1 |
|
|
/* |
2 |
|
|
* The ManaPlus Client |
3 |
|
|
* Copyright (C) 2017-2019 The ManaPlus Developers |
4 |
|
|
* Copyright (C) 2019-2021 Andrei Karas |
5 |
|
|
* |
6 |
|
|
* This file is part of The ManaPlus Client. |
7 |
|
|
* |
8 |
|
|
* This program is free software; you can redistribute it and/or modify |
9 |
|
|
* it under the terms of the GNU General Public License as published by |
10 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
11 |
|
|
* any later version. |
12 |
|
|
* |
13 |
|
|
* This program is distributed in the hope that it will be useful, |
14 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 |
|
|
* GNU General Public License for more details. |
17 |
|
|
* |
18 |
|
|
* You should have received a copy of the GNU General Public License |
19 |
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 |
|
|
*/ |
21 |
|
|
|
22 |
|
|
/* |
23 |
|
|
|
24 |
|
|
SDL_gfxBlitFunc: custom blitters (part of SDL_gfx library) |
25 |
|
|
|
26 |
|
|
LGPL (c) A. Schiffler |
27 |
|
|
|
28 |
|
|
*/ |
29 |
|
|
|
30 |
|
|
#ifndef USE_SDL2 |
31 |
|
|
#include "resources/sdlgfxblitfunc.h" |
32 |
|
|
|
33 |
|
|
#include "utils/cast.h" |
34 |
|
|
#include "utils/checkutils.h" |
35 |
|
|
|
36 |
|
|
PRAGMA48(GCC diagnostic push) |
37 |
|
|
PRAGMA48(GCC diagnostic ignored "-Wshadow") |
38 |
|
|
#include <SDL_video.h> |
39 |
|
|
PRAGMA48(GCC diagnostic pop) |
40 |
|
|
|
41 |
|
|
#include "debug.h" |
42 |
|
|
|
43 |
|
|
#define GFX_DUFFS_LOOP4(pixel_copy_increment, width) \ |
44 |
|
|
int n = ((width) + 3) / 4; \ |
45 |
|
|
switch ((width) & 3) \ |
46 |
|
|
{ \ |
47 |
|
|
case 0: do { \ |
48 |
|
|
pixel_copy_increment; \ |
49 |
|
|
case 3: pixel_copy_increment; \ |
50 |
|
|
case 2: pixel_copy_increment; \ |
51 |
|
|
case 1: pixel_copy_increment; \ |
52 |
|
|
default: ; \ |
53 |
|
|
} while (--n > 0 ); \ |
54 |
|
|
} |
55 |
|
|
|
56 |
|
|
namespace |
57 |
|
|
{ |
58 |
|
|
struct SDL_gfxBlitInfo final |
59 |
|
|
{ |
60 |
|
|
A_DEFAULT_COPY(SDL_gfxBlitInfo) |
61 |
|
|
|
62 |
|
|
Uint8 *s_pixels; |
63 |
|
|
int s_width; |
64 |
|
|
int s_height; |
65 |
|
|
int s_skip; |
66 |
|
|
Uint8 *d_pixels; |
67 |
|
|
int d_width; |
68 |
|
|
int d_height; |
69 |
|
|
int d_skip; |
70 |
|
|
void *aux_data; |
71 |
|
|
SDL_PixelFormat *src; |
72 |
|
|
Uint8 *table; |
73 |
|
|
SDL_PixelFormat *dst; |
74 |
|
|
}; |
75 |
|
|
|
76 |
|
|
unsigned int GFX_ALPHA_ADJUST_ARRAY[256] = |
77 |
|
|
{ |
78 |
|
|
0, /* 0 */ |
79 |
|
|
15, /* 1 */ |
80 |
|
|
22, /* 2 */ |
81 |
|
|
27, /* 3 */ |
82 |
|
|
31, /* 4 */ |
83 |
|
|
35, /* 5 */ |
84 |
|
|
39, /* 6 */ |
85 |
|
|
42, /* 7 */ |
86 |
|
|
45, /* 8 */ |
87 |
|
|
47, /* 9 */ |
88 |
|
|
50, /* 10 */ |
89 |
|
|
52, /* 11 */ |
90 |
|
|
55, /* 12 */ |
91 |
|
|
57, /* 13 */ |
92 |
|
|
59, /* 14 */ |
93 |
|
|
61, /* 15 */ |
94 |
|
|
63, /* 16 */ |
95 |
|
|
65, /* 17 */ |
96 |
|
|
67, /* 18 */ |
97 |
|
|
69, /* 19 */ |
98 |
|
|
71, /* 20 */ |
99 |
|
|
73, /* 21 */ |
100 |
|
|
74, /* 22 */ |
101 |
|
|
76, /* 23 */ |
102 |
|
|
78, /* 24 */ |
103 |
|
|
79, /* 25 */ |
104 |
|
|
81, /* 26 */ |
105 |
|
|
82, /* 27 */ |
106 |
|
|
84, /* 28 */ |
107 |
|
|
85, /* 29 */ |
108 |
|
|
87, /* 30 */ |
109 |
|
|
88, /* 31 */ |
110 |
|
|
90, /* 32 */ |
111 |
|
|
91, /* 33 */ |
112 |
|
|
93, /* 34 */ |
113 |
|
|
94, /* 35 */ |
114 |
|
|
95, /* 36 */ |
115 |
|
|
97, /* 37 */ |
116 |
|
|
98, /* 38 */ |
117 |
|
|
99, /* 39 */ |
118 |
|
|
100, /* 40 */ |
119 |
|
|
102, /* 41 */ |
120 |
|
|
103, /* 42 */ |
121 |
|
|
104, /* 43 */ |
122 |
|
|
105, /* 44 */ |
123 |
|
|
107, /* 45 */ |
124 |
|
|
108, /* 46 */ |
125 |
|
|
109, /* 47 */ |
126 |
|
|
110, /* 48 */ |
127 |
|
|
111, /* 49 */ |
128 |
|
|
112, /* 50 */ |
129 |
|
|
114, /* 51 */ |
130 |
|
|
115, /* 52 */ |
131 |
|
|
116, /* 53 */ |
132 |
|
|
117, /* 54 */ |
133 |
|
|
118, /* 55 */ |
134 |
|
|
119, /* 56 */ |
135 |
|
|
120, /* 57 */ |
136 |
|
|
121, /* 58 */ |
137 |
|
|
122, /* 59 */ |
138 |
|
|
123, /* 60 */ |
139 |
|
|
124, /* 61 */ |
140 |
|
|
125, /* 62 */ |
141 |
|
|
126, /* 63 */ |
142 |
|
|
127, /* 64 */ |
143 |
|
|
128, /* 65 */ |
144 |
|
|
129, /* 66 */ |
145 |
|
|
130, /* 67 */ |
146 |
|
|
131, /* 68 */ |
147 |
|
|
132, /* 69 */ |
148 |
|
|
133, /* 70 */ |
149 |
|
|
134, /* 71 */ |
150 |
|
|
135, /* 72 */ |
151 |
|
|
136, /* 73 */ |
152 |
|
|
137, /* 74 */ |
153 |
|
|
138, /* 75 */ |
154 |
|
|
139, /* 76 */ |
155 |
|
|
140, /* 77 */ |
156 |
|
|
141, /* 78 */ |
157 |
|
|
141, /* 79 */ |
158 |
|
|
142, /* 80 */ |
159 |
|
|
143, /* 81 */ |
160 |
|
|
144, /* 82 */ |
161 |
|
|
145, /* 83 */ |
162 |
|
|
146, /* 84 */ |
163 |
|
|
147, /* 85 */ |
164 |
|
|
148, /* 86 */ |
165 |
|
|
148, /* 87 */ |
166 |
|
|
149, /* 88 */ |
167 |
|
|
150, /* 89 */ |
168 |
|
|
151, /* 90 */ |
169 |
|
|
152, /* 91 */ |
170 |
|
|
153, /* 92 */ |
171 |
|
|
153, /* 93 */ |
172 |
|
|
154, /* 94 */ |
173 |
|
|
155, /* 95 */ |
174 |
|
|
156, /* 96 */ |
175 |
|
|
157, /* 97 */ |
176 |
|
|
158, /* 98 */ |
177 |
|
|
158, /* 99 */ |
178 |
|
|
159, /* 100 */ |
179 |
|
|
160, /* 101 */ |
180 |
|
|
161, /* 102 */ |
181 |
|
|
162, /* 103 */ |
182 |
|
|
162, /* 104 */ |
183 |
|
|
163, /* 105 */ |
184 |
|
|
164, /* 106 */ |
185 |
|
|
165, /* 107 */ |
186 |
|
|
165, /* 108 */ |
187 |
|
|
166, /* 109 */ |
188 |
|
|
167, /* 110 */ |
189 |
|
|
168, /* 111 */ |
190 |
|
|
168, /* 112 */ |
191 |
|
|
169, /* 113 */ |
192 |
|
|
170, /* 114 */ |
193 |
|
|
171, /* 115 */ |
194 |
|
|
171, /* 116 */ |
195 |
|
|
172, /* 117 */ |
196 |
|
|
173, /* 118 */ |
197 |
|
|
174, /* 119 */ |
198 |
|
|
174, /* 120 */ |
199 |
|
|
175, /* 121 */ |
200 |
|
|
176, /* 122 */ |
201 |
|
|
177, /* 123 */ |
202 |
|
|
177, /* 124 */ |
203 |
|
|
178, /* 125 */ |
204 |
|
|
179, /* 126 */ |
205 |
|
|
179, /* 127 */ |
206 |
|
|
180, /* 128 */ |
207 |
|
|
181, /* 129 */ |
208 |
|
|
182, /* 130 */ |
209 |
|
|
182, /* 131 */ |
210 |
|
|
183, /* 132 */ |
211 |
|
|
184, /* 133 */ |
212 |
|
|
184, /* 134 */ |
213 |
|
|
185, /* 135 */ |
214 |
|
|
186, /* 136 */ |
215 |
|
|
186, /* 137 */ |
216 |
|
|
187, /* 138 */ |
217 |
|
|
188, /* 139 */ |
218 |
|
|
188, /* 140 */ |
219 |
|
|
189, /* 141 */ |
220 |
|
|
190, /* 142 */ |
221 |
|
|
190, /* 143 */ |
222 |
|
|
191, /* 144 */ |
223 |
|
|
192, /* 145 */ |
224 |
|
|
192, /* 146 */ |
225 |
|
|
193, /* 147 */ |
226 |
|
|
194, /* 148 */ |
227 |
|
|
194, /* 149 */ |
228 |
|
|
195, /* 150 */ |
229 |
|
|
196, /* 151 */ |
230 |
|
|
196, /* 152 */ |
231 |
|
|
197, /* 153 */ |
232 |
|
|
198, /* 154 */ |
233 |
|
|
198, /* 155 */ |
234 |
|
|
199, /* 156 */ |
235 |
|
|
200, /* 157 */ |
236 |
|
|
200, /* 158 */ |
237 |
|
|
201, /* 159 */ |
238 |
|
|
201, /* 160 */ |
239 |
|
|
202, /* 161 */ |
240 |
|
|
203, /* 162 */ |
241 |
|
|
203, /* 163 */ |
242 |
|
|
204, /* 164 */ |
243 |
|
|
205, /* 165 */ |
244 |
|
|
205, /* 166 */ |
245 |
|
|
206, /* 167 */ |
246 |
|
|
206, /* 168 */ |
247 |
|
|
207, /* 169 */ |
248 |
|
|
208, /* 170 */ |
249 |
|
|
208, /* 171 */ |
250 |
|
|
209, /* 172 */ |
251 |
|
|
210, /* 173 */ |
252 |
|
|
210, /* 174 */ |
253 |
|
|
211, /* 175 */ |
254 |
|
|
211, /* 176 */ |
255 |
|
|
212, /* 177 */ |
256 |
|
|
213, /* 178 */ |
257 |
|
|
213, /* 179 */ |
258 |
|
|
214, /* 180 */ |
259 |
|
|
214, /* 181 */ |
260 |
|
|
215, /* 182 */ |
261 |
|
|
216, /* 183 */ |
262 |
|
|
216, /* 184 */ |
263 |
|
|
217, /* 185 */ |
264 |
|
|
217, /* 186 */ |
265 |
|
|
218, /* 187 */ |
266 |
|
|
218, /* 188 */ |
267 |
|
|
219, /* 189 */ |
268 |
|
|
220, /* 190 */ |
269 |
|
|
220, /* 191 */ |
270 |
|
|
221, /* 192 */ |
271 |
|
|
221, /* 193 */ |
272 |
|
|
222, /* 194 */ |
273 |
|
|
222, /* 195 */ |
274 |
|
|
223, /* 196 */ |
275 |
|
|
224, /* 197 */ |
276 |
|
|
224, /* 198 */ |
277 |
|
|
225, /* 199 */ |
278 |
|
|
225, /* 200 */ |
279 |
|
|
226, /* 201 */ |
280 |
|
|
226, /* 202 */ |
281 |
|
|
227, /* 203 */ |
282 |
|
|
228, /* 204 */ |
283 |
|
|
228, /* 205 */ |
284 |
|
|
229, /* 206 */ |
285 |
|
|
229, /* 207 */ |
286 |
|
|
230, /* 208 */ |
287 |
|
|
230, /* 209 */ |
288 |
|
|
231, /* 210 */ |
289 |
|
|
231, /* 211 */ |
290 |
|
|
232, /* 212 */ |
291 |
|
|
233, /* 213 */ |
292 |
|
|
233, /* 214 */ |
293 |
|
|
234, /* 215 */ |
294 |
|
|
234, /* 216 */ |
295 |
|
|
235, /* 217 */ |
296 |
|
|
235, /* 218 */ |
297 |
|
|
236, /* 219 */ |
298 |
|
|
236, /* 220 */ |
299 |
|
|
237, /* 221 */ |
300 |
|
|
237, /* 222 */ |
301 |
|
|
238, /* 223 */ |
302 |
|
|
238, /* 224 */ |
303 |
|
|
239, /* 225 */ |
304 |
|
|
240, /* 226 */ |
305 |
|
|
240, /* 227 */ |
306 |
|
|
241, /* 228 */ |
307 |
|
|
241, /* 229 */ |
308 |
|
|
242, /* 230 */ |
309 |
|
|
242, /* 231 */ |
310 |
|
|
243, /* 232 */ |
311 |
|
|
243, /* 233 */ |
312 |
|
|
244, /* 234 */ |
313 |
|
|
244, /* 235 */ |
314 |
|
|
245, /* 236 */ |
315 |
|
|
245, /* 237 */ |
316 |
|
|
246, /* 238 */ |
317 |
|
|
246, /* 239 */ |
318 |
|
|
247, /* 240 */ |
319 |
|
|
247, /* 241 */ |
320 |
|
|
248, /* 242 */ |
321 |
|
|
248, /* 243 */ |
322 |
|
|
249, /* 244 */ |
323 |
|
|
249, /* 245 */ |
324 |
|
|
250, /* 246 */ |
325 |
|
|
250, /* 247 */ |
326 |
|
|
251, /* 248 */ |
327 |
|
|
251, /* 249 */ |
328 |
|
|
252, /* 250 */ |
329 |
|
|
252, /* 251 */ |
330 |
|
|
253, /* 252 */ |
331 |
|
|
253, /* 253 */ |
332 |
|
|
254, /* 254 */ |
333 |
|
|
255 /* 255 */ |
334 |
|
|
}; |
335 |
|
|
} // namespace |
336 |
|
|
|
337 |
|
661 |
static void _SDL_gfxBlitBlitterRGBA(const SDL_gfxBlitInfo *const info) |
338 |
|
|
{ |
339 |
|
661 |
const int width = info->d_width; |
340 |
|
661 |
int height = info->d_height; |
341 |
|
661 |
Uint8 *src = info->s_pixels; |
342 |
|
661 |
const int srcskip = info->s_skip; |
343 |
|
661 |
Uint8 *dst = info->d_pixels; |
344 |
|
661 |
const int dstskip = info->d_skip; |
345 |
|
661 |
const SDL_PixelFormat *const srcfmt = info->src; |
346 |
|
|
|
347 |
✓✓ |
24885 |
while ((height--) != 0) |
348 |
|
|
{ |
349 |
✓✓✓✓
✗✓✓ |
12112 |
GFX_DUFFS_LOOP4( |
350 |
|
|
{ |
351 |
|
|
Uint32 pixel; |
352 |
|
|
uint32_t sR; |
353 |
|
|
uint32_t sG; |
354 |
|
|
uint32_t sB; |
355 |
|
|
uint32_t sA; |
356 |
|
|
uint32_t dR; |
357 |
|
|
uint32_t dG; |
358 |
|
|
uint32_t dB; |
359 |
|
|
uint32_t dA; |
360 |
|
|
uint32_t sAA; |
361 |
|
|
|
362 |
|
|
pixel = *(reinterpret_cast<uint32_t *>(src)); |
363 |
|
|
sR = ((pixel & srcfmt->Rmask) >> srcfmt->Rshift); |
364 |
|
|
sG = ((pixel & srcfmt->Gmask) >> srcfmt->Gshift); |
365 |
|
|
sB = ((pixel & srcfmt->Bmask) >> srcfmt->Bshift); |
366 |
|
|
sA = ((pixel & srcfmt->Amask) >> srcfmt->Ashift); |
367 |
|
|
|
368 |
|
|
pixel = *(reinterpret_cast<uint32_t *>(dst)); |
369 |
|
|
dR = pixel & 0xffU; |
370 |
|
|
dG = ((pixel & 0xff00U) >> 8); |
371 |
|
|
dB = ((pixel & 0xff0000U) >> 16); |
372 |
|
|
dA = ((pixel & 0xff000000U) >> 24); |
373 |
|
|
|
374 |
|
|
sAA = GFX_ALPHA_ADJUST_ARRAY[sA & 255]; |
375 |
|
|
dR = (((sR - dR) * (sAA)) / 255) + dR; |
376 |
|
|
dG = (((sG - dG) * (sAA)) / 255) + dG; |
377 |
|
|
dB = (((sB - dB) * (sAA)) / 255) + dB; |
378 |
|
|
dA |= sAA; |
379 |
|
|
|
380 |
|
|
*(reinterpret_cast<uint32_t *>(dst)) = dR | |
381 |
|
|
(dG << 8) | |
382 |
|
|
(dB << 16) | |
383 |
|
|
(dA << 24); |
384 |
|
|
|
385 |
|
|
src += 4; |
386 |
|
|
dst += 4; |
387 |
|
|
}, width) |
388 |
|
12112 |
src += srcskip; |
389 |
|
12112 |
dst += dstskip; |
390 |
|
|
} |
391 |
|
661 |
} |
392 |
|
|
|
393 |
|
661 |
static int _SDL_gfxBlitRGBACall(const SDL_Surface *const src, |
394 |
|
|
const SDL_Rect *const srcrect, |
395 |
|
|
const SDL_Surface *const dst, |
396 |
|
|
const SDL_Rect *const dstrect) |
397 |
|
|
{ |
398 |
|
|
/* |
399 |
|
|
* Set up source and destination buffer pointers, then blit |
400 |
|
|
*/ |
401 |
✓✗✓✗
|
661 |
if ((srcrect->w != 0U) && (srcrect->h != 0U)) |
402 |
|
|
{ |
403 |
|
|
SDL_gfxBlitInfo info; |
404 |
|
|
|
405 |
|
|
/* |
406 |
|
|
* Set up the blit information |
407 |
|
|
*/ |
408 |
|
1322 |
info.s_pixels = static_cast<Uint8 *>(src->pixels) + src->offset + |
409 |
|
1322 |
static_cast<Uint16>(srcrect->y) * src->pitch + |
410 |
|
661 |
static_cast<Uint16>(srcrect->x) * src->format->BytesPerPixel; |
411 |
|
661 |
info.s_width = srcrect->w; |
412 |
|
661 |
info.s_height = srcrect->h; |
413 |
|
661 |
info.s_skip = CAST_S32(src->pitch - info.s_width * |
414 |
|
|
src->format->BytesPerPixel); |
415 |
|
1322 |
info.d_pixels = static_cast<Uint8 *>(dst->pixels) + dst->offset + |
416 |
|
1322 |
static_cast<Uint16>(dstrect->y) * dst->pitch + |
417 |
|
661 |
static_cast<Uint16>(dstrect->x) * dst->format->BytesPerPixel; |
418 |
|
661 |
info.d_width = dstrect->w; |
419 |
|
661 |
info.d_height = dstrect->h; |
420 |
|
661 |
info.d_skip = CAST_S32(dst->pitch - info.d_width * |
421 |
|
|
dst->format->BytesPerPixel); |
422 |
|
661 |
info.aux_data = nullptr; |
423 |
|
661 |
info.src = src->format; |
424 |
|
661 |
info.table = nullptr; |
425 |
|
661 |
info.dst = dst->format; |
426 |
|
|
|
427 |
|
|
/* |
428 |
|
|
* Run the actual software blitter |
429 |
|
|
*/ |
430 |
|
661 |
_SDL_gfxBlitBlitterRGBA(&info); |
431 |
|
|
return 1; |
432 |
|
|
} |
433 |
|
|
|
434 |
|
|
return 0; |
435 |
|
|
} |
436 |
|
|
|
437 |
|
661 |
int SDLgfxBlitRGBA(const SDL_Surface *const src, |
438 |
|
|
const SDL_Rect *const srcrect, |
439 |
|
|
SDL_Surface *const dst, |
440 |
|
|
const SDL_Rect *const dstrect) |
441 |
|
|
{ |
442 |
|
|
SDL_Rect sr; |
443 |
|
|
SDL_Rect dr; |
444 |
|
|
int srcx; |
445 |
|
|
int srcy; |
446 |
|
|
int w; |
447 |
|
|
int h; |
448 |
|
|
|
449 |
|
|
/* |
450 |
|
|
* Make sure the surfaces aren't locked |
451 |
|
|
*/ |
452 |
✗✓ |
1322 |
if (src == nullptr || |
453 |
|
661 |
dst == nullptr) |
454 |
|
|
{ |
455 |
|
|
reportAlways("SDLgfxBlitRGBA: passed a NULL surface") |
456 |
|
|
return -1; |
457 |
|
|
} |
458 |
|
|
|
459 |
|
|
/* |
460 |
|
|
* If the destination rectangle is NULL, use the entire dest surface |
461 |
|
|
*/ |
462 |
✓✓ |
661 |
if (dstrect == nullptr) |
463 |
|
|
{ |
464 |
|
9 |
dr.x = 0; |
465 |
|
9 |
dr.y = 0; |
466 |
|
9 |
dr.w = CAST_U16(dst->w); |
467 |
|
9 |
dr.h = CAST_U16(dst->h); |
468 |
|
|
} |
469 |
|
|
else |
470 |
|
|
{ |
471 |
|
652 |
dr = *dstrect; |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
/* |
475 |
|
|
* Clip the source rectangle to the source surface |
476 |
|
|
*/ |
477 |
✓✓ |
661 |
if (srcrect != nullptr) |
478 |
|
|
{ |
479 |
|
|
int maxw; |
480 |
|
|
int maxh; |
481 |
|
|
|
482 |
|
2 |
srcx = srcrect->x; |
483 |
|
2 |
w = srcrect->w; |
484 |
|
2 |
maxw = src->w - srcx; |
485 |
✗✓ |
2 |
if (maxw < w) |
486 |
|
|
w = maxw; |
487 |
|
|
|
488 |
|
2 |
srcy = srcrect->y; |
489 |
|
2 |
h = srcrect->h; |
490 |
|
2 |
maxh = src->h - srcy; |
491 |
✗✓ |
2 |
if (maxh < h) |
492 |
|
|
h = maxh; |
493 |
|
|
} |
494 |
|
|
else |
495 |
|
|
{ |
496 |
|
659 |
srcx = 0; |
497 |
|
659 |
srcy = 0; |
498 |
|
659 |
w = src->w; |
499 |
|
659 |
h = src->h; |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
/* |
503 |
|
|
* Clip the destination rectangle against the clip rectangle |
504 |
|
|
*/ |
505 |
|
661 |
const SDL_Rect *const clip = &dst->clip_rect; |
506 |
|
|
int dx; |
507 |
|
|
int dy; |
508 |
|
|
|
509 |
|
661 |
dx = clip->x - dr.x; |
510 |
✓✓ |
661 |
if (dx > 0) |
511 |
|
|
{ |
512 |
|
130 |
w -= dx; |
513 |
|
130 |
dr.x += dx; |
514 |
|
130 |
srcx += CAST_S16(dx); |
515 |
|
|
} |
516 |
|
661 |
dx = dr.x + w - clip->x - clip->w; |
517 |
✓✓ |
661 |
if (dx > 0) |
518 |
|
130 |
w -= dx; |
519 |
|
|
|
520 |
|
661 |
dy = clip->y - dr.y; |
521 |
✓✓ |
661 |
if (dy > 0) |
522 |
|
|
{ |
523 |
|
130 |
h -= dy; |
524 |
|
130 |
dr.y += dy; |
525 |
|
130 |
srcy += CAST_S16(dy); |
526 |
|
|
} |
527 |
|
661 |
dy = dr.y + h - clip->y - clip->h; |
528 |
✓✓ |
661 |
if (dy > 0) |
529 |
|
130 |
h -= dy; |
530 |
|
|
|
531 |
✓✗ |
661 |
if (w > 0 && h > 0) |
532 |
|
|
{ |
533 |
|
661 |
sr.x = CAST_S16(srcx); |
534 |
|
661 |
sr.y = CAST_S16(srcy); |
535 |
|
661 |
sr.w = dr.w = CAST_U16(w); |
536 |
|
661 |
sr.h = dr.h = CAST_U16(h); |
537 |
|
661 |
return _SDL_gfxBlitRGBACall(src, &sr, dst, &dr); |
538 |
|
|
} |
539 |
|
|
|
540 |
|
|
return 0; |
541 |
|
|
} |
542 |
|
|
|
543 |
|
|
#endif // USE_SDL2 |