1 /**
2 * @file lv_draw_sw_letter.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_draw_sw.h"
10 #include "../../hal/lv_hal_disp.h"
11 #include "../../misc/lv_math.h"
12 #include "../../misc/lv_assert.h"
13 #include "../../misc/lv_area.h"
14 #include "../../misc/lv_style.h"
15 #include "../../font/lv_font.h"
16 #include "../../core/lv_refr.h"
17
18 /*********************
19 * DEFINES
20 *********************/
21
22 /**********************
23 * TYPEDEFS
24 **********************/
25
26 /**********************
27 * STATIC PROTOTYPES
28 **********************/
29
30 LV_ATTRIBUTE_FAST_MEM static void draw_letter_normal(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,
31 const lv_point_t * pos, lv_font_glyph_dsc_t * g, const uint8_t * map_p);
32
33
34 #if LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX
35 static void draw_letter_subpx(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos,
36 lv_font_glyph_dsc_t * g, const uint8_t * map_p);
37 #endif /*LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX*/
38
39 /**********************
40 * STATIC VARIABLES
41 **********************/
42
43 /**********************
44 * GLOBAL VARIABLES
45 **********************/
46
47 const uint8_t _lv_bpp1_opa_table[2] = {0, 255}; /*Opacity mapping with bpp = 1 (Just for compatibility)*/
48 const uint8_t _lv_bpp2_opa_table[4] = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
49
50 const uint8_t _lv_bpp3_opa_table[8] = {0, 36, 73, 109, /*Opacity mapping with bpp = 3*/
51 146, 182, 219, 255
52 };
53
54 const uint8_t _lv_bpp4_opa_table[16] = {0, 17, 34, 51, /*Opacity mapping with bpp = 4*/
55 68, 85, 102, 119,
56 136, 153, 170, 187,
57 204, 221, 238, 255
58 };
59
60 const uint8_t _lv_bpp8_opa_table[256] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
61 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
62 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
63 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
65 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
66 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
67 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
68 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
69 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
70 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
71 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
72 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
73 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
74 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
75 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
76 };
77
78 /**********************
79 * MACROS
80 **********************/
81
82 /**********************
83 * GLOBAL FUNCTIONS
84 **********************/
85
86 /**
87 * Draw a letter in the Virtual Display Buffer
88 * @param pos_p left-top coordinate of the latter
89 * @param mask_p the letter will be drawn only on this area (truncated to draw_buf area)
90 * @param font_p pointer to font
91 * @param letter a letter to draw
92 * @param color color of letter
93 * @param opa opacity of letter (0..255)
94 */
lv_draw_sw_letter(lv_draw_ctx_t * draw_ctx,const lv_draw_label_dsc_t * dsc,const lv_point_t * pos_p,uint32_t letter)95 void lv_draw_sw_letter(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos_p,
96 uint32_t letter)
97 {
98 lv_font_glyph_dsc_t g;
99 bool g_ret = lv_font_get_glyph_dsc(dsc->font, &g, letter, '\0');
100 if(g_ret == false) {
101 /*Add warning if the dsc is not found
102 *but do not print warning for non printable ASCII chars (e.g. '\n')*/
103 if(letter >= 0x20 &&
104 letter != 0xf8ff && /*LV_SYMBOL_DUMMY*/
105 letter != 0x200c) { /*ZERO WIDTH NON-JOINER*/
106 LV_LOG_WARN("lv_draw_letter: glyph dsc. not found for U+%X", (unsigned int)letter);
107 }
108 return;
109 }
110
111 /*Don't draw anything if the character is empty. E.g. space*/
112 if((g.box_h == 0) || (g.box_w == 0)) return;
113
114 lv_point_t gpos;
115 gpos.x = pos_p->x + g.ofs_x;
116 gpos.y = pos_p->y + (dsc->font->line_height - dsc->font->base_line) - g.box_h - g.ofs_y;
117
118 /*If the letter is completely out of mask don't draw it*/
119 if(gpos.x + g.box_w < draw_ctx->clip_area->x1 ||
120 gpos.x > draw_ctx->clip_area->x2 ||
121 gpos.y + g.box_h < draw_ctx->clip_area->y1 ||
122 gpos.y > draw_ctx->clip_area->y2) {
123 return;
124 }
125
126 const uint8_t * map_p = lv_font_get_glyph_bitmap(g.resolved_font, letter);
127 if(map_p == NULL) {
128 LV_LOG_WARN("lv_draw_letter: character's bitmap not found");
129 return;
130 }
131
132 if(g.resolved_font->subpx) {
133 #if LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX
134 draw_letter_subpx(draw_ctx, dsc, &gpos, &g, map_p);
135 #else
136 LV_LOG_WARN("Can't draw sub-pixel rendered letter because LV_USE_FONT_SUBPX == 0 in lv_conf.h");
137 #endif
138 }
139 else {
140 draw_letter_normal(draw_ctx, dsc, &gpos, &g, map_p);
141 }
142 }
143
144 /**********************
145 * STATIC FUNCTIONS
146 **********************/
147
draw_letter_normal(lv_draw_ctx_t * draw_ctx,const lv_draw_label_dsc_t * dsc,const lv_point_t * pos,lv_font_glyph_dsc_t * g,const uint8_t * map_p)148 LV_ATTRIBUTE_FAST_MEM static void draw_letter_normal(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc,
149 const lv_point_t * pos, lv_font_glyph_dsc_t * g, const uint8_t * map_p)
150 {
151
152 const uint8_t * bpp_opa_table_p;
153 uint32_t bitmask_init;
154 uint32_t bitmask;
155 uint32_t bpp = g->bpp;
156 lv_opa_t opa = dsc->opa;
157 uint32_t shades;
158 if(bpp == 3) bpp = 4;
159
160 switch(bpp) {
161 case 1:
162 bpp_opa_table_p = _lv_bpp1_opa_table;
163 bitmask_init = 0x80;
164 shades = 2;
165 break;
166 case 2:
167 bpp_opa_table_p = _lv_bpp2_opa_table;
168 bitmask_init = 0xC0;
169 shades = 4;
170 break;
171 case 4:
172 bpp_opa_table_p = _lv_bpp4_opa_table;
173 bitmask_init = 0xF0;
174 shades = 16;
175 break;
176 case 8:
177 bpp_opa_table_p = _lv_bpp8_opa_table;
178 bitmask_init = 0xFF;
179 shades = 256;
180 break; /*No opa table, pixel value will be used directly*/
181 default:
182 LV_LOG_WARN("lv_draw_letter: invalid bpp");
183 return; /*Invalid bpp. Can't render the letter*/
184 }
185
186 static lv_opa_t opa_table[256];
187 static lv_opa_t prev_opa = LV_OPA_TRANSP;
188 static uint32_t prev_bpp = 0;
189 if(opa < LV_OPA_MAX) {
190 if(prev_opa != opa || prev_bpp != bpp) {
191 uint32_t i;
192 for(i = 0; i < shades; i++) {
193 opa_table[i] = bpp_opa_table_p[i] == LV_OPA_COVER ? opa : ((bpp_opa_table_p[i] * opa) >> 8);
194 }
195 }
196 bpp_opa_table_p = opa_table;
197 prev_opa = opa;
198 prev_bpp = bpp;
199 }
200
201 int32_t col, row;
202 int32_t box_w = g->box_w;
203 int32_t box_h = g->box_h;
204 int32_t width_bit = box_w * bpp; /*Letter width in bits*/
205
206 /*Calculate the col/row start/end on the map*/
207 int32_t col_start = pos->x >= draw_ctx->clip_area->x1 ? 0 : draw_ctx->clip_area->x1 - pos->x;
208 int32_t col_end = pos->x + box_w <= draw_ctx->clip_area->x2 ? box_w : draw_ctx->clip_area->x2 - pos->x + 1;
209 int32_t row_start = pos->y >= draw_ctx->clip_area->y1 ? 0 : draw_ctx->clip_area->y1 - pos->y;
210 int32_t row_end = pos->y + box_h <= draw_ctx->clip_area->y2 ? box_h : draw_ctx->clip_area->y2 - pos->y + 1;
211
212 /*Move on the map too*/
213 uint32_t bit_ofs = (row_start * width_bit) + (col_start * bpp);
214 map_p += bit_ofs >> 3;
215
216 uint8_t letter_px;
217 uint32_t col_bit;
218 col_bit = bit_ofs & 0x7; /*"& 0x7" equals to "% 8" just faster*/
219
220 lv_draw_sw_blend_dsc_t blend_dsc;
221 lv_memset_00(&blend_dsc, sizeof(blend_dsc));
222 blend_dsc.color = dsc->color;
223 blend_dsc.opa = dsc->opa;
224 blend_dsc.blend_mode = dsc->blend_mode;
225
226 lv_coord_t hor_res = lv_disp_get_hor_res(_lv_refr_get_disp_refreshing());
227 uint32_t mask_buf_size = box_w * box_h > hor_res ? hor_res : box_w * box_h;
228 lv_opa_t * mask_buf = lv_mem_buf_get(mask_buf_size);
229 blend_dsc.mask_buf = mask_buf;
230 int32_t mask_p = 0;
231
232 lv_area_t fill_area;
233 fill_area.x1 = col_start + pos->x;
234 fill_area.x2 = col_end + pos->x - 1;
235 fill_area.y1 = row_start + pos->y;
236 fill_area.y2 = fill_area.y1;
237 #if LV_DRAW_COMPLEX
238 lv_coord_t fill_w = lv_area_get_width(&fill_area);
239 lv_area_t mask_area;
240 lv_area_copy(&mask_area, &fill_area);
241 mask_area.y2 = mask_area.y1 + row_end;
242 bool mask_any = lv_draw_mask_is_any(&mask_area);
243 #endif
244 blend_dsc.blend_area = &fill_area;
245 blend_dsc.mask_area = &fill_area;
246
247 uint32_t col_bit_max = 8 - bpp;
248 uint32_t col_bit_row_ofs = (box_w + col_start - col_end) * bpp;
249
250 for(row = row_start ; row < row_end; row++) {
251 #if LV_DRAW_COMPLEX
252 int32_t mask_p_start = mask_p;
253 #endif
254 bitmask = bitmask_init >> col_bit;
255 for(col = col_start; col < col_end; col++) {
256 /*Load the pixel's opacity into the mask*/
257 letter_px = (*map_p & bitmask) >> (col_bit_max - col_bit);
258 if(letter_px) {
259 mask_buf[mask_p] = bpp_opa_table_p[letter_px];
260 }
261 else {
262 mask_buf[mask_p] = 0;
263 }
264
265 /*Go to the next column*/
266 if(col_bit < col_bit_max) {
267 col_bit += bpp;
268 bitmask = bitmask >> bpp;
269 }
270 else {
271 col_bit = 0;
272 bitmask = bitmask_init;
273 map_p++;
274 }
275
276 /*Next mask byte*/
277 mask_p++;
278 }
279
280 #if LV_DRAW_COMPLEX
281 /*Apply masks if any*/
282 if(mask_any) {
283 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf + mask_p_start, fill_area.x1, fill_area.y2,
284 fill_w);
285 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_TRANSP) {
286 lv_memset_00(mask_buf + mask_p_start, fill_w);
287 }
288 }
289 #endif
290
291 if((uint32_t) mask_p + (col_end - col_start) < mask_buf_size) {
292 fill_area.y2 ++;
293 }
294 else {
295 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
296 lv_draw_sw_blend(draw_ctx, &blend_dsc);
297
298 fill_area.y1 = fill_area.y2 + 1;
299 fill_area.y2 = fill_area.y1;
300 mask_p = 0;
301 }
302
303 col_bit += col_bit_row_ofs;
304 map_p += (col_bit >> 3);
305 col_bit = col_bit & 0x7;
306 }
307
308 /*Flush the last part*/
309 if(fill_area.y1 != fill_area.y2) {
310 fill_area.y2--;
311 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
312 lv_draw_sw_blend(draw_ctx, &blend_dsc);
313 mask_p = 0;
314 }
315
316 lv_mem_buf_release(mask_buf);
317 }
318
319 #if LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX
draw_letter_subpx(lv_draw_ctx_t * draw_ctx,const lv_draw_label_dsc_t * dsc,const lv_point_t * pos,lv_font_glyph_dsc_t * g,const uint8_t * map_p)320 static void draw_letter_subpx(lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos,
321 lv_font_glyph_dsc_t * g, const uint8_t * map_p)
322 {
323 const uint8_t * bpp_opa_table;
324 uint32_t bitmask_init;
325 uint32_t bitmask;
326 uint32_t bpp = g->bpp;
327 lv_opa_t opa = dsc->opa;
328 if(bpp == 3) bpp = 4;
329
330 switch(bpp) {
331 case 1:
332 bpp_opa_table = _lv_bpp1_opa_table;
333 bitmask_init = 0x80;
334 break;
335 case 2:
336 bpp_opa_table = _lv_bpp2_opa_table;
337 bitmask_init = 0xC0;
338 break;
339 case 4:
340 bpp_opa_table = _lv_bpp4_opa_table;
341 bitmask_init = 0xF0;
342 break;
343 case 8:
344 bpp_opa_table = _lv_bpp8_opa_table;
345 bitmask_init = 0xFF;
346 break; /*No opa table, pixel value will be used directly*/
347 default:
348 LV_LOG_WARN("lv_draw_letter: invalid bpp not found");
349 return; /*Invalid bpp. Can't render the letter*/
350 }
351
352 int32_t col, row;
353
354 int32_t box_w = g->box_w;
355 int32_t box_h = g->box_h;
356 int32_t width_bit = box_w * bpp; /*Letter width in bits*/
357
358 /*Calculate the col/row start/end on the map*/
359 int32_t col_start = pos->x >= draw_ctx->clip_area->x1 ? 0 : (draw_ctx->clip_area->x1 - pos->x) * 3;
360 int32_t col_end = pos->x + box_w / 3 <= draw_ctx->clip_area->x2 ? box_w : (draw_ctx->clip_area->x2 - pos->x + 1) * 3;
361 int32_t row_start = pos->y >= draw_ctx->clip_area->y1 ? 0 : draw_ctx->clip_area->y1 - pos->y;
362 int32_t row_end = pos->y + box_h <= draw_ctx->clip_area->y2 ? box_h : draw_ctx->clip_area->y2 - pos->y + 1;
363
364 /*Move on the map too*/
365 int32_t bit_ofs = (row_start * width_bit) + (col_start * bpp);
366 map_p += bit_ofs >> 3;
367
368 uint8_t letter_px;
369 lv_opa_t px_opa;
370 int32_t col_bit;
371 col_bit = bit_ofs & 0x7; /*"& 0x7" equals to "% 8" just faster*/
372
373 lv_area_t map_area;
374 map_area.x1 = col_start / 3 + pos->x;
375 map_area.x2 = col_end / 3 + pos->x - 1;
376 map_area.y1 = row_start + pos->y;
377 map_area.y2 = map_area.y1;
378
379 if(map_area.x2 <= map_area.x1) return;
380
381 lv_coord_t hor_res = lv_disp_get_hor_res(_lv_refr_get_disp_refreshing());
382 int32_t mask_buf_size = box_w * box_h > hor_res ? hor_res : g->box_w * g->box_h;
383 lv_opa_t * mask_buf = lv_mem_buf_get(mask_buf_size);
384 int32_t mask_p = 0;
385
386 lv_color_t * color_buf = lv_mem_buf_get(mask_buf_size * sizeof(lv_color_t));
387
388 int32_t dest_buf_stride = lv_area_get_width(draw_ctx->buf_area);
389 lv_color_t * dest_buf_tmp = draw_ctx->buf;
390
391 /*Set a pointer on draw_buf to the first pixel of the letter*/
392 dest_buf_tmp += ((pos->y - draw_ctx->buf_area->y1) * dest_buf_stride) + pos->x - draw_ctx->buf_area->x1;
393
394 /*If the letter is partially out of mask the move there on draw_buf*/
395 dest_buf_tmp += (row_start * dest_buf_stride) + col_start / 3;
396
397 lv_area_t mask_area;
398 lv_area_copy(&mask_area, &map_area);
399 mask_area.y2 = mask_area.y1 + row_end;
400 bool mask_any = lv_draw_mask_is_any(&map_area);
401 uint8_t font_rgb[3];
402
403 lv_color_t color = dsc->color;
404 #if LV_COLOR_16_SWAP == 0
405 uint8_t txt_rgb[3] = {color.ch.red, color.ch.green, color.ch.blue};
406 #else
407 uint8_t txt_rgb[3] = {color.ch.red, (color.ch.green_h << 3) + color.ch.green_l, color.ch.blue};
408 #endif
409
410 lv_draw_sw_blend_dsc_t blend_dsc;
411 lv_memset_00(&blend_dsc, sizeof(&blend_dsc));
412 blend_dsc.blend_area = &map_area;
413 blend_dsc.mask_area = &map_area;
414 blend_dsc.src_buf = color_buf;
415 blend_dsc.mask_buf = mask_buf;
416 blend_dsc.opa = opa;
417 blend_dsc.blend_mode = dsc->blend_mode;
418
419 for(row = row_start ; row < row_end; row++) {
420 uint32_t subpx_cnt = 0;
421 bitmask = bitmask_init >> col_bit;
422 int32_t mask_p_start = mask_p;
423
424 for(col = col_start; col < col_end; col++) {
425 /*Load the pixel's opacity into the mask*/
426 letter_px = (*map_p & bitmask) >> (8 - col_bit - bpp);
427 if(letter_px != 0) {
428 if(opa >= LV_OPA_MAX) {
429 px_opa = bpp == 8 ? letter_px : bpp_opa_table[letter_px];
430 }
431 else {
432 px_opa = bpp == 8 ? (uint32_t)((uint32_t)letter_px * opa) >> 8
433 : (uint32_t)((uint32_t)bpp_opa_table[letter_px] * opa) >> 8;
434 }
435 }
436 else {
437 px_opa = 0;
438 }
439
440 font_rgb[subpx_cnt] = px_opa;
441
442 subpx_cnt ++;
443 if(subpx_cnt == 3) {
444 subpx_cnt = 0;
445
446 lv_color_t res_color;
447 #if LV_COLOR_16_SWAP == 0
448 uint8_t bg_rgb[3] = {dest_buf_tmp->ch.red, dest_buf_tmp->ch.green, dest_buf_tmp->ch.blue};
449 #else
450 uint8_t bg_rgb[3] = {dest_buf_tmp->ch.red,
451 (dest_buf_tmp->ch.green_h << 3) + dest_buf_tmp->ch.green_l,
452 dest_buf_tmp->ch.blue
453 };
454 #endif
455
456 #if LV_FONT_SUBPX_BGR
457 res_color.ch.blue = (uint32_t)((uint32_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
458 res_color.ch.red = (uint32_t)((uint32_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
459 #else
460 res_color.ch.red = (uint32_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
461 res_color.ch.blue = (uint32_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
462 #endif
463
464 #if LV_COLOR_16_SWAP == 0
465 res_color.ch.green = (uint32_t)((uint32_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
466 #else
467 uint8_t green = (uint32_t)((uint32_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
468 res_color.ch.green_h = green >> 3;
469 res_color.ch.green_l = green & 0x7;
470 #endif
471
472 #if LV_COLOR_DEPTH == 32
473 res_color.ch.alpha = 0xff;
474 #endif
475
476 if(font_rgb[0] == 0 && font_rgb[1] == 0 && font_rgb[2] == 0) mask_buf[mask_p] = LV_OPA_TRANSP;
477 else mask_buf[mask_p] = LV_OPA_COVER;
478 color_buf[mask_p] = res_color;
479
480 /*Next mask byte*/
481 mask_p++;
482 dest_buf_tmp++;
483 }
484
485 /*Go to the next column*/
486 if(col_bit < (int32_t)(8 - bpp)) {
487 col_bit += bpp;
488 bitmask = bitmask >> bpp;
489 }
490 else {
491 col_bit = 0;
492 bitmask = bitmask_init;
493 map_p++;
494 }
495 }
496
497 /*Apply masks if any*/
498 if(mask_any) {
499 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf + mask_p_start, map_area.x1, map_area.y2,
500 lv_area_get_width(&map_area));
501 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_TRANSP) {
502 lv_memset_00(mask_buf + mask_p_start, lv_area_get_width(&map_area));
503 }
504 }
505
506 if((int32_t) mask_p + (col_end - col_start) < mask_buf_size) {
507 map_area.y2 ++;
508 }
509 else {
510 lv_draw_sw_blend(draw_ctx, &blend_dsc);
511
512 map_area.y1 = map_area.y2 + 1;
513 map_area.y2 = map_area.y1;
514 mask_p = 0;
515 }
516
517 col_bit += ((box_w - col_end) + col_start) * bpp;
518
519 map_p += (col_bit >> 3);
520 col_bit = col_bit & 0x7;
521
522 /*Next row in draw_buf*/
523 dest_buf_tmp += dest_buf_stride - (col_end - col_start) / 3;
524 }
525
526 /*Flush the last part*/
527 if(map_area.y1 != map_area.y2) {
528 map_area.y2--;
529 lv_draw_sw_blend(draw_ctx, &blend_dsc);
530 }
531
532 lv_mem_buf_release(mask_buf);
533 lv_mem_buf_release(color_buf);
534 }
535 #endif /*LV_DRAW_COMPLEX && LV_USE_FONT_SUBPX*/
536
537
