hw/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         cpu_to_32wu((uint32_t *)d, (dmask16[(font_data >> 4)] & xorcol) ^ bgcol);
 117         v = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
 118         cpu_to_32wu(((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         cpu_to_32wu(((uint32_t *)d)+0, (dmask4[(font_data >> 6)] & xorcol) ^ bgcol);
 126         cpu_to_32wu(((uint32_t *)d)+1, (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol);
 127         cpu_to_32wu(((uint32_t *)d)+2, (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol);
 128         v = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
 129         cpu_to_32wu(((uint32_t *)d)+3, v);
 130         if (dup9)
 131             ((uint16_t *)d)[8] = v >> (16 * (1 - BIG));
 132         else
 133             ((uint16_t *)d)[8] = bgcol;
 134 #else
 135         ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
 136         ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
 137         ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
 138         ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
 139         ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
 140         ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
 141         ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
 142         v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
 143         ((uint32_t *)d)[7] = v;
 144         if (dup9)
 145             ((uint32_t *)d)[8] = v;
 146         else
 147             ((uint32_t *)d)[8] = bgcol;
 148 #endif
 149         font_ptr += 4;
 150         d += linesize;
 151     } while (--h);
 152 }
 153
 154 /*
 155  * 4 color mode
 156  */
 157 static void glue(vga_draw_line2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 158                                          const uint8_t *s, int width)
 159 {
 160     uint32_t plane_mask, *palette, data, v;
 161     int x;
 162
 163     palette = s1->last_palette;
 164     plane_mask = mask16[s1->ar[0x12] & 0xf];
 165     width >>= 3;
 166     for(x = 0; x < width; x++) {
 167         data = ((uint32_t *)s)[0];
 168         data &= plane_mask;
 169         v = expand2[GET_PLANE(data, 0)];
 170         v |= expand2[GET_PLANE(data, 2)] << 2;
 171         ((PIXEL_TYPE *)d)[0] = palette[v >> 12];
 172         ((PIXEL_TYPE *)d)[1] = palette[(v >> 8) & 0xf];
 173         ((PIXEL_TYPE *)d)[2] = palette[(v >> 4) & 0xf];
 174         ((PIXEL_TYPE *)d)[3] = palette[(v >> 0) & 0xf];
 175
 176         v = expand2[GET_PLANE(data, 1)];
 177         v |= expand2[GET_PLANE(data, 3)] << 2;
 178         ((PIXEL_TYPE *)d)[4] = palette[v >> 12];
 179         ((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
 180         ((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
 181         ((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
 182         d += BPP * 8;
 183         s += 4;
 184     }
 185 }
 186
 187 #if BPP == 1
 188 #define PUT_PIXEL2(d, n, v) ((uint16_t *)d)[(n)] = (v)
 189 #elif BPP == 2
 190 #define PUT_PIXEL2(d, n, v) ((uint32_t *)d)[(n)] = (v)
 191 #else
 192 #define PUT_PIXEL2(d, n, v) \
 193 ((uint32_t *)d)[2*(n)] = ((uint32_t *)d)[2*(n)+1] = (v)
 194 #endif
 195
 196 /*
 197  * 4 color mode, dup2 horizontal
 198  */
 199 static void glue(vga_draw_line2d2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 200                                            const uint8_t *s, int width)
 201 {
 202     uint32_t plane_mask, *palette, data, v;
 203     int x;
 204
 205     palette = s1->last_palette;
 206     plane_mask = mask16[s1->ar[0x12] & 0xf];
 207     width >>= 3;
 208     for(x = 0; x < width; x++) {
 209         data = ((uint32_t *)s)[0];
 210         data &= plane_mask;
 211         v = expand2[GET_PLANE(data, 0)];
 212         v |= expand2[GET_PLANE(data, 2)] << 2;
 213         PUT_PIXEL2(d, 0, palette[v >> 12]);
 214         PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]);
 215         PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]);
 216         PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]);
 217
 218         v = expand2[GET_PLANE(data, 1)];
 219         v |= expand2[GET_PLANE(data, 3)] << 2;
 220         PUT_PIXEL2(d, 4, palette[v >> 12]);
 221         PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
 222         PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
 223         PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
 224         d += BPP * 16;
 225         s += 4;
 226     }
 227 }
 228
 229 /*
 230  * 16 color mode
 231  */
 232 static void glue(vga_draw_line4_, DEPTH)(VGACommonState *s1, uint8_t *d,
 233                                          const uint8_t *s, int width)
 234 {
 235     uint32_t plane_mask, data, v, *palette;
 236     int x;
 237
 238     palette = s1->last_palette;
 239     plane_mask = mask16[s1->ar[0x12] & 0xf];
 240     width >>= 3;
 241     for(x = 0; x < width; x++) {
 242         data = ((uint32_t *)s)[0];
 243         data &= plane_mask;
 244         v = expand4[GET_PLANE(data, 0)];
 245         v |= expand4[GET_PLANE(data, 1)] << 1;
 246         v |= expand4[GET_PLANE(data, 2)] << 2;
 247         v |= expand4[GET_PLANE(data, 3)] << 3;
 248         ((PIXEL_TYPE *)d)[0] = palette[v >> 28];
 249         ((PIXEL_TYPE *)d)[1] = palette[(v >> 24) & 0xf];
 250         ((PIXEL_TYPE *)d)[2] = palette[(v >> 20) & 0xf];
 251         ((PIXEL_TYPE *)d)[3] = palette[(v >> 16) & 0xf];
 252         ((PIXEL_TYPE *)d)[4] = palette[(v >> 12) & 0xf];
 253         ((PIXEL_TYPE *)d)[5] = palette[(v >> 8) & 0xf];
 254         ((PIXEL_TYPE *)d)[6] = palette[(v >> 4) & 0xf];
 255         ((PIXEL_TYPE *)d)[7] = palette[(v >> 0) & 0xf];
 256         d += BPP * 8;
 257         s += 4;
 258     }
 259 }
 260
 261 /*
 262  * 16 color mode, dup2 horizontal
 263  */
 264 static void glue(vga_draw_line4d2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 265                                            const uint8_t *s, int width)
 266 {
 267     uint32_t plane_mask, data, v, *palette;
 268     int x;
 269
 270     palette = s1->last_palette;
 271     plane_mask = mask16[s1->ar[0x12] & 0xf];
 272     width >>= 3;
 273     for(x = 0; x < width; x++) {
 274         data = ((uint32_t *)s)[0];
 275         data &= plane_mask;
 276         v = expand4[GET_PLANE(data, 0)];
 277         v |= expand4[GET_PLANE(data, 1)] << 1;
 278         v |= expand4[GET_PLANE(data, 2)] << 2;
 279         v |= expand4[GET_PLANE(data, 3)] << 3;
 280         PUT_PIXEL2(d, 0, palette[v >> 28]);
 281         PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]);
 282         PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]);
 283         PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]);
 284         PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]);
 285         PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
 286         PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
 287         PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
 288         d += BPP * 16;
 289         s += 4;
 290     }
 291 }
 292
 293 /*
 294  * 256 color mode, double pixels
 295  *
 296  * XXX: add plane_mask support (never used in standard VGA modes)
 297  */
 298 static void glue(vga_draw_line8d2_, DEPTH)(VGACommonState *s1, uint8_t *d,
 299                                            const uint8_t *s, int width)
 300 {
 301     uint32_t *palette;
 302     int x;
 303
 304     palette = s1->last_palette;
 305     width >>= 3;
 306     for(x = 0; x < width; x++) {
 307         PUT_PIXEL2(d, 0, palette[s[0]]);
 308         PUT_PIXEL2(d, 1, palette[s[1]]);
 309         PUT_PIXEL2(d, 2, palette[s[2]]);
 310         PUT_PIXEL2(d, 3, palette[s[3]]);
 311         d += BPP * 8;
 312         s += 4;
 313     }
 314 }
 315
 316 /*
 317  * standard 256 color mode
 318  *
 319  * XXX: add plane_mask support (never used in standard VGA modes)
 320  */
 321 static void glue(vga_draw_line8_, DEPTH)(VGACommonState *s1, uint8_t *d,
 322                                          const uint8_t *s, int width)
 323 {
 324     uint32_t *palette;
 325     int x;
 326
 327     palette = s1->last_palette;
 328     width >>= 3;
 329     for(x = 0; x < width; x++) {
 330         ((PIXEL_TYPE *)d)[0] = palette[s[0]];
 331         ((PIXEL_TYPE *)d)[1] = palette[s[1]];
 332         ((PIXEL_TYPE *)d)[2] = palette[s[2]];
 333         ((PIXEL_TYPE *)d)[3] = palette[s[3]];
 334         ((PIXEL_TYPE *)d)[4] = palette[s[4]];
 335         ((PIXEL_TYPE *)d)[5] = palette[s[5]];
 336         ((PIXEL_TYPE *)d)[6] = palette[s[6]];
 337         ((PIXEL_TYPE *)d)[7] = palette[s[7]];
 338         d += BPP * 8;
 339         s += 8;
 340     }
 341 }
 342
 343 void glue(vga_draw_cursor_line_, DEPTH)(uint8_t *d1,
 344                                         const uint8_t *src1,
 345                                         int poffset, int w,
 346                                         unsigned int color0,
 347                                         unsigned int color1,
 348                                         unsigned int color_xor)
 349 {
 350     const uint8_t *plane0, *plane1;
 351     int x, b0, b1;
 352     uint8_t *d;
 353
 354     d = d1;
 355     plane0 = src1;
 356     plane1 = src1 + poffset;
 357     for(x = 0; x < w; x++) {
 358         b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
 359         b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
 360 #if DEPTH == 8
 361         switch(b0 | (b1 << 1)) {
 362         case 0:
 363             break;
 364         case 1:
 365             d[0] ^= color_xor;
 366             break;
 367         case 2:
 368             d[0] = color0;
 369             break;
 370         case 3:
 371             d[0] = color1;
 372             break;
 373         }
 374 #elif DEPTH == 16
 375         switch(b0 | (b1 << 1)) {
 376         case 0:
 377             break;
 378         case 1:
 379             ((uint16_t *)d)[0] ^= color_xor;
 380             break;
 381         case 2:
 382             ((uint16_t *)d)[0] = color0;
 383             break;
 384         case 3:
 385             ((uint16_t *)d)[0] = color1;
 386             break;
 387         }
 388 #elif DEPTH == 32
 389         switch(b0 | (b1 << 1)) {
 390         case 0:
 391             break;
 392         case 1:
 393             ((uint32_t *)d)[0] ^= color_xor;
 394             break;
 395         case 2:
 396             ((uint32_t *)d)[0] = color0;
 397             break;
 398         case 3:
 399             ((uint32_t *)d)[0] = color1;
 400             break;
 401         }
 402 #else
 403 #error unsupported depth
 404 #endif
 405         d += BPP;
 406     }
 407 }
 408
 409 #endif /* DEPTH != 15 */
 410
 411
 412 /* XXX: optimize */
 413
 414 /*
 415  * 15 bit color
 416  */
 417 static void glue(vga_draw_line15_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 418                                           const uint8_t *s, int width)
 419 {
 420 #if DEPTH == 15 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
 421     memcpy(d, s, width * 2);
 422 #else
 423     int w;
 424     uint32_t v, r, g, b;
 425
 426     w = width;
 427     do {
 428         v = lduw_raw((void *)s);
 429         r = (v >> 7) & 0xf8;
 430         g = (v >> 2) & 0xf8;
 431         b = (v << 3) & 0xf8;
 432         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 433         s += 2;
 434         d += BPP;
 435     } while (--w != 0);
 436 #endif
 437 }
 438
 439 /*
 440  * 16 bit color
 441  */
 442 static void glue(vga_draw_line16_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 443                                           const uint8_t *s, int width)
 444 {
 445 #if DEPTH == 16 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
 446     memcpy(d, s, width * 2);
 447 #else
 448     int w;
 449     uint32_t v, r, g, b;
 450
 451     w = width;
 452     do {
 453         v = lduw_raw((void *)s);
 454         r = (v >> 8) & 0xf8;
 455         g = (v >> 3) & 0xfc;
 456         b = (v << 3) & 0xf8;
 457         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 458         s += 2;
 459         d += BPP;
 460     } while (--w != 0);
 461 #endif
 462 }
 463
 464 /*
 465  * 24 bit color
 466  */
 467 static void glue(vga_draw_line24_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 468                                           const uint8_t *s, int width)
 469 {
 470     int w;
 471     uint32_t r, g, b;
 472
 473     w = width;
 474     do {
 475 #if defined(TARGET_WORDS_BIGENDIAN)
 476         r = s[0];
 477         g = s[1];
 478         b = s[2];
 479 #else
 480         b = s[0];
 481         g = s[1];
 482         r = s[2];
 483 #endif
 484         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 485         s += 3;
 486         d += BPP;
 487     } while (--w != 0);
 488 }
 489
 490 /*
 491  * 32 bit color
 492  */
 493 static void glue(vga_draw_line32_, PIXEL_NAME)(VGACommonState *s1, uint8_t *d,
 494                                           const uint8_t *s, int width)
 495 {
 496 #if DEPTH == 32 && defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN) && !defined(BGR_FORMAT)
 497     memcpy(d, s, width * 4);
 498 #else
 499     int w;
 500     uint32_t r, g, b;
 501
 502     w = width;
 503     do {
 504 #if defined(TARGET_WORDS_BIGENDIAN)
 505         r = s[1];
 506         g = s[2];
 507         b = s[3];
 508 #else
 509         b = s[0];
 510         g = s[1];
 511         r = s[2];
 512 #endif
 513         ((PIXEL_TYPE *)d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
 514         s += 4;
 515         d += BPP;
 516     } while (--w != 0);
 517 #endif
 518 }
 519
 520 #undef PUT_PIXEL2
 521 #undef DEPTH
 522 #undef BPP
 523 #undef PIXEL_TYPE
 524 #undef PIXEL_NAME
 525 #undef BGR_FORMAT