2 * Copyright (C) 2011 Gilead Kutnick "Exophase" <exophase@gmail.com>
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
19 const u8 command_lengths[256] =
21 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00
22 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 10
23 3, 3, 3, 3, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8, 8, 8, // 20
24 5, 5, 5, 5, 8, 8, 8, 8, 7, 7, 7, 7, 11, 11, 11, 11, // 30
25 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, // 40
26 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, // 50
27 2, 2, 2, 2, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, // 60
28 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, // 70
29 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80
30 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 90
31 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // a0
32 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // b0
33 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // c0
34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // d0
35 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // e0
36 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // f0
39 void update_texture_ptr(psx_gpu_struct *psx_gpu)
43 switch((psx_gpu->render_state_base >> 8) & 0x3)
46 case TEXTURE_MODE_4BPP:
47 #ifdef TEXTURE_CACHE_4BPP
48 texture_ptr = psx_gpu->texture_4bpp_cache[psx_gpu->current_texture_page];
49 texture_ptr += psx_gpu->texture_window_x & 0xF;
50 texture_ptr += (psx_gpu->texture_window_y & 0xF) << 4;
51 texture_ptr += (psx_gpu->texture_window_x >> 4) << 8;
52 texture_ptr += (psx_gpu->texture_window_y >> 4) << 12;
54 texture_ptr = (u8 *)(psx_gpu->vram_ptr);
55 texture_ptr += (psx_gpu->current_texture_page & 0xF) * 128;
56 texture_ptr += ((psx_gpu->current_texture_page >> 4) * 256) * 2048;
57 texture_ptr += psx_gpu->texture_window_x / 2;
58 texture_ptr += (psx_gpu->texture_window_y) * 2048;
62 case TEXTURE_MODE_8BPP:
63 #ifdef TEXTURE_CACHE_8BPP
64 if(psx_gpu->current_texture_page & 0x1)
67 psx_gpu->texture_8bpp_odd_cache[psx_gpu->current_texture_page >> 1];
72 psx_gpu->texture_8bpp_even_cache[psx_gpu->current_texture_page >> 1];
75 texture_ptr += (psx_gpu->texture_window_y & 0xF) << 4;
76 texture_ptr += (psx_gpu->texture_window_x >> 4) << 8;
77 texture_ptr += (psx_gpu->texture_window_y >> 4) << 12;
79 texture_ptr = (u8 *)(psx_gpu->vram_ptr);
80 texture_ptr += (psx_gpu->current_texture_page & 0xF) * 128;
81 texture_ptr += ((psx_gpu->current_texture_page >> 4) * 256) * 2048;
82 texture_ptr += psx_gpu->texture_window_x;
83 texture_ptr += (psx_gpu->texture_window_y) * 2048;
87 case TEXTURE_MODE_16BPP:
88 texture_ptr = (u8 *)(psx_gpu->vram_ptr);
89 texture_ptr += (psx_gpu->current_texture_page & 0xF) * 128;
90 texture_ptr += ((psx_gpu->current_texture_page >> 4) * 256) * 2048;
91 texture_ptr += psx_gpu->texture_window_x * 2;
92 texture_ptr += (psx_gpu->texture_window_y) * 2048;
96 psx_gpu->texture_page_ptr = texture_ptr;
99 void set_texture(psx_gpu_struct *psx_gpu, u32 texture_settings)
101 if(psx_gpu->texture_settings != texture_settings)
103 u32 new_texture_page = texture_settings & 0x1F;
104 u32 texture_mode = (texture_settings >> 7) & 0x3;
105 u32 render_state_base = psx_gpu->render_state_base;
107 if(psx_gpu->current_texture_page != new_texture_page)
108 flush_render_block_buffer(psx_gpu);
110 render_state_base &= ~(0xF << 6);
111 render_state_base |= ((texture_settings >> 5) & 0xF) << 6;
113 psx_gpu->render_state_base = render_state_base;
115 psx_gpu->current_texture_mask = 0x1 << new_texture_page;
117 if(texture_mode == TEXTURE_MODE_8BPP)
119 // In 8bpp mode 256x256 takes up two pages. If it's on the right edge it
120 // wraps back around to the left edge.
121 u32 adjacent_texture_page = ((texture_settings + 1) & 0xF) | (texture_settings & 0x10);
122 psx_gpu->current_texture_mask |= 0x1 << adjacent_texture_page;
124 if((psx_gpu->last_8bpp_texture_page ^ new_texture_page) & 0x1)
126 u32 dirty_textures_8bpp_alternate_mask =
127 psx_gpu->dirty_textures_8bpp_alternate_mask;
128 psx_gpu->dirty_textures_8bpp_alternate_mask =
129 psx_gpu->dirty_textures_8bpp_mask;
130 psx_gpu->dirty_textures_8bpp_mask = dirty_textures_8bpp_alternate_mask;
133 psx_gpu->last_8bpp_texture_page = new_texture_page;
136 psx_gpu->current_texture_page = new_texture_page;
137 psx_gpu->texture_settings = texture_settings;
139 update_texture_ptr(psx_gpu);
143 void set_clut(psx_gpu_struct *psx_gpu, u32 clut_settings)
145 if(psx_gpu->clut_settings != clut_settings)
147 flush_render_block_buffer(psx_gpu);
148 psx_gpu->clut_settings = clut_settings;
149 psx_gpu->clut_ptr = psx_gpu->vram_ptr + ((clut_settings & 0x7FFF) * 16);
153 void set_triangle_color(psx_gpu_struct *psx_gpu, u32 triangle_color)
155 if(psx_gpu->triangle_color != triangle_color)
157 flush_render_block_buffer(psx_gpu);
158 psx_gpu->triangle_color = triangle_color;
162 #define sign_extend_12bit(value) \
163 (((s32)((value) << 20)) >> 20) \
165 #define get_vertex_data_xy(vertex_number, offset16) \
166 vertexes[vertex_number].x = \
167 sign_extend_12bit(list_s16[offset16]) + psx_gpu->offset_x; \
168 vertexes[vertex_number].y = \
169 sign_extend_12bit(list_s16[(offset16) + 1]) + psx_gpu->offset_y; \
171 #define get_vertex_data_uv(vertex_number, offset16) \
172 vertexes[vertex_number].u = list_s16[offset16] & 0xFF; \
173 vertexes[vertex_number].v = (list_s16[offset16] >> 8) & 0xFF \
175 #define get_vertex_data_rgb(vertex_number, offset32) \
176 vertexes[vertex_number].r = list[offset32] & 0xFF; \
177 vertexes[vertex_number].g = (list[offset32] >> 8) & 0xFF; \
178 vertexes[vertex_number].b = (list[offset32] >> 16) & 0xFF \
180 #define get_vertex_data_xy_uv(vertex_number, offset16) \
181 get_vertex_data_xy(vertex_number, offset16); \
182 get_vertex_data_uv(vertex_number, (offset16) + 2) \
184 #define get_vertex_data_xy_rgb(vertex_number, offset16) \
185 get_vertex_data_rgb(vertex_number, (offset16) / 2); \
186 get_vertex_data_xy(vertex_number, (offset16) + 2); \
188 #define get_vertex_data_xy_uv_rgb(vertex_number, offset16) \
189 get_vertex_data_rgb(vertex_number, (offset16) / 2); \
190 get_vertex_data_xy(vertex_number, (offset16) + 2); \
191 get_vertex_data_uv(vertex_number, (offset16) + 4); \
193 #define set_vertex_color_constant(vertex_number, color) \
194 vertexes[vertex_number].r = color & 0xFF; \
195 vertexes[vertex_number].g = (color >> 8) & 0xFF; \
196 vertexes[vertex_number].b = (color >> 16) & 0xFF \
198 #define get_vertex_data_xy_rgb_constant(vertex_number, offset16, color) \
199 get_vertex_data_xy(vertex_number, offset16); \
200 set_vertex_color_constant(vertex_number, color) \
202 vertex_struct vertexes[4] __attribute__((aligned(32)));
204 void gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size)
206 u32 current_command, command_length;
208 u32 *list_end = list + (size / 4);
210 for(; list < list_end; list += 1 + command_length)
212 s16 *list_s16 = (void *)list;
213 current_command = *list >> 24;
214 command_length = command_lengths[current_command];
216 switch(current_command)
222 render_block_fill(psx_gpu, list[0] & 0xFFFFFF, list_s16[2], list_s16[3],
223 list_s16[4] & 0x3FF, list_s16[5] & 0x3FF);
228 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
230 get_vertex_data_xy(0, 2);
231 get_vertex_data_xy(1, 4);
232 get_vertex_data_xy(2, 6);
234 render_triangle(psx_gpu, vertexes, current_command);
240 set_clut(psx_gpu, list_s16[5]);
241 set_texture(psx_gpu, list_s16[9]);
242 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
244 get_vertex_data_xy_uv(0, 2);
245 get_vertex_data_xy_uv(1, 6);
246 get_vertex_data_xy_uv(2, 10);
248 render_triangle(psx_gpu, vertexes, current_command);
254 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
256 get_vertex_data_xy(0, 2);
257 get_vertex_data_xy(1, 4);
258 get_vertex_data_xy(2, 6);
259 get_vertex_data_xy(3, 8);
261 render_triangle(psx_gpu, vertexes, current_command);
262 render_triangle(psx_gpu, &(vertexes[1]), current_command);
268 set_clut(psx_gpu, list_s16[5]);
269 set_texture(psx_gpu, list_s16[9]);
270 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
272 get_vertex_data_xy_uv(0, 2);
273 get_vertex_data_xy_uv(1, 6);
274 get_vertex_data_xy_uv(2, 10);
275 get_vertex_data_xy_uv(3, 14);
277 render_triangle(psx_gpu, vertexes, current_command);
278 render_triangle(psx_gpu, &(vertexes[1]), current_command);
284 get_vertex_data_xy_rgb(0, 0);
285 get_vertex_data_xy_rgb(1, 4);
286 get_vertex_data_xy_rgb(2, 8);
288 render_triangle(psx_gpu, vertexes, current_command);
297 set_clut(psx_gpu, list_s16[5]);
298 set_texture(psx_gpu, list_s16[11]);
300 get_vertex_data_xy_uv_rgb(0, 0);
301 get_vertex_data_xy_uv_rgb(1, 6);
302 get_vertex_data_xy_uv_rgb(2, 12);
304 render_triangle(psx_gpu, vertexes, current_command);
313 get_vertex_data_xy_rgb(0, 0);
314 get_vertex_data_xy_rgb(1, 4);
315 get_vertex_data_xy_rgb(2, 8);
316 get_vertex_data_xy_rgb(3, 12);
318 render_triangle(psx_gpu, vertexes, current_command);
319 render_triangle(psx_gpu, &(vertexes[1]), current_command);
328 set_clut(psx_gpu, list_s16[5]);
329 set_texture(psx_gpu, list_s16[11]);
331 get_vertex_data_xy_uv_rgb(0, 0);
332 get_vertex_data_xy_uv_rgb(1, 6);
333 get_vertex_data_xy_uv_rgb(2, 12);
334 get_vertex_data_xy_uv_rgb(3, 18);
336 render_triangle(psx_gpu, vertexes, current_command);
337 render_triangle(psx_gpu, &(vertexes[1]), current_command);
343 vertexes[0].x = list_s16[2] + psx_gpu->offset_x;
344 vertexes[0].y = list_s16[3] + psx_gpu->offset_y;
345 vertexes[1].x = list_s16[4] + psx_gpu->offset_x;
346 vertexes[1].y = list_s16[5] + psx_gpu->offset_y;
348 render_line(psx_gpu, vertexes, current_command, list[0]);
354 u32 num_vertexes = 1;
355 u32 *list_position = &(list[2]);
358 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
359 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
367 vertexes[0] = vertexes[1];
369 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
370 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
375 render_line(psx_gpu, vertexes, current_command, list[0]);
379 command_length += (num_vertexes - 2);
386 vertexes[0].r = list[0] & 0xFF;
387 vertexes[0].g = (list[0] >> 8) & 0xFF;
388 vertexes[0].b = (list[0] >> 16) & 0xFF;
389 vertexes[0].x = list_s16[2] + psx_gpu->offset_x;
390 vertexes[0].y = list_s16[3] + psx_gpu->offset_y;
392 vertexes[1].r = list[2] & 0xFF;
393 vertexes[1].g = (list[2] >> 8) & 0xFF;
394 vertexes[1].b = (list[2] >> 16) & 0xFF;
395 vertexes[1].x = list_s16[6] + psx_gpu->offset_x;
396 vertexes[1].y = list_s16[7] + psx_gpu->offset_y;
398 render_line(psx_gpu, vertexes, current_command, 0);
404 u32 num_vertexes = 1;
405 u32 *list_position = &(list[2]);
409 vertexes[1].r = color & 0xFF;
410 vertexes[1].g = (color >> 8) & 0xFF;
411 vertexes[1].b = (color >> 16) & 0xFF;
412 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
413 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
417 color = list_position[0];
418 if(color == 0x55555555)
421 xy = list_position[1];
423 vertexes[0] = vertexes[1];
425 vertexes[1].r = color & 0xFF;
426 vertexes[1].g = (color >> 8) & 0xFF;
427 vertexes[1].b = (color >> 16) & 0xFF;
428 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
429 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
434 render_line(psx_gpu, vertexes, current_command, 0);
438 command_length += ((num_vertexes * 2) - 2);
445 u32 x = list_s16[2] + psx_gpu->offset_x;
446 u32 y = list_s16[3] + psx_gpu->offset_y;
447 u32 width = list_s16[4] & 0x3FF;
448 u32 height = list_s16[5] & 0x1FF;
450 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
452 render_sprite(psx_gpu, x, y, 0, 0, width, height, current_command, list[0]);
458 u32 x = list_s16[2] + psx_gpu->offset_x;
459 u32 y = list_s16[3] + psx_gpu->offset_y;
460 u32 uv = list_s16[4];
461 u32 width = list_s16[6] & 0x3FF;
462 u32 height = list_s16[7] & 0x1FF;
464 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
465 set_clut(psx_gpu, list_s16[5]);
467 render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, width, height,
468 current_command, list[0]);
477 s32 x = list_s16[2] + psx_gpu->offset_x;
478 s32 y = list_s16[3] + psx_gpu->offset_y;
480 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
482 render_sprite(psx_gpu, x, y, 0, 0, 1, 1, current_command, list[0]);
491 s32 x = list_s16[2] + psx_gpu->offset_x;
492 s32 y = list_s16[3] + psx_gpu->offset_y;
494 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
496 render_sprite(psx_gpu, x, y, 0, 0, 8, 8, current_command, list[0]);
505 s32 x = list_s16[2] + psx_gpu->offset_x;
506 s32 y = list_s16[3] + psx_gpu->offset_y;
507 u32 uv = list_s16[4];
509 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
510 set_clut(psx_gpu, list_s16[5]);
512 render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, 8, 8,
513 current_command, list[0]);
522 s32 x = list_s16[2] + psx_gpu->offset_x;
523 s32 y = list_s16[3] + psx_gpu->offset_y;
525 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
526 render_sprite(psx_gpu, x, y, 0, 0, 16, 16, current_command, list[0]);
535 s32 x = list_s16[2] + psx_gpu->offset_x;
536 s32 y = list_s16[3] + psx_gpu->offset_y;
537 u32 uv = list_s16[4];
539 psx_gpu->primitive_color = list[0] & 0xFFFFFF;
540 set_clut(psx_gpu, list_s16[5]);
542 render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, 16, 16,
543 current_command, list[0]);
547 case 0x80: // vid -> vid
548 render_block_move(psx_gpu, list_s16[2] & 0x3FF, list_s16[3] & 0x1FF,
549 list_s16[4] & 0x3FF, list_s16[5] & 0x1FF, list_s16[6], list_s16[7]);
552 case 0xA0: // sys -> vid
554 u32 load_x = list_s16[2];
555 u32 load_y = list_s16[3];
556 u32 load_width = list_s16[4];
557 u32 load_height = list_s16[5];
558 u32 load_size = load_width * load_height;
560 command_length += load_size / 2;
562 render_block_copy(psx_gpu, (u16 *)&(list_s16[6]), load_x, load_y,
563 load_width, load_height, load_width);
567 case 0xC0: // vid -> sys
571 set_texture(psx_gpu, list[0] & 0x1FF);
572 if(list[0] & (1 << 9))
573 psx_gpu->render_state_base |= RENDER_STATE_DITHER;
575 psx_gpu->render_state_base &= ~RENDER_STATE_DITHER;
577 psx_gpu->display_area_draw_enable = (list[0] >> 10) & 0x1;
583 u32 texture_window_settings = list[0];
586 if(texture_window_settings != psx_gpu->texture_window_settings)
588 tmp = (texture_window_settings & 0x1F) | 0x20;
589 for(w = 8; (tmp & 1) == 0; tmp >>= 1, w <<= 1);
591 tmp = ((texture_window_settings >> 5) & 0x1f) | 0x20;
592 for (h = 8; (tmp & 1) == 0; tmp >>= 1, h <<= 1);
595 x = ((texture_window_settings >> 10) & tmp) << 3;
598 y = ((texture_window_settings >> 15) & tmp) << 3;
600 flush_render_block_buffer(psx_gpu);
602 psx_gpu->texture_window_x = x;
603 psx_gpu->texture_window_y = y;
604 psx_gpu->texture_mask_width = w - 1;
605 psx_gpu->texture_mask_height = h - 1;
607 update_texture_ptr(psx_gpu);
613 psx_gpu->viewport_start_x = list[0] & 0x3FF;
614 psx_gpu->viewport_start_y = (list[0] >> 10) & 0x1FF;
616 #ifdef TEXTURE_CACHE_4BPP
617 psx_gpu->viewport_mask =
618 texture_region_mask(psx_gpu->viewport_start_x,
619 psx_gpu->viewport_start_y, psx_gpu->viewport_end_x,
620 psx_gpu->viewport_end_y);
625 psx_gpu->viewport_end_x = list[0] & 0x3FF;
626 psx_gpu->viewport_end_y = (list[0] >> 10) & 0x1FF;
628 #ifdef TEXTURE_CACHE_4BPP
629 psx_gpu->viewport_mask =
630 texture_region_mask(psx_gpu->viewport_start_x,
631 psx_gpu->viewport_start_y, psx_gpu->viewport_end_x,
632 psx_gpu->viewport_end_y);
638 s32 offset_x = list[0] << 21;
639 s32 offset_y = list[0] << 10;
640 psx_gpu->offset_x = offset_x >> 21;
641 psx_gpu->offset_y = offset_y >> 21;
648 u32 mask_settings = list[0];
649 u16 mask_msb = mask_settings << 15;
652 psx_gpu->render_state_base |= RENDER_STATE_MASK_EVALUATE;
654 psx_gpu->render_state_base &= ~RENDER_STATE_MASK_EVALUATE;
656 if(mask_msb != psx_gpu->mask_msb)
658 flush_render_block_buffer(psx_gpu);
659 psx_gpu->mask_msb = mask_msb;