hw/display/vga_template.h

   1 /*
   2  * QEMU VGA Emulator templates
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #if DEPTH == 8
  26 #define BPP 1
  27 #define PIXEL_TYPE uint8_t
  28 #elif DEPTH == 15 || DEPTH == 16
  29 #define BPP 2
  30 #define PIXEL_TYPE uint16_t
  31 #elif DEPTH == 32
  32 #define BPP 4
  33 #define PIXEL_TYPE uint32_t
  34 #else
  35 #error unsupport depth
  36 #endif
  37
  38 #ifdef BGR_FORMAT
  39 #define PIXEL_NAME glue(DEPTH, bgr)
  40 #else
  41 #define PIXEL_NAME DEPTH
  42 #endif /* BGR_FORMAT */
  43
  44 #if DEPTH != 15 && !defined(BGR_FORMAT)
  45
  46 static inline void glue(vga_draw_glyph_line_, DEPTH)(uint8_t *d,
  47                                                      uint32_t font_data,
  48                                                      uint32_t xorcol,
  49                                                      uint32_t bgcol)
  50 {
  51 #if BPP == 1
  52         ((uint32_t *)d)[0] = (dmask16[(font_data >> 4)] & xorcol) ^ bgcol;
  53         ((uint32_t *)d)[1] = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
  54 #elif BPP == 2
  55         ((uint32_t *)d)[0] = (dmask4[(font_data >> 6)] & xorcol) ^ bgcol;
  56         ((uint32_t *)d)[1] = (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol;
  57         ((uint32_t *)d)[2] = (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol;
  58         ((uint32_t *)d)[3] = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
  59 #else
  60         ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
  61         ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
  62         ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
  63         ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
  64         ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
  65         ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
  66         ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
  67         ((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
  68 #endif
  69 }
  70
  71 static void glue(vga_draw_glyph8_, DEPTH)(uint8_t *d, int linesize,
  72                                           const uint8_t *font_ptr, int h,
  73                                           uint32_t fgcol, uint32_t bgcol)
  74 {
  75     uint32_t font_data, xorcol;
  76
  77     xorcol = bgcol ^ fgcol;
  78     do {
  79         font_data = font_ptr[0];
  80         glue(vga_draw_glyph_line_, DEPTH)(d, font_data, xorcol, bgcol);
  81         font_ptr += 4;
  82         d += linesize;
  83     } while (--h);
  84 }
  85
  86 static void glue(vga_draw_glyph16_, DEPTH)(uint8_t *d, int linesize,
  87                                           const uint8_t *font_ptr, int h,
  88                                           uint32_t fgcol, uint32_t bgcol)
  89 {
  90     uint32_t font_data, xorcol;
  91
  92     xorcol = bgcol ^ fgcol;
  93     do {
  94         font_data = font_ptr[0];
  95         glue(vga_draw_glyph_line_, DEPTH)(d,
  96                                           expand4to8[font_data >> 4],
  97                                           xorcol, bgcol);
  98         glue(vga_draw_glyph_line_, DEPTH)(d + 8 * BPP,
  99                                           expand4to8[font_data & 0x0f],
 100                                           xorcol, bgcol);
 101         font_ptr += 4;
 102         d += linesize;
 103     } while (--h);
 104 }
 105
 106 static void glue(vga_draw_glyph9_, DEPTH)(uint8_t *d, int linesize,
 107                                           const uint8_t *font_ptr, int h,
 108                                           uint32_t fgcol, uint32_t bgcol, int dup9)
 109 {
 110     uint32_t font_data, xorcol, v;
 111
 112     xorcol = bgcol ^ fgcol;
 113     do {
 114         font_data = font_ptr[0];
 115 #if BPP == 1
 116         stl_p((uint32_t *)d, (dmask16[(font_data >> 4)] & xorcol) ^ bgcol);
 117         v = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
 118         stl_p(((uint32_t *)d)+1, v);
 119         if (dup9)
 120             ((uint8_t *)d)[8] = v >> (24 * (1 - BIG));
 121         else
 122             ((uint8_t *)d)[8] = bgcol;
 123
 124 #elif BPP == 2
 125         stl_p(((uint32_t *)d)+0, (dmask4[(font_data >> 6)] & xorcol) ^ bgcol);
 126         stl_p(((uint32_t *)d)+1,
 127               (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol);
 128         stl_p(((uint32_t *)d)+2,
 129               (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol);
 130         v = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
 131         stl_p(((uint32_t *)d)+3, v);
 132         if (dup9)
 133             ((uint16_t *)d)[8] = v >> (16 * (1 - BIG));
 134         else
 135             ((uint16_t *)d)[8] = bgcol;
 136 #else
 137         ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
 138         ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
 139         ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
 140         ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
 141         ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
 142         ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
 143         ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
 144         v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
 145         ((uint32_t *)d)[7] = v;
 146         if (dup9)
 147             ((uint32_t *)d)[8] = v;
 148         else
 149             ((uint32_t *)d)[8] = bgcol;
 150 #endif
 151         font_ptr += 4;
 152         d += linesize;
 153     } while (--h);
 154 }
 155
 156 /*
 157  * 4 color mode
 158  */
 159 static void glue(vga_draw_line2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 160                                          const uint8_t *s, int width)
 161 {
 162     uint32_t plane_mask, *palette, data, v;
 163     int x;
 164
 165     palette = s1->last_palette;
 166     plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
 167     width >>= 3;
 168     for(x = 0; x < width; x++) {
 169         data = ((uint32_t *)s)[0];
 170         data &= plane_mask;
 171         v = expand2[GET_PLANE(data, 0)];
 172         v |= expand2[GET_PLANE(data, 2)] << 2;
 173         ((PIXEL_TYPE *)d)[0] = palette[v >> 12];
 174         ((PIXEL_TYPE *)d)[1] = palette[(v >> 8) & 0xf];
 175         ((PIXEL_TYPE *)d)[2] = palette[(v >> 4) & 0xf];
 176         ((PIXEL_TYPE *)d)[3] = palette[(v >> 0) & 0xf];
 177
 178         v = expand2[GET_PLANE(data, 1)];
 179         v |= expand2[GET_PLANE(data, 3)] << 2;
 180         ((PIXEL_TYPE *)d)[4] = palette[v >> 12];
 181         ((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
 182         ((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
 183         ((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
 184         d += BPP * 8;
 185         s += 4;
 186     }
 187 }
 188
 189 #if BPP == 1
 190 #define PUT_PIXEL2(d, n, v) ((uint16_t *)d)[(n)] = (v)
 191 #elif BPP == 2
 192 #define PUT_PIXEL2(d, n, v) ((uint32_t *)d)[(n)] = (v)
 193 #else
 194 #define PUT_PIXEL2(d, n, v) \
 195 ((uint32_t *)d)[2*(n)] = ((uint32_t *)d)[2*(n)+1] = (v)
 196 #endif
 197
 198 /*
 199  * 4 color mode, dup2 horizontal
 200  */
 201 static void glue(vga_draw_line2d2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 202                                            const uint8_t *s, int width)
 203 {
 204     uint32_t plane_mask, *palette, data, v;
 205     int x;
 206
 207     palette = s1->last_palette;
 208     plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
 209     width >>= 3;
 210     for(x = 0; x < width; x++) {
 211         data = ((uint32_t *)s)[0];
 212         data &= plane_mask;
 213         v = expand2[GET_PLANE(data, 0)];
 214         v |= expand2[GET_PLANE(data, 2)] << 2;
 215         PUT_PIXEL2(d, 0, palette[v >> 12]);
 216         PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]);
 217         PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]);
 218         PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]);
 219
 220         v = expand2[GET_PLANE(data, 1)];
 221         v |= expand2[GET_PLANE(data, 3)] << 2;
 222         PUT_PIXEL2(d, 4, palette[v >> 12]);
 223         PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
 224         PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
 225         PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
 226         d += BPP * 16;
 227         s += 4;
 228     }
 229 }
 230
 231 /*
 232  * 16 color mode
 233  */
 234 static void glue(vga_draw_line4_, DEPTH)(VGACommonState *s1, uint8_t *d,
 235                                          const uint8_t *s, int width)
 236 {
 237     uint32_t plane_mask, data, v, *palette;
 238     int x;
 239
 240     palette = s1->last_palette;
 241     plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
 242     width >>= 3;
 243     for(x = 0; x < width; x++) {
 244         data = ((uint32_t *)s)[0];
 245         data &= plane_mask;
 246         v = expand4[GET_PLANE(data, 0)];
 247         v |= expand4[GET_PLANE(data, 1)] << 1;
 248         v |= expand4[GET_PLANE(data, 2)] << 2;
 249         v |= expand4[GET_PLANE(data, 3)] << 3;
 250         ((PIXEL_TYPE *)d)[0] = palette[v >> 28];
 251         ((PIXEL_TYPE *)d)[1] = palette[(v >> 24) & 0xf];
 252         ((PIXEL_TYPE *)d)[2] = palette[(v >> 20) & 0xf];
 253         ((PIXEL_TYPE *)d)[3] = palette[(v >> 16) & 0xf];
 254         ((PIXEL_TYPE *)d)[4] = palette[(v >> 12) & 0xf];
 255         ((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
 256         ((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
 257         ((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
 258         d += BPP * 8;
 259         s += 4;
 260     }
 261 }
 262
 263 /*
 264  * 16 color mode, dup2 horizontal
 265  */
 266 static void glue(vga_draw_line4d2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 267                                            const uint8_t *s, int width)
 268 {
 269     uint32_t plane_mask, data, v, *palette;
 270     int x;
 271
 272     palette = s1->last_palette;
 273     plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
 274     width >>= 3;
 275     for(x = 0; x < width; x++) {
 276         data = ((uint32_t *)s)[0];
 277         data &= plane_mask;
 278         v = expand4[GET_PLANE(data, 0)];
 279         v |= expand4[GET_PLANE(data, 1)] << 1;
 280         v |= expand4[GET_PLANE(data, 2)] << 2;
 281         v |= expand4[GET_PLANE(data, 3)] << 3;
 282         PUT_PIXEL2(d, 0, palette[v >> 28]);
 283         PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]);
 284         PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]);
 285         PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]);
 286         PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]);
 287         PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
 288         PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
 289         PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
 290         d += BPP * 16;
 291         s += 4;
 292     }
 293 }
 294
 295 /*
 296  * 256 color mode, double pixels
 297  *
 298  * XXX: add plane_mask support (never used in standard VGA modes)
 299  */
 300 static void glue(vga_draw_line8d2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 301                                            const uint8_t *s, int width)
 302 {
 303     uint32_t *palette;
 304     int x;
 305
 306     palette = s1->last_palette;
 307     width >>= 3;
 308     for(x = 0; x < width; x++) {
 309         PUT_PIXEL2(d, 0, palette[s[0]]);
 310         PUT_PIXEL2(d, 1, palette[s[1]]);
 311         PUT_PIXEL2(d, 2, palette[s[2]]);
 312         PUT_PIXEL2(d, 3, palette[s[3]]);
 313         d += BPP * 8;
 314         s += 4;
 315     }
 316 }
 317
 318 /*
 319  * standard 256 color mode
 320  *
 321  * XXX: add plane_mask support (never used in standard VGA modes)
 322  */
 323 static void glue(vga_draw_line8_, DEPTH)(VGACommonState *s1, uint8_t *d,
 324                                          const uint8_t *s, int width)
 325 {
 326     uint32_t *palette;
 327     int x;
 328
 329     palette = s1->last_palette;
 330     width >>= 3;
 331     for(x = 0; x < width; x++) {
 332         ((PIXEL_TYPE *)d)[0] = palette[s[0]];
 333         ((PIXEL_TYPE *)d)[1] = palette[s[1]];
 334         ((PIXEL_TYPE *)d)[2] = palette[s[2]];
 335         ((PIXEL_TYPE *)d)[3] = palette[s[3]];
 336         ((PIXEL_TYPE *)d)[4] = palette[s[4]];
 337         ((PIXEL_TYPE *)d)[5] = palette[s[5]];
 338         ((PIXEL_TYPE *)d)[6] = palette[s[6]];
 339         ((PIXEL_TYPE *)d)[7] = palette[s[7]];
 340         d += BPP * 8;
 341         s += 8;
 342     }
 343 }
 344
 345 #endif /* DEPTH != 15 */
 346
 347
 348 /* XXX: optimize */
 349
 350 /*
 351  * 15 bit color
 352  */
 353 static void glue(vga_draw_line15_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 354                                           const uint8_t *s, int width)
 355 {
 356 #if DEPTH == 15 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
 357     memcpy(d, s, width * 2);
 358 #else
 359     int w;
 360     uint32_t v, r, g, b;
 361
 362     w = width;
 363     do {
 364         v = lduw_raw((void *)s);
 365         r = (v >> 7) & 0xf8;
 366         g = (v >> 2) & 0xf8;
 367         b = (v << 3) & 0xf8;
 368         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 369         s += 2;
 370         d += BPP;
 371     } while (--w != 0);
 372 #endif
 373 }
 374
 375 /*
 376  * 16 bit color
 377  */
 378 static void glue(vga_draw_line16_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 379                                           const uint8_t *s, int width)
 380 {
 381 #if DEPTH == 16 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
 382     memcpy(d, s, width * 2);
 383 #else
 384     int w;
 385     uint32_t v, r, g, b;
 386
 387     w = width;
 388     do {
 389         v = lduw_raw((void *)s);
 390         r = (v >> 8) & 0xf8;
 391         g = (v >> 3) & 0xfc;
 392         b = (v << 3) & 0xf8;
 393         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 394         s += 2;
 395         d += BPP;
 396     } while (--w != 0);
 397 #endif
 398 }
 399
 400 /*
 401  * 24 bit color
 402  */
 403 static void glue(vga_draw_line24_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 404                                           const uint8_t *s, int width)
 405 {
 406     int w;
 407     uint32_t r, g, b;
 408
 409     w = width;
 410     do {
 411 #if defined(TARGET_WORDS_BIGENDIAN)
 412         r = s[0];
 413         g = s[1];
 414         b = s[2];
 415 #else
 416         b = s[0];
 417         g = s[1];
 418         r = s[2];
 419 #endif
 420         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 421         s += 3;
 422         d += BPP;
 423     } while (--w != 0);
 424 }
 425
 426 /*
 427  * 32 bit color
 428  */
 429 static void glue(vga_draw_line32_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 430                                           const uint8_t *s, int width)
 431 {
 432 #if DEPTH == 32 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) && !defined(BGR_FORMAT)
 433     memcpy(d, s, width * 4);
 434 #else
 435     int w;
 436     uint32_t r, g, b;
 437
 438     w = width;
 439     do {
 440 #if defined(TARGET_WORDS_BIGENDIAN)
 441         r = s[1];
 442         g = s[2];
 443         b = s[3];
 444 #else
 445         b = s[0];
 446         g = s[1];
 447         r = s[2];
 448 #endif
 449         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 450         s += 4;
 451         d += BPP;
 452     } while (--w != 0);
 453 #endif
 454 }
 455
 456 #undef PUT_PIXEL2
 457 #undef DEPTH
 458 #undef BPP
 459 #undef PIXEL_TYPE
 460 #undef PIXEL_NAME
 461 #undef BGR_FORMAT