| cff531af |
1 | /*\r |
| 2 | * assembly optimized versions of most funtions from draw2.c\r |
| 3 | * (C) notaz, 2006-2008\r |
| 7bf552b5 |
4 | * (C) irixxxx, 2019-2023\r |
| cff531af |
5 | *\r |
| 6 | * This work is licensed under the terms of MAME license.\r |
| 7 | * See COPYING file in the top-level directory.\r |
| 8 | *\r |
| 9 | * this is highly specialized, be careful if changing related C code!\r |
| 959ea39b |
10 | *\r |
| 11 | * NB: this only deals with buffers having line width at 328\r |
| cff531af |
12 | */\r |
| cc68a136 |
13 | \r |
| d40a5af4 |
14 | #include "pico_int_offs.h"\r |
| cc68a136 |
15 | \r |
| 959ea39b |
16 | .equ PDRAW_INTERLACE, (1<<3)\r |
| 17 | .equ PDRAW_32_COLS, (1<<8)\r |
| 18 | .equ PDRAW_BORDER_32, (1<<9)\r |
| 19 | .equ PDRAW_30_ROWS, (1<<11)\r |
| 20 | \r |
| cc68a136 |
21 | @ define these constants in your include file:\r |
| 22 | @ .equiv START_ROW, 1\r |
| 23 | @ .equiv END_ROW, 27\r |
| 24 | @ one row means 8 pixels. If above example was used, (27-1)*8=208 lines would be rendered.\r |
| f62850ba |
25 | #ifndef START_ROW\r |
| 26 | #define START_ROW 0\r |
| 27 | #endif\r |
| 28 | #ifndef END_ROW\r |
| 29 | #define END_ROW 28\r |
| 30 | #endif\r |
| 31 | \r |
| 32 | .text\r |
| 33 | .align 2\r |
| cc68a136 |
34 | \r |
| 959ea39b |
35 | @ void BackFillFull(unsigned char *dst, int reg7, int lwidth)\r |
| 98a27142 |
36 | \r |
| 37 | .global BackFillFull\r |
| cc68a136 |
38 | \r |
| 39 | BackFillFull:\r |
| 959ea39b |
40 | stmfd sp!, {r4-r10,lr}\r |
| 41 | \r |
| 42 | sub r10,r2, #320 @ unused bytes in a line\r |
| 43 | add lr, r0, #8 @ 8 px overlap area at start of line\r |
| 44 | add lr, lr, r2, lsl #3 @ 8 lines overlap area at top\r |
| cc68a136 |
45 | \r |
| 98a27142 |
46 | mov r0, r1, lsl #26\r |
| ea8c405f |
47 | mov r0, r0, lsr #26\r |
| cc68a136 |
48 | \r |
| cc68a136 |
49 | orr r0, r0, r0, lsl #8\r |
| 50 | orr r0, r0, r0, lsl #16\r |
| 51 | \r |
| 52 | mov r1, r0 @ 25 opcodes wasted?\r |
| 53 | mov r2, r0\r |
| 54 | mov r3, r0\r |
| 55 | mov r4, r0\r |
| 56 | mov r5, r0\r |
| 57 | mov r6, r0\r |
| 58 | mov r7, r0\r |
| 59 | mov r8, r0\r |
| 60 | mov r9, r0\r |
| 61 | \r |
| 62 | mov r12, #(END_ROW-START_ROW)*8\r |
| 63 | \r |
| 64 | @ go go go!\r |
| 65 | .bff_loop:\r |
| cc68a136 |
66 | subs r12, r12, #1\r |
| 67 | \r |
| 68 | stmia lr!, {r0-r9} @ 10*4*8\r |
| 69 | stmia lr!, {r0-r9}\r |
| 70 | stmia lr!, {r0-r9}\r |
| 71 | stmia lr!, {r0-r9}\r |
| 72 | stmia lr!, {r0-r9}\r |
| 73 | stmia lr!, {r0-r9}\r |
| 74 | stmia lr!, {r0-r9}\r |
| 75 | stmia lr!, {r0-r9}\r |
| 76 | \r |
| 959ea39b |
77 | add lr, lr, r10 @ skip unused rest of line\r |
| cc68a136 |
78 | bne .bff_loop\r |
| 79 | \r |
| 959ea39b |
80 | ldmfd sp!, {r4-r10,lr}\r |
| 98a27142 |
81 | bx lr\r |
| cc68a136 |
82 | \r |
| 83 | .pool\r |
| 84 | \r |
| 85 | @ -------- some macros --------\r |
| 86 | \r |
| cf07a88d |
87 | @ helpers\r |
| 88 | .macro add_c24 d s c\r |
| 89 | add \d, \s, #(\c & 0x00ff00)\r |
| 90 | .if \c & 0x0000ff\r |
| 91 | add \d, \d, #(\c & 0x0000ff)\r |
| 92 | .endif\r |
| 93 | .if \c & 0xff0000\r |
| 94 | add \d, \d, #(\c & 0xff0000)\r |
| 95 | .endif\r |
| 96 | .endm\r |
| cc68a136 |
97 | \r |
| cc68a136 |
98 | @ TileLineSinglecol (r1=pdest, r2=pixels8, r3=pal) r4: scratch, r0: pixels8_old\r |
| 99 | .macro TileLineSinglecol notsinglecol=0\r |
| 100 | and r2, r2, #0xf @ #0x0000000f\r |
| 101 | .if !\notsinglecol\r |
| 102 | cmp r2, r0, lsr #28 @ if these don't match,\r |
| 103 | bicne r9, r9, #2 @ it is a sign that whole tile is not singlecolor (only it's lines may be)\r |
| 104 | .endif\r |
| 105 | orr r4, r3, r2\r |
| 106 | orr r4, r4, r4, lsl #8\r |
| 107 | \r |
| 108 | tst r1, #1 @ not aligned?\r |
| 109 | strneb r4, [r1], #1\r |
| 110 | streqh r4, [r1], #2\r |
| 111 | strh r4, [r1], #2\r |
| 112 | strh r4, [r1], #2\r |
| 113 | strh r4, [r1], #2\r |
| 114 | strneb r4, [r1], #1 @ have a remaining unaligned pixel?\r |
| 115 | sub r1, r1, #8\r |
| 116 | .if !\notsinglecol\r |
| 117 | mov r0, #0xf\r |
| 118 | orr r0, r0, r2, lsl #28 @ we will need the old palindex later\r |
| 119 | .endif\r |
| 120 | .endm\r |
| 121 | \r |
| 122 | @ TileNorm (r1=pdest, r2=pixels8, r3=pal) r0,r4: scratch\r |
| 123 | .macro TileLineNorm\r |
| 124 | ands r4, r0, r2, lsr #12 @ #0x0000f000\r |
| 125 | orrne r4, r3, r4\r |
| 126 | strneb r4, [r1]\r |
| 127 | ands r4, r0, r2, lsr #8 @ #0x00000f00\r |
| 128 | orrne r4, r3, r4\r |
| 129 | strneb r4, [r1,#1]\r |
| 130 | ands r4, r0, r2, lsr #4 @ #0x000000f0\r |
| 131 | orrne r4, r3, r4\r |
| 132 | strneb r4, [r1,#2]\r |
| 133 | ands r4, r0, r2 @ #0x0000000f\r |
| 134 | orrne r4, r3, r4\r |
| 135 | strneb r4, [r1,#3]\r |
| 136 | ands r4, r0, r2, lsr #28 @ #0xf0000000\r |
| 137 | orrne r4, r3, r4\r |
| 138 | strneb r4, [r1,#4]\r |
| 139 | ands r4, r0, r2, lsr #24 @ #0x0f000000\r |
| 140 | orrne r4, r3, r4\r |
| 141 | strneb r4, [r1,#5]\r |
| 142 | ands r4, r0, r2, lsr #20 @ #0x00f00000\r |
| 143 | orrne r4, r3, r4\r |
| 144 | strneb r4, [r1,#6]\r |
| 145 | ands r4, r0, r2, lsr #16 @ #0x000f0000\r |
| 146 | orrne r4, r3, r4\r |
| 147 | strneb r4, [r1,#7]\r |
| 148 | .endm\r |
| 149 | \r |
| 150 | @ TileFlip (r1=pdest, r2=pixels8, r3=pal) r0,r4: scratch\r |
| 151 | .macro TileLineFlip\r |
| 152 | ands r4, r0, r2, lsr #16 @ #0x000f0000\r |
| 153 | orrne r4, r3, r4\r |
| 154 | strneb r4, [r1]\r |
| 155 | ands r4, r0, r2, lsr #20 @ #0x00f00000\r |
| 156 | orrne r4, r3, r4\r |
| 157 | strneb r4, [r1,#1]\r |
| 158 | ands r4, r0, r2, lsr #24 @ #0x0f000000\r |
| 159 | orrne r4, r3, r4\r |
| 160 | strneb r4, [r1,#2]\r |
| 161 | ands r4, r0, r2, lsr #28 @ #0xf0000000\r |
| 162 | orrne r4, r3, r4\r |
| 163 | strneb r4, [r1,#3]\r |
| 164 | ands r4, r0, r2 @ #0x0000000f\r |
| 165 | orrne r4, r3, r4\r |
| 166 | strneb r4, [r1,#4]\r |
| 167 | ands r4, r0, r2, lsr #4 @ #0x000000f0\r |
| 168 | orrne r4, r3, r4\r |
| 169 | strneb r4, [r1,#5]\r |
| 170 | ands r4, r0, r2, lsr #8 @ #0x00000f00\r |
| 171 | orrne r4, r3, r4\r |
| 172 | strneb r4, [r1,#6]\r |
| 173 | ands r4, r0, r2, lsr #12 @ #0x0000f000\r |
| 174 | orrne r4, r3, r4\r |
| 175 | strneb r4, [r1,#7]\r |
| 176 | .endm\r |
| 177 | \r |
| 178 | @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=Pico.vram) r2,r4,r7: scratch, r0=0xf\r |
| 179 | .macro Tile hflip vflip\r |
| 180 | mov r7, r9, lsl #13 @ r9=code<<8; addr=(code&0x7ff)<<4;\r |
| 181 | add r7, r10, r7, lsr #16\r |
| 182 | orr r9, r9, #3 @ emptytile=singlecolor=1, r9 must be <code_16> 00000xxx\r |
| 183 | .if \vflip\r |
| 184 | @ we read tilecodes in reverse order if we have vflip\r |
| 185 | add r7, r7, #8*4\r |
| 186 | .endif\r |
| 187 | @ loop through 8 lines\r |
| 188 | orr r9, r9, #(7<<24)\r |
| 189 | b 1f @ loop_enter\r |
| 190 | \r |
| 191 | 0: @ singlecol_loop\r |
| 192 | subs r9, r9, #(1<<24)\r |
| 193 | add r1, r1, #328 @ set pointer to next line\r |
| 194 | bmi 8f @ loop_exit with r0 restore\r |
| 195 | 1:\r |
| 196 | .if \vflip\r |
| 197 | ldr r2, [r7, #-4]! @ pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r |
| 198 | .else\r |
| 199 | ldr r2, [r7], #4\r |
| 200 | .endif\r |
| 201 | tst r2, r2\r |
| 202 | beq 2f @ empty line\r |
| 203 | bic r9, r9, #1\r |
| 204 | cmp r2, r2, ror #4\r |
| 205 | bne 3f @ not singlecolor\r |
| 206 | TileLineSinglecol\r |
| 207 | b 0b\r |
| 208 | \r |
| 209 | 2:\r |
| 210 | bic r9, r9, #2\r |
| 211 | 2: @ empty_loop\r |
| 212 | subs r9, r9, #(1<<24)\r |
| 213 | add r1, r1, #328 @ set pointer to next line\r |
| 214 | bmi 8f @ loop_exit with r0 restore\r |
| 215 | .if \vflip\r |
| 216 | ldr r2, [r7, #-4]! @ next pack\r |
| 217 | .else\r |
| 218 | ldr r2, [r7], #4\r |
| 219 | .endif\r |
| 220 | mov r0, #0xf @ singlecol_loop might have messed r0\r |
| 221 | tst r2, r2\r |
| 222 | beq 2b\r |
| 223 | \r |
| 224 | bic r9, r9, #3 @ if we are here, it means we have empty and not empty line\r |
| 225 | b 5f\r |
| 226 | \r |
| 227 | 3: @ not empty, not singlecol\r |
| 228 | mov r0, #0xf\r |
| 229 | bic r9, r9, #3\r |
| 230 | b 6f\r |
| 231 | \r |
| 232 | 4: @ not empty, not singlecol loop\r |
| 233 | subs r9, r9, #(1<<24)\r |
| 234 | add r1, r1, #328 @ set pointer to next line\r |
| 235 | bmi 9f @ loop_exit\r |
| 236 | .if \vflip\r |
| 237 | ldr r2, [r7, #-4]! @ next pack\r |
| 238 | .else\r |
| 239 | ldr r2, [r7], #4\r |
| 240 | .endif\r |
| 241 | tst r2, r2\r |
| 242 | beq 4b @ empty line\r |
| 243 | 5:\r |
| 244 | cmp r2, r2, ror #4\r |
| 245 | beq 7f @ singlecolor line\r |
| 246 | 6:\r |
| 247 | .if \hflip\r |
| 248 | TileLineFlip\r |
| 249 | .else\r |
| 250 | TileLineNorm\r |
| 251 | .endif\r |
| 252 | b 4b\r |
| 253 | 7:\r |
| 254 | TileLineSinglecol 1\r |
| 255 | b 4b\r |
| 256 | \r |
| 257 | 8:\r |
| 258 | mov r0, #0xf\r |
| 259 | 9: @ loop_exit\r |
| 260 | add r9, r9, #(1<<24) @ fix r9\r |
| 261 | sub r1, r1, #328*8 @ restore pdest pointer\r |
| 262 | .endm\r |
| 263 | \r |
| 264 | \r |
| 265 | @ TileLineSinglecolAl (r1=pdest, r4,r7=color)\r |
| 266 | .macro TileLineSinglecolAl0\r |
| 267 | stmia r1!, {r4,r7}\r |
| 268 | add r1, r1, #320\r |
| 269 | .endm\r |
| 270 | \r |
| 271 | .macro TileLineSinglecolAl1\r |
| 272 | strb r4, [r1], #1\r |
| 273 | strh r4, [r1], #2\r |
| 274 | str r4, [r1], #4\r |
| 275 | strb r4, [r1], #1+320\r |
| 276 | @ add r1, r1, #320\r |
| 277 | .endm\r |
| 278 | \r |
| 279 | .macro TileLineSinglecolAl2\r |
| 280 | strh r4, [r1], #2\r |
| 281 | str r4, [r1], #4\r |
| 282 | strh r4, [r1], #2\r |
| 283 | add r1, r1, #320\r |
| 284 | .endm\r |
| 285 | \r |
| 286 | .macro TileLineSinglecolAl3\r |
| 287 | strb r4, [r1], #1\r |
| 288 | str r4, [r1], #4\r |
| 289 | strh r4, [r1], #2\r |
| 290 | strb r4, [r1], #1+320\r |
| 291 | @ add r1, r1, #320\r |
| 292 | .endm\r |
| 293 | \r |
| 294 | @ TileSinglecol (r1=pdest, r2=pixels8, r3=pal) r4,r7: scratch, r0=0xf\r |
| 295 | @ kaligned==1, if dest is always aligned\r |
| 296 | .macro TileSinglecol kaligned=0\r |
| 297 | and r4, r2, #0xf @ we assume we have good r2 from previous time\r |
| 298 | orr r4, r4, r3\r |
| 299 | orr r4, r4, r4, lsl #8\r |
| 300 | orr r4, r4, r4, lsl #16\r |
| 301 | mov r7, r4\r |
| 302 | \r |
| 303 | .if !\kaligned\r |
| 304 | tst r1, #2 @ not aligned?\r |
| 305 | bne 2f\r |
| 306 | tst r1, #1\r |
| 307 | bne 1f\r |
| 308 | .endif\r |
| 309 | \r |
| 310 | TileLineSinglecolAl0\r |
| 311 | TileLineSinglecolAl0\r |
| 312 | TileLineSinglecolAl0\r |
| 313 | TileLineSinglecolAl0\r |
| 314 | TileLineSinglecolAl0\r |
| 315 | TileLineSinglecolAl0\r |
| 316 | TileLineSinglecolAl0\r |
| 317 | TileLineSinglecolAl0\r |
| 318 | \r |
| 319 | .if !\kaligned\r |
| 320 | b 4f\r |
| 321 | 1:\r |
| 322 | TileLineSinglecolAl1\r |
| 323 | TileLineSinglecolAl1\r |
| 324 | TileLineSinglecolAl1\r |
| 325 | TileLineSinglecolAl1\r |
| 326 | TileLineSinglecolAl1\r |
| 327 | TileLineSinglecolAl1\r |
| 328 | TileLineSinglecolAl1\r |
| 329 | TileLineSinglecolAl1\r |
| 330 | b 4f\r |
| 331 | \r |
| 332 | 2:\r |
| 333 | tst r1, #1\r |
| 334 | bne 3f\r |
| 335 | \r |
| 336 | TileLineSinglecolAl2\r |
| 337 | TileLineSinglecolAl2\r |
| 338 | TileLineSinglecolAl2\r |
| 339 | TileLineSinglecolAl2\r |
| 340 | TileLineSinglecolAl2\r |
| 341 | TileLineSinglecolAl2\r |
| 342 | TileLineSinglecolAl2\r |
| 343 | TileLineSinglecolAl2\r |
| 344 | b 4f\r |
| 345 | \r |
| 346 | 3:\r |
| 347 | TileLineSinglecolAl3\r |
| 348 | TileLineSinglecolAl3\r |
| 349 | TileLineSinglecolAl3\r |
| 350 | TileLineSinglecolAl3\r |
| 351 | TileLineSinglecolAl3\r |
| 352 | TileLineSinglecolAl3\r |
| 353 | TileLineSinglecolAl3\r |
| 354 | TileLineSinglecolAl3\r |
| 355 | \r |
| 356 | 4:\r |
| 357 | .endif\r |
| 358 | sub r1, r1, #328*8 @ restore pdest pointer\r |
| 359 | .endm\r |
| 360 | \r |
| 361 | \r |
| 362 | \r |
| 363 | @ DrawLayerTiles(*hcache, *scrpos, (cells<<24)|(nametab<<9)|(vscroll&0x3ff)<<11|(shift[width]<<8)|planeend, (ymask<<24)|(planestart<<16)|[htab||hscroll]\r |
| 364 | \r |
| 98a27142 |
365 | @ void DrawLayerFull(int plane, int *hcache, int planestart, int planeend,\r |
| 366 | @ struct PicoEState *est)\r |
| cc68a136 |
367 | \r |
| 368 | .global DrawLayerFull\r |
| 369 | \r |
| 370 | DrawLayerFull:\r |
| 98a27142 |
371 | ldr r12,[sp] @ est\r |
| cc68a136 |
372 | stmfd sp!, {r4-r11,lr}\r |
| 373 | \r |
| 374 | mov r6, r1 @ hcache\r |
| 375 | \r |
| 88fd63ad |
376 | ldr r11, [r12, #OFS_EST_Pico]\r |
| 377 | ldr r10, [r12, #OFS_EST_PicoMem_vram]\r |
| 378 | ldrb r5, [r11, #OFS_Pico_video_reg+13] @ pvid->reg[13]\r |
| 379 | ldrb r7, [r11, #OFS_Pico_video_reg+11]\r |
| ea8c405f |
380 | \r |
| cc68a136 |
381 | sub lr, r3, r2\r |
| 382 | and lr, lr, #0x00ff0000 @ lr=cells\r |
| 383 | \r |
| cc68a136 |
384 | mov r5, r5, lsl #10 @ htab=pvid->reg[13]<<9; (halfwords)\r |
| 385 | add r5, r5, r0, lsl #1 @ htab+=plane\r |
| 386 | bic r5, r5, #0x00ff0000 @ just in case\r |
| 387 | \r |
| cc68a136 |
388 | tst r7, #3 @ full screen scroll? (if ==0)\r |
| 88fd63ad |
389 | ldrb r7, [r11, #OFS_Pico_video_reg+16] @ ??hh??ww\r |
| cc68a136 |
390 | ldreqh r5, [r10, r5]\r |
| 391 | biceq r5, r5, #0x0000fc00 @ r5=hscroll (0-0x3ff)\r |
| 392 | movne r5, r5, lsr #1\r |
| 393 | orrne r5, r5, #0x8000 @ this marks that we have htab pointer, not hscroll here\r |
| 394 | \r |
| cc68a136 |
395 | and r8, r7, #3\r |
| 396 | \r |
| 397 | orr r5, r5, r7, lsl #1+24\r |
| 398 | orr r5, r5, #0x1f000000\r |
| 399 | cmp r8, #1\r |
| 400 | biclt r5, r5, #0x80000000\r |
| 401 | biceq r5, r5, #0xc0000000\r |
| 402 | bicgt r5, r5, #0xe0000000\r |
| 403 | \r |
| 404 | mov r9, r2, lsl #24\r |
| 405 | orr r5, r5, r9, lsr #8 @ r5=(ymask<<24)|(trow<<16)|[htab||hscroll]\r |
| 406 | \r |
| 407 | add r4, r8, #5\r |
| 408 | cmp r4, #7\r |
| 409 | subge r4, r4, #1 @ r4=shift[width] (5,6,6,7)\r |
| 410 | \r |
| 411 | orr lr, lr, r4 \r |
| 412 | orr lr, lr, r3, lsl #24 @ lr=(planeend<<24)|(cells<<16)|shift[width]\r |
| 413 | \r |
| 414 | @ calculate xmask:\r |
| 415 | mov r8, r8, lsl #24+5\r |
| 416 | orr r8, r8, #0x1f000000\r |
| 417 | \r |
| ea8c405f |
418 | @ Find name table:\r |
| cc68a136 |
419 | tst r0, r0\r |
| 88fd63ad |
420 | ldreqb r4, [r11, #OFS_Pico_video_reg+2]\r |
| cc68a136 |
421 | moveq r4, r4, lsr #3\r |
| 88fd63ad |
422 | ldrneb r4, [r11, #OFS_Pico_video_reg+4]\r |
| cc68a136 |
423 | and r4, r4, #7\r |
| 424 | orr lr, lr, r4, lsl #13 @ lr|=nametab_bits{3}<<13\r |
| 425 | \r |
| 98a27142 |
426 | ldr r11,[sp, #9*4] @ est\r |
| 959ea39b |
427 | ldr r4, [r11, #OFS_EST_Draw2Start]\r |
| b9bc876c |
428 | ldr r7, [r11, #OFS_EST_rendstatus]\r |
| 88fd63ad |
429 | ldr r11, [r11, #OFS_EST_Draw2FB]\r |
| 959ea39b |
430 | sub r4, r9, r4, lsl #24\r |
| 431 | tst r7, #PDRAW_BORDER_32 @ H32 border mode?\r |
| 96a972dc |
432 | tstne r7, #PDRAW_32_COLS\r |
| b9bc876c |
433 | addne r11, r11, #32\r |
| cc68a136 |
434 | mov r4, r4, asr #24\r |
| 435 | mov r7, #328*8\r |
| 959ea39b |
436 | mla r11, r4, r7, r11 @ scrpos+=8*328*(planestart-Draw2Start);\r |
| cc68a136 |
437 | \r |
| ea8c405f |
438 | @ Get vertical scroll value:\r |
| cf07a88d |
439 | add_c24 r7, r10, (OFS_PMEM_vsram-OFS_PMEM_vram)\r |
| cc68a136 |
440 | ldr r7, [r7]\r |
| 441 | tst r0, r0\r |
| 442 | moveq r7, r7, lsl #22\r |
| 443 | movne r7, r7, lsl #6\r |
| 444 | mov r7, r7, lsr #22 @ r7=vscroll (10 bits)\r |
| 445 | \r |
| 446 | orr lr, lr, r7, lsl #3\r |
| 447 | mov lr, lr, ror #24 @ packed: cccccccc nnnvvvvv vvvvvsss pppppppp: cells, nametab, vscroll, shift[width], planeend\r |
| 448 | \r |
| 449 | ands r7, r7, #7\r |
| 450 | addne lr, lr, #1 @ we have vertically clipped tiles due to vscroll, so we need 1 more row\r |
| 451 | \r |
| 452 | rsb r7, r7, #8\r |
| 453 | str r7, [r6], #4 @ push y-offset to tilecache\r |
| 454 | mov r4, #328\r |
| 455 | mla r11, r4, r7, r11 @ scrpos+=(8-(vscroll&7))*328;\r |
| 456 | \r |
| 457 | mov r9, #0xff000000 @ r9=(prevcode<<8)|flags: 1~tile empty, 2~tile singlecolor\r |
| 458 | \r |
| 459 | .rtrloop_outer:\r |
| 460 | mov r4, lr, lsl #11\r |
| 461 | mov r4, r4, lsr #25 @ r4=vscroll>>3 (7 bits)\r |
| 462 | add r4, r4, r5, lsr #16 @ +trow\r |
| 463 | and r4, r4, r5, lsr #24 @ &=ymask\r |
| 464 | mov r7, lr, lsr #8\r |
| 465 | and r7, r7, #7 @ shift[width]\r |
| 466 | mov r0, lr, lsr #9\r |
| 467 | and r0, r0, #0x7000 @ nametab\r |
| 468 | add r12,r0, r4, lsl r7 @ nametab_row = nametab + (((trow+(vscroll>>3))&ymask)<<shift[width]); \r |
| 469 | \r |
| 470 | mov r4, lr, lsr #24\r |
| 471 | orr r12,r12,r4, lsl #23\r |
| 472 | mov r12,r12,lsl #1 @ (nametab_row|(cells<<24)) (halfword compliant)\r |
| 473 | \r |
| 474 | @ htab?\r |
| 475 | tst r5, #0x8000\r |
| 476 | moveq r7, r5, lsl #22 @ hscroll (0-3FFh)\r |
| 477 | moveq r7, r7, lsr #22\r |
| 478 | beq .rtr_hscroll_done\r |
| 479 | \r |
| 480 | @ get hscroll from htab\r |
| 481 | mov r7, r5, lsl #17\r |
| 482 | ands r4, r5, #0x00ff0000\r |
| 483 | add r7, r7, r4, lsl #5 @ +=trow<<4\r |
| 484 | andne r4, lr, #0x3800\r |
| 485 | subne r7, r7, r4, lsl #7 @ if(trow) htaddr-=(vscroll&7)<<1;\r |
| 486 | mov r7, r7, lsr #16 @ halfwords\r |
| 487 | ldrh r7, [r10, r7]\r |
| 488 | \r |
| 489 | .rtr_hscroll_done:\r |
| ea8c405f |
490 | and r8, r8, #0xff000000\r |
| cc68a136 |
491 | rsb r4, r7, #0 @ r4=tilex=(-ts->hscroll)>>3\r |
| 492 | mov r4, r4, asr #3\r |
| 493 | and r4, r4, #0xff\r |
| cc68a136 |
494 | orr r8, r8, r4 @ r8=(xmask<<24)|tilex\r |
| 495 | \r |
| 496 | sub r7, r7, #1\r |
| 497 | and r7, r7, #7\r |
| 498 | add r7, r7, #1 @ r7=dx=((ts->hscroll-1)&7)+1\r |
| 499 | \r |
| 500 | cmp r7, #8\r |
| 501 | subeq r12,r12, #0x01000000 @ we will loop cells+1 times, so loop less when there is no hscroll\r |
| 502 | \r |
| 503 | add r1, r11, r7 @ r1=pdest\r |
| 504 | mov r0, #0xf\r |
| 505 | b .rtrloop_enter\r |
| 506 | \r |
| 507 | @ r4 & r7 are scratch in this loop\r |
| 508 | .rtrloop: @ 40-41 times\r |
| 509 | add r1, r1, #8\r |
| 510 | subs r12,r12, #0x01000000\r |
| 511 | add r8, r8, #1\r |
| 512 | bmi .rtrloop_exit\r |
| 513 | \r |
| 514 | .rtrloop_enter:\r |
| 515 | and r7, r8, r8, lsr #24\r |
| 516 | add r7, r10, r7, lsl #1\r |
| 517 | bic r4, r12, #0xff000000 @ Pico.vram[nametab_row+(tilex&xmask)];\r |
| 518 | ldrh r7, [r7, r4] @ r7=code (int, but from unsigned, no sign extend)\r |
| 519 | \r |
| 520 | tst r7, #0x8000\r |
| 521 | bne .rtr_hiprio\r |
| 522 | \r |
| 523 | cmp r7, r9, lsr #8\r |
| 524 | bne .rtr_notsamecode\r |
| 525 | @ we know stuff about this tile already\r |
| 526 | tst r9, #1\r |
| 527 | bne .rtrloop @ empty tile\r |
| 528 | tst r9, #2\r |
| 529 | bne .rtr_singlecolor @ singlecolor tile\r |
| 530 | b .rtr_samecode\r |
| 531 | \r |
| 532 | .rtr_notsamecode:\r |
| 533 | and r4, r9, #0x600000\r |
| 534 | mov r9, r7, lsl #8 @ remember new code\r |
| 535 | \r |
| 536 | @ update cram\r |
| 537 | and r7, r7, #0x6000\r |
| 538 | mov r3, r7, asr #9 @ r3=pal=((code&0x6000)>>9);\r |
| 539 | \r |
| 540 | .rtr_samecode:\r |
| 541 | tst r9, #0x100000 @ vflip?\r |
| 542 | bne .rtr_vflip\r |
| 543 | \r |
| 544 | tst r9, #0x080000 @ hflip?\r |
| 545 | bne .rtr_hflip\r |
| 546 | \r |
| 547 | @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=Pico.vram) r2,r4,r7: scratch, r0=0xf\r |
| 548 | Tile 0, 0\r |
| 549 | b .rtrloop\r |
| 550 | \r |
| 551 | .rtr_hflip:\r |
| 552 | Tile 1, 0\r |
| 553 | b .rtrloop\r |
| 554 | \r |
| 555 | .rtr_vflip:\r |
| 556 | tst r9, #0x080000 @ hflip?\r |
| 557 | bne .rtr_vflip_hflip\r |
| 558 | \r |
| 559 | Tile 0, 1\r |
| 560 | b .rtrloop\r |
| 561 | \r |
| 562 | .rtr_vflip_hflip:\r |
| 563 | Tile 1, 1\r |
| 564 | b .rtrloop\r |
| 565 | \r |
| 566 | .rtr_singlecolor:\r |
| 567 | TileSinglecol\r |
| 568 | b .rtrloop\r |
| 569 | \r |
| 570 | .rtr_hiprio:\r |
| 571 | @ *(*hcache)++ = code|(dx<<16)|(trow<<27);\r |
| 572 | sub r4, r1, r11\r |
| 573 | orr r7, r7, r4, lsl #16\r |
| 574 | and r4, r5, #0x00ff0000\r |
| 575 | orr r7, r7, r4, lsl #11 @ (trow<<27)\r |
| 576 | str r7, [r6], #4 @ cache hi priority tile\r |
| 577 | b .rtrloop\r |
| 578 | \r |
| 579 | .rtrloop_exit:\r |
| 580 | add r5, r5, #0x00010000\r |
| 581 | mov r4, r5, lsl #8\r |
| 582 | cmp r4, lr, lsl #24\r |
| 583 | bge .rtrloop_outer_exit\r |
| 584 | add r11, r11, #328*8\r |
| 585 | b .rtrloop_outer\r |
| 586 | \r |
| 587 | .rtrloop_outer_exit:\r |
| 588 | \r |
| 589 | @ terminate cache list\r |
| 590 | mov r0, #0\r |
| 591 | str r0, [r6] @ save cache pointer\r |
| 592 | \r |
| 593 | ldmfd sp!, {r4-r11,lr}\r |
| 594 | bx lr\r |
| 595 | \r |
| 596 | .pool\r |
| 597 | \r |
| 598 | \r |
| 98a27142 |
599 | @ void DrawTilesFromCacheF(int *hc, struct PicoEState *est)\r |
| cc68a136 |
600 | \r |
| 98a27142 |
601 | .global DrawTilesFromCacheF\r |
| cc68a136 |
602 | \r |
| 603 | DrawTilesFromCacheF:\r |
| 959ea39b |
604 | stmfd sp!, {r4-r11,lr}\r |
| cc68a136 |
605 | \r |
| 606 | mov r9, #0xff000000 @ r9=prevcode=-1\r |
| 607 | mvn r6, #0 @ r6=prevy=-1\r |
| 608 | \r |
| b9bc876c |
609 | ldr r7, [r1, #OFS_EST_rendstatus]\r |
| 88fd63ad |
610 | ldr r4, [r1, #OFS_EST_Draw2FB]\r |
| 959ea39b |
611 | ldr r11,[r1, #OFS_EST_Draw2Start]\r |
| 98a27142 |
612 | ldr r2, [r0], #4 @ read y offset\r |
| 959ea39b |
613 | tst r7, #PDRAW_BORDER_32 @ H32 border mode?\r |
| 96a972dc |
614 | tstne r7, #PDRAW_32_COLS\r |
| b9bc876c |
615 | addne r4, r4, #32\r |
| cc68a136 |
616 | mov r7, #328\r |
| 98a27142 |
617 | mla r2, r7, r2, r4\r |
| 618 | sub r12, r2, #(328*8*START_ROW) @ r12=scrpos\r |
| cc68a136 |
619 | \r |
| 88fd63ad |
620 | ldr r10, [r1, #OFS_EST_PicoMem_vram]\r |
| cc68a136 |
621 | mov r8, r0 @ hc\r |
| 622 | mov r0, #0xf\r |
| 623 | \r |
| 624 | @ scratch: r4, r7\r |
| 625 | @ *hcache++ = code|(dx<<16)|(trow<<27); // cache it\r |
| 626 | \r |
| 627 | .dtfcf_loop:\r |
| 628 | ldr r7, [r8], #4 @ read code\r |
| 629 | movs r1, r7, lsr #16 @ r1=dx;\r |
| 959ea39b |
630 | ldmeqfd sp!, {r4-r11,pc} @ dx is never zero, this must be a terminator, return\r |
| cc68a136 |
631 | \r |
| ea8c405f |
632 | @ row changed?\r |
| cc68a136 |
633 | cmp r6, r7, lsr #27\r |
| 634 | movne r6, r7, lsr #27\r |
| 959ea39b |
635 | subne r6, r6, r11\r |
| cc68a136 |
636 | movne r4, #328*8\r |
| 959ea39b |
637 | mlane r5, r4, r6, r12 @ r5=pd = scrpos + (prevy-Draw2Start)*328*8\r |
| cc68a136 |
638 | \r |
| 639 | bic r1, r1, #0xf800\r |
| 640 | add r1, r5, r1 @ r1=pdest (halfwords)\r |
| 641 | \r |
| 642 | mov r7, r7, lsl #16\r |
| 643 | mov r7, r7, lsr #16\r |
| 644 | \r |
| 645 | cmp r7, r9, lsr #8\r |
| 646 | bne .dtfcf_notsamecode\r |
| 647 | @ we know stuff about this tile already\r |
| 648 | tst r9, #1\r |
| 649 | bne .dtfcf_loop @ empty tile\r |
| 650 | tst r9, #2\r |
| 651 | bne .dtfcf_singlecolor @ singlecolor tile\r |
| 652 | b .dtfcf_samecode\r |
| 653 | \r |
| 654 | .dtfcf_notsamecode:\r |
| 655 | and r4, r9, #0x600000\r |
| 656 | mov r9, r7, lsl #8 @ remember new code\r |
| 657 | \r |
| 658 | @ update cram val\r |
| 659 | and r7, r7, #0x6000\r |
| 660 | mov r3, r7, asr #9 @ r3=pal=((code&0x6000)>>9);\r |
| 661 | \r |
| 662 | \r |
| 663 | .dtfcf_samecode:\r |
| 664 | \r |
| 665 | tst r9, #0x100000 @ vflip?\r |
| 666 | bne .dtfcf_vflip\r |
| 667 | \r |
| 668 | tst r9, #0x080000 @ hflip?\r |
| 669 | bne .dtfcf_hflip\r |
| 670 | \r |
| 671 | @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=Pico.vram) r2,r4,r7: scratch, r0=0xf\r |
| 672 | Tile 0, 0\r |
| 673 | b .dtfcf_loop\r |
| 674 | \r |
| 675 | .dtfcf_hflip:\r |
| 676 | Tile 1, 0\r |
| 677 | b .dtfcf_loop\r |
| 678 | \r |
| 679 | .dtfcf_vflip:\r |
| 680 | tst r9, #0x080000 @ hflip?\r |
| 681 | bne .dtfcf_vflip_hflip\r |
| 682 | \r |
| 683 | Tile 0, 1\r |
| 684 | b .dtfcf_loop\r |
| 685 | \r |
| 686 | .dtfcf_vflip_hflip:\r |
| 687 | Tile 1, 1\r |
| 688 | b .dtfcf_loop\r |
| 689 | \r |
| 690 | .dtfcf_singlecolor:\r |
| 691 | TileSinglecol\r |
| 692 | b .dtfcf_loop\r |
| 693 | \r |
| 694 | .pool\r |
| 695 | \r |
| 696 | \r |
| 697 | @ @@@@@@@@@@@@@@@\r |
| 698 | \r |
| 699 | @ (tile_start<<16)|row_start\r |
| 98a27142 |
700 | @ void DrawWindowFull(int start, int end, int prio, struct PicoEState *est)\r |
| 701 | \r |
| 702 | .global DrawWindowFull\r |
| cc68a136 |
703 | \r |
| 704 | DrawWindowFull:\r |
| 705 | stmfd sp!, {r4-r11,lr}\r |
| 706 | \r |
| 88fd63ad |
707 | ldr r11, [r3, #OFS_EST_Pico]\r |
| 708 | ldrb r12, [r11, #OFS_Pico_video_reg+3] @ pvid->reg[3]\r |
| cc68a136 |
709 | mov r12, r12, lsl #10\r |
| 710 | \r |
| 88fd63ad |
711 | ldr r4, [r11, #OFS_Pico_video_reg+12]\r |
| cc68a136 |
712 | mov r5, #1 @ nametab_step\r |
| b9bc876c |
713 | ldr r11, [r3, #OFS_EST_Draw2FB]\r |
| 959ea39b |
714 | ldr r6, [r3, #OFS_EST_Draw2Start]\r |
| cc68a136 |
715 | tst r4, #1 @ 40 cell mode?\r |
| 716 | andne r12, r12, #0xf000 @ 0x3c<<10\r |
| cc68a136 |
717 | movne r5, r5, lsl #7\r |
| b9bc876c |
718 | bne 0f\r |
| 719 | ldr r7, [r3, #OFS_EST_rendstatus]\r |
| 720 | and r12, r12, #0xf800\r |
| 721 | mov r5, r5, lsl #6 @ nametab_step\r |
| 959ea39b |
722 | tst r7, #PDRAW_BORDER_32\r |
| 96a972dc |
723 | tstne r7, #PDRAW_32_COLS\r |
| b9bc876c |
724 | addne r11, r11, #32 @ center screen in H32 mode\r |
| 725 | \r |
| 726 | 0: and r4, r0, #0xff\r |
| 959ea39b |
727 | sub r4, r4, r6\r |
| 728 | mla r12, r5, r4, r12 @ nametab += nametab_step*(start-Draw2Start];\r |
| cc68a136 |
729 | \r |
| 88fd63ad |
730 | ldr r10, [r3, #OFS_EST_PicoMem_vram]\r |
| cc68a136 |
731 | mov r4, r0, lsr #16 @ r4=start_cell_h\r |
| 732 | add r7, r12, r4, lsl #1\r |
| 733 | \r |
| 734 | @ fetch the first code now\r |
| cc68a136 |
735 | ldrh r7, [r10, r7]\r |
| 736 | cmp r2, r7, lsr #15\r |
| 737 | ldmnefd sp!, {r4-r11,pc} @ hack: simply assume that whole window uses same priority\r |
| 738 | \r |
| 739 | rsb r8, r4, r1, lsr #16 @ cells (h)\r |
| 740 | orr r8, r8, r4, lsl #8\r |
| 741 | mov r4, r1, lsl #24\r |
| 742 | sub r4, r4, r0, lsl #24\r |
| 743 | orr r8, r8, r4, lsr #8 @ r8=cells_h|(start_cell_h<<8)|(cells_v<<16)\r |
| 744 | sub r8, r8, #0x010000 @ adjust for algo\r |
| 745 | \r |
| 746 | mov r9, #0xff000000 @ r9=prevcode=-1\r |
| 747 | \r |
| ea8c405f |
748 | and r4, r0, #0xff\r |
| cc68a136 |
749 | add r11, r11, #328*8\r |
| 959ea39b |
750 | sub r4, r4, r6\r |
| cc68a136 |
751 | add r11, r11, #8\r |
| 752 | \r |
| cc68a136 |
753 | mov r7, #328*8\r |
| 959ea39b |
754 | mla r11, r7, r4, r11 @ scrpos+=8*328*(start-Draw2Start);\r |
| cc68a136 |
755 | mov r0, #0xf\r |
| 756 | \r |
| 757 | .dwfloop_outer:\r |
| 758 | and r6, r8, #0xff00 @ r6=tilex\r |
| 759 | add r1, r11, r6, lsr #5 @ r1=pdest\r |
| 760 | add r6, r12, r6, lsr #7\r |
| 761 | add r6, r10, r6 @ r6=Pico.vram+nametab+tilex\r |
| 762 | orr r8, r8, r8, lsl #24\r |
| 763 | sub r8, r8, #0x01000000 @ cell loop counter\r |
| 764 | b .dwfloop_enter\r |
| 765 | \r |
| 766 | @ r4 & r7 are scratch in this loop\r |
| 767 | .dwfloop:\r |
| 768 | add r1, r1, #8\r |
| 769 | subs r8, r8, #0x01000000\r |
| 770 | bmi .dwfloop_exit\r |
| 771 | \r |
| 772 | .dwfloop_enter:\r |
| 773 | ldrh r7, [r6], #2 @ r7=code\r |
| 774 | \r |
| 775 | cmp r7, r9, lsr #8\r |
| 776 | bne .dwf_notsamecode\r |
| 777 | @ we know stuff about this tile already\r |
| 778 | tst r9, #1\r |
| 779 | bne .dwfloop @ empty tile\r |
| 780 | tst r9, #2\r |
| 781 | bne .dwf_singlecolor @ singlecolor tile\r |
| 782 | b .dwf_samecode\r |
| 783 | \r |
| 784 | .dwf_notsamecode:\r |
| 785 | and r4, r9, #0x600000\r |
| 786 | mov r9, r7, lsl #8 @ remember new code\r |
| 787 | \r |
| 788 | @ update cram val\r |
| 789 | and r7, r7, #0x6000\r |
| 790 | mov r3, r7, asr #9 @ r3=pal=((code&0x6000)>>9);\r |
| 791 | \r |
| 792 | .dwf_samecode:\r |
| 793 | \r |
| 794 | tst r9, #0x100000 @ vflip?\r |
| 795 | bne .dwf_vflip\r |
| 796 | \r |
| 797 | tst r9, #0x080000 @ hflip?\r |
| 798 | bne .dwf_hflip\r |
| 799 | \r |
| 88fd63ad |
800 | @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=PicoMem.vram)\r |
| 801 | @ r2,r4,r7: scratch, r0=0xf\r |
| cc68a136 |
802 | Tile 0, 0\r |
| 803 | b .dwfloop\r |
| 804 | \r |
| 805 | .dwf_hflip:\r |
| 806 | Tile 1, 0\r |
| 807 | b .dwfloop\r |
| 808 | \r |
| 809 | .dwf_vflip:\r |
| 810 | tst r9, #0x080000 @ hflip?\r |
| 811 | bne .dwf_vflip_hflip\r |
| 812 | \r |
| 813 | Tile 0, 1\r |
| 814 | b .dwfloop\r |
| 815 | \r |
| 816 | .dwf_vflip_hflip:\r |
| 817 | Tile 1, 1\r |
| 818 | b .dwfloop\r |
| 819 | \r |
| 820 | .dwf_singlecolor:\r |
| 821 | TileSinglecol 1\r |
| 822 | b .dwfloop\r |
| 823 | \r |
| 824 | .dwfloop_exit:\r |
| 825 | bic r8, r8, #0xff000000 @ fix r8\r |
| 826 | subs r8, r8, #0x010000\r |
| 827 | ldmmifd sp!, {r4-r11,pc}\r |
| 828 | add r11, r11, #328*8\r |
| 829 | add r12, r12, r5 @ nametab+=nametab_step\r |
| 830 | b .dwfloop_outer\r |
| 831 | \r |
| 832 | .pool\r |
| 833 | \r |
| 834 | \r |
| 835 | @ ---------------- sprites ---------------\r |
| 836 | \r |
| 837 | .macro SpriteLoop hflip vflip\r |
| 838 | .if \vflip\r |
| 839 | mov r1, r5, lsr #24 @ height\r |
| 840 | mov r0, #328*8\r |
| 841 | mla r11, r1, r0, r11 @ scrpos+=height*328*8;\r |
| 842 | add r12, r12, r1, lsl #3 @ sy+=height*8\r |
| 843 | .endif\r |
| 844 | mov r0, #0xf\r |
| 845 | .if \hflip\r |
| 846 | and r1, r5, #0xff\r |
| 847 | add r8, r8, r1, lsl #3 @ sx+=width*8\r |
| 848 | 58:\r |
| 849 | cmp r8, #336\r |
| 850 | blt 51f\r |
| 851 | add r9, r9, r5, lsr #16\r |
| 852 | sub r5, r5, #1 @ sub width\r |
| 853 | sub r8, r8, #8\r |
| 854 | b 58b\r |
| 855 | .else\r |
| 856 | cmp r8, #0 @ skip tiles hidden on the left of screen\r |
| 857 | bgt 51f\r |
| 858 | 58:\r |
| 859 | add r9, r9, r5, lsr #16\r |
| 860 | sub r5, r5, #1\r |
| 861 | adds r8, r8, #8\r |
| 862 | ble 58b\r |
| 863 | b 51f\r |
| 864 | .endif\r |
| 865 | \r |
| 866 | 50: @ outer\r |
| 867 | .if !\hflip\r |
| 868 | add r8, r8, #8 @ sx+=8\r |
| 869 | .endif\r |
| 870 | bic r5, r5, #0xff000000 @ fix height\r |
| 871 | orr r5, r5, r5, lsl #16\r |
| 872 | \r |
| 873 | 51: @ outer_enter\r |
| 874 | sub r5, r5, #1 @ width--\r |
| 875 | movs r1, r5, lsl #24\r |
| 876 | ldmmifd sp!, {r4-r11,pc} @ end of tile\r |
| 877 | .if \hflip\r |
| 878 | subs r8, r8, #8 @ sx-=8\r |
| 879 | ldmlefd sp!, {r4-r11,pc} @ tile offscreen\r |
| 880 | .else\r |
| 881 | cmp r8, #328\r |
| 882 | ldmgefd sp!, {r4-r11,pc} @ tile offscreen\r |
| 883 | .endif\r |
| 884 | mov r6, r12 @ r6=sy\r |
| 885 | add r1, r11, r8 @ pdest=scrpos+sx\r |
| 886 | b 53f\r |
| 887 | \r |
| 888 | 52: @ inner\r |
| 889 | add r9, r9, #1<<8 @ tile++\r |
| 890 | .if !\vflip\r |
| 891 | add r6, r6, #8 @ sy+=8\r |
| 892 | add r1, r1, #328*8\r |
| 893 | .endif\r |
| 894 | \r |
| 895 | 53: @ inner_enter\r |
| 896 | @ end of sprite?\r |
| 897 | subs r5, r5, #0x01000000\r |
| 898 | bmi 50b @ ->outer\r |
| 899 | .if \vflip\r |
| 900 | sub r6, r6, #8 @ sy-=8\r |
| 901 | sub r1, r1, #328*8\r |
| 902 | .endif\r |
| 903 | \r |
| 904 | @ offscreen?\r |
| 905 | cmp r6, #(START_ROW*8)\r |
| 906 | ble 52b\r |
| 907 | \r |
| 908 | cmp r6, #(END_ROW*8+8)\r |
| 909 | bge 52b\r |
| 910 | \r |
| 88fd63ad |
911 | @ Tile (r1=pdest, r3=pal, r9=prevcode, r10=PicoMem.vram)\r |
| 912 | @ r2,r4,r7: scratch, r0=0xf\r |
| cc68a136 |
913 | Tile \hflip, \vflip\r |
| 914 | b 52b\r |
| 915 | .endm\r |
| 916 | \r |
| 98a27142 |
917 | @ void DrawSpriteFull(unsigned int *sprite, struct PicoEState *est)\r |
| cc68a136 |
918 | \r |
| 98a27142 |
919 | .global DrawSpriteFull\r |
| cc68a136 |
920 | \r |
| 921 | DrawSpriteFull:\r |
| 922 | stmfd sp!, {r4-r11,lr}\r |
| 923 | \r |
| 924 | ldr r3, [r0] @ sprite[0]\r |
| 925 | mov r5, r3, lsl #4\r |
| 926 | mov r6, r5, lsr #30\r |
| 927 | add r6, r6, #1 @ r6=width\r |
| 928 | mov r5, r5, lsl #2\r |
| 929 | mov r5, r5, lsr #30\r |
| 930 | add r5, r5, #1 @ r5=height\r |
| 931 | \r |
| 932 | mov r12, r3, lsl #23\r |
| 933 | mov r12, r12, lsr #23\r |
| cc68a136 |
934 | \r |
| 935 | ldr lr, [r0, #4] @ lr=code\r |
| ea8c405f |
936 | sub r12, r12, #0x78 @ r12=sy\r |
| cc68a136 |
937 | mov r8, lr, lsl #7\r |
| 938 | mov r8, r8, lsr #23\r |
| 939 | sub r8, r8, #0x78 @ r8=sx\r |
| 940 | \r |
| 941 | mov r9, lr, lsl #21\r |
| 942 | mov r9, r9, lsr #13 @ r9=tile<<8\r |
| 943 | \r |
| 944 | and r3, lr, #0x6000\r |
| 945 | mov r3, r3, lsr #9 @ r3=pal=((code>>9)&0x30);\r |
| 946 | \r |
| b9bc876c |
947 | ldr r0, [r1, #OFS_EST_rendstatus]\r |
| 88fd63ad |
948 | ldr r11, [r1, #OFS_EST_Draw2FB]\r |
| 959ea39b |
949 | ldr r2, [r1, #OFS_EST_Draw2Start]\r |
| 88fd63ad |
950 | ldr r10, [r1, #OFS_EST_PicoMem_vram]\r |
| 959ea39b |
951 | tst r0, #PDRAW_BORDER_32 @ H32 border mode?\r |
| 96a972dc |
952 | tstne r0, #PDRAW_32_COLS\r |
| b9bc876c |
953 | addne r11, r11, #32\r |
| 959ea39b |
954 | sub r12, r12, r2, lsl #3\r |
| cc68a136 |
955 | mov r0, #328\r |
| 959ea39b |
956 | mla r11, r12, r0, r11 @ scrpos+=(sy-Draw2Start*8)*328;\r |
| cc68a136 |
957 | \r |
| 958 | orr r5, r5, r5, lsl #16 @\r |
| 959 | orr r5, r6, r5, lsl #8 @ r5=width|(height<<8)|(height<<24)\r |
| 960 | \r |
| 961 | tst lr, #0x1000 @ vflip?\r |
| 962 | bne .dsf_vflip\r |
| 963 | \r |
| 964 | tst lr, #0x0800 @ hflip?\r |
| 965 | bne .dsf_hflip\r |
| 966 | \r |
| 967 | SpriteLoop 0, 0\r |
| 968 | \r |
| 969 | .dsf_hflip:\r |
| 970 | SpriteLoop 1, 0\r |
| 971 | \r |
| 972 | .dsf_vflip:\r |
| 973 | tst lr, #0x0800 @ hflip?\r |
| 974 | bne .dsf_vflip_hflip\r |
| 975 | \r |
| 976 | SpriteLoop 0, 1\r |
| 977 | \r |
| 978 | .dsf_vflip_hflip:\r |
| 979 | SpriteLoop 1, 1\r |
| 980 | \r |
| 981 | .pool\r |
| 982 | \r |
| cff531af |
983 | @ vim:filetype=armasm\r |
notaz.gp2x.de / picodrive.git / blame