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tweaks from 2008 (gpsp09-2xb_3)
[gpsp.git] / video.c
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2823a4c8 1/* gameplaySP
2 *
3 * Copyright (C) 2006 Exophase <exophase@gmail.com>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of
8 * the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include "common.h"
21#include "font.h"
22
23#ifdef PSP_BUILD
24
25#include <pspctrl.h>
26
27#include <pspkernel.h>
28#include <pspdebug.h>
29#include <pspdisplay.h>
30
31#include <pspgu.h>
32#include <psppower.h>
33#include <psprtc.h>
34
35static float *screen_vertex = (float *)0x441FC100;
36static u32 *ge_cmd = (u32 *)0x441FC000;
37static u16 *psp_gu_vram_base = (u16 *)(0x44000000);
38static u32 *ge_cmd_ptr = (u32 *)0x441FC000;
39static u32 gecbid;
40static u32 video_direct = 0;
41
42static u32 __attribute__((aligned(16))) display_list[32];
43
44#define GBA_SCREEN_WIDTH 240
45#define GBA_SCREEN_HEIGHT 160
46
47#define PSP_SCREEN_WIDTH 480
48#define PSP_SCREEN_HEIGHT 272
49#define PSP_LINE_SIZE 512
50
51#define PSP_ALL_BUTTON_MASK 0xFFFF
52
53#define GE_CMD_FBP 0x9C
54#define GE_CMD_FBW 0x9D
55#define GE_CMD_TBP0 0xA0
56#define GE_CMD_TBW0 0xA8
57#define GE_CMD_TSIZE0 0xB8
58#define GE_CMD_TFLUSH 0xCB
59#define GE_CMD_CLEAR 0xD3
60#define GE_CMD_VTYPE 0x12
61#define GE_CMD_BASE 0x10
62#define GE_CMD_VADDR 0x01
63#define GE_CMD_IADDR 0x02
64#define GE_CMD_PRIM 0x04
65#define GE_CMD_FINISH 0x0F
66#define GE_CMD_SIGNAL 0x0C
67#define GE_CMD_NOP 0x00
68
69#define GE_CMD(cmd, operand) \
70 *ge_cmd_ptr = (((GE_CMD_##cmd) << 24) | (operand)); \
71 ge_cmd_ptr++ \
72
73static u16 *screen_texture = (u16 *)(0x4000000 + (512 * 272 * 2));
74static u16 *current_screen_texture = (u16 *)(0x4000000 + (512 * 272 * 2));
75static u16 *screen_pixels = (u16 *)(0x4000000 + (512 * 272 * 2));
76static u32 screen_pitch = 240;
77
78static void Ge_Finish_Callback(int id, void *arg)
79{
80}
81
82#define get_screen_pixels() \
83 screen_pixels \
84
85#define get_screen_pitch() \
86 screen_pitch \
87
88#else
89
90#ifdef GP2X_BUILD
91#include "SDL_gp2x.h"
92SDL_Surface *hw_screen;
93#endif
94SDL_Surface *screen;
95const u32 video_scale = 1;
01087863 96extern void gp2x_flush_cache(void *beginning_addr, void *end_addr, int flags);
2823a4c8 97
98#define get_screen_pixels() \
99 ((u16 *)screen->pixels) \
100
101#define get_screen_pitch() \
102 (screen->pitch / 2) \
103
104#endif
105
106void render_scanline_conditional_tile(u32 start, u32 end, u16 *scanline,
107 u32 enable_flags, u32 dispcnt, u32 bldcnt, tile_layer_render_struct
108 *layer_renderers);
109void render_scanline_conditional_bitmap(u32 start, u32 end, u16 *scanline,
110 u32 enable_flags, u32 dispcnt, u32 bldcnt, bitmap_layer_render_struct
111 *layer_renderers);
112
113#define no_op \
114
115// This old version is not necessary if the palette is either being converted
116// transparently or the ABGR 1555 format is being used natively. The direct
117// version (without conversion) is much faster.
118
119#define tile_lookup_palette_full(palette, source) \
120 current_pixel = palette[source]; \
121 convert_palette(current_pixel) \
122
123#define tile_lookup_palette(palette, source) \
124 current_pixel = palette[source]; \
125
126
127#ifdef RENDER_COLOR16_NORMAL
128
129#define tile_expand_base_normal(index) \
130 tile_expand_base_color16(index) \
131
132#else
133
134#define tile_expand_base_normal(index) \
135 tile_lookup_palette(palette, current_pixel); \
136 dest_ptr[index] = current_pixel \
137
138#endif
139
140#define tile_expand_transparent_normal(index) \
141 tile_expand_base_normal(index) \
142
143#define tile_expand_copy(index) \
144 dest_ptr[index] = copy_ptr[index] \
145
146
147#define advance_dest_ptr_base(delta) \
148 dest_ptr += delta \
149
150#define advance_dest_ptr_transparent(delta) \
151 advance_dest_ptr_base(delta) \
152
153#define advance_dest_ptr_copy(delta) \
154 advance_dest_ptr_base(delta); \
155 copy_ptr += delta \
156
157
158#define color_combine_mask_a(layer) \
159 ((io_registers[REG_BLDCNT] >> layer) & 0x01) \
160
161// For color blending operations, will create a mask that has in bit
162// 10 if the layer is target B, and bit 9 if the layer is target A.
163
164#define color_combine_mask(layer) \
165 (color_combine_mask_a(layer) | \
166 ((io_registers[REG_BLDCNT] >> (layer + 7)) & 0x02)) << 9 \
167
168// For alpha blending renderers, draw the palette index (9bpp) and
169// layer bits rather than the raw RGB. For the base this should write to
170// the 32bit location directly.
171
172#define tile_expand_base_alpha(index) \
173 dest_ptr[index] = current_pixel | pixel_combine \
174
175#define tile_expand_base_bg(index) \
176 dest_ptr[index] = bg_combine \
177
178
179// For layered (transparent) writes this should shift the "stack" and write
180// to the bottom. This will preserve the topmost pixel and the most recent
181// one.
182
183#define tile_expand_transparent_alpha(index) \
184 dest_ptr[index] = (dest_ptr[index] << 16) | current_pixel | pixel_combine \
185
186
187// OBJ should only shift if the top isn't already OBJ
188#define tile_expand_transparent_alpha_obj(index) \
189 dest = dest_ptr[index]; \
190 if(dest & 0x00000100) \
191 { \
192 dest_ptr[index] = (dest & 0xFFFF0000) | current_pixel | pixel_combine; \
193 } \
194 else \
195 { \
196 dest_ptr[index] = (dest << 16) | current_pixel | pixel_combine; \
197 } \
198
199
200// For color effects that don't need to preserve the previous layer.
201// The color32 version should be used with 32bit wide dest_ptr so as to be
202// compatible with alpha combine on top of it.
203
204#define tile_expand_base_color16(index) \
205 dest_ptr[index] = current_pixel | pixel_combine \
206
207#define tile_expand_transparent_color16(index) \
208 tile_expand_base_color16(index) \
209
210#define tile_expand_base_color32(index) \
211 tile_expand_base_color16(index) \
212
213#define tile_expand_transparent_color32(index) \
214 tile_expand_base_color16(index) \
215
216
217// Operations for isolation 8bpp pixels within 32bpp pixel blocks.
218
219#define tile_8bpp_pixel_op_mask(op_param) \
220 current_pixel = current_pixels & 0xFF \
221
222#define tile_8bpp_pixel_op_shift_mask(shift) \
223 current_pixel = (current_pixels >> shift) & 0xFF \
224
225#define tile_8bpp_pixel_op_shift(shift) \
226 current_pixel = current_pixels >> shift \
227
228#define tile_8bpp_pixel_op_none(shift) \
229
230// Base should always draw raw in 8bpp mode; color 0 will be drawn where
231// color 0 is.
232
233#define tile_8bpp_draw_base_normal(index) \
234 tile_expand_base_normal(index) \
235
236#define tile_8bpp_draw_base_alpha(index) \
237 if(current_pixel) \
238 { \
239 tile_expand_base_alpha(index); \
240 } \
241 else \
242 { \
243 tile_expand_base_bg(index); \
244 } \
245
246
247#define tile_8bpp_draw_base_color16(index) \
248 tile_8bpp_draw_base_alpha(index) \
249
250#define tile_8bpp_draw_base_color32(index) \
251 tile_8bpp_draw_base_alpha(index) \
252
253
254#define tile_8bpp_draw_base(index, op, op_param, alpha_op) \
255 tile_8bpp_pixel_op_##op(op_param); \
256 tile_8bpp_draw_base_##alpha_op(index) \
257
258// Transparent (layered) writes should only replace what is there if the
259// pixel is not transparent (zero)
260
261#define tile_8bpp_draw_transparent(index, op, op_param, alpha_op) \
262 tile_8bpp_pixel_op_##op(op_param); \
263 if(current_pixel) \
264 { \
265 tile_expand_transparent_##alpha_op(index); \
266 } \
267
268#define tile_8bpp_draw_copy(index, op, op_param, alpha_op) \
269 tile_8bpp_pixel_op_##op(op_param); \
270 if(current_pixel) \
271 { \
272 tile_expand_copy(index); \
273 } \
274
275// Get the current tile from the map in 8bpp mode
276
277#define get_tile_8bpp() \
278 current_tile = *map_ptr; \
279 tile_ptr = tile_base + ((current_tile & 0x3FF) * 64) \
280
281
282// Draw half of a tile in 8bpp mode, for base renderer
283
284#define tile_8bpp_draw_four_noflip(index, combine_op, alpha_op) \
285 tile_8bpp_draw_##combine_op(index + 0, mask, 0, alpha_op); \
286 tile_8bpp_draw_##combine_op(index + 1, shift_mask, 8, alpha_op); \
287 tile_8bpp_draw_##combine_op(index + 2, shift_mask, 16, alpha_op); \
288 tile_8bpp_draw_##combine_op(index + 3, shift, 24, alpha_op) \
289
290
291// Like the above, but draws the half-tile horizontally flipped
292
293#define tile_8bpp_draw_four_flip(index, combine_op, alpha_op) \
294 tile_8bpp_draw_##combine_op(index + 3, mask, 0, alpha_op); \
295 tile_8bpp_draw_##combine_op(index + 2, shift_mask, 8, alpha_op); \
296 tile_8bpp_draw_##combine_op(index + 1, shift_mask, 16, alpha_op); \
297 tile_8bpp_draw_##combine_op(index + 0, shift, 24, alpha_op) \
298
299#define tile_8bpp_draw_four_base(index, alpha_op, flip_op) \
300 tile_8bpp_draw_four_##flip_op(index, base, alpha_op) \
301
302
303// Draw half of a tile in 8bpp mode, for transparent renderer; as an
304// optimization the entire thing is checked against zero (in transparent
305// capable renders it is more likely for the pixels to be transparent than
306// opaque)
307
308#define tile_8bpp_draw_four_transparent(index, alpha_op, flip_op) \
309 if(current_pixels != 0) \
310 { \
311 tile_8bpp_draw_four_##flip_op(index, transparent, alpha_op); \
312 } \
313
314#define tile_8bpp_draw_four_copy(index, alpha_op, flip_op) \
315 if(current_pixels != 0) \
316 { \
317 tile_8bpp_draw_four_##flip_op(index, copy, alpha_op); \
318 } \
319
320// Helper macro for drawing 8bpp tiles clipped against the edge of the screen
321
322#define partial_tile_8bpp(combine_op, alpha_op) \
323 for(i = 0; i < partial_tile_run; i++) \
324 { \
325 tile_8bpp_draw_##combine_op(0, mask, 0, alpha_op); \
326 current_pixels >>= 8; \
327 advance_dest_ptr_##combine_op(1); \
328 } \
329
330
331// Draws 8bpp tiles clipped against the left side of the screen,
332// partial_tile_offset indicates how much clipped in it is, partial_tile_run
333// indicates how much it should draw.
334
335#define partial_tile_right_noflip_8bpp(combine_op, alpha_op) \
336 if(partial_tile_offset >= 4) \
337 { \
338 current_pixels = *((u32 *)(tile_ptr + 4)) >> \
339 ((partial_tile_offset - 4) * 8); \
340 partial_tile_8bpp(combine_op, alpha_op); \
341 } \
342 else \
343 { \
344 partial_tile_run -= 4; \
345 current_pixels = *((u32 *)tile_ptr) >> (partial_tile_offset * 8); \
346 partial_tile_8bpp(combine_op, alpha_op); \
347 current_pixels = *((u32 *)(tile_ptr + 4)); \
348 tile_8bpp_draw_four_##combine_op(0, alpha_op, noflip); \
349 advance_dest_ptr_##combine_op(4); \
350 } \
351
352
353// Draws 8bpp tiles clipped against both the left and right side of the
354// screen, IE, runs of less than 8 - partial_tile_offset.
355
356#define partial_tile_mid_noflip_8bpp(combine_op, alpha_op) \
357 if(partial_tile_offset >= 4) \
358 { \
359 current_pixels = *((u32 *)(tile_ptr + 4)) >> \
360 ((partial_tile_offset - 4) * 8); \
361 partial_tile_8bpp(combine_op, alpha_op); \
362 } \
363 else \
364 { \
365 current_pixels = *((u32 *)tile_ptr) >> (partial_tile_offset * 8); \
366 if((partial_tile_offset + partial_tile_run) > 4) \
367 { \
368 u32 old_run = partial_tile_run; \
369 partial_tile_run = 4 - partial_tile_offset; \
370 partial_tile_8bpp(combine_op, alpha_op); \
371 partial_tile_run = old_run - partial_tile_run; \
372 current_pixels = *((u32 *)(tile_ptr + 4)); \
373 partial_tile_8bpp(combine_op, alpha_op); \
374 } \
375 else \
376 { \
377 partial_tile_8bpp(combine_op, alpha_op); \
378 } \
379 } \
380
381
382// Draws 8bpp tiles clipped against the right side of the screen,
383// partial_tile_run indicates how much there is to draw.
384
385#define partial_tile_left_noflip_8bpp(combine_op, alpha_op) \
386 if(partial_tile_run >= 4) \
387 { \
388 current_pixels = *((u32 *)tile_ptr); \
389 tile_8bpp_draw_four_##combine_op(0, alpha_op, noflip); \
390 advance_dest_ptr_##combine_op(4); \
391 tile_ptr += 4; \
392 partial_tile_run -= 4; \
393 } \
394 \
395 current_pixels = *((u32 *)(tile_ptr)); \
396 partial_tile_8bpp(combine_op, alpha_op) \
397
398
399// Draws a non-clipped (complete) 8bpp tile.
400
401#define tile_noflip_8bpp(combine_op, alpha_op) \
402 current_pixels = *((u32 *)tile_ptr); \
403 tile_8bpp_draw_four_##combine_op(0, alpha_op, noflip); \
404 current_pixels = *((u32 *)(tile_ptr + 4)); \
405 tile_8bpp_draw_four_##combine_op(4, alpha_op, noflip) \
406
407
408// Like the above versions but draws flipped tiles.
409
410#define partial_tile_flip_8bpp(combine_op, alpha_op) \
411 for(i = 0; i < partial_tile_run; i++) \
412 { \
413 tile_8bpp_draw_##combine_op(0, shift, 24, alpha_op); \
414 current_pixels <<= 8; \
415 advance_dest_ptr_##combine_op(1); \
416 } \
417
418#define partial_tile_right_flip_8bpp(combine_op, alpha_op) \
419 if(partial_tile_offset >= 4) \
420 { \
421 current_pixels = *((u32 *)tile_ptr) << ((partial_tile_offset - 4) * 8); \
422 partial_tile_flip_8bpp(combine_op, alpha_op); \
423 } \
424 else \
425 { \
426 partial_tile_run -= 4; \
427 current_pixels = *((u32 *)(tile_ptr + 4)) << \
428 ((partial_tile_offset - 4) * 8); \
429 partial_tile_flip_8bpp(combine_op, alpha_op); \
430 current_pixels = *((u32 *)tile_ptr); \
431 tile_8bpp_draw_four_##combine_op(0, alpha_op, flip); \
432 advance_dest_ptr_##combine_op(4); \
433 } \
434
435#define partial_tile_mid_flip_8bpp(combine_op, alpha_op) \
436 if(partial_tile_offset >= 4) \
437 { \
438 current_pixels = *((u32 *)tile_ptr) << ((partial_tile_offset - 4) * 8); \
439 partial_tile_flip_8bpp(combine_op, alpha_op); \
440 } \
441 else \
442 { \
443 current_pixels = *((u32 *)(tile_ptr + 4)) << \
444 ((partial_tile_offset - 4) * 8); \
445 \
446 if((partial_tile_offset + partial_tile_run) > 4) \
447 { \
448 u32 old_run = partial_tile_run; \
449 partial_tile_run = 4 - partial_tile_offset; \
450 partial_tile_flip_8bpp(combine_op, alpha_op); \
451 partial_tile_run = old_run - partial_tile_run; \
452 current_pixels = *((u32 *)(tile_ptr)); \
453 partial_tile_flip_8bpp(combine_op, alpha_op); \
454 } \
455 else \
456 { \
457 partial_tile_flip_8bpp(combine_op, alpha_op); \
458 } \
459 } \
460
461#define partial_tile_left_flip_8bpp(combine_op, alpha_op) \
462 if(partial_tile_run >= 4) \
463 { \
464 current_pixels = *((u32 *)(tile_ptr + 4)); \
465 tile_8bpp_draw_four_##combine_op(0, alpha_op, flip); \
466 advance_dest_ptr_##combine_op(4); \
467 tile_ptr -= 4; \
468 partial_tile_run -= 4; \
469 } \
470 \
471 current_pixels = *((u32 *)(tile_ptr + 4)); \
472 partial_tile_flip_8bpp(combine_op, alpha_op) \
473
474#define tile_flip_8bpp(combine_op, alpha_op) \
475 current_pixels = *((u32 *)(tile_ptr + 4)); \
476 tile_8bpp_draw_four_##combine_op(0, alpha_op, flip); \
477 current_pixels = *((u32 *)tile_ptr); \
478 tile_8bpp_draw_four_##combine_op(4, alpha_op, flip) \
479
480
481// Operations for isolating 4bpp tiles in a 32bit block
482
483#define tile_4bpp_pixel_op_mask(op_param) \
484 current_pixel = current_pixels & 0x0F \
485
486#define tile_4bpp_pixel_op_shift_mask(shift) \
487 current_pixel = (current_pixels >> shift) & 0x0F \
488
489#define tile_4bpp_pixel_op_shift(shift) \
490 current_pixel = current_pixels >> shift \
491
492#define tile_4bpp_pixel_op_none(op_param) \
493
494// Draws a single 4bpp pixel as base, normal renderer; checks to see if the
495// pixel is zero because if so the current palette should not be applied.
496// These ifs can be replaced with a lookup table, may or may not be superior
497// this way, should be benchmarked. The lookup table would be from 0-255
498// identity map except for multiples of 16, which would map to 0.
499
500#define tile_4bpp_draw_base_normal(index) \
501 if(current_pixel) \
502 { \
503 current_pixel |= current_palette; \
504 tile_expand_base_normal(index); \
505 } \
506 else \
507 { \
508 tile_expand_base_normal(index); \
509 } \
510
511
512#define tile_4bpp_draw_base_alpha(index) \
513 if(current_pixel) \
514 { \
515 current_pixel |= current_palette; \
516 tile_expand_base_alpha(index); \
517 } \
518 else \
519 { \
520 tile_expand_base_bg(index); \
521 } \
522
523#define tile_4bpp_draw_base_color16(index) \
524 tile_4bpp_draw_base_alpha(index) \
525
526#define tile_4bpp_draw_base_color32(index) \
527 tile_4bpp_draw_base_alpha(index) \
528
529
530#define tile_4bpp_draw_base(index, op, op_param, alpha_op) \
531 tile_4bpp_pixel_op_##op(op_param); \
532 tile_4bpp_draw_base_##alpha_op(index) \
533
534
535// Draws a single 4bpp pixel as layered, if not transparent.
536
537#define tile_4bpp_draw_transparent(index, op, op_param, alpha_op) \
538 tile_4bpp_pixel_op_##op(op_param); \
539 if(current_pixel) \
540 { \
541 current_pixel |= current_palette; \
542 tile_expand_transparent_##alpha_op(index); \
543 } \
544
545#define tile_4bpp_draw_copy(index, op, op_param, alpha_op) \
546 tile_4bpp_pixel_op_##op(op_param); \
547 if(current_pixel) \
548 { \
549 current_pixel |= current_palette; \
550 tile_expand_copy(index); \
551 } \
552
553
554// Draws eight background pixels in transparent mode, for alpha or normal
555// renderers.
556
557#define tile_4bpp_draw_eight_base_zero(value) \
558 dest_ptr[0] = value; \
559 dest_ptr[1] = value; \
560 dest_ptr[2] = value; \
561 dest_ptr[3] = value; \
562 dest_ptr[4] = value; \
563 dest_ptr[5] = value; \
564 dest_ptr[6] = value; \
565 dest_ptr[7] = value \
566
567
568// Draws eight background pixels for the alpha renderer, basically color zero
569// with the background flag high.
570
571#define tile_4bpp_draw_eight_base_zero_alpha() \
572 tile_4bpp_draw_eight_base_zero(bg_combine) \
573
574#define tile_4bpp_draw_eight_base_zero_color16() \
575 tile_4bpp_draw_eight_base_zero_alpha() \
576
577#define tile_4bpp_draw_eight_base_zero_color32() \
578 tile_4bpp_draw_eight_base_zero_alpha() \
579
580
581// Draws eight background pixels for the normal renderer, just a bunch of
582// zeros.
583
584#ifdef RENDER_COLOR16_NORMAL
585
586#define tile_4bpp_draw_eight_base_zero_normal() \
587 current_pixel = 0; \
588 tile_4bpp_draw_eight_base_zero(current_pixel) \
589
590#else
591
592#define tile_4bpp_draw_eight_base_zero_normal() \
593 current_pixel = palette[0]; \
594 tile_4bpp_draw_eight_base_zero(current_pixel) \
595
596#endif
597
598
599// Draws eight 4bpp pixels.
600
601#define tile_4bpp_draw_eight_noflip(combine_op, alpha_op) \
602 tile_4bpp_draw_##combine_op(0, mask, 0, alpha_op); \
603 tile_4bpp_draw_##combine_op(1, shift_mask, 4, alpha_op); \
604 tile_4bpp_draw_##combine_op(2, shift_mask, 8, alpha_op); \
605 tile_4bpp_draw_##combine_op(3, shift_mask, 12, alpha_op); \
606 tile_4bpp_draw_##combine_op(4, shift_mask, 16, alpha_op); \
607 tile_4bpp_draw_##combine_op(5, shift_mask, 20, alpha_op); \
608 tile_4bpp_draw_##combine_op(6, shift_mask, 24, alpha_op); \
609 tile_4bpp_draw_##combine_op(7, shift, 28, alpha_op) \
610
611
612// Draws eight 4bpp pixels in reverse order (for hflip).
613
614#define tile_4bpp_draw_eight_flip(combine_op, alpha_op) \
615 tile_4bpp_draw_##combine_op(7, mask, 0, alpha_op); \
616 tile_4bpp_draw_##combine_op(6, shift_mask, 4, alpha_op); \
617 tile_4bpp_draw_##combine_op(5, shift_mask, 8, alpha_op); \
618 tile_4bpp_draw_##combine_op(4, shift_mask, 12, alpha_op); \
619 tile_4bpp_draw_##combine_op(3, shift_mask, 16, alpha_op); \
620 tile_4bpp_draw_##combine_op(2, shift_mask, 20, alpha_op); \
621 tile_4bpp_draw_##combine_op(1, shift_mask, 24, alpha_op); \
622 tile_4bpp_draw_##combine_op(0, shift, 28, alpha_op) \
623
624
625// Draws eight 4bpp pixels in base mode, checks if all are zero, if so draws
626// the appropriate background pixels.
627
628#define tile_4bpp_draw_eight_base(alpha_op, flip_op) \
629 if(current_pixels != 0) \
630 { \
631 tile_4bpp_draw_eight_##flip_op(base, alpha_op); \
632 } \
633 else \
634 { \
635 tile_4bpp_draw_eight_base_zero_##alpha_op(); \
636 } \
637
638
639// Draws eight 4bpp pixels in transparent (layered) mode, checks if all are
640// zero and if so draws nothing.
641
642#define tile_4bpp_draw_eight_transparent(alpha_op, flip_op) \
643 if(current_pixels != 0) \
644 { \
645 tile_4bpp_draw_eight_##flip_op(transparent, alpha_op); \
646 } \
647
648
649#define tile_4bpp_draw_eight_copy(alpha_op, flip_op) \
650 if(current_pixels != 0) \
651 { \
652 tile_4bpp_draw_eight_##flip_op(copy, alpha_op); \
653 } \
654
655// Gets the current tile in 4bpp mode, also getting the current palette and
656// the pixel block.
657
658#define get_tile_4bpp() \
659 current_tile = *map_ptr; \
660 current_palette = (current_tile >> 12) << 4; \
661 tile_ptr = tile_base + ((current_tile & 0x3FF) * 32); \
662
663
664// Helper macro for drawing clipped 4bpp tiles.
665
666#define partial_tile_4bpp(combine_op, alpha_op) \
667 for(i = 0; i < partial_tile_run; i++) \
668 { \
669 tile_4bpp_draw_##combine_op(0, mask, 0, alpha_op); \
670 current_pixels >>= 4; \
671 advance_dest_ptr_##combine_op(1); \
672 } \
673
674
675// Draws a 4bpp tile clipped against the left edge of the screen.
676// partial_tile_offset is how far in it's clipped, partial_tile_run is
677// how many to draw.
678
679#define partial_tile_right_noflip_4bpp(combine_op, alpha_op) \
680 current_pixels = *((u32 *)tile_ptr) >> (partial_tile_offset * 4); \
681 partial_tile_4bpp(combine_op, alpha_op) \
682
683
684// Draws a 4bpp tile clipped against both edges of the screen, same as right.
685
686#define partial_tile_mid_noflip_4bpp(combine_op, alpha_op) \
687 partial_tile_right_noflip_4bpp(combine_op, alpha_op) \
688
689
690// Draws a 4bpp tile clipped against the right edge of the screen.
691// partial_tile_offset is how many to draw.
692
693#define partial_tile_left_noflip_4bpp(combine_op, alpha_op) \
694 current_pixels = *((u32 *)tile_ptr); \
695 partial_tile_4bpp(combine_op, alpha_op) \
696
697
698// Draws a complete 4bpp tile row (not clipped)
699#define tile_noflip_4bpp(combine_op, alpha_op) \
700 current_pixels = *((u32 *)tile_ptr); \
701 tile_4bpp_draw_eight_##combine_op(alpha_op, noflip) \
702
703
704// Like the above, but draws flipped tiles.
705
706#define partial_tile_flip_4bpp(combine_op, alpha_op) \
707 for(i = 0; i < partial_tile_run; i++) \
708 { \
709 tile_4bpp_draw_##combine_op(0, shift, 28, alpha_op); \
710 current_pixels <<= 4; \
711 advance_dest_ptr_##combine_op(1); \
712 } \
713
714#define partial_tile_right_flip_4bpp(combine_op, alpha_op) \
715 current_pixels = *((u32 *)tile_ptr) << (partial_tile_offset * 4); \
716 partial_tile_flip_4bpp(combine_op, alpha_op) \
717
718#define partial_tile_mid_flip_4bpp(combine_op, alpha_op) \
719 partial_tile_right_flip_4bpp(combine_op, alpha_op) \
720
721#define partial_tile_left_flip_4bpp(combine_op, alpha_op) \
722 current_pixels = *((u32 *)tile_ptr); \
723 partial_tile_flip_4bpp(combine_op, alpha_op) \
724
725#define tile_flip_4bpp(combine_op, alpha_op) \
726 current_pixels = *((u32 *)tile_ptr); \
727 tile_4bpp_draw_eight_##combine_op(alpha_op, flip) \
728
729
730// Draws a single (partial or complete) tile from the tilemap, flipping
731// as necessary.
732
733#define single_tile_map(tile_type, combine_op, color_depth, alpha_op) \
734 get_tile_##color_depth(); \
735 if(current_tile & 0x800) \
736 tile_ptr += vertical_pixel_flip; \
737 \
738 if(current_tile & 0x400) \
739 { \
740 tile_type##_flip_##color_depth(combine_op, alpha_op); \
741 } \
742 else \
743 { \
744 tile_type##_noflip_##color_depth(combine_op, alpha_op); \
745 } \
746
747
748// Draws multiple sequential tiles from the tilemap, hflips and vflips as
749// necessary.
750
751#define multiple_tile_map(combine_op, color_depth, alpha_op) \
752 for(i = 0; i < tile_run; i++) \
753 { \
754 single_tile_map(tile, combine_op, color_depth, alpha_op); \
755 advance_dest_ptr_##combine_op(8); \
756 map_ptr++; \
757 } \
758
759// Draws a partial tile from a tilemap clipped against the left edge of the
760// screen.
761
762#define partial_tile_right_map(combine_op, color_depth, alpha_op) \
763 single_tile_map(partial_tile_right, combine_op, color_depth, alpha_op); \
764 map_ptr++ \
765
766// Draws a partial tile from a tilemap clipped against both edges of the
767// screen.
768
769#define partial_tile_mid_map(combine_op, color_depth, alpha_op) \
770 single_tile_map(partial_tile_mid, combine_op, color_depth, alpha_op) \
771
772// Draws a partial tile from a tilemap clipped against the right edge of the
773// screen.
774
775#define partial_tile_left_map(combine_op, color_depth, alpha_op) \
776 single_tile_map(partial_tile_left, combine_op, color_depth, alpha_op) \
777
778
779// Advances a non-flipped 4bpp obj to the next tile.
780
781#define obj_advance_noflip_4bpp() \
782 tile_ptr += 32 \
783
784
785// Advances a non-flipped 8bpp obj to the next tile.
786
787#define obj_advance_noflip_8bpp() \
788 tile_ptr += 64 \
789
790
791// Advances a flipped 4bpp obj to the next tile.
792
793#define obj_advance_flip_4bpp() \
794 tile_ptr -= 32 \
795
796
797// Advances a flipped 8bpp obj to the next tile.
798
799#define obj_advance_flip_8bpp() \
800 tile_ptr -= 64 \
801
802
803
804// Draws multiple sequential tiles from an obj, flip_op determines if it should
805// be flipped or not (set to flip or noflip)
806
807#define multiple_tile_obj(combine_op, color_depth, alpha_op, flip_op) \
808 for(i = 0; i < tile_run; i++) \
809 { \
810 tile_##flip_op##_##color_depth(combine_op, alpha_op); \
811 obj_advance_##flip_op##_##color_depth(); \
812 advance_dest_ptr_##combine_op(8); \
813 } \
814
815
816// Draws an obj's tile clipped against the left side of the screen
817
818#define partial_tile_right_obj(combine_op, color_depth, alpha_op, flip_op) \
819 partial_tile_right_##flip_op##_##color_depth(combine_op, alpha_op); \
820 obj_advance_##flip_op##_##color_depth() \
821
822// Draws an obj's tile clipped against both sides of the screen
823
824#define partial_tile_mid_obj(combine_op, color_depth, alpha_op, flip_op) \
825 partial_tile_mid_##flip_op##_##color_depth(combine_op, alpha_op) \
826
827// Draws an obj's tile clipped against the right side of the screen
828
829#define partial_tile_left_obj(combine_op, color_depth, alpha_op, flip_op) \
830 partial_tile_left_##flip_op##_##color_depth(combine_op, alpha_op) \
831
832
833// Extra variables specific for 8bpp/4bpp tile renderers.
834
835#define tile_extra_variables_8bpp() \
836
837#define tile_extra_variables_4bpp() \
838 u32 current_palette \
839
840
841// Byte lengths of complete tiles and tile rows in 4bpp and 8bpp.
842
843#define tile_width_4bpp 4
844#define tile_size_4bpp 32
845#define tile_width_8bpp 8
846#define tile_size_8bpp 64
847
848
849// Render a single scanline of text tiles
850
851#define tile_render(color_depth, combine_op, alpha_op) \
852{ \
853 u32 vertical_pixel_offset = (vertical_offset % 8) * \
854 tile_width_##color_depth; \
855 u32 vertical_pixel_flip = \
856 ((tile_size_##color_depth - tile_width_##color_depth) - \
857 vertical_pixel_offset) - vertical_pixel_offset; \
858 tile_extra_variables_##color_depth(); \
859 u8 *tile_base = vram + (((bg_control >> 2) & 0x03) * (1024 * 16)) + \
860 vertical_pixel_offset; \
861 u32 pixel_run = 256 - (horizontal_offset % 256); \
862 u32 current_tile; \
863 \
864 map_base += ((vertical_offset % 256) / 8) * 32; \
865 partial_tile_offset = (horizontal_offset % 8); \
866 \
867 if(pixel_run >= end) \
868 { \
869 if(partial_tile_offset) \
870 { \
871 partial_tile_run = 8 - partial_tile_offset; \
872 if(end < partial_tile_run) \
873 { \
874 partial_tile_run = end; \
875 partial_tile_mid_map(combine_op, color_depth, alpha_op); \
876 return; \
877 } \
878 else \
879 { \
880 end -= partial_tile_run; \
881 partial_tile_right_map(combine_op, color_depth, alpha_op); \
882 } \
883 } \
884 \
885 tile_run = end / 8; \
886 multiple_tile_map(combine_op, color_depth, alpha_op); \
887 \
888 partial_tile_run = end % 8; \
889 \
890 if(partial_tile_run) \
891 { \
892 partial_tile_left_map(combine_op, color_depth, alpha_op); \
893 } \
894 } \
895 else \
896 { \
897 if(partial_tile_offset) \
898 { \
899 partial_tile_run = 8 - partial_tile_offset; \
900 partial_tile_right_map(combine_op, color_depth, alpha_op); \
901 } \
902 \
903 tile_run = (pixel_run - partial_tile_run) / 8; \
904 multiple_tile_map(combine_op, color_depth, alpha_op); \
905 map_ptr = second_ptr; \
906 end -= pixel_run; \
907 tile_run = end / 8; \
908 multiple_tile_map(combine_op, color_depth, alpha_op); \
909 \
910 partial_tile_run = end % 8; \
911 if(partial_tile_run) \
912 { \
913 partial_tile_left_map(combine_op, color_depth, alpha_op); \
914 } \
915 } \
916} \
917
918#define render_scanline_dest_normal u16
919#define render_scanline_dest_alpha u32
920#define render_scanline_dest_alpha_obj u32
921#define render_scanline_dest_color16 u16
922#define render_scanline_dest_color32 u32
923#define render_scanline_dest_partial_alpha u32
924#define render_scanline_dest_copy_tile u16
925#define render_scanline_dest_copy_bitmap u16
926
927
928// If rendering a scanline that is not a target A then there's no point in
929// keeping what's underneath it because it can't blend with it.
930
931#define render_scanline_skip_alpha(bg_type, combine_op) \
932 if((pixel_combine & 0x00000200) == 0) \
933 { \
934 render_scanline_##bg_type##_##combine_op##_color32(layer, \
935 start, end, scanline); \
936 return; \
937 } \
938
939
940#ifdef RENDER_COLOR16_NORMAL
941
942#define render_scanline_extra_variables_base_normal(bg_type) \
943 const u32 pixel_combine = 0 \
944
945#else
946
947#define render_scanline_extra_variables_base_normal(bg_type) \
948 u16 *palette = palette_ram_converted \
949
950#endif
951
952
953#define render_scanline_extra_variables_base_alpha(bg_type) \
954 u32 bg_combine = color_combine_mask(5); \
955 u32 pixel_combine = color_combine_mask(layer) | (bg_combine << 16); \
956 render_scanline_skip_alpha(bg_type, base) \
957
958#define render_scanline_extra_variables_base_color() \
959 u32 bg_combine = color_combine_mask(5); \
960 u32 pixel_combine = color_combine_mask(layer) \
961
962#define render_scanline_extra_variables_base_color16(bg_type) \
963 render_scanline_extra_variables_base_color() \
964
965#define render_scanline_extra_variables_base_color32(bg_type) \
966 render_scanline_extra_variables_base_color() \
967
968
969#define render_scanline_extra_variables_transparent_normal(bg_type) \
970 render_scanline_extra_variables_base_normal(bg_type) \
971
972#define render_scanline_extra_variables_transparent_alpha(bg_type) \
973 u32 pixel_combine = color_combine_mask(layer); \
974 render_scanline_skip_alpha(bg_type, transparent) \
975
976#define render_scanline_extra_variables_transparent_color() \
977 u32 pixel_combine = color_combine_mask(layer) \
978
979#define render_scanline_extra_variables_transparent_color16(bg_type) \
980 render_scanline_extra_variables_transparent_color() \
981
982#define render_scanline_extra_variables_transparent_color32(bg_type) \
983 render_scanline_extra_variables_transparent_color() \
984
985
986
987
988
989// Map widths and heights
990
991u32 map_widths[] = { 256, 512, 256, 512 };
992u32 map_heights[] = { 256, 256, 512, 512 };
993
994// Build text scanline rendering functions.
995
996#define render_scanline_text_builder(combine_op, alpha_op) \
997void render_scanline_text_##combine_op##_##alpha_op(u32 layer, \
998 u32 start, u32 end, void *scanline) \
999{ \
1000 render_scanline_extra_variables_##combine_op##_##alpha_op(text); \
1001 u32 bg_control = io_registers[REG_BG0CNT + layer]; \
1002 u32 map_size = (bg_control >> 14) & 0x03; \
1003 u32 map_width = map_widths[map_size]; \
1004 u32 map_height = map_heights[map_size]; \
1005 u32 horizontal_offset = \
1006 (io_registers[REG_BG0HOFS + (layer * 2)] + start) % 512; \
1007 u32 vertical_offset = (io_registers[REG_VCOUNT] + \
1008 io_registers[REG_BG0VOFS + (layer * 2)]) % 512; \
1009 u32 current_pixel; \
1010 u32 current_pixels; \
1011 u32 partial_tile_run = 0; \
1012 u32 partial_tile_offset; \
1013 u32 tile_run; \
1014 u32 i; \
1015 render_scanline_dest_##alpha_op *dest_ptr = \
1016 ((render_scanline_dest_##alpha_op *)scanline) + start; \
1017 \
1018 u16 *map_base = (u16 *)(vram + ((bg_control >> 8) & 0x1F) * (1024 * 2)); \
1019 u16 *map_ptr, *second_ptr; \
1020 u8 *tile_ptr; \
1021 \
1022 end -= start; \
1023 \
1024 if((map_size & 0x02) && (vertical_offset >= 256)) \
1025 { \
1026 map_base += ((map_width / 8) * 32) + \
1027 (((vertical_offset - 256) / 8) * 32); \
1028 } \
1029 else \
1030 { \
1031 map_base += (((vertical_offset % 256) / 8) * 32); \
1032 } \
1033 \
1034 if(map_size & 0x01) \
1035 { \
1036 if(horizontal_offset >= 256) \
1037 { \
1038 horizontal_offset -= 256; \
1039 map_ptr = map_base + (32 * 32) + (horizontal_offset / 8); \
1040 second_ptr = map_base; \
1041 } \
1042 else \
1043 { \
1044 map_ptr = map_base + (horizontal_offset / 8); \
1045 second_ptr = map_base + (32 * 32); \
1046 } \
1047 } \
1048 else \
1049 { \
1050 horizontal_offset %= 256; \
1051 map_ptr = map_base + (horizontal_offset / 8); \
1052 second_ptr = map_base; \
1053 } \
1054 \
1055 if(bg_control & 0x80) \
1056 { \
1057 tile_render(8bpp, combine_op, alpha_op); \
1058 } \
1059 else \
1060 { \
1061 tile_render(4bpp, combine_op, alpha_op); \
1062 } \
1063} \
1064
1065render_scanline_text_builder(base, normal);
1066render_scanline_text_builder(transparent, normal);
1067render_scanline_text_builder(base, color16);
1068render_scanline_text_builder(transparent, color16);
1069render_scanline_text_builder(base, color32);
1070render_scanline_text_builder(transparent, color32);
1071render_scanline_text_builder(base, alpha);
1072render_scanline_text_builder(transparent, alpha);
1073
1074
1075s32 affine_reference_x[2];
1076s32 affine_reference_y[2];
1077
1078#define affine_render_bg_pixel_normal() \
1079 current_pixel = palette_ram_converted[0] \
1080
1081#define affine_render_bg_pixel_alpha() \
1082 current_pixel = bg_combine \
1083
1084#define affine_render_bg_pixel_color16() \
1085 affine_render_bg_pixel_alpha() \
1086
1087#define affine_render_bg_pixel_color32() \
1088 affine_render_bg_pixel_alpha() \
1089
1090#define affine_render_bg_pixel_base(alpha_op) \
1091 affine_render_bg_pixel_##alpha_op() \
1092
1093#define affine_render_bg_pixel_transparent(alpha_op) \
1094
1095#define affine_render_bg_pixel_copy(alpha_op) \
1096
1097#define affine_render_bg_base(alpha_op) \
1098 dest_ptr[0] = current_pixel
1099
1100#define affine_render_bg_transparent(alpha_op) \
1101
1102#define affine_render_bg_copy(alpha_op) \
1103
1104#define affine_render_bg_remainder_base(alpha_op) \
1105 affine_render_bg_pixel_##alpha_op(); \
1106 for(; i < end; i++) \
1107 { \
1108 affine_render_bg_base(alpha_op); \
1109 advance_dest_ptr_base(1); \
1110 } \
1111
1112#define affine_render_bg_remainder_transparent(alpha_op) \
1113
1114#define affine_render_bg_remainder_copy(alpha_op) \
1115
1116#define affine_render_next(combine_op) \
1117 source_x += dx; \
1118 source_y += dy; \
1119 advance_dest_ptr_##combine_op(1) \
1120
1121#define affine_render_scale_offset() \
1122 tile_base += ((pixel_y % 8) * 8); \
1123 map_base += (pixel_y / 8) << map_pitch \
1124
1125#define affine_render_scale_pixel(combine_op, alpha_op) \
1126 map_offset = (pixel_x / 8); \
1127 if(map_offset != last_map_offset) \
1128 { \
1129 tile_ptr = tile_base + (map_base[map_offset] * 64); \
1130 last_map_offset = map_offset; \
1131 } \
1132 tile_ptr = tile_base + (map_base[(pixel_x / 8)] * 64); \
1133 current_pixel = tile_ptr[(pixel_x % 8)]; \
1134 tile_8bpp_draw_##combine_op(0, none, 0, alpha_op); \
1135 affine_render_next(combine_op) \
1136
1137#define affine_render_scale(combine_op, alpha_op) \
1138{ \
1139 pixel_y = source_y >> 8; \
1140 u32 i = 0; \
1141 affine_render_bg_pixel_##combine_op(alpha_op); \
1142 if((u32)pixel_y < (u32)width_height) \
1143 { \
1144 affine_render_scale_offset(); \
1145 for(; i < end; i++) \
1146 { \
1147 pixel_x = source_x >> 8; \
1148 \
1149 if((u32)pixel_x < (u32)width_height) \
1150 { \
1151 break; \
1152 } \
1153 \
1154 affine_render_bg_##combine_op(alpha_op); \
1155 affine_render_next(combine_op); \
1156 } \
1157 \
1158 for(; i < end; i++) \
1159 { \
1160 pixel_x = source_x >> 8; \
1161 \
1162 if((u32)pixel_x >= (u32)width_height) \
1163 break; \
1164 \
1165 affine_render_scale_pixel(combine_op, alpha_op); \
1166 } \
1167 } \
1168 affine_render_bg_remainder_##combine_op(alpha_op); \
1169} \
1170
1171#define affine_render_scale_wrap(combine_op, alpha_op) \
1172{ \
1173 u32 wrap_mask = width_height - 1; \
1174 pixel_y = (source_y >> 8) & wrap_mask; \
1175 if((u32)pixel_y < (u32)width_height) \
1176 { \
1177 affine_render_scale_offset(); \
1178 for(i = 0; i < end; i++) \
1179 { \
1180 pixel_x = (source_x >> 8) & wrap_mask; \
1181 affine_render_scale_pixel(combine_op, alpha_op); \
1182 } \
1183 } \
1184} \
1185
1186
1187#define affine_render_rotate_pixel(combine_op, alpha_op) \
1188 map_offset = (pixel_x / 8) + ((pixel_y / 8) << map_pitch); \
1189 if(map_offset != last_map_offset) \
1190 { \
1191 tile_ptr = tile_base + (map_base[map_offset] * 64); \
1192 last_map_offset = map_offset; \
1193 } \
1194 \
1195 current_pixel = tile_ptr[(pixel_x % 8) + ((pixel_y % 8) * 8)]; \
1196 tile_8bpp_draw_##combine_op(0, none, 0, alpha_op); \
1197 affine_render_next(combine_op) \
1198
1199#define affine_render_rotate(combine_op, alpha_op) \
1200{ \
1201 affine_render_bg_pixel_##combine_op(alpha_op); \
1202 for(i = 0; i < end; i++) \
1203 { \
1204 pixel_x = source_x >> 8; \
1205 pixel_y = source_y >> 8; \
1206 \
1207 if(((u32)pixel_x < (u32)width_height) && \
1208 ((u32)pixel_y < (u32)width_height)) \
1209 { \
1210 break; \
1211 } \
1212 affine_render_bg_##combine_op(alpha_op); \
1213 affine_render_next(combine_op); \
1214 } \
1215 \
1216 for(; i < end; i++) \
1217 { \
1218 pixel_x = source_x >> 8; \
1219 pixel_y = source_y >> 8; \
1220 \
1221 if(((u32)pixel_x >= (u32)width_height) || \
1222 ((u32)pixel_y >= (u32)width_height)) \
1223 { \
1224 affine_render_bg_remainder_##combine_op(alpha_op); \
1225 break; \
1226 } \
1227 \
1228 affine_render_rotate_pixel(combine_op, alpha_op); \
1229 } \
1230} \
1231
1232#define affine_render_rotate_wrap(combine_op, alpha_op) \
1233{ \
1234 u32 wrap_mask = width_height - 1; \
1235 for(i = 0; i < end; i++) \
1236 { \
1237 pixel_x = (source_x >> 8) & wrap_mask; \
1238 pixel_y = (source_y >> 8) & wrap_mask; \
1239 \
1240 affine_render_rotate_pixel(combine_op, alpha_op); \
1241 } \
1242} \
1243
1244
1245// Build affine background renderers.
1246
1247#define render_scanline_affine_builder(combine_op, alpha_op) \
1248void render_scanline_affine_##combine_op##_##alpha_op(u32 layer, \
1249 u32 start, u32 end, void *scanline) \
1250{ \
1251 render_scanline_extra_variables_##combine_op##_##alpha_op(affine); \
1252 u32 bg_control = io_registers[REG_BG0CNT + layer]; \
1253 u32 current_pixel; \
1254 s32 source_x, source_y; \
1255 u32 vcount = io_registers[REG_VCOUNT]; \
1256 u32 pixel_x, pixel_y; \
1257 u32 layer_offset = (layer - 2) * 8; \
1258 s32 dx, dy; \
1259 u32 map_size = (bg_control >> 14) & 0x03; \
1260 u32 width_height = 1 << (7 + map_size); \
1261 u32 map_pitch = map_size + 4; \
1262 u8 *map_base = vram + (((bg_control >> 8) & 0x1F) * (1024 * 2)); \
1263 u8 *tile_base = vram + (((bg_control >> 2) & 0x03) * (1024 * 16)); \
1264 u8 *tile_ptr; \
1265 u32 map_offset, last_map_offset = (u32)-1; \
1266 u32 i; \
1267 render_scanline_dest_##alpha_op *dest_ptr = \
1268 ((render_scanline_dest_##alpha_op *)scanline) + start; \
1269 \
1270 dx = (s16)io_registers[REG_BG2PA + layer_offset]; \
1271 dy = (s16)io_registers[REG_BG2PC + layer_offset]; \
1272 source_x = affine_reference_x[layer - 2] + (start * dx); \
1273 source_y = affine_reference_y[layer - 2] + (start * dy); \
1274 \
1275 end -= start; \
1276 \
1277 switch(((bg_control >> 12) & 0x02) | (dy != 0)) \
1278 { \
1279 case 0x00: \
1280 affine_render_scale(combine_op, alpha_op); \
1281 break; \
1282 \
1283 case 0x01: \
1284 affine_render_rotate(combine_op, alpha_op); \
1285 break; \
1286 \
1287 case 0x02: \
1288 affine_render_scale_wrap(combine_op, alpha_op); \
1289 break; \
1290 \
1291 case 0x03: \
1292 affine_render_rotate_wrap(combine_op, alpha_op); \
1293 break; \
1294 } \
1295} \
1296
1297render_scanline_affine_builder(base, normal);
1298render_scanline_affine_builder(transparent, normal);
1299render_scanline_affine_builder(base, color16);
1300render_scanline_affine_builder(transparent, color16);
1301render_scanline_affine_builder(base, color32);
1302render_scanline_affine_builder(transparent, color32);
1303render_scanline_affine_builder(base, alpha);
1304render_scanline_affine_builder(transparent, alpha);
1305
1306
1307#define bitmap_render_pixel_mode3(alpha_op) \
1308 convert_palette(current_pixel); \
1309 *dest_ptr = current_pixel \
1310
1311#define bitmap_render_pixel_mode4(alpha_op) \
1312 tile_expand_base_##alpha_op(0) \
1313
1314#define bitmap_render_pixel_mode5(alpha_op) \
1315 bitmap_render_pixel_mode3(alpha_op) \
1316
1317
1318#define bitmap_render_scale(type, alpha_op, width, height) \
1319 pixel_y = (source_y >> 8); \
1320 if((u32)pixel_y < (u32)height) \
1321 { \
1322 pixel_x = (source_x >> 8); \
1323 src_ptr += (pixel_y * width); \
1324 if(dx == 0x100) \
1325 { \
1326 if(pixel_x < 0) \
1327 { \
1328 end += pixel_x; \
1329 dest_ptr -= pixel_x; \
1330 pixel_x = 0; \
1331 } \
1332 else \
1333 \
1334 if(pixel_x > 0) \
1335 { \
1336 src_ptr += pixel_x; \
1337 } \
1338 \
1339 if((pixel_x + end) >= width) \
1340 end = (width - pixel_x); \
1341 \
1342 for(i = 0; (s32)i < (s32)end; i++) \
1343 { \
1344 current_pixel = *src_ptr; \
1345 bitmap_render_pixel_##type(alpha_op); \
1346 src_ptr++; \
1347 dest_ptr++; \
1348 } \
1349 } \
1350 else \
1351 { \
1352 if((u32)(source_y >> 8) < (u32)height) \
1353 { \
1354 for(i = 0; i < end; i++) \
1355 { \
1356 pixel_x = (source_x >> 8); \
1357 \
1358 if((u32)pixel_x < (u32)width) \
1359 break; \
1360 \
1361 source_x += dx; \
1362 dest_ptr++; \
1363 } \
1364 \
1365 for(; i < end; i++) \
1366 { \
1367 pixel_x = (source_x >> 8); \
1368 \
1369 if((u32)pixel_x >= (u32)width) \
1370 break; \
1371 \
1372 current_pixel = src_ptr[pixel_x]; \
1373 bitmap_render_pixel_##type(alpha_op); \
1374 \
1375 source_x += dx; \
1376 dest_ptr++; \
1377 } \
1378 } \
1379 } \
1380 } \
1381
1382#define bitmap_render_rotate(type, alpha_op, width, height) \
1383 for(i = 0; i < end; i++) \
1384 { \
1385 pixel_x = source_x >> 8; \
1386 pixel_y = source_y >> 8; \
1387 \
1388 if(((u32)pixel_x < (u32)width) && ((u32)pixel_y < (u32)height)) \
1389 break; \
1390 \
1391 source_x += dx; \
1392 source_y += dy; \
1393 dest_ptr++; \
1394 } \
1395 \
1396 for(; i < end; i++) \
1397 { \
1398 pixel_x = (source_x >> 8); \
1399 pixel_y = (source_y >> 8); \
1400 \
1401 if(((u32)pixel_x >= (u32)width) || ((u32)pixel_y >= (u32)height)) \
1402 break; \
1403 \
1404 current_pixel = src_ptr[pixel_x + (pixel_y * width)]; \
1405 bitmap_render_pixel_##type(alpha_op); \
1406 \
1407 source_x += dx; \
1408 source_y += dy; \
1409 dest_ptr++; \
1410 } \
1411
1412
1413#define render_scanline_vram_setup_mode3() \
1414 u16 *src_ptr = (u16 *)vram \
1415
1416#define render_scanline_vram_setup_mode5() \
1417 u16 *src_ptr; \
1418 if(io_registers[REG_DISPCNT] & 0x10) \
1419 src_ptr = (u16 *)(vram + 0xA000); \
1420 else \
1421 src_ptr = (u16 *)vram \
1422
1423
1424#ifdef RENDER_COLOR16_NORMAL
1425
1426#define render_scanline_vram_setup_mode4() \
1427 const u32 pixel_combine = 0; \
1428 u8 *src_ptr; \
1429 if(io_registers[REG_DISPCNT] & 0x10) \
1430 src_ptr = vram + 0xA000; \
1431 else \
1432 src_ptr = vram \
1433
1434
1435#else
1436
1437#define render_scanline_vram_setup_mode4() \
1438 u16 *palette = palette_ram_converted; \
1439 u8 *src_ptr; \
1440 if(io_registers[REG_DISPCNT] & 0x10) \
1441 src_ptr = vram + 0xA000; \
1442 else \
1443 src_ptr = vram \
1444
1445#endif
1446
1447
1448
1449// Build bitmap scanline rendering functions.
1450
1451#define render_scanline_bitmap_builder(type, alpha_op, width, height) \
1452void render_scanline_bitmap_##type##_##alpha_op(u32 start, u32 end, \
1453 void *scanline) \
1454{ \
1455 u32 bg_control = io_registers[REG_BG2CNT]; \
1456 u32 current_pixel; \
1457 s32 source_x, source_y; \
1458 u32 vcount = io_registers[REG_VCOUNT]; \
1459 s32 pixel_x, pixel_y; \
1460 \
1461 s32 dx = (s16)io_registers[REG_BG2PA]; \
1462 s32 dy = (s16)io_registers[REG_BG2PC]; \
1463 \
1464 u32 i; \
1465 \
1466 render_scanline_dest_##alpha_op *dest_ptr = \
1467 ((render_scanline_dest_##alpha_op *)scanline) + start; \
1468 render_scanline_vram_setup_##type(); \
1469 \
1470 end -= start; \
1471 \
1472 source_x = affine_reference_x[0] + (start * dx); \
1473 source_y = affine_reference_y[0] + (start * dy); \
1474 \
1475 if(dy == 0) \
1476 { \
1477 bitmap_render_scale(type, alpha_op, width, height); \
1478 } \
1479 else \
1480 { \
1481 bitmap_render_rotate(type, alpha_op, width, height); \
1482 } \
1483} \
1484
1485render_scanline_bitmap_builder(mode3, normal, 240, 160);
1486render_scanline_bitmap_builder(mode4, normal, 240, 160);
1487render_scanline_bitmap_builder(mode5, normal, 160, 128);
1488
1489
1490// Fill in the renderers for a layer based on the mode type,
1491
1492#define tile_layer_render_functions(type) \
1493{ \
1494 render_scanline_##type##_base_normal, \
1495 render_scanline_##type##_transparent_normal, \
1496 render_scanline_##type##_base_alpha, \
1497 render_scanline_##type##_transparent_alpha, \
1498 render_scanline_##type##_base_color16, \
1499 render_scanline_##type##_transparent_color16, \
1500 render_scanline_##type##_base_color32, \
1501 render_scanline_##type##_transparent_color32 \
1502} \
1503
1504
1505// Use if a layer is unsupported for that mode.
1506
1507#define tile_layer_render_null() \
1508{ \
1509 NULL, NULL, NULL, NULL \
1510} \
1511
1512#define bitmap_layer_render_functions(type) \
1513{ \
1514 render_scanline_bitmap_##type##_normal \
1515} \
1516
1517// Structs containing functions to render the layers for each mode, for
1518// each render type.
1519tile_layer_render_struct tile_mode_renderers[3][4] =
1520{
1521 {
1522 tile_layer_render_functions(text), tile_layer_render_functions(text),
1523 tile_layer_render_functions(text), tile_layer_render_functions(text)
1524 },
1525 {
1526 tile_layer_render_functions(text), tile_layer_render_functions(text),
1527 tile_layer_render_functions(affine), tile_layer_render_functions(text)
1528 },
1529 {
1530 tile_layer_render_functions(text), tile_layer_render_functions(text),
1531 tile_layer_render_functions(affine), tile_layer_render_functions(affine)
1532 }
1533};
1534
1535bitmap_layer_render_struct bitmap_mode_renderers[3] =
1536{
1537 bitmap_layer_render_functions(mode3),
1538 bitmap_layer_render_functions(mode4),
1539 bitmap_layer_render_functions(mode5)
1540};
1541
1542
1543#define render_scanline_layer_functions_tile() \
1544 tile_layer_render_struct *layer_renderers = \
1545 tile_mode_renderers[dispcnt & 0x07] \
1546
1547#define render_scanline_layer_functions_bitmap() \
1548 bitmap_layer_render_struct *layer_renderers = \
1549 bitmap_mode_renderers + ((dispcnt & 0x07) - 3) \
1550
1551
1552// Adjust a flipped obj's starting position
1553
1554#define obj_tile_offset_noflip(color_depth) \
1555
1556#define obj_tile_offset_flip(color_depth) \
1557 + (tile_size_##color_depth * ((obj_width - 8) / 8)) \
1558
1559
1560// Adjust the obj's starting point if it goes too far off the left edge of \
1561// the screen. \
1562
1563#define obj_tile_right_offset_noflip(color_depth) \
1564 tile_ptr += (partial_tile_offset / 8) * tile_size_##color_depth \
1565
1566#define obj_tile_right_offset_flip(color_depth) \
1567 tile_ptr -= (partial_tile_offset / 8) * tile_size_##color_depth \
1568
1569// Get the current row offset into an obj in 1D map space
1570
1571#define obj_tile_offset_1D(color_depth, flip_op) \
1572 tile_ptr = tile_base + ((obj_attribute_2 & 0x3FF) * 32) \
1573 + ((vertical_offset / 8) * (obj_width / 8) * tile_size_##color_depth) \
1574 + ((vertical_offset % 8) * tile_width_##color_depth) \
1575 obj_tile_offset_##flip_op(color_depth) \
1576
1577// Get the current row offset into an obj in 2D map space
1578
1579#define obj_tile_offset_2D(color_depth, flip_op) \
1580 tile_ptr = tile_base + ((obj_attribute_2 & 0x3FF) * 32) \
1581 + ((vertical_offset / 8) * 1024) \
1582 + ((vertical_offset % 8) * tile_width_##color_depth) \
1583 obj_tile_offset_##flip_op(color_depth) \
1584
1585
1586// Get the palette for 4bpp obj.
1587
1588#define obj_get_palette_4bpp() \
1589 current_palette = (obj_attribute_2 >> 8) & 0xF0 \
1590
1591#define obj_get_palette_8bpp() \
1592
1593
1594// Render the current row of an obj.
1595
1596#define obj_render(combine_op, color_depth, alpha_op, map_space, flip_op) \
1597{ \
1598 obj_get_palette_##color_depth(); \
1599 obj_tile_offset_##map_space(color_depth, flip_op); \
1600 \
1601 if(obj_x < (s32)start) \
1602 { \
1603 dest_ptr = scanline + start; \
1604 pixel_run = obj_width - (start - obj_x); \
1605 if((s32)pixel_run > 0) \
1606 { \
1607 if((obj_x + obj_width) >= end) \
1608 { \
1609 pixel_run = end - start; \
1610 partial_tile_offset = start - obj_x; \
1611 obj_tile_right_offset_##flip_op(color_depth); \
1612 partial_tile_offset %= 8; \
1613 \
1614 if(partial_tile_offset) \
1615 { \
1616 partial_tile_run = 8 - partial_tile_offset; \
1617 if((s32)pixel_run < (s32)partial_tile_run) \
1618 { \
1619 if((s32)pixel_run > 0) \
1620 { \
1621 partial_tile_run = pixel_run; \
1622 partial_tile_mid_obj(combine_op, color_depth, alpha_op, \
1623 flip_op); \
1624 } \
1625 continue; \
1626 } \
1627 else \
1628 { \
1629 pixel_run -= partial_tile_run; \
1630 partial_tile_right_obj(combine_op, color_depth, alpha_op, \
1631 flip_op); \
1632 } \
1633 } \
1634 tile_run = pixel_run / 8; \
1635 multiple_tile_obj(combine_op, color_depth, alpha_op, flip_op); \
1636 partial_tile_run = pixel_run % 8; \
1637 if(partial_tile_run) \
1638 { \
1639 partial_tile_left_obj(combine_op, color_depth, alpha_op, \
1640 flip_op); \
1641 } \
1642 } \
1643 else \
1644 { \
1645 partial_tile_offset = start - obj_x; \
1646 obj_tile_right_offset_##flip_op(color_depth); \
1647 partial_tile_offset %= 8; \
1648 if(partial_tile_offset) \
1649 { \
1650 partial_tile_run = 8 - partial_tile_offset; \
1651 partial_tile_right_obj(combine_op, color_depth, alpha_op, \
1652 flip_op); \
1653 } \
1654 tile_run = pixel_run / 8; \
1655 multiple_tile_obj(combine_op, color_depth, alpha_op, flip_op); \
1656 } \
1657 } \
1658 } \
1659 else \
1660 \
1661 if((obj_x + obj_width) >= end) \
1662 { \
1663 pixel_run = end - obj_x; \
1664 if((s32)pixel_run > 0) \
1665 { \
1666 dest_ptr = scanline + obj_x; \
1667 tile_run = pixel_run / 8; \
1668 multiple_tile_obj(combine_op, color_depth, alpha_op, flip_op); \
1669 partial_tile_run = pixel_run % 8; \
1670 if(partial_tile_run) \
1671 { \
1672 partial_tile_left_obj(combine_op, color_depth, alpha_op, flip_op); \
1673 } \
1674 } \
1675 } \
1676 else \
1677 { \
1678 dest_ptr = scanline + obj_x; \
1679 tile_run = obj_width / 8; \
1680 multiple_tile_obj(combine_op, color_depth, alpha_op, flip_op); \
1681 } \
1682} \
1683
1684#define obj_scale_offset_1D(color_depth) \
1685 tile_ptr = tile_base + ((obj_attribute_2 & 0x3FF) * 32) \
1686 + ((vertical_offset / 8) * (max_x / 8) * tile_size_##color_depth) \
1687 + ((vertical_offset % 8) * tile_width_##color_depth) \
1688
1689// Get the current row offset into an obj in 2D map space
1690
1691#define obj_scale_offset_2D(color_depth) \
1692 tile_ptr = tile_base + ((obj_attribute_2 & 0x3FF) * 32) \
1693 + ((vertical_offset / 8) * 1024) \
1694 + ((vertical_offset % 8) * tile_width_##color_depth) \
1695
1696#define obj_render_scale_pixel_4bpp(combine_op, alpha_op) \
1697 if(tile_x & 0x01) \
1698 { \
1699 current_pixel = tile_ptr[tile_map_offset + ((tile_x >> 1) & 0x03)] >> 4; \
1700 } \
1701 else \
1702 { \
1703 current_pixel = \
1704 tile_ptr[tile_map_offset + ((tile_x >> 1) & 0x03)] & 0x0F; \
1705 } \
1706 \
1707 tile_4bpp_draw_##combine_op(0, none, 0, alpha_op) \
1708
1709
1710#define obj_render_scale_pixel_8bpp(combine_op, alpha_op) \
1711 current_pixel = tile_ptr[tile_map_offset + (tile_x & 0x07)]; \
1712 tile_8bpp_draw_##combine_op(0, none, 0, alpha_op); \
1713
1714#define obj_render_scale(combine_op, color_depth, alpha_op, map_space) \
1715{ \
1716 u32 vertical_offset; \
1717 source_y += (y_delta * dmy); \
1718 vertical_offset = (source_y >> 8); \
1719 if((u32)vertical_offset < (u32)max_y) \
1720 { \
1721 obj_scale_offset_##map_space(color_depth); \
1722 source_x += (y_delta * dmx) - (middle_x * dx); \
1723 \
1724 for(i = 0; i < obj_width; i++) \
1725 { \
1726 tile_x = (source_x >> 8); \
1727 \
1728 if((u32)tile_x < (u32)max_x) \
1729 break; \
1730 \
1731 source_x += dx; \
1732 advance_dest_ptr_##combine_op(1); \
1733 } \
1734 \
1735 for(; i < obj_width; i++) \
1736 { \
1737 tile_x = (source_x >> 8); \
1738 \
1739 if((u32)tile_x >= (u32)max_x) \
1740 break; \
1741 \
1742 tile_map_offset = (tile_x >> 3) * tile_size_##color_depth; \
1743 obj_render_scale_pixel_##color_depth(combine_op, alpha_op); \
1744 \
1745 source_x += dx; \
1746 advance_dest_ptr_##combine_op(1); \
1747 } \
1748 } \
1749} \
1750
1751
1752#define obj_rotate_offset_1D(color_depth) \
1753 obj_tile_pitch = (max_x / 8) * tile_size_##color_depth \
1754
1755#define obj_rotate_offset_2D(color_depth) \
1756 obj_tile_pitch = 1024 \
1757
1758#define obj_render_rotate_pixel_4bpp(combine_op, alpha_op) \
1759 if(tile_x & 0x01) \
1760 { \
1761 current_pixel = tile_ptr[tile_map_offset + \
1762 ((tile_x >> 1) & 0x03) + ((tile_y & 0x07) * obj_pitch)] >> 4; \
1763 } \
1764 else \
1765 { \
1766 current_pixel = tile_ptr[tile_map_offset + \
1767 ((tile_x >> 1) & 0x03) + ((tile_y & 0x07) * obj_pitch)] & 0x0F; \
1768 } \
1769 \
1770 tile_4bpp_draw_##combine_op(0, none, 0, alpha_op) \
1771
1772#define obj_render_rotate_pixel_8bpp(combine_op, alpha_op) \
1773 current_pixel = tile_ptr[tile_map_offset + \
1774 (tile_x & 0x07) + ((tile_y & 0x07) * obj_pitch)]; \
1775 \
1776 tile_8bpp_draw_##combine_op(0, none, 0, alpha_op) \
1777
1778#define obj_render_rotate(combine_op, color_depth, alpha_op, map_space) \
1779{ \
1780 tile_ptr = tile_base + ((obj_attribute_2 & 0x3FF) * 32); \
1781 obj_rotate_offset_##map_space(color_depth); \
1782 \
1783 source_x += (y_delta * dmx) - (middle_x * dx); \
1784 source_y += (y_delta * dmy) - (middle_x * dy); \
1785 \
1786 for(i = 0; i < obj_width; i++) \
1787 { \
1788 tile_x = (source_x >> 8); \
1789 tile_y = (source_y >> 8); \
1790 \
1791 if(((u32)tile_x < (u32)max_x) && ((u32)tile_y < (u32)max_y)) \
1792 break; \
1793 \
1794 source_x += dx; \
1795 source_y += dy; \
1796 advance_dest_ptr_##combine_op(1); \
1797 } \
1798 \
1799 for(; i < obj_width; i++) \
1800 { \
1801 tile_x = (source_x >> 8); \
1802 tile_y = (source_y >> 8); \
1803 \
1804 if(((u32)tile_x >= (u32)max_x) || ((u32)tile_y >= (u32)max_y)) \
1805 break; \
1806 \
1807 tile_map_offset = ((tile_x >> 3) * tile_size_##color_depth) + \
1808 ((tile_y >> 3) * obj_tile_pitch); \
1809 obj_render_rotate_pixel_##color_depth(combine_op, alpha_op); \
1810 \
1811 source_x += dx; \
1812 source_y += dy; \
1813 advance_dest_ptr_##combine_op(1); \
1814 } \
1815} \
1816
1817// Render the current row of an affine transformed OBJ.
1818
1819#define obj_render_affine(combine_op, color_depth, alpha_op, map_space) \
1820{ \
1821 s16 *params = oam_ram + (((obj_attribute_1 >> 9) & 0x1F) * 16); \
1822 s32 dx = params[3]; \
1823 s32 dmx = params[7]; \
1824 s32 dy = params[11]; \
1825 s32 dmy = params[15]; \
1826 s32 source_x, source_y; \
1827 s32 tile_x, tile_y; \
1828 u32 tile_offset; \
1829 u32 tile_map_offset; \
1830 s32 middle_x; \
1831 s32 middle_y; \
1832 s32 max_x = obj_width; \
1833 s32 max_y = obj_height; \
1834 s32 y_delta; \
1835 u32 obj_pitch = tile_width_##color_depth; \
1836 u32 obj_tile_pitch; \
1837 \
1838 middle_x = (obj_width / 2); \
1839 middle_y = (obj_height / 2); \
1840 \
1841 source_x = (middle_x << 8); \
1842 source_y = (middle_y << 8); \
1843 \
1844 \
1845 if(obj_attribute_0 & 0x200) \
1846 { \
1847 obj_width *= 2; \
1848 obj_height *= 2; \
1849 middle_x *= 2; \
1850 middle_y *= 2; \
1851 } \
1852 \
1853 if((s32)obj_x < (s32)start) \
1854 { \
1855 u32 x_delta = start - obj_x; \
1856 middle_x -= x_delta; \
1857 obj_width -= x_delta; \
1858 obj_x = start; \
1859 \
1860 if((s32)obj_width <= 0) \
1861 continue; \
1862 } \
1863 \
1864 if((s32)(obj_x + obj_width) >= (s32)end) \
1865 { \
1866 obj_width = end - obj_x; \
1867 \
1868 if((s32)obj_width <= 0) \
1869 continue; \
1870 } \
1871 dest_ptr = scanline + obj_x; \
1872 \
1873 y_delta = vcount - (obj_y + middle_y); \
1874 \
1875 obj_get_palette_##color_depth(); \
1876 \
1877 if(dy == 0) \
1878 { \
1879 obj_render_scale(combine_op, color_depth, alpha_op, map_space); \
1880 } \
1881 else \
1882 { \
1883 obj_render_rotate(combine_op, color_depth, alpha_op, map_space); \
1884 } \
1885} \
1886
1887u32 obj_width_table[] = { 8, 16, 32, 64, 16, 32, 32, 64, 8, 8, 16, 32 };
1888u32 obj_height_table[] = { 8, 16, 32, 64, 8, 8, 16, 32, 16, 32, 32, 64 };
1889
1890u8 obj_priority_list[5][160][128];
1891u32 obj_priority_count[5][160];
1892u32 obj_alpha_count[160];
1893
1894
1895// Build obj rendering functions
1896
1897#ifdef RENDER_COLOR16_NORMAL
1898
1899#define render_scanline_obj_extra_variables_normal(bg_type) \
1900 const u32 pixel_combine = (1 << 8) \
1901
1902#else
1903
1904#define render_scanline_obj_extra_variables_normal(bg_type) \
1905 u16 *palette = palette_ram_converted + 256 \
1906
1907#endif
1908
1909
1910#define render_scanline_obj_extra_variables_color() \
1911 u32 dest; \
1912 u32 pixel_combine = color_combine_mask(4) | (1 << 8) \
1913
1914#define render_scanline_obj_extra_variables_alpha_obj(map_space) \
1915 render_scanline_obj_extra_variables_color(); \
1916 if((pixel_combine & 0x00000200) == 0) \
1917 { \
1918 render_scanline_obj_color32_##map_space(priority, start, end, scanline); \
1919 return; \
1920 } \
1921
1922#define render_scanline_obj_extra_variables_color16(map_space) \
1923 render_scanline_obj_extra_variables_color() \
1924
1925#define render_scanline_obj_extra_variables_color32(map_space) \
1926 render_scanline_obj_extra_variables_color() \
1927
1928#define render_scanline_obj_extra_variables_partial_alpha(map_space) \
1929 render_scanline_obj_extra_variables_color(); \
1930 u32 base_pixel_combine = pixel_combine \
1931
1932#define render_scanline_obj_extra_variables_copy(type) \
1933 u32 bldcnt = io_registers[REG_BLDCNT]; \
1934 u32 dispcnt = io_registers[REG_DISPCNT]; \
1935 u32 obj_enable = io_registers[REG_WINOUT] >> 8; \
1936 render_scanline_layer_functions_##type(); \
1937 u32 copy_start, copy_end; \
1938 u16 copy_buffer[240]; \
1939 u16 *copy_ptr \
1940
1941#define render_scanline_obj_extra_variables_copy_tile(map_space) \
1942 render_scanline_obj_extra_variables_copy(tile) \
1943
1944#define render_scanline_obj_extra_variables_copy_bitmap(map_space) \
1945 render_scanline_obj_extra_variables_copy(bitmap) \
1946
1947
1948#define render_scanline_obj_main(combine_op, alpha_op, map_space) \
1949 if(obj_attribute_0 & 0x100) \
1950 { \
1951 if((obj_attribute_0 >> 13) & 0x01) \
1952 { \
1953 obj_render_affine(combine_op, 8bpp, alpha_op, map_space); \
1954 } \
1955 else \
1956 { \
1957 obj_render_affine(combine_op, 4bpp, alpha_op, map_space); \
1958 } \
1959 } \
1960 else \
1961 { \
1962 vertical_offset = vcount - obj_y; \
1963 \
1964 if((obj_attribute_1 >> 13) & 0x01) \
1965 vertical_offset = obj_height - vertical_offset - 1; \
1966 \
1967 switch(((obj_attribute_0 >> 12) & 0x02) | \
1968 ((obj_attribute_1 >> 12) & 0x01)) \
1969 { \
1970 case 0x0: \
1971 obj_render(combine_op, 4bpp, alpha_op, map_space, noflip); \
1972 break; \
1973 \
1974 case 0x1: \
1975 obj_render(combine_op, 4bpp, alpha_op, map_space, flip); \
1976 break; \
1977 \
1978 case 0x2: \
1979 obj_render(combine_op, 8bpp, alpha_op, map_space, noflip); \
1980 break; \
1981 \
1982 case 0x3: \
1983 obj_render(combine_op, 8bpp, alpha_op, map_space, flip); \
1984 break; \
1985 } \
1986 } \
1987
1988#define render_scanline_obj_no_partial_alpha(combine_op, alpha_op, map_space) \
1989 render_scanline_obj_main(combine_op, alpha_op, map_space) \
1990
1991#define render_scanline_obj_partial_alpha(combine_op, alpha_op, map_space) \
1992 if((obj_attribute_0 >> 10) & 0x03) \
1993 { \
1994 pixel_combine = 0x00000300; \
1995 render_scanline_obj_main(combine_op, alpha_obj, map_space); \
1996 } \
1997 else \
1998 { \
1999 pixel_combine = base_pixel_combine; \
2000 render_scanline_obj_main(combine_op, color32, map_space); \
2001 } \
2002
2003#define render_scanline_obj_prologue_transparent(alpha_op) \
2004
2005#define render_scanline_obj_prologue_copy_body(type) \
2006 copy_start = obj_x; \
2007 if(obj_attribute_0 & 0x200) \
2008 copy_end = obj_x + (obj_width * 2); \
2009 else \
2010 copy_end = obj_x + obj_width; \
2011 \
2012 if(copy_start < start) \
2013 copy_start = start; \
2014 if(copy_end > end) \
2015 copy_end = end; \
2016 \
2017 if((copy_start < end) && (copy_end > start)) \
2018 { \
2019 render_scanline_conditional_##type(copy_start, copy_end, copy_buffer, \
2020 obj_enable, dispcnt, bldcnt, layer_renderers); \
2021 copy_ptr = copy_buffer + copy_start; \
2022 } \
2023 else \
2024 { \
2025 continue; \
2026 } \
2027
2028#define render_scanline_obj_prologue_copy_tile() \
2029 render_scanline_obj_prologue_copy_body(tile) \
2030
2031#define render_scanline_obj_prologue_copy_bitmap() \
2032 render_scanline_obj_prologue_copy_body(bitmap) \
2033
2034#define render_scanline_obj_prologue_copy(alpha_op) \
2035 render_scanline_obj_prologue_##alpha_op() \
2036
2037
2038#define render_scanline_obj_builder(combine_op, alpha_op, map_space, \
2039 partial_alpha_op) \
2040void render_scanline_obj_##alpha_op##_##map_space(u32 priority, \
2041 u32 start, u32 end, render_scanline_dest_##alpha_op *scanline) \
2042{ \
2043 render_scanline_obj_extra_variables_##alpha_op(map_space); \
2044 s32 obj_num, i; \
2045 s32 obj_x, obj_y; \
2046 s32 obj_size; \
2047 s32 obj_width, obj_height; \
2048 u32 obj_attribute_0, obj_attribute_1, obj_attribute_2; \
2049 s32 vcount = io_registers[REG_VCOUNT]; \
2050 u32 tile_run; \
2051 u32 current_pixels; \
2052 u32 current_pixel; \
2053 u32 current_palette; \
2054 u32 vertical_offset; \
2055 u32 partial_tile_run, partial_tile_offset; \
2056 u32 pixel_run; \
2057 u16 *oam_ptr; \
2058 render_scanline_dest_##alpha_op *dest_ptr; \
2059 u8 *tile_base = vram + 0x10000; \
2060 u8 *tile_ptr; \
2061 u32 obj_count = obj_priority_count[priority][vcount]; \
2062 u8 *obj_list = obj_priority_list[priority][vcount]; \
2063 \
2064 for(obj_num = 0; obj_num < obj_count; obj_num++) \
2065 { \
2066 oam_ptr = oam_ram + (obj_list[obj_num] * 4); \
2067 obj_attribute_0 = oam_ptr[0]; \
2068 obj_attribute_1 = oam_ptr[1]; \
2069 obj_attribute_2 = oam_ptr[2]; \
2070 obj_size = ((obj_attribute_0 >> 12) & 0x0C) | (obj_attribute_1 >> 14); \
2071 \
2072 obj_x = (s32)(obj_attribute_1 << 23) >> 23; \
2073 obj_width = obj_width_table[obj_size]; \
2074 \
2075 render_scanline_obj_prologue_##combine_op(alpha_op); \
2076 \
2077 obj_y = obj_attribute_0 & 0xFF; \
2078 \
2079 if(obj_y > 160) \
2080 obj_y -= 256; \
2081 \
2082 obj_height = obj_height_table[obj_size]; \
2083 render_scanline_obj_##partial_alpha_op(combine_op, alpha_op, map_space); \
2084 } \
2085} \
2086
2087render_scanline_obj_builder(transparent, normal, 1D, no_partial_alpha);
2088render_scanline_obj_builder(transparent, normal, 2D, no_partial_alpha);
2089render_scanline_obj_builder(transparent, color16, 1D, no_partial_alpha);
2090render_scanline_obj_builder(transparent, color16, 2D, no_partial_alpha);
2091render_scanline_obj_builder(transparent, color32, 1D, no_partial_alpha);
2092render_scanline_obj_builder(transparent, color32, 2D, no_partial_alpha);
2093render_scanline_obj_builder(transparent, alpha_obj, 1D, no_partial_alpha);
2094render_scanline_obj_builder(transparent, alpha_obj, 2D, no_partial_alpha);
2095render_scanline_obj_builder(transparent, partial_alpha, 1D, partial_alpha);
2096render_scanline_obj_builder(transparent, partial_alpha, 2D, partial_alpha);
2097render_scanline_obj_builder(copy, copy_tile, 1D, no_partial_alpha);
2098render_scanline_obj_builder(copy, copy_tile, 2D, no_partial_alpha);
2099render_scanline_obj_builder(copy, copy_bitmap, 1D, no_partial_alpha);
2100render_scanline_obj_builder(copy, copy_bitmap, 2D, no_partial_alpha);
2101
2102
2103
2104void order_obj(u32 video_mode)
2105{
2106 s32 obj_num, priority, row;
2107 s32 obj_x, obj_y;
2108 s32 obj_size, obj_mode;
2109 s32 obj_width, obj_height;
2110 u32 obj_priority;
2111 u32 obj_attribute_0, obj_attribute_1, obj_attribute_2;
2112 s32 vcount = io_registers[REG_VCOUNT];
2113 u32 partial_tile_run, partial_tile_offset;
2114 u32 pixel_run;
2115 u32 current_count;
2116 u16 *oam_ptr = oam_ram + 508;
2117 u16 *dest_ptr;
2118 u8 *tile_base = vram + 0x10000;
2119 u8 *tile_ptr;
2120
2121 for(priority = 0; priority < 5; priority++)
2122 {
2123 for(row = 0; row < 160; row++)
2124 {
2125 obj_priority_count[priority][row] = 0;
2126 }
2127 }
2128
2129 for(row = 0; row < 160; row++)
2130 {
2131 obj_alpha_count[row] = 0;
2132 }
2133
2134 for(obj_num = 127; obj_num >= 0; obj_num--, oam_ptr -= 4)
2135 {
2136 obj_attribute_0 = oam_ptr[0];
2137 obj_attribute_2 = oam_ptr[2];
2138 obj_size = obj_attribute_0 & 0xC000;
2139 obj_priority = (obj_attribute_2 >> 10) & 0x03;
2140 obj_mode = (obj_attribute_0 >> 10) & 0x03;
2141
2142 if(((obj_attribute_0 & 0x0300) != 0x0200) && (obj_size != 0xC000) &&
2143 (obj_mode != 3) && ((video_mode < 3) ||
2144 ((obj_attribute_2 & 0x3FF) >= 512)))
2145 {
2146 obj_y = obj_attribute_0 & 0xFF;
2147 if(obj_y > 160)
2148 obj_y -= 256;
2149
2150 obj_attribute_1 = oam_ptr[1];
2151 obj_size = ((obj_size >> 12) & 0x0C) | (obj_attribute_1 >> 14);
2152 obj_height = obj_height_table[obj_size];
2153 obj_width = obj_width_table[obj_size];
2154
2155 if(obj_attribute_0 & 0x200)
2156 {
2157 obj_height *= 2;
2158 obj_width *= 2;
2159 }
2160
2161 if(((obj_y + obj_height) > 0) && (obj_y < 160))
2162 {
2163 obj_x = (s32)(obj_attribute_1 << 23) >> 23;
2164
2165 if(((obj_x + obj_width) > 0) && (obj_x < 240))
2166 {
2167 if(obj_y < 0)
2168 {
2169 obj_height += obj_y;
2170 obj_y = 0;
2171 }
2172
2173 if((obj_y + obj_height) >= 160)
2174 {
2175 obj_height = 160 - obj_y;
2176 }
2177
2178 if(obj_mode == 1)
2179 {
2180 for(row = obj_y; row < obj_y + obj_height; row++)
2181 {
2182 current_count = obj_priority_count[obj_priority][row];
2183 obj_priority_list[obj_priority][row][current_count] = obj_num;
2184 obj_priority_count[obj_priority][row] = current_count + 1;
2185 obj_alpha_count[row]++;
2186 }
2187 }
2188 else
2189 {
2190 if(obj_mode == 2)
2191 {
2192 obj_priority = 4;
2193 }
2194
2195 for(row = obj_y; row < obj_y + obj_height; row++)
2196 {
2197 current_count = obj_priority_count[obj_priority][row];
2198 obj_priority_list[obj_priority][row][current_count] = obj_num;
2199 obj_priority_count[obj_priority][row] = current_count + 1;
2200 }
2201 }
2202 }
2203 }
2204 }
2205 }
2206}
2207
2208u32 layer_order[16];
2209u32 layer_count;
2210
2211u32 order_layers(u32 layer_flags)
2212{
2213 s32 priority, layer_number;
2214 layer_count = 0;
2215
2216 for(priority = 3; priority >= 0; priority--)
2217 {
2218 for(layer_number = 3; layer_number >= 0; layer_number--)
2219 {
2220 if(((layer_flags >> layer_number) & 1) &&
2221 ((io_registers[REG_BG0CNT + layer_number] & 0x03) == priority))
2222 {
2223 layer_order[layer_count] = layer_number;
2224 layer_count++;
2225 }
2226 }
2227
2228 if((obj_priority_count[priority][io_registers[REG_VCOUNT]] > 0)
2229 && (layer_flags & 0x10))
2230 {
2231 layer_order[layer_count] = priority | 0x04;
2232 layer_count++;
2233 }
2234 }
2235}
2236
2237#define fill_line(_start, _end) \
2238 u32 i; \
2239 \
2240 for(i = _start; i < _end; i++) \
2241 { \
2242 dest_ptr[i] = color; \
2243 } \
2244
2245
2246#define fill_line_color_normal() \
2247 color = palette_ram_converted[color] \
2248
2249#define fill_line_color_alpha() \
2250
2251#define fill_line_color_color16() \
2252
2253#define fill_line_color_color32() \
2254
2255#define fill_line_builder(type) \
2256void fill_line_##type(u16 color, render_scanline_dest_##type *dest_ptr, \
2257 u32 start, u32 end) \
2258{ \
2259 fill_line_color_##type(); \
2260 fill_line(start, end); \
2261} \
2262
2263fill_line_builder(normal);
2264fill_line_builder(alpha);
2265fill_line_builder(color16);
2266fill_line_builder(color32);
2267
2268
2269// Alpha blend two pixels (pixel_top and pixel_bottom).
2270
2271#define blend_pixel() \
2272 pixel_bottom = palette_ram_converted[(pixel_pair >> 16) & 0x1FF]; \
2273 pixel_bottom = (pixel_bottom | (pixel_bottom << 16)) & 0x07E0F81F; \
2274 pixel_top = ((pixel_top * blend_a) + (pixel_bottom * blend_b)) >> 4 \
2275
2276
2277// Alpha blend two pixels, allowing for saturation (individual channels > 31).
2278// The operation is optimized towards saturation not occuring.
2279
2280#define blend_saturate_pixel() \
2281 pixel_bottom = palette_ram_converted[(pixel_pair >> 16) & 0x1FF]; \
2282 pixel_bottom = (pixel_bottom | (pixel_bottom << 16)) & 0x07E0F81F; \
2283 pixel_top = ((pixel_top * blend_a) + (pixel_bottom * blend_b)) >> 4; \
2284 if(pixel_top & 0x08010020) \
2285 { \
2286 if(pixel_top & 0x08000000) \
2287 pixel_top |= 0x07E00000; \
2288 \
2289 if(pixel_top & 0x00010000) \
2290 pixel_top |= 0x0000F800; \
2291 \
2292 if(pixel_top & 0x00000020) \
2293 pixel_top |= 0x0000001F; \
2294 } \
2295
2296#define brighten_pixel() \
2297 pixel_top = upper + ((pixel_top * blend) >> 4); \
2298
2299#define darken_pixel() \
2300 pixel_top = (pixel_top * blend) >> 4; \
2301
2302#define effect_condition_alpha \
2303 ((pixel_pair & 0x04000200) == 0x04000200) \
2304
2305#define effect_condition_fade(pixel_source) \
2306 ((pixel_source & 0x00000200) == 0x00000200) \
2307
2308#define expand_pixel_no_dest(expand_type, pixel_source) \
2309 pixel_top = (pixel_top | (pixel_top << 16)) & 0x07E0F81F; \
2310 expand_type##_pixel(); \
2311 pixel_top &= 0x07E0F81F; \
2312 pixel_top = (pixel_top >> 16) | pixel_top \
2313
2314#define expand_pixel(expand_type, pixel_source) \
2315 pixel_top = palette_ram_converted[pixel_source & 0x1FF]; \
2316 expand_pixel_no_dest(expand_type, pixel_source); \
2317 *screen_dest_ptr = pixel_top \
2318
2319#define expand_loop(expand_type, effect_condition, pixel_source) \
2320 screen_src_ptr += start; \
2321 screen_dest_ptr += start; \
2322 \
2323 end -= start; \
2324 \
2325 for(i = 0; i < end; i++) \
2326 { \
2327 pixel_source = *screen_src_ptr; \
2328 if(effect_condition) \
2329 { \
2330 expand_pixel(expand_type, pixel_source); \
2331 } \
2332 else \
2333 { \
2334 *screen_dest_ptr = \
2335 palette_ram_converted[pixel_source & 0x1FF]; \
2336 } \
2337 \
2338 screen_src_ptr++; \
2339 screen_dest_ptr++; \
2340 } \
2341
2342
2343#define expand_loop_partial_alpha(alpha_expand, expand_type) \
2344 screen_src_ptr += start; \
2345 screen_dest_ptr += start; \
2346 \
2347 end -= start; \
2348 \
2349 for(i = 0; i < end; i++) \
2350 { \
2351 pixel_pair = *screen_src_ptr; \
2352 if(effect_condition_fade(pixel_pair)) \
2353 { \
2354 if(effect_condition_alpha) \
2355 { \
2356 expand_pixel(alpha_expand, pixel_pair); \
2357 } \
2358 else \
2359 { \
2360 expand_pixel(expand_type, pixel_pair); \
2361 } \
2362 } \
2363 else \
2364 { \
2365 *screen_dest_ptr = \
2366 palette_ram_converted[pixel_pair & 0x1FF]; \
2367 } \
2368 \
2369 screen_src_ptr++; \
2370 screen_dest_ptr++; \
2371 } \
2372
2373
2374#define expand_partial_alpha(expand_type) \
2375 if((blend_a + blend_b) > 16) \
2376 { \
2377 expand_loop_partial_alpha(blend_saturate, expand_type); \
2378 } \
2379 else \
2380 { \
2381 expand_loop_partial_alpha(blend, expand_type); \
2382 } \
2383
2384
2385
2386// Blend top two pixels of scanline with each other.
2387
2388#ifdef RENDER_COLOR16_NORMAL
2389
2390#ifndef GP2X_BUILD
2391
2392void expand_normal(u16 *screen_ptr, u32 start, u32 end)
2393{
2394 u32 i, pixel_source;
2395 screen_ptr += start;
2396
2397 return;
2398
2399 end -= start;
2400
2401 for(i = 0; i < end; i++)
2402 {
2403 pixel_source = *screen_ptr;
2404 *screen_ptr = palette_ram_converted[pixel_source];
2405
2406 screen_ptr++;
2407 }
2408}
2409
2410#endif
2411
2412#else
2413
2414#define expand_normal(screen_ptr, start, end)
2415
2416#endif
2417
2418
2419#ifndef GP2X_BUILD
2420
2421void expand_blend(u32 *screen_src_ptr, u16 *screen_dest_ptr,
2422 u32 start, u32 end)
2423{
2424 u32 pixel_pair;
2425 u32 pixel_top, pixel_bottom;
2426 u32 bldalpha = io_registers[REG_BLDALPHA];
2427 u32 blend_a = bldalpha & 0x1F;
2428 u32 blend_b = (bldalpha >> 8) & 0x1F;
2429 u32 i;
2430
2431 if(blend_a > 16)
2432 blend_a = 16;
2433
2434 if(blend_b > 16)
2435 blend_b = 16;
2436
2437 // The individual colors can saturate over 31, this should be taken
2438 // care of in an alternate pass as it incurs a huge additional speedhit.
2439 if((blend_a + blend_b) > 16)
2440 {
2441 expand_loop(blend_saturate, effect_condition_alpha, pixel_pair);
2442 }
2443 else
2444 {
2445 expand_loop(blend, effect_condition_alpha, pixel_pair);
2446 }
2447}
2448
2449#endif
2450
2451// Blend scanline with white.
2452
2453void expand_darken(u16 *screen_src_ptr, u16 *screen_dest_ptr,
2454 u32 start, u32 end)
2455{
2456 u32 pixel_top;
2457 s32 blend = 16 - (io_registers[REG_BLDY] & 0x1F);
2458 u32 i;
2459
2460 if(blend < 0)
2461 blend = 0;
2462
2463 expand_loop(darken, effect_condition_fade(pixel_top), pixel_top);
2464}
2465
2466
2467// Blend scanline with black.
2468
2469void expand_brighten(u16 *screen_src_ptr, u16 *screen_dest_ptr,
2470 u32 start, u32 end)
2471{
2472 u32 pixel_top;
2473 u32 blend = io_registers[REG_BLDY] & 0x1F;
2474 u32 upper;
2475 u32 i;
2476
2477 if(blend > 16)
2478 blend = 16;
2479
2480 upper = ((0x07E0F81F * blend) >> 4) & 0x07E0F81F;
2481 blend = 16 - blend;
2482
2483 expand_loop(brighten, effect_condition_fade(pixel_top), pixel_top);
2484
2485}
2486
2487
2488// Expand scanline such that if both top and bottom pass it's alpha,
2489// if only top passes it's as specified, and if neither pass it's normal.
2490
2491void expand_darken_partial_alpha(u32 *screen_src_ptr, u16 *screen_dest_ptr,
2492 u32 start, u32 end)
2493{
2494 s32 blend = 16 - (io_registers[REG_BLDY] & 0x1F);
2495 u32 pixel_pair;
2496 u32 pixel_top, pixel_bottom;
2497 u32 bldalpha = io_registers[REG_BLDALPHA];
2498 u32 blend_a = bldalpha & 0x1F;
2499 u32 blend_b = (bldalpha >> 8) & 0x1F;
2500 u32 i;
2501
2502 if(blend < 0)
2503 blend = 0;
2504
2505 if(blend_a > 16)
2506 blend_a = 16;
2507
2508 if(blend_b > 16)
2509 blend_b = 16;
2510
2511 expand_partial_alpha(darken);
2512}
2513
2514
2515void expand_brighten_partial_alpha(u32 *screen_src_ptr, u16 *screen_dest_ptr,
2516 u32 start, u32 end)
2517{
2518 s32 blend = io_registers[REG_BLDY] & 0x1F;
2519 u32 pixel_pair;
2520 u32 pixel_top, pixel_bottom;
2521 u32 bldalpha = io_registers[REG_BLDALPHA];
2522 u32 blend_a = bldalpha & 0x1F;
2523 u32 blend_b = (bldalpha >> 8) & 0x1F;
2524 u32 upper;
2525 u32 i;
2526
2527 if(blend > 16)
2528 blend = 16;
2529
2530 upper = ((0x07E0F81F * blend) >> 4) & 0x07E0F81F;
2531 blend = 16 - blend;
2532
2533 if(blend_a > 16)
2534 blend_a = 16;
2535
2536 if(blend_b > 16)
2537 blend_b = 16;
2538
2539 expand_partial_alpha(brighten);
2540}
2541
2542
2543// Render an OBJ layer from start to end, depending on the type (1D or 2D)
2544// stored in dispcnt.
2545
2546#define render_obj_layer(type, dest, _start, _end) \
2547 current_layer &= ~0x04; \
2548 if(dispcnt & 0x40) \
2549 render_scanline_obj_##type##_1D(current_layer, _start, _end, dest); \
2550 else \
2551 render_scanline_obj_##type##_2D(current_layer, _start, _end, dest) \
2552
2553
2554// Render a target all the way with the background color as taken from the
2555// palette.
2556
2557#define fill_line_bg(type, dest, _start, _end) \
2558 fill_line_##type(0, dest, _start, _end) \
2559
2560
2561// Render all layers as they appear in the layer order.
2562
2563#define render_layers(tile_alpha, obj_alpha, dest) \
2564{ \
2565 current_layer = layer_order[0]; \
2566 if(current_layer & 0x04) \
2567 { \
2568 /* If the first one is OBJ render the background then render it. */ \
2569 fill_line_bg(tile_alpha, dest, 0, 240); \
2570 render_obj_layer(obj_alpha, dest, 0, 240); \
2571 } \
2572 else \
2573 { \
2574 /* Otherwise render a base layer. */ \
2575 layer_renderers[current_layer].tile_alpha##_render_base(current_layer, \
2576 0, 240, dest); \
2577 } \
2578 \
2579 /* Render the rest of the layers. */ \
2580 for(layer_order_pos = 1; layer_order_pos < layer_count; layer_order_pos++) \
2581 { \
2582 current_layer = layer_order[layer_order_pos]; \
2583 if(current_layer & 0x04) \
2584 { \
2585 render_obj_layer(obj_alpha, dest, 0, 240); \
2586 } \
2587 else \
2588 { \
2589 layer_renderers[current_layer]. \
2590 tile_alpha##_render_transparent(current_layer, 0, 240, dest); \
2591 } \
2592 } \
2593} \
2594
2595#define render_condition_alpha \
2596 (((io_registers[REG_BLDALPHA] & 0x1F1F) != 0x001F) && \
2597 ((io_registers[REG_BLDCNT] & 0x3F) != 0) && \
2598 ((io_registers[REG_BLDCNT] & 0x3F00) != 0)) \
2599
2600#define render_condition_fade \
2601 (((io_registers[REG_BLDY] & 0x1F) != 0) && \
2602 ((io_registers[REG_BLDCNT] & 0x3F) != 0)) \
2603
2604#define render_layers_color_effect(renderer, layer_condition, \
2605 alpha_condition, fade_condition, _start, _end) \
2606{ \
2607 if(layer_condition) \
2608 { \
2609 if(obj_alpha_count[io_registers[REG_VCOUNT]] > 0) \
2610 { \
2611 /* Render based on special effects mode. */ \
2612 u32 screen_buffer[240]; \
2613 switch((bldcnt >> 6) & 0x03) \
2614 { \
2615 /* Alpha blend */ \
2616 case 0x01: \
2617 { \
2618 if(alpha_condition) \
2619 { \
2620 renderer(alpha, alpha_obj, screen_buffer); \
2621 expand_blend(screen_buffer, scanline, _start, _end); \
2622 return; \
2623 } \
2624 break; \
2625 } \
2626 \
2627 /* Fade to white */ \
2628 case 0x02: \
2629 { \
2630 if(fade_condition) \
2631 { \
2632 renderer(color32, partial_alpha, screen_buffer); \
2633 expand_brighten_partial_alpha(screen_buffer, scanline, \
2634 _start, _end); \
2635 return; \
2636 } \
2637 break; \
2638 } \
2639 \
2640 /* Fade to black */ \
2641 case 0x03: \
2642 { \
2643 if(fade_condition) \
2644 { \
2645 renderer(color32, partial_alpha, screen_buffer); \
2646 expand_darken_partial_alpha(screen_buffer, scanline, \
2647 _start, _end); \
2648 return; \
2649 } \
2650 break; \
2651 } \
2652 } \
2653 \
2654 renderer(color32, partial_alpha, screen_buffer); \
2655 expand_blend(screen_buffer, scanline, _start, _end); \
2656 } \
2657 else \
2658 { \
2659 /* Render based on special effects mode. */ \
2660 switch((bldcnt >> 6) & 0x03) \
2661 { \
2662 /* Alpha blend */ \
2663 case 0x01: \
2664 { \
2665 if(alpha_condition) \
2666 { \
2667 u32 screen_buffer[240]; \
2668 renderer(alpha, alpha_obj, screen_buffer); \
2669 expand_blend(screen_buffer, scanline, _start, _end); \
2670 return; \
2671 } \
2672 break; \
2673 } \
2674 \
2675 /* Fade to white */ \
2676 case 0x02: \
2677 { \
2678 if(fade_condition) \
2679 { \
2680 renderer(color16, color16, scanline); \
2681 expand_brighten(scanline, scanline, _start, _end); \
2682 return; \
2683 } \
2684 break; \
2685 } \
2686 \
2687 /* Fade to black */ \
2688 case 0x03: \
2689 { \
2690 if(fade_condition) \
2691 { \
2692 renderer(color16, color16, scanline); \
2693 expand_darken(scanline, scanline, _start, _end); \
2694 return; \
2695 } \
2696 break; \
2697 } \
2698 } \
2699 \
2700 renderer(normal, normal, scanline); \
2701 expand_normal(scanline, _start, _end); \
2702 } \
2703 } \
2704 else \
2705 { \
2706 u32 pixel_top = palette_ram_converted[0]; \
2707 switch((bldcnt >> 6) & 0x03) \
2708 { \
2709 /* Fade to white */ \
2710 case 0x02: \
2711 { \
2712 if(color_combine_mask_a(5)) \
2713 { \
2714 u32 blend = io_registers[REG_BLDY] & 0x1F; \
2715 u32 upper; \
2716 \
2717 if(blend > 16) \
2718 blend = 16; \
2719 \
2720 upper = ((0x07E0F81F * blend) >> 4) & 0x07E0F81F; \
2721 blend = 16 - blend; \
2722 \
2723 expand_pixel_no_dest(brighten, pixel_top); \
2724 } \
2725 break; \
2726 } \
2727 \
2728 /* Fade to black */ \
2729 case 0x03: \
2730 { \
2731 if(color_combine_mask_a(5)) \
2732 { \
2733 s32 blend = 16 - (io_registers[REG_BLDY] & 0x1F); \
2734 \
2735 if(blend < 0) \
2736 blend = 0; \
2737 \
2738 expand_pixel_no_dest(darken, pixel_top); \
2739 } \
2740 break; \
2741 } \
2742 } \
2743 fill_line_color16(pixel_top, scanline, _start, _end); \
2744 } \
2745} \
2746
2747
2748// Renders an entire scanline from 0 to 240, based on current color mode.
2749
2750void render_scanline_tile(u16 *scanline, u32 dispcnt)
2751{
2752 u32 current_layer;
2753 u32 layer_order_pos;
2754 u32 bldcnt = io_registers[REG_BLDCNT];
2755 render_scanline_layer_functions_tile();
2756
2757 render_layers_color_effect(render_layers, layer_count,
2758 render_condition_alpha, render_condition_fade, 0, 240);
2759}
2760
2761void render_scanline_bitmap(u16 *scanline, u32 dispcnt)
2762{
2763 u32 bldcnt = io_registers[REG_BLDCNT];
2764 render_scanline_layer_functions_bitmap();
2765 u32 current_layer;
2766 u32 layer_order_pos;
2767
2768 fill_line_bg(normal, scanline, 0, 240);
2769
2770 for(layer_order_pos = 0; layer_order_pos < layer_count; layer_order_pos++)
2771 {
2772 current_layer = layer_order[layer_order_pos];
2773 if(current_layer & 0x04)
2774 {
2775 render_obj_layer(normal, scanline, 0, 240);
2776 }
2777 else
2778 {
2779 layer_renderers->normal_render(0, 240, scanline);
2780 }
2781 }
2782}
2783
2784// Render layers from start to end based on if they're allowed in the
2785// enable flags.
2786
2787#define render_layers_conditional(tile_alpha, obj_alpha, dest) \
2788{ \
2789 __label__ skip; \
2790 current_layer = layer_order[layer_order_pos]; \
2791 /* If OBJ aren't enabled skip to the first non-OBJ layer */ \
2792 if(!(enable_flags & 0x10)) \
2793 { \
2794 while((current_layer & 0x04) || !((1 << current_layer) & enable_flags)) \
2795 { \
2796 layer_order_pos++; \
2797 current_layer = layer_order[layer_order_pos]; \
2798 \
2799 /* Oops, ran out of layers, render the background. */ \
2800 if(layer_order_pos == layer_count) \
2801 { \
2802 fill_line_bg(tile_alpha, dest, start, end); \
2803 goto skip; \
2804 } \
2805 } \
2806 \
2807 /* Render the first valid layer */ \
2808 layer_renderers[current_layer].tile_alpha##_render_base(current_layer, \
2809 start, end, dest); \
2810 \
2811 layer_order_pos++; \
2812 \
2813 /* Render the rest of the layers if active, skipping OBJ ones. */ \
2814 for(; layer_order_pos < layer_count; layer_order_pos++) \
2815 { \
2816 current_layer = layer_order[layer_order_pos]; \
2817 if(!(current_layer & 0x04) && ((1 << current_layer) & enable_flags)) \
2818 { \
2819 layer_renderers[current_layer]. \
2820 tile_alpha##_render_transparent(current_layer, start, end, dest); \
2821 } \
2822 } \
2823 } \
2824 else \
2825 { \
2826 /* Find the first active layer, skip all of the inactive ones */ \
2827 while(!((current_layer & 0x04) || ((1 << current_layer) & enable_flags))) \
2828 { \
2829 layer_order_pos++; \
2830 current_layer = layer_order[layer_order_pos]; \
2831 \
2832 /* Oops, ran out of layers, render the background. */ \
2833 if(layer_order_pos == layer_count) \
2834 { \
2835 fill_line_bg(tile_alpha, dest, start, end); \
2836 goto skip; \
2837 } \
2838 } \
2839 \
2840 if(current_layer & 0x04) \
2841 { \
2842 /* If the first one is OBJ render the background then render it. */ \
2843 fill_line_bg(tile_alpha, dest, start, end); \
2844 render_obj_layer(obj_alpha, dest, start, end); \
2845 } \
2846 else \
2847 { \
2848 /* Otherwise render a base layer. */ \
2849 layer_renderers[current_layer]. \
2850 tile_alpha##_render_base(current_layer, start, end, dest); \
2851 } \
2852 \
2853 layer_order_pos++; \
2854 \
2855 /* Render the rest of the layers. */ \
2856 for(; layer_order_pos < layer_count; layer_order_pos++) \
2857 { \
2858 current_layer = layer_order[layer_order_pos]; \
2859 if(current_layer & 0x04) \
2860 { \
2861 render_obj_layer(obj_alpha, dest, start, end); \
2862 } \
2863 else \
2864 { \
2865 if(enable_flags & (1 << current_layer)) \
2866 { \
2867 layer_renderers[current_layer]. \
2868 tile_alpha##_render_transparent(current_layer, start, end, dest); \
2869 } \
2870 } \
2871 } \
2872 } \
2873 \
2874 skip: \
2875 ; \
2876} \
2877
2878
2879// Render all of the BG and OBJ in a tiled scanline from start to end ONLY if
2880// enable_flag allows that layer/OBJ. Also conditionally render color effects.
2881
2882void render_scanline_conditional_tile(u32 start, u32 end, u16 *scanline,
2883 u32 enable_flags, u32 dispcnt, u32 bldcnt, tile_layer_render_struct
2884 *layer_renderers)
2885{
2886 u32 current_layer;
2887 u32 layer_order_pos = 0;
2888
2889 render_layers_color_effect(render_layers_conditional,
2890 (layer_count && (enable_flags & 0x1F)),
2891 ((enable_flags & 0x20) && render_condition_alpha),
2892 ((enable_flags & 0x20) && render_condition_fade), start, end);
2893}
2894
2895
2896// Render the BG and OBJ in a bitmap scanline from start to end ONLY if
2897// enable_flag allows that layer/OBJ. Also conditionally render color effects.
2898
2899void render_scanline_conditional_bitmap(u32 start, u32 end, u16 *scanline,
2900 u32 enable_flags, u32 dispcnt, u32 bldcnt, bitmap_layer_render_struct
2901 *layer_renderers)
2902{
2903 u32 current_layer;
2904 u32 layer_order_pos;
2905
2906 fill_line_bg(normal, scanline, start, end);
2907
2908 for(layer_order_pos = 0; layer_order_pos < layer_count; layer_order_pos++)
2909 {
2910 current_layer = layer_order[layer_order_pos];
2911 if(current_layer & 0x04)
2912 {
2913 if(enable_flags & 0x10)
2914 {
2915 render_obj_layer(normal, scanline, start, end);
2916 }
2917 }
2918 else
2919 {
2920 if(enable_flags & 0x04)
2921 layer_renderers->normal_render(start, end, scanline);
2922 }
2923 }
2924}
2925
2926
2927#define window_x_coords(window_number) \
2928 window_##window_number##_x1 = \
2929 io_registers[REG_WIN##window_number##H] >> 8; \
2930 window_##window_number##_x2 = \
2931 io_registers[REG_WIN##window_number##H] & 0xFF; \
2932 window_##window_number##_enable = \
2933 (winin >> (window_number * 8)) & 0x3F; \
2934 \
2935 if(window_##window_number##_x1 > 240) \
2936 window_##window_number##_x1 = 240; \
2937 \
2938 if(window_##window_number##_x2 > 240) \
2939 window_##window_number##_x2 = 240 \
2940
2941#define window_coords(window_number) \
2942 u32 window_##window_number##_x1, window_##window_number##_x2; \
2943 u32 window_##window_number##_y1, window_##window_number##_y2; \
2944 u32 window_##window_number##_enable; \
2945 window_##window_number##_y1 = \
2946 io_registers[REG_WIN##window_number##V] >> 8; \
2947 window_##window_number##_y2 = \
2948 io_registers[REG_WIN##window_number##V] & 0xFF; \
2949 \
2950 if(window_##window_number##_y1 > window_##window_number##_y2) \
2951 { \
2952 if((((vcount <= window_##window_number##_y2) || \
2953 (vcount > window_##window_number##_y1)) || \
2954 (window_##window_number##_y2 > 227)) && \
2955 (window_##window_number##_y1 <= 227)) \
2956 { \
2957 window_x_coords(window_number); \
2958 } \
2959 else \
2960 { \
2961 window_##window_number##_x1 = 240; \
2962 window_##window_number##_x2 = 240; \
2963 } \
2964 } \
2965 else \
2966 { \
2967 if((((vcount >= window_##window_number##_y1) && \
2968 (vcount < window_##window_number##_y2)) || \
2969 (window_##window_number##_y2 > 227)) && \
2970 (window_##window_number##_y1 <= 227)) \
2971 { \
2972 window_x_coords(window_number); \
2973 } \
2974 else \
2975 { \
2976 window_##window_number##_x1 = 240; \
2977 window_##window_number##_x2 = 240; \
2978 } \
2979 } \
2980
2981#define render_window_segment(type, start, end, window_type) \
2982 if(start != end) \
2983 { \
2984 render_scanline_conditional_##type(start, end, scanline, \
2985 window_##window_type##_enable, dispcnt, bldcnt, layer_renderers); \
2986 } \
2987
2988#define render_window_segment_unequal(type, start, end, window_type) \
2989 render_scanline_conditional_##type(start, end, scanline, \
2990 window_##window_type##_enable, dispcnt, bldcnt, layer_renderers) \
2991
2992#define render_window_segment_clip(type, clip_start, clip_end, start, end, \
2993 window_type) \
2994{ \
2995 if(start != end) \
2996 { \
2997 if(start < clip_start) \
2998 { \
2999 if(end > clip_start) \
3000 { \
3001 if(end > clip_end) \
3002 { \
3003 render_window_segment_unequal(type, clip_start, clip_end, \
3004 window_type); \
3005 } \
3006 else \
3007 { \
3008 render_window_segment_unequal(type, clip_start, end, window_type); \
3009 } \
3010 } \
3011 } \
3012 else \
3013 \
3014 if(end > clip_end) \
3015 { \
3016 if(start < clip_end) \
3017 render_window_segment_unequal(type, start, clip_end, window_type); \
3018 } \
3019 else \
3020 { \
3021 render_window_segment_unequal(type, start, end, window_type); \
3022 } \
3023 } \
3024} \
3025
3026#define render_window_clip_1(type, start, end) \
3027 if(window_1_x1 != 240) \
3028 { \
3029 if(window_1_x1 > window_1_x2) \
3030 { \
3031 render_window_segment_clip(type, start, end, 0, window_1_x2, 1); \
3032 render_window_segment_clip(type, start, end, window_1_x2, window_1_x1, \
3033 out); \
3034 render_window_segment_clip(type, start, end, window_1_x1, 240, 1); \
3035 } \
3036 else \
3037 { \
3038 render_window_segment_clip(type, start, end, 0, window_1_x1, out); \
3039 render_window_segment_clip(type, start, end, window_1_x1, window_1_x2, \
3040 1); \
3041 render_window_segment_clip(type, start, end, window_1_x2, 240, out); \
3042 } \
3043 } \
3044 else \
3045 { \
3046 render_window_segment(type, start, end, out); \
3047 } \
3048
3049#define render_window_clip_obj(type, start, end); \
3050 render_window_segment(type, start, end, out); \
3051 if(dispcnt & 0x40) \
3052 render_scanline_obj_copy_##type##_1D(4, start, end, scanline); \
3053 else \
3054 render_scanline_obj_copy_##type##_2D(4, start, end, scanline) \
3055
3056
3057#define render_window_segment_clip_obj(type, clip_start, clip_end, start, \
3058 end) \
3059{ \
3060 if(start != end) \
3061 { \
3062 if(start < clip_start) \
3063 { \
3064 if(end > clip_start) \
3065 { \
3066 if(end > clip_end) \
3067 { \
3068 render_window_clip_obj(type, clip_start, clip_end); \
3069 } \
3070 else \
3071 { \
3072 render_window_clip_obj(type, clip_start, end); \
3073 } \
3074 } \
3075 } \
3076 else \
3077 \
3078 if(end > clip_end) \
3079 { \
3080 if(start < clip_end) \
3081 { \
3082 render_window_clip_obj(type, start, clip_end); \
3083 } \
3084 } \
3085 else \
3086 { \
3087 render_window_clip_obj(type, start, end); \
3088 } \
3089 } \
3090} \
3091
3092
3093#define render_window_clip_1_obj(type, start, end) \
3094 if(window_1_x1 != 240) \
3095 { \
3096 if(window_1_x1 > window_1_x2) \
3097 { \
3098 render_window_segment_clip(type, start, end, 0, window_1_x2, 1); \
3099 render_window_segment_clip_obj(type, start, end, window_1_x2, \
3100 window_1_x1); \
3101 render_window_segment_clip(type, start, end, window_1_x1, 240, 1); \
3102 } \
3103 else \
3104 { \
3105 render_window_segment_clip_obj(type, start, end, 0, window_1_x1); \
3106 render_window_segment_clip(type, start, end, window_1_x1, window_1_x2, \
3107 1); \
3108 render_window_segment_clip_obj(type, start, end, window_1_x2, 240); \
3109 } \
3110 } \
3111 else \
3112 { \
3113 render_window_clip_obj(type, start, end); \
3114 } \
3115
3116
3117
3118#define render_window_single(type, window_number) \
3119 u32 winin = io_registers[REG_WININ]; \
3120 window_coords(window_number); \
3121 if(window_##window_number##_x1 > window_##window_number##_x2) \
3122 { \
3123 render_window_segment(type, 0, window_##window_number##_x2, \
3124 window_number); \
3125 render_window_segment(type, window_##window_number##_x2, \
3126 window_##window_number##_x1, out); \
3127 render_window_segment(type, window_##window_number##_x1, 240, \
3128 window_number); \
3129 } \
3130 else \
3131 { \
3132 render_window_segment(type, 0, window_##window_number##_x1, out); \
3133 render_window_segment(type, window_##window_number##_x1, \
3134 window_##window_number##_x2, window_number); \
3135 render_window_segment(type, window_##window_number##_x2, 240, out); \
3136 } \
3137
3138#define render_window_multi(type, front, back) \
3139 if(window_##front##_x1 > window_##front##_x2) \
3140 { \
3141 render_window_segment(type, 0, window_##front##_x2, front); \
3142 render_window_clip_##back(type, window_##front##_x2, \
3143 window_##front##_x1); \
3144 render_window_segment(type, window_##front##_x1, 240, front); \
3145 } \
3146 else \
3147 { \
3148 render_window_clip_##back(type, 0, window_##front##_x1); \
3149 render_window_segment(type, window_##front##_x1, window_##front##_x2, \
3150 front); \
3151 render_window_clip_##back(type, window_##front##_x2, 240); \
3152 } \
3153
3154#define render_scanline_window_builder(type) \
3155void render_scanline_window_##type(u16 *scanline, u32 dispcnt) \
3156{ \
3157 u32 vcount = io_registers[REG_VCOUNT]; \
3158 u32 winout = io_registers[REG_WINOUT]; \
3159 u32 bldcnt = io_registers[REG_BLDCNT]; \
3160 u32 window_out_enable = winout & 0x3F; \
3161 \
3162 render_scanline_layer_functions_##type(); \
3163 \
3164 switch(dispcnt >> 13) \
3165 { \
3166 /* Just window 0 */ \
3167 case 0x01: \
3168 { \
3169 render_window_single(type, 0); \
3170 break; \
3171 } \
3172 \
3173 /* Just window 1 */ \
3174 case 0x02: \
3175 { \
3176 render_window_single(type, 1); \
3177 break; \
3178 } \
3179 \
3180 /* Windows 1 and 2 */ \
3181 case 0x03: \
3182 { \
3183 u32 winin = io_registers[REG_WININ]; \
3184 window_coords(0); \
3185 window_coords(1); \
3186 render_window_multi(type, 0, 1); \
3187 break; \
3188 } \
3189 \
3190 /* Just OBJ windows */ \
3191 case 0x04: \
3192 { \
3193 u32 window_obj_enable = winout >> 8; \
3194 render_window_clip_obj(type, 0, 240); \
3195 break; \
3196 } \
3197 \
3198 /* Window 0 and OBJ window */ \
3199 case 0x05: \
3200 { \
3201 u32 window_obj_enable = winout >> 8; \
3202 u32 winin = io_registers[REG_WININ]; \
3203 window_coords(0); \
3204 render_window_multi(type, 0, obj); \
3205 break; \
3206 } \
3207 \
3208 /* Window 1 and OBJ window */ \
3209 case 0x06: \
3210 { \
3211 u32 window_obj_enable = winout >> 8; \
3212 u32 winin = io_registers[REG_WININ]; \
3213 window_coords(1); \
3214 render_window_multi(type, 1, obj); \
3215 break; \
3216 } \
3217 \
3218 /* Window 0, 1, and OBJ window */ \
3219 case 0x07: \
3220 { \
3221 u32 window_obj_enable = winout >> 8; \
3222 u32 winin = io_registers[REG_WININ]; \
3223 window_coords(0); \
3224 window_coords(1); \
3225 render_window_multi(type, 0, 1_obj); \
3226 break; \
3227 } \
3228 } \
3229} \
3230
3231render_scanline_window_builder(tile);
3232render_scanline_window_builder(bitmap);
3233
3234u32 active_layers[6] = { 0x1F, 0x17, 0x1C, 0x14, 0x14, 0x14 };
3235
3236u32 small_resolution_width = 240;
3237u32 small_resolution_height = 160;
3238u32 resolution_width, resolution_height;
3239
3240void update_scanline()
3241{
3242 u32 pitch = get_screen_pitch();
3243 u32 dispcnt = io_registers[REG_DISPCNT];
3244 u32 display_flags = (dispcnt >> 8) & 0x1F;
3245 u32 vcount = io_registers[REG_VCOUNT];
3246 u16 *screen_offset = get_screen_pixels() + (vcount * pitch);
3247 u32 video_mode = dispcnt & 0x07;
3248 u32 current_layer;
3249
3250 // If OAM has been modified since the last scanline has been updated then
3251 // reorder and reprofile the OBJ lists.
3252 if(oam_update)
3253 {
3254 order_obj(video_mode);
3255 oam_update = 0;
3256 }
3257
3258 order_layers((dispcnt >> 8) & active_layers[video_mode]);
3259
3260 if(skip_next_frame)
3261 return;
3262
3263 // If the screen is in in forced blank draw pure white.
3264 if(dispcnt & 0x80)
3265 {
3266 fill_line_color16(0xFFFF, screen_offset, 0, 240);
3267 }
3268 else
3269 {
3270 if(video_mode < 3)
3271 {
3272 if(dispcnt >> 13)
3273 {
3274 render_scanline_window_tile(screen_offset, dispcnt);
3275 }
3276 else
3277 {
3278 render_scanline_tile(screen_offset, dispcnt);
3279 }
3280 }
3281 else
3282 {
3283 if(dispcnt >> 13)
3284 render_scanline_window_bitmap(screen_offset, dispcnt);
3285 else
3286 render_scanline_bitmap(screen_offset, dispcnt);
3287 }
3288 }
3289
3290 affine_reference_x[0] += (s16)io_registers[REG_BG2PB];
3291 affine_reference_y[0] += (s16)io_registers[REG_BG2PD];
3292 affine_reference_x[1] += (s16)io_registers[REG_BG3PB];
3293 affine_reference_y[1] += (s16)io_registers[REG_BG3PD];
3294}
3295
3296#ifdef PSP_BUILD
3297
3298u32 screen_flip = 0;
3299
3300void flip_screen()
3301{
3302 if(video_direct == 0)
3303 {
3304 u32 *old_ge_cmd_ptr = ge_cmd_ptr;
3305 sceKernelDcacheWritebackAll();
3306
3307 // Render the current screen
3308 ge_cmd_ptr = ge_cmd + 2;
3309 GE_CMD(TBP0, ((u32)screen_pixels & 0x00FFFFFF));
3310 GE_CMD(TBW0, (((u32)screen_pixels & 0xFF000000) >> 8) |
3311 GBA_SCREEN_WIDTH);
3312 ge_cmd_ptr = old_ge_cmd_ptr;
3313
3314 sceGeListEnQueue(ge_cmd, ge_cmd_ptr, gecbid, NULL);
3315
3316 // Flip to the next screen
3317 screen_flip ^= 1;
3318
3319 if(screen_flip)
3320 screen_pixels = screen_texture + (240 * 160 * 2);
3321 else
3322 screen_pixels = screen_texture;
3323 }
3324}
3325
3326#else
3327
3328#define integer_scale_copy_2() \
3329 current_scanline_ptr[x2] = current_pixel; \
3330 current_scanline_ptr[x2 - 1] = current_pixel; \
3331 x2 -= 2 \
3332
3333#define integer_scale_copy_3() \
3334 current_scanline_ptr[x2] = current_pixel; \
3335 current_scanline_ptr[x2 - 1] = current_pixel; \
3336 current_scanline_ptr[x2 - 2] = current_pixel; \
3337 x2 -= 3 \
3338
3339#define integer_scale_copy_4() \
3340 current_scanline_ptr[x2] = current_pixel; \
3341 current_scanline_ptr[x2 - 1] = current_pixel; \
3342 current_scanline_ptr[x2 - 2] = current_pixel; \
3343 current_scanline_ptr[x2 - 3] = current_pixel; \
3344 x2 -= 4 \
3345
3346#define integer_scale_horizontal(scale_factor) \
3347 for(y = 0; y < 160; y++) \
3348 { \
3349 for(x = 239, x2 = (240 * video_scale) - 1; x >= 0; x--) \
3350 { \
3351 current_pixel = current_scanline_ptr[x]; \
3352 integer_scale_copy_##scale_factor(); \
3353 current_scanline_ptr[x2] = current_scanline_ptr[x]; \
3354 current_scanline_ptr[x2 - 1] = current_scanline_ptr[x]; \
3355 current_scanline_ptr[x2 - 2] = current_scanline_ptr[x]; \
3356 } \
3357 current_scanline_ptr += pitch; \
3358 } \
3359
3360void flip_screen()
3361{
3362 if((video_scale != 1) && (current_scale != unscaled))
3363 {
3364 s32 x, y;
3365 s32 x2, y2;
3366 u16 *screen_ptr = get_screen_pixels();
3367 u16 *current_scanline_ptr = screen_ptr;
3368 u32 pitch = get_screen_pitch();
3369 u16 current_pixel;
3370 u32 i;
3371
3372 switch(video_scale)
3373 {
3374 case 2:
3375 integer_scale_horizontal(2);
3376 break;
3377
3378 case 3:
3379 integer_scale_horizontal(3);
3380 break;
3381
3382 default:
3383 case 4:
3384 integer_scale_horizontal(4);
3385 break;
3386
3387 }
3388
3389 for(y = 159, y2 = (160 * video_scale) - 1; y >= 0; y--)
3390 {
3391 for(i = 0; i < video_scale; i++)
3392 {
3393 memcpy(screen_ptr + (y2 * pitch),
3394 screen_ptr + (y * pitch), 480 * video_scale);
3395 y2--;
3396 }
3397 }
3398 }
3399#ifdef GP2X_BUILD
3400 {
3401 if((screen_scale == unscaled) &&
3402 (resolution_width == small_resolution_width) &&
3403 (resolution_height == small_resolution_height))
3404 {
3405 SDL_Rect srect = {0, 0, 240, 160};
3406 SDL_Rect drect = {40, 40, 240, 160};
3407 SDL_BlitSurface(screen, &srect, hw_screen, &drect);
3408 }
90206450 3409 else if((screen_scale == scaled_aspect) &&
3410 (resolution_width == small_resolution_width) &&
3411 (resolution_height == small_resolution_height))
3412 {
3413 SDL_Rect drect = {0, 10, 0, 0};
3414 SDL_BlitSurface(screen, NULL, hw_screen, &drect);
3415 }
2823a4c8 3416 else
3417 {
3418 SDL_BlitSurface(screen, NULL, hw_screen, NULL);
3419 }
01087863 3420 /* it is unclear if this syscall takes virtual or physical addresses,
3421 * but using virtual seems to work for me. */
3422 gp2x_flush_cache(hw_screen->pixels, hw_screen->pixels + 320*240, 0);
2823a4c8 3423 }
3424#else
3425 SDL_Flip(screen);
3426#endif
3427}
3428
3429#endif
3430
3431u32 frame_to_render;
3432
3433void update_screen()
3434{
3435 if(!skip_next_frame)
3436 flip_screen();
3437}
3438
3439#ifdef PSP_BUILD
3440
3441void init_video()
3442{
3443 sceDisplaySetMode(0, PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT);
3444
3445 sceDisplayWaitVblankStart();
3446 sceDisplaySetFrameBuf((void*)psp_gu_vram_base, PSP_LINE_SIZE,
3447 PSP_DISPLAY_PIXEL_FORMAT_565, PSP_DISPLAY_SETBUF_NEXTFRAME);
3448
3449 sceGuInit();
3450
3451 sceGuStart(GU_DIRECT, display_list);
3452 sceGuDrawBuffer(GU_PSM_5650, (void*)0, PSP_LINE_SIZE);
3453 sceGuDispBuffer(PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT,
3454 (void*)0, PSP_LINE_SIZE);
3455 sceGuClear(GU_COLOR_BUFFER_BIT);
3456
3457 sceGuOffset(2048 - (PSP_SCREEN_WIDTH / 2), 2048 - (PSP_SCREEN_HEIGHT / 2));
3458 sceGuViewport(2048, 2048, PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT);
3459
3460 sceGuScissor(0, 0, PSP_SCREEN_WIDTH + 1, PSP_SCREEN_HEIGHT + 1);
3461 sceGuEnable(GU_SCISSOR_TEST);
3462 sceGuTexMode(GU_PSM_5650, 0, 0, GU_FALSE);
3463 sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
3464 sceGuTexFilter(GU_LINEAR, GU_LINEAR);
3465 sceGuEnable(GU_TEXTURE_2D);
3466
3467 sceGuFrontFace(GU_CW);
3468 sceGuDisable(GU_BLEND);
3469
3470 sceGuFinish();
3471 sceGuSync(0, 0);
3472
3473 sceDisplayWaitVblankStart();
3474 sceGuDisplay(GU_TRUE);
3475
3476 PspGeCallbackData gecb;
3477 gecb.signal_func = NULL;
3478 gecb.signal_arg = NULL;
3479 gecb.finish_func = Ge_Finish_Callback;
3480 gecb.finish_arg = NULL;
3481 gecbid = sceGeSetCallback(&gecb);
3482
3483 screen_vertex[0] = 0 + 0.5;
3484 screen_vertex[1] = 0 + 0.5;
3485 screen_vertex[2] = 0 + 0.5;
3486 screen_vertex[3] = 0 + 0.5;
3487 screen_vertex[4] = 0;
3488 screen_vertex[5] = GBA_SCREEN_WIDTH - 0.5;
3489 screen_vertex[6] = GBA_SCREEN_HEIGHT - 0.5;
3490 screen_vertex[7] = PSP_SCREEN_WIDTH - 0.5;
3491 screen_vertex[8] = PSP_SCREEN_HEIGHT - 0.5;
3492 screen_vertex[9] = 0;
3493
3494 // Set framebuffer to PSP VRAM
3495 GE_CMD(FBP, ((u32)psp_gu_vram_base & 0x00FFFFFF));
3496 GE_CMD(FBW, (((u32)psp_gu_vram_base & 0xFF000000) >> 8) | PSP_LINE_SIZE);
3497 // Set texture 0 to the screen texture
3498 GE_CMD(TBP0, ((u32)screen_texture & 0x00FFFFFF));
3499 GE_CMD(TBW0, (((u32)screen_texture & 0xFF000000) >> 8) | GBA_SCREEN_WIDTH);
3500 // Set the texture size to 256 by 256 (2^8 by 2^8)
3501 GE_CMD(TSIZE0, (8 << 8) | 8);
3502 // Flush the texture cache
3503 GE_CMD(TFLUSH, 0);
3504 // Use 2D coordinates, no indeces, no weights, 32bit float positions,
3505 // 32bit float texture coordinates
3506 GE_CMD(VTYPE, (1 << 23) | (0 << 11) | (0 << 9) |
3507 (3 << 7) | (0 << 5) | (0 << 2) | 3);
3508 // Set the base of the index list pointer to 0
3509 GE_CMD(BASE, 0);
3510 // Set the rest of index list pointer to 0 (not being used)
3511 GE_CMD(IADDR, 0);
3512 // Set the base of the screen vertex list pointer
3513 GE_CMD(BASE, ((u32)screen_vertex & 0xFF000000) >> 8);
3514 // Set the rest of the screen vertex list pointer
3515 GE_CMD(VADDR, ((u32)screen_vertex & 0x00FFFFFF));
3516 // Primitive kick: render sprite (primitive 6), 2 vertices
3517 GE_CMD(PRIM, (6 << 16) | 2);
3518 // Done with commands
3519 GE_CMD(FINISH, 0);
3520 // Raise signal interrupt
3521 GE_CMD(SIGNAL, 0);
3522 GE_CMD(NOP, 0);
3523 GE_CMD(NOP, 0);
3524}
3525
3526#else
3527
3528void init_video()
3529{
3530 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_NOPARACHUTE);
3531
3532#ifdef GP2X_BUILD
3533 SDL_GP2X_AllowGfxMemory(NULL, 0);
3534
3535 hw_screen = SDL_SetVideoMode(320 * video_scale, 240 * video_scale,
3536 16, SDL_HWSURFACE);
3537
3538 screen = SDL_CreateRGBSurface(SDL_HWSURFACE, 240 * video_scale,
3539 160 * video_scale, 16, 0xFFFF, 0xFFFF, 0xFFFF, 0);
3540
3541 gp2x_load_mmuhack();
3542#else
3543 screen = SDL_SetVideoMode(240 * video_scale, 160 * video_scale, 16, 0);
3544#endif
3545 SDL_ShowCursor(0);
3546}
3547
3548#endif
3549
3550video_scale_type screen_scale = scaled_aspect;
3551video_scale_type current_scale = scaled_aspect;
3552video_filter_type screen_filter = filter_bilinear;
3553
3554
3555#ifdef PSP_BUILD
3556
3557void video_resolution_large()
3558{
3559 if(video_direct != 1)
3560 {
3561 video_direct = 1;
3562 screen_pixels = psp_gu_vram_base;
3563 screen_pitch = 512;
3564 sceGuStart(GU_DIRECT, display_list);
3565 sceGuDispBuffer(PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT,
3566 (void*)0, PSP_LINE_SIZE);
3567 sceGuFinish();
3568 }
3569}
3570
3571void set_gba_resolution(video_scale_type scale)
3572{
3573 u32 filter_linear = 0;
3574 screen_scale = scale;
3575 switch(scale)
3576 {
3577 case unscaled:
3578 screen_vertex[2] = 120 + 0.5;
3579 screen_vertex[3] = 56 + 0.5;
3580 screen_vertex[7] = GBA_SCREEN_WIDTH + 120 - 0.5;
3581 screen_vertex[8] = GBA_SCREEN_HEIGHT + 56 - 0.5;
3582 break;
3583
3584 case scaled_aspect:
3585 screen_vertex[2] = 36 + 0.5;
3586 screen_vertex[3] = 0 + 0.5;
3587 screen_vertex[7] = 408 + 36 - 0.5;
3588 screen_vertex[8] = PSP_SCREEN_HEIGHT - 0.5;
3589 break;
3590
3591 case fullscreen:
3592 screen_vertex[2] = 0;
3593 screen_vertex[3] = 0;
3594 screen_vertex[7] = PSP_SCREEN_WIDTH;
3595 screen_vertex[8] = PSP_SCREEN_HEIGHT;
3596 break;
3597 }
3598
3599 sceGuStart(GU_DIRECT, display_list);
3600 if(screen_filter == filter_bilinear)
3601 sceGuTexFilter(GU_LINEAR, GU_LINEAR);
3602 else
3603 sceGuTexFilter(GU_NEAREST, GU_NEAREST);
3604
3605 sceGuFinish();
3606 sceGuSync(0, 0);
3607
3608 clear_screen(0x0000);
3609}
3610
3611void video_resolution_small()
3612{
3613 if(video_direct != 0)
3614 {
3615 set_gba_resolution(screen_scale);
3616 video_direct = 0;
3617 screen_pixels = screen_texture;
3618 screen_flip = 0;
3619 screen_pitch = 240;
3620 sceGuStart(GU_DIRECT, display_list);
3621 sceGuDispBuffer(PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT,
3622 (void*)0, PSP_LINE_SIZE);
3623 sceGuFinish();
3624 }
3625}
3626
3627void clear_screen(u16 color)
3628{
3629 u32 i;
3630 u16 *src_ptr = get_screen_pixels();
3631
3632 sceGuSync(0, 0);
3633
3634 for(i = 0; i < (512 * 272); i++, src_ptr++)
3635 {
3636 *src_ptr = color;
3637 }
3638
3639 // I don't know why this doesn't work.
3640/* color = (((color & 0x1F) * 255 / 31) << 0) |
3641 ((((color >> 5) & 0x3F) * 255 / 63) << 8) |
3642 ((((color >> 11) & 0x1F) * 255 / 31) << 16) | (0xFF << 24);
3643
3644 sceGuStart(GU_DIRECT, display_list);
3645 sceGuDrawBuffer(GU_PSM_5650, (void*)0, PSP_LINE_SIZE);
3646 //sceGuDispBuffer(PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT,
3647 // (void*)0, PSP_LINE_SIZE);
3648 sceGuClearColor(color);
3649 sceGuClear(GU_COLOR_BUFFER_BIT);
3650 sceGuFinish();
3651 sceGuSync(0, 0); */
3652}
3653
3654#else
3655
3656void video_resolution_large()
3657{
3658 current_scale = unscaled;
3659
3660#ifdef GP2X_BUILD
3661 SDL_FreeSurface(screen);
3662 SDL_GP2X_AllowGfxMemory(NULL, 0);
3663 hw_screen = SDL_SetVideoMode(320, 240, 16, SDL_HWSURFACE);
3664 screen = SDL_CreateRGBSurface(SDL_HWSURFACE, 320, 240, 16, 0xFFFF,
3665 0xFFFF, 0xFFFF, 0);
3666 resolution_width = 320;
3667 resolution_height = 240;
3668 SDL_ShowCursor(0);
3669
3670 gp2x_load_mmuhack();
3671#else
3672 screen = SDL_SetVideoMode(480, 272, 16, 0);
3673 resolution_width = 480;
3674 resolution_height = 272;
3675#endif
3676}
3677
3678void video_resolution_small()
3679{
3680 current_scale = screen_scale;
3681
3682#ifdef GP2X_BUILD
90206450 3683 int w, h;
2823a4c8 3684 SDL_FreeSurface(screen);
3685 SDL_GP2X_AllowGfxMemory(NULL, 0);
90206450 3686
3687 w = 320; h = 240;
3688 if (screen_scale != unscaled)
3689 {
3690 w = small_resolution_width * video_scale;
3691 h = small_resolution_height * video_scale;
3692 }
3693 if (screen_scale == scaled_aspect) h += 20;
3694 hw_screen = SDL_SetVideoMode(w, h, 16, SDL_HWSURFACE);
2823a4c8 3695
3696 screen = SDL_CreateRGBSurface(SDL_HWSURFACE,
3697 small_resolution_width * video_scale, small_resolution_height *
3698 video_scale, 16, 0xFFFF, 0xFFFF, 0xFFFF, 0);
3699
3700 SDL_ShowCursor(0);
3701
3702 gp2x_load_mmuhack();
3703#else
3704 screen = SDL_SetVideoMode(small_resolution_width * video_scale,
3705 small_resolution_height * video_scale, 16, 0);
3706#endif
3707 resolution_width = small_resolution_width;
3708 resolution_height = small_resolution_height;
3709}
3710
3711void set_gba_resolution(video_scale_type scale)
3712{
3713 if(screen_scale != scale)
3714 {
3715 screen_scale = scale;
3716 switch(scale)
3717 {
3718 case unscaled:
3719 case scaled_aspect:
3720 case fullscreen:
3721 small_resolution_width = 240 * video_scale;
3722 small_resolution_height = 160 * video_scale;
3723 break;
3724 }
3725 }
3726}
3727
3728void clear_screen(u16 color)
3729{
3730 u16 *dest_ptr = get_screen_pixels();
3731 u32 line_skip = get_screen_pitch() - screen->w;
3732 u32 x, y;
3733
3734 for(y = 0; y < screen->h; y++)
3735 {
3736 for(x = 0; x < screen->w; x++, dest_ptr++)
3737 {
3738 *dest_ptr = color;
3739 }
3740 dest_ptr += line_skip;
3741 }
3742}
3743
3744#endif
3745
3746u16 *copy_screen()
3747{
3748 u16 *copy = malloc(240 * 160 * 2);
3749 memcpy(copy, get_screen_pixels(), 240 * 160 * 2);
3750 return copy;
3751}
3752
3753void blit_to_screen(u16 *src, u32 w, u32 h, u32 dest_x, u32 dest_y)
3754{
3755 u32 pitch = get_screen_pitch();
3756 u16 *dest_ptr = get_screen_pixels() + dest_x + (dest_y * pitch);
3757
3758 u16 *src_ptr = src;
3759 u32 line_skip = pitch - w;
3760 u32 x, y;
3761
3762 for(y = 0; y < h; y++)
3763 {
3764 for(x = 0; x < w; x++, src_ptr++, dest_ptr++)
3765 {
3766 *dest_ptr = *src_ptr;
3767 }
3768 dest_ptr += line_skip;
3769 }
3770}
3771
3772void print_string_ext(const char *str, u16 fg_color, u16 bg_color,
3773 u32 x, u32 y, void *_dest_ptr, u32 pitch, u32 pad)
3774{
3775 u16 *dest_ptr = (u16 *)_dest_ptr + (y * pitch) + x;
3776 u8 current_char = str[0];
3777 u32 current_row;
3778 u32 glyph_offset;
3779 u32 i = 0, i2, i3;
3780 u32 str_index = 1;
3781 u32 current_x = x;
3782
3783
3784 /* EDIT */
90206450 3785 if(y + FONT_HEIGHT > resolution_height)
2823a4c8 3786 return;
3787
3788 while(current_char)
3789 {
3790 if(current_char == '\n')
3791 {
3792 y += FONT_HEIGHT;
3793 current_x = x;
3794 dest_ptr = get_screen_pixels() + (y * pitch) + x;
3795 }
3796 else
3797 {
3798 glyph_offset = _font_offset[current_char];
3799 current_x += FONT_WIDTH;
3800 for(i2 = 0; i2 < FONT_HEIGHT; i2++, glyph_offset++)
3801 {
3802 current_row = _font_bits[glyph_offset];
3803 for(i3 = 0; i3 < FONT_WIDTH; i3++)
3804 {
3805 if((current_row >> (15 - i3)) & 0x01)
3806 *dest_ptr = fg_color;
3807 else
3808 *dest_ptr = bg_color;
3809 dest_ptr++;
3810 }
3811 dest_ptr += (pitch - FONT_WIDTH);
3812 }
3813 dest_ptr = dest_ptr - (pitch * FONT_HEIGHT) + FONT_WIDTH;
3814 }
3815
3816 i++;
3817
3818 current_char = str[str_index];
3819
3820 if((i < pad) && (current_char == 0))
3821 {
3822 current_char = ' ';
3823 }
3824 else
3825 {
3826 str_index++;
3827 }
3828
90206450 3829 if(current_x + FONT_WIDTH > resolution_width /* EDIT */)
3830 {
3831 while (current_char && current_char != '\n')
3832 {
3833 current_char = str[str_index++];
3834 }
3835 }
2823a4c8 3836 }
3837}
3838
3839void print_string(const char *str, u16 fg_color, u16 bg_color,
3840 u32 x, u32 y)
3841{
3842 print_string_ext(str, fg_color, bg_color, x, y, get_screen_pixels(),
3843 get_screen_pitch(), 0);
3844}
3845
3846void print_string_pad(const char *str, u16 fg_color, u16 bg_color,
3847 u32 x, u32 y, u32 pad)
3848{
3849 print_string_ext(str, fg_color, bg_color, x, y, get_screen_pixels(),
3850 get_screen_pitch(), pad);
3851}
3852
3853u32 debug_cursor_x = 0;
3854u32 debug_cursor_y = 0;
3855
3856#ifdef STDIO_DEBUG
3857
3858void debug_screen_clear()
3859{
3860}
3861
3862void debug_screen_start()
3863{
3864}
3865
3866void debug_screen_end()
3867{
3868}
3869
3870void debug_screen_update()
3871{
3872}
3873
3874void debug_screen_printf(const char *format, ...)
3875{
3876 va_list ap;
3877
3878 va_start(ap, format);
3879 vprintf(format, ap);
3880 va_end(ap);
3881}
3882
3883void debug_screen_newline(u32 count)
3884{
3885 printf("\n");
3886}
3887
3888
3889#else
3890
3891void debug_screen_clear()
3892{
3893 debug_cursor_x = 0;
3894 debug_cursor_y = 0;
3895 clear_screen(0x0000);
3896}
3897
3898void debug_screen_start()
3899{
3900 video_resolution_large();
3901 debug_screen_clear();
3902}
3903
3904void debug_screen_end()
3905{
3906 video_resolution_small();
3907}
3908
3909void debug_screen_update()
3910{
3911 flip_screen();
3912}
3913
3914void debug_screen_printf(const char *format, ...)
3915{
3916 char str_buffer[512];
3917 u32 str_buffer_length;
3918 va_list ap;
3919
3920 va_start(ap, format);
3921 str_buffer_length = vsnprintf(str_buffer, 512, format, ap);
3922 va_end(ap);
3923
3924 printf("printing debug string %s at %d %d\n", str_buffer,
3925 debug_cursor_x, debug_cursor_y);
3926
3927 print_string(str_buffer, 0xFFFF, 0x0000, debug_cursor_x, debug_cursor_y);
3928 debug_cursor_x += FONT_WIDTH * str_buffer_length;
3929}
3930
3931void debug_screen_newline(u32 count)
3932{
3933 debug_cursor_x = 0;
3934 debug_cursor_y += FONT_HEIGHT * count;
3935}
3936
3937#endif
3938
3939void debug_screen_printl(const char *format, ...)
3940{
3941 va_list ap;
3942
3943 va_start(ap, format);
3944 debug_screen_printf(format, ap);
90206450 3945 debug_screen_newline(1);
3946// debug_screen_printf("\n");
2823a4c8 3947 va_end(ap);
3948}
3949
3950
3951#define video_savestate_builder(type) \
3952void video_##type##_savestate(file_tag_type savestate_file) \
3953{ \
3954 file_##type##_array(savestate_file, affine_reference_x); \
3955 file_##type##_array(savestate_file, affine_reference_y); \
3956} \
3957
3958video_savestate_builder(read);
3959video_savestate_builder(write_mem);
3960
3961
gpSP fork tuned for ARM Linux