196 * we produce a result the newgrf maker didn't expect ;) */
197
198 /* Make the current colour a bit more black, so it looks like this image is transparent */
199 src_n += n;
200 if (src_px->a == 255) {
201 src_px += n;
202 do {
203 *dst = MakeTransparent(*dst, 3, 4);
204 *anim = 0;
205 anim++;
206 dst++;
207 } while (--n != 0);
208 } else {
209 do {
210 *dst = MakeTransparent(*dst, (256 * 4 - src_px->a), 256 * 4);
211 *anim = 0;
212 anim++;
213 dst++;
214 src_px++;
215 } while (--n != 0);
216 }
217 break;
218
219 default:
220 if (src_px->a == 255) {
221 do {
222 /* Compiler assumes pointer aliasing, can't optimise this on its own */
223 uint m = GB(*src_n, 0, 8);
224 /* Above PALETTE_ANIM_START is palette animation */
225 *anim++ = *src_n;
226 *dst++ = (m >= PALETTE_ANIM_START) ? this->AdjustBrightness(this->LookupColourInPalette(m), GB(*src_n, 8, 8)) : src_px->data;
227 src_px++;
228 src_n++;
229 } while (--n != 0);
230 } else {
231 do {
232 uint m = GB(*src_n, 0, 8);
233 *anim++ = 0;
234 if (m >= PALETTE_ANIM_START) {
235 *dst = ComposeColourPANoCheck(this->AdjustBrightness(this->LookupColourInPalette(m), GB(*src_n, 8, 8)), src_px->a, *dst);
236 } else {
237 *dst = ComposeColourRGBANoCheck(src_px->r, src_px->g, src_px->b, src_px->a, *dst);
238 }
239 dst++;
240 src_px++;
241 src_n++;
242 } while (--n != 0);
243 }
244 break;
245 }
246 }
247
248 anim = anim_ln;
249 dst = dst_ln;
250 src_px = src_px_ln;
251 src_n = src_n_ln;
252 }
253 }
254
255 void Blitter_32bppAnim::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
256 {
257 if (_screen_disable_anim) {
258 /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent Draw() */
259 Blitter_32bppOptimized::Draw(bp, mode, zoom);
260 return;
261 }
262
263 switch (mode) {
264 default: NOT_REACHED();
265 case BM_NORMAL: Draw<BM_NORMAL> (bp, zoom); return;
266 case BM_COLOUR_REMAP: Draw<BM_COLOUR_REMAP>(bp, zoom); return;
267 case BM_TRANSPARENT: Draw<BM_TRANSPARENT> (bp, zoom); return;
268 case BM_CRASH_REMAP: Draw<BM_CRASH_REMAP> (bp, zoom); return;
269 case BM_BLACK_REMAP: Draw<BM_BLACK_REMAP> (bp, zoom); return;
270 }
271 }
272
273 void Blitter_32bppAnim::DrawColourMappingRect(void *dst, int width, int height, PaletteID pal)
274 {
275 if (_screen_disable_anim) {
276 /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawColourMappingRect() */
277 Blitter_32bppOptimized::DrawColourMappingRect(dst, width, height, pal);
278 return;
279 }
280
281 Colour *udst = (Colour *)dst;
282 uint16 *anim;
283
284 anim = this->anim_buf + ((uint32 *)dst - (uint32 *)_screen.dst_ptr);
285
286 if (pal == PALETTE_TO_TRANSPARENT) {
287 do {
288 for (int i = 0; i != width; i++) {
289 *udst = MakeTransparent(*udst, 154);
290 *anim = 0;
291 udst++;
292 anim++;
293 }
294 udst = udst - width + _screen.pitch;
295 anim = anim - width + this->anim_buf_width;
296 } while (--height);
297 return;
298 }
299 if (pal == PALETTE_NEWSPAPER) {
300 do {
301 for (int i = 0; i != width; i++) {
302 *udst = MakeGrey(*udst);
303 *anim = 0;
304 udst++;
305 anim++;
306 }
307 udst = udst - width + _screen.pitch;
308 anim = anim - width + this->anim_buf_width;
309 } while (--height);
310 return;
311 }
312
313 DEBUG(misc, 0, "32bpp blitter doesn't know how to draw this colour table ('%d')", pal);
314 }
315
316 void Blitter_32bppAnim::SetPixel(void *video, int x, int y, uint8 colour)
317 {
318 *((Colour *)video + x + y * _screen.pitch) = LookupColourInPalette(colour);
319
320 /* Set the colour in the anim-buffer too, if we are rendering to the screen */
321 if (_screen_disable_anim) return;
322 this->anim_buf[((uint32 *)video - (uint32 *)_screen.dst_ptr) + x + y * this->anim_buf_width] = colour | (DEFAULT_BRIGHTNESS << 8);
323 }
324
325 void Blitter_32bppAnim::DrawRect(void *video, int width, int height, uint8 colour)
326 {
327 if (_screen_disable_anim) {
328 /* This means our output is not to the screen, so we can't be doing any animation stuff, so use our parent DrawRect() */
329 Blitter_32bppOptimized::DrawRect(video, width, height, colour);
330 return;
331 }
332
333 Colour colour32 = LookupColourInPalette(colour);
334 uint16 *anim_line;
335
336 anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
337
338 do {
339 Colour *dst = (Colour *)video;
340 uint16 *anim = anim_line;
341
342 for (int i = width; i > 0; i--) {
343 *dst = colour32;
344 /* Set the colour in the anim-buffer too */
345 *anim = colour | (DEFAULT_BRIGHTNESS << 8);
346 dst++;
347 anim++;
348 }
349 video = (uint32 *)video + _screen.pitch;
350 anim_line += this->anim_buf_width;
351 } while (--height);
352 }
353
354 void Blitter_32bppAnim::CopyFromBuffer(void *video, const void *src, int width, int height)
355 {
356 assert(!_screen_disable_anim);
357 assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
358 Colour *dst = (Colour *)video;
359 const uint32 *usrc = (const uint32 *)src;
360 uint16 *anim_line = ((uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
361
362 for (; height > 0; height--) {
363 /* We need to keep those for palette animation. */
364 Colour *dst_pal = dst;
365 uint16 *anim_pal = anim_line;
366
367 memcpy(dst, usrc, width * sizeof(uint32));
368 usrc += width;
369 dst += _screen.pitch;
370 /* Copy back the anim-buffer */
371 memcpy(anim_line, usrc, width * sizeof(uint16));
372 usrc = (const uint32 *)((const uint16 *)usrc + width);
373 anim_line += this->anim_buf_width;
374
375 /* Okay, it is *very* likely that the image we stored is using
376 * the wrong palette animated colours. There are two things we
377 * can do to fix this. The first is simply reviewing the whole
378 * screen after we copied the buffer, i.e. run PaletteAnimate,
379 * however that forces a full screen redraw which is expensive
380 * for just the cursor. This just copies the implementation of
381 * palette animation, much cheaper though slightly nastier. */
382 for (int i = 0; i < width; i++) {
383 uint colour = GB(*anim_pal, 0, 8);
384 if (colour >= PALETTE_ANIM_START) {
385 /* Update this pixel */
386 *dst_pal = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim_pal, 8, 8));
387 }
388 dst_pal++;
389 anim_pal++;
390 }
391 }
392 }
393
394 void Blitter_32bppAnim::CopyToBuffer(const void *video, void *dst, int width, int height)
395 {
396 assert(!_screen_disable_anim);
397 assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
398 uint32 *udst = (uint32 *)dst;
399 const uint32 *src = (const uint32 *)video;
400 const uint16 *anim_line;
401
402 if (this->anim_buf == NULL) return;
403
404 anim_line = ((const uint32 *)video - (uint32 *)_screen.dst_ptr) + this->anim_buf;
405
406 for (; height > 0; height--) {
407 memcpy(udst, src, width * sizeof(uint32));
408 src += _screen.pitch;
409 udst += width;
410 /* Copy the anim-buffer */
411 memcpy(udst, anim_line, width * sizeof(uint16));
412 udst = (uint32 *)((uint16 *)udst + width);
413 anim_line += this->anim_buf_width;
414 }
415 }
416
417 void Blitter_32bppAnim::ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y)
418 {
419 assert(!_screen_disable_anim);
420 assert(video >= _screen.dst_ptr && video <= (uint32 *)_screen.dst_ptr + _screen.width + _screen.height * _screen.pitch);
421 uint16 *dst, *src;
422
423 /* We need to scroll the anim-buffer too */
424 if (scroll_y > 0) {
425 dst = this->anim_buf + left + (top + height - 1) * this->anim_buf_width;
426 src = dst - scroll_y * this->anim_buf_width;
427
428 /* Adjust left & width */
429 if (scroll_x >= 0) {
430 dst += scroll_x;
431 } else {
432 src -= scroll_x;
433 }
434
435 uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
436 uint th = height - scroll_y;
437 for (; th > 0; th--) {
438 memcpy(dst, src, tw * sizeof(uint16));
439 src -= this->anim_buf_width;
440 dst -= this->anim_buf_width;
441 }
442 } else {
443 /* Calculate pointers */
444 dst = this->anim_buf + left + top * this->anim_buf_width;
445 src = dst - scroll_y * this->anim_buf_width;
446
447 /* Adjust left & width */
448 if (scroll_x >= 0) {
449 dst += scroll_x;
450 } else {
451 src -= scroll_x;
452 }
453
454 /* the y-displacement may be 0 therefore we have to use memmove,
455 * because source and destination may overlap */
456 uint tw = width + (scroll_x >= 0 ? -scroll_x : scroll_x);
457 uint th = height + scroll_y;
458 for (; th > 0; th--) {
459 memmove(dst, src, tw * sizeof(uint16));
460 src += this->anim_buf_width;
461 dst += this->anim_buf_width;
462 }
463 }
464
465 Blitter_32bppBase::ScrollBuffer(video, left, top, width, height, scroll_x, scroll_y);
466 }
467
468 int Blitter_32bppAnim::BufferSize(int width, int height)
469 {
470 return width * height * (sizeof(uint32) + sizeof(uint16));
471 }
472
473 void Blitter_32bppAnim::PaletteAnimate(const Palette &palette)
474 {
475 assert(!_screen_disable_anim);
476
477 this->palette = palette;
478 /* If first_dirty is 0, it is for 8bpp indication to send the new
479 * palette. However, only the animation colours might possibly change.
480 * Especially when going between toyland and non-toyland. */
481 assert(this->palette.first_dirty == PALETTE_ANIM_START || this->palette.first_dirty == 0);
482
483 const uint16 *anim = this->anim_buf;
484 Colour *dst = (Colour *)_screen.dst_ptr;
485
486 /* Let's walk the anim buffer and try to find the pixels */
487 for (int y = this->anim_buf_height; y != 0 ; y--) {
488 for (int x = this->anim_buf_width; x != 0 ; x--) {
489 uint colour = GB(*anim, 0, 8);
490 if (colour >= PALETTE_ANIM_START) {
491 /* Update this pixel */
492 *dst = this->AdjustBrightness(LookupColourInPalette(colour), GB(*anim, 8, 8));
493 }
494 dst++;
495 anim++;
496 }
497 dst += _screen.pitch - this->anim_buf_width;
498 }
499
500 /* Make sure the backend redraws the whole screen */
501 VideoDriver::GetInstance()->MakeDirty(0, 0, _screen.width, _screen.height);
502 }
503
504 Blitter::PaletteAnimation Blitter_32bppAnim::UsePaletteAnimation()
505 {
506 return Blitter::PALETTE_ANIMATION_BLITTER;
507 }
508
509 void Blitter_32bppAnim::PostResize()
510 {
511 if (_screen.width != this->anim_buf_width || _screen.height != this->anim_buf_height) {
512 /* The size of the screen changed; we can assume we can wipe all data from our buffer */
513 free(this->anim_buf);
514 this->anim_buf = CallocT<uint16>(_screen.width * _screen.height);
515 this->anim_buf_width = _screen.width;
516 this->anim_buf_height = _screen.height;
517 }
518 }