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)
44 switch((psx_gpu->render_state_base >> 8) & 0x3)
47 case TEXTURE_MODE_4BPP:
48 texture_base = psx_gpu->texture_4bpp_cache[psx_gpu->current_texture_page];
50 texture_ptr = texture_base;
51 texture_ptr += psx_gpu->texture_window_x & 0xF;
52 texture_ptr += (psx_gpu->texture_window_y & 0xF) << 4;
53 texture_ptr += (psx_gpu->texture_window_x >> 4) << 8;
54 texture_ptr += (psx_gpu->texture_window_y >> 4) << 12;
57 case TEXTURE_MODE_8BPP:
58 if(psx_gpu->current_texture_page & 0x1)
61 psx_gpu->texture_8bpp_odd_cache[psx_gpu->current_texture_page >> 1];
66 psx_gpu->texture_8bpp_even_cache[psx_gpu->current_texture_page >> 1];
69 texture_ptr = texture_base;
70 texture_ptr += psx_gpu->texture_window_x & 0xF;
71 texture_ptr += (psx_gpu->texture_window_y & 0xF) << 4;
72 texture_ptr += (psx_gpu->texture_window_x >> 4) << 8;
73 texture_ptr += (psx_gpu->texture_window_y >> 4) << 12;
76 case TEXTURE_MODE_16BPP:
77 texture_base = (u8 *)(psx_gpu->vram_ptr);
78 texture_base += (psx_gpu->current_texture_page & 0xF) * 128;
79 texture_base += ((psx_gpu->current_texture_page >> 4) * 256) * 2048;
81 texture_ptr = texture_base;
82 texture_ptr += psx_gpu->texture_window_x * 2;
83 texture_ptr += (psx_gpu->texture_window_y) * 2048;
87 psx_gpu->texture_page_base = texture_base;
88 psx_gpu->texture_page_ptr = texture_ptr;
91 void set_texture(psx_gpu_struct *psx_gpu, u32 texture_settings)
93 if(psx_gpu->texture_settings != texture_settings)
95 u32 new_texture_page = texture_settings & 0x1F;
96 u32 texture_mode = (texture_settings >> 7) & 0x3;
97 u32 render_state_base = psx_gpu->render_state_base;
99 flush_render_block_buffer(psx_gpu);
101 render_state_base &= ~(0xF << 6);
102 render_state_base |= ((texture_settings >> 5) & 0xF) << 6;
104 psx_gpu->render_state_base = render_state_base;
106 psx_gpu->current_texture_mask = 0x1 << new_texture_page;
108 if(texture_mode == TEXTURE_MODE_8BPP)
110 // In 8bpp mode 256x256 takes up two pages. If it's on the right edge it
111 // wraps back around to the left edge.
112 u32 adjacent_texture_page = ((texture_settings + 1) & 0xF) | (texture_settings & 0x10);
113 psx_gpu->current_texture_mask |= 0x1 << adjacent_texture_page;
115 if((psx_gpu->last_8bpp_texture_page ^ new_texture_page) & 0x1)
117 u32 dirty_textures_8bpp_alternate_mask =
118 psx_gpu->dirty_textures_8bpp_alternate_mask;
119 psx_gpu->dirty_textures_8bpp_alternate_mask =
120 psx_gpu->dirty_textures_8bpp_mask;
121 psx_gpu->dirty_textures_8bpp_mask = dirty_textures_8bpp_alternate_mask;
124 psx_gpu->last_8bpp_texture_page = new_texture_page;
127 psx_gpu->current_texture_page = new_texture_page;
128 psx_gpu->texture_settings = texture_settings;
130 update_texture_ptr(psx_gpu);
134 void set_clut(psx_gpu_struct *psx_gpu, u32 clut_settings)
136 if(psx_gpu->clut_settings != clut_settings)
138 flush_render_block_buffer(psx_gpu);
139 psx_gpu->clut_settings = clut_settings;
140 psx_gpu->clut_ptr = psx_gpu->vram_ptr + ((clut_settings & 0x7FFF) * 16);
144 void set_triangle_color(psx_gpu_struct *psx_gpu, u32 triangle_color)
146 if(psx_gpu->triangle_color != triangle_color)
148 flush_render_block_buffer(psx_gpu);
149 psx_gpu->triangle_color = triangle_color;
153 #define sign_extend_12bit(value) \
154 (((s32)((value) << 20)) >> 20) \
156 #define get_vertex_data_xy(vertex_number, offset16) \
157 vertexes[vertex_number].x = \
158 sign_extend_12bit(list_s16[offset16]) + psx_gpu->offset_x; \
159 vertexes[vertex_number].y = \
160 sign_extend_12bit(list_s16[(offset16) + 1]) + psx_gpu->offset_y; \
162 #define get_vertex_data_uv(vertex_number, offset16) \
163 vertexes[vertex_number].u = list_s16[offset16] & 0xFF; \
164 vertexes[vertex_number].v = (list_s16[offset16] >> 8) & 0xFF \
166 #define get_vertex_data_rgb(vertex_number, offset32) \
167 vertexes[vertex_number].r = list[offset32] & 0xFF; \
168 vertexes[vertex_number].g = (list[offset32] >> 8) & 0xFF; \
169 vertexes[vertex_number].b = (list[offset32] >> 16) & 0xFF \
171 #define get_vertex_data_xy_uv(vertex_number, offset16) \
172 get_vertex_data_xy(vertex_number, offset16); \
173 get_vertex_data_uv(vertex_number, (offset16) + 2) \
175 #define get_vertex_data_xy_rgb(vertex_number, offset16) \
176 get_vertex_data_rgb(vertex_number, (offset16) / 2); \
177 get_vertex_data_xy(vertex_number, (offset16) + 2); \
179 #define get_vertex_data_xy_uv_rgb(vertex_number, offset16) \
180 get_vertex_data_rgb(vertex_number, (offset16) / 2); \
181 get_vertex_data_xy(vertex_number, (offset16) + 2); \
182 get_vertex_data_uv(vertex_number, (offset16) + 4); \
184 #define set_vertex_color_constant(vertex_number, color) \
185 vertexes[vertex_number].r = color & 0xFF; \
186 vertexes[vertex_number].g = (color >> 8) & 0xFF; \
187 vertexes[vertex_number].b = (color >> 16) & 0xFF \
189 #define get_vertex_data_xy_rgb_constant(vertex_number, offset16, color) \
190 get_vertex_data_xy(vertex_number, offset16); \
191 set_vertex_color_constant(vertex_number, color) \
193 vertex_struct vertexes[4] __attribute__((aligned(32)));
195 void gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size)
197 u32 current_command, command_length;
199 u32 *list_end = list + (size / 4);
201 for(; list < list_end; list += 1 + command_length)
203 s16 *list_s16 = (void *)list;
204 current_command = *list >> 24;
205 command_length = command_lengths[current_command];
207 switch(current_command)
213 render_block_fill(psx_gpu, list[0] & 0xFFFFFF, list_s16[2] & 0x3FF,
214 list_s16[3] & 0x1FF, list_s16[4] & 0x3FF, list_s16[5] & 0x1FF);
219 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
221 get_vertex_data_xy(0, 2);
222 get_vertex_data_xy(1, 4);
223 get_vertex_data_xy(2, 6);
225 render_triangle(psx_gpu, vertexes, current_command);
231 set_clut(psx_gpu, list_s16[5]);
232 set_texture(psx_gpu, list_s16[9]);
233 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
235 get_vertex_data_xy_uv(0, 2);
236 get_vertex_data_xy_uv(1, 6);
237 get_vertex_data_xy_uv(2, 10);
239 render_triangle(psx_gpu, vertexes, current_command);
245 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
247 get_vertex_data_xy(0, 2);
248 get_vertex_data_xy(1, 4);
249 get_vertex_data_xy(2, 6);
250 get_vertex_data_xy(3, 8);
252 render_triangle(psx_gpu, vertexes, current_command);
253 render_triangle(psx_gpu, &(vertexes[1]), current_command);
259 set_clut(psx_gpu, list_s16[5]);
260 set_texture(psx_gpu, list_s16[9]);
261 set_triangle_color(psx_gpu, list[0] & 0xFFFFFF);
263 get_vertex_data_xy_uv(0, 2);
264 get_vertex_data_xy_uv(1, 6);
265 get_vertex_data_xy_uv(2, 10);
266 get_vertex_data_xy_uv(3, 14);
268 render_triangle(psx_gpu, vertexes, current_command);
269 render_triangle(psx_gpu, &(vertexes[1]), current_command);
275 get_vertex_data_xy_rgb(0, 0);
276 get_vertex_data_xy_rgb(1, 4);
277 get_vertex_data_xy_rgb(2, 8);
279 render_triangle(psx_gpu, vertexes, current_command);
288 set_clut(psx_gpu, list_s16[5]);
289 set_texture(psx_gpu, list_s16[11]);
291 get_vertex_data_xy_uv_rgb(0, 0);
292 get_vertex_data_xy_uv_rgb(1, 6);
293 get_vertex_data_xy_uv_rgb(2, 12);
295 render_triangle(psx_gpu, vertexes, current_command);
304 get_vertex_data_xy_rgb(0, 0);
305 get_vertex_data_xy_rgb(1, 4);
306 get_vertex_data_xy_rgb(2, 8);
307 get_vertex_data_xy_rgb(3, 12);
309 render_triangle(psx_gpu, vertexes, current_command);
310 render_triangle(psx_gpu, &(vertexes[1]), current_command);
319 set_clut(psx_gpu, list_s16[5]);
320 set_texture(psx_gpu, list_s16[11]);
322 get_vertex_data_xy_uv_rgb(0, 0);
323 get_vertex_data_xy_uv_rgb(1, 6);
324 get_vertex_data_xy_uv_rgb(2, 12);
325 get_vertex_data_xy_uv_rgb(3, 18);
327 render_triangle(psx_gpu, vertexes, current_command);
328 render_triangle(psx_gpu, &(vertexes[1]), current_command);
334 vertexes[0].x = list_s16[2] + psx_gpu->offset_x;
335 vertexes[0].y = list_s16[3] + psx_gpu->offset_y;
336 vertexes[1].x = list_s16[4] + psx_gpu->offset_x;
337 vertexes[1].y = list_s16[5] + psx_gpu->offset_y;
339 render_line(psx_gpu, vertexes, current_command, list[0]);
345 u32 num_vertexes = 1;
346 u32 *list_position = &(list[2]);
349 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
350 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
358 vertexes[0] = vertexes[1];
360 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
361 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
366 render_line(psx_gpu, vertexes, current_command, list[0]);
370 command_length += (num_vertexes - 2);
377 vertexes[0].r = list[0] & 0xFF;
378 vertexes[0].g = (list[0] >> 8) & 0xFF;
379 vertexes[0].b = (list[0] >> 16) & 0xFF;
380 vertexes[0].x = list_s16[2] + psx_gpu->offset_x;
381 vertexes[0].y = list_s16[3] + psx_gpu->offset_y;
383 vertexes[1].r = list[2] & 0xFF;
384 vertexes[1].g = (list[2] >> 8) & 0xFF;
385 vertexes[1].b = (list[2] >> 16) & 0xFF;
386 vertexes[1].x = list_s16[6] + psx_gpu->offset_x;
387 vertexes[1].y = list_s16[7] + psx_gpu->offset_y;
389 render_line(psx_gpu, vertexes, current_command, 0);
395 u32 num_vertexes = 1;
396 u32 *list_position = &(list[2]);
400 vertexes[1].r = color & 0xFF;
401 vertexes[1].g = (color >> 8) & 0xFF;
402 vertexes[1].b = (color >> 16) & 0xFF;
403 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
404 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
408 color = list_position[0];
409 if(color == 0x55555555)
412 xy = list_position[1];
414 vertexes[0] = vertexes[1];
416 vertexes[1].r = color & 0xFF;
417 vertexes[1].g = (color >> 8) & 0xFF;
418 vertexes[1].b = (color >> 16) & 0xFF;
419 vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
420 vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
425 render_line(psx_gpu, vertexes, current_command, 0);
429 command_length += ((num_vertexes * 2) - 2);
436 u32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
437 u32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
438 u32 width = list_s16[4] & 0x3FF;
439 u32 height = list_s16[5] & 0x1FF;
441 render_sprite(psx_gpu, x, y, 0, 0, width, height, current_command, list[0]);
447 u32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
448 u32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
449 u32 uv = list_s16[4];
450 u32 width = list_s16[6] & 0x3FF;
451 u32 height = list_s16[7] & 0x1FF;
453 set_clut(psx_gpu, list_s16[5]);
455 render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, width, height,
456 current_command, list[0]);
465 s32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
466 s32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
468 render_sprite(psx_gpu, x, y, 0, 0, 1, 1, current_command, list[0]);
477 s32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
478 s32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
480 render_sprite(psx_gpu, x, y, 0, 0, 8, 8, current_command, list[0]);
489 s32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
490 s32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
491 u32 uv = list_s16[4];
493 set_clut(psx_gpu, list_s16[5]);
495 render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, 8, 8,
496 current_command, list[0]);
505 s32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
506 s32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
508 render_sprite(psx_gpu, x, y, 0, 0, 16, 16, current_command, list[0]);
517 s32 x = sign_extend_12bit(list_s16[2]) + psx_gpu->offset_x;
518 s32 y = sign_extend_12bit(list_s16[3]) + psx_gpu->offset_y;
519 u32 uv = list_s16[4];
521 set_clut(psx_gpu, list_s16[5]);
523 render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, 16, 16,
524 current_command, list[0]);
528 case 0x80: // vid -> vid
529 render_block_move(psx_gpu, list_s16[2] & 0x3FF, list_s16[3] & 0x1FF,
530 list_s16[4] & 0x3FF, list_s16[5] & 0x1FF, list_s16[6], list_s16[7]);
533 case 0xA0: // sys -> vid
535 u32 load_x = list_s16[2] & 0x3FF;
536 u32 load_y = list_s16[3] & 0x1FF;
537 u32 load_width = list_s16[4] & 0x3FF;
538 u32 load_height = list_s16[5] & 0x1FF;
539 u32 load_size = load_width * load_height;
541 command_length += load_size / 2;
543 render_block_copy(psx_gpu, (u16 *)&(list_s16[6]), load_x, load_y,
544 load_width, load_height, load_width);
548 case 0xC0: // vid -> sys
552 set_texture(psx_gpu, list[0] & 0x1FF);
553 if(list[0] & (1 << 9))
554 psx_gpu->render_state_base |= RENDER_STATE_DITHER;
556 psx_gpu->render_state_base &= ~RENDER_STATE_DITHER;
558 psx_gpu->display_area_draw_enable = (list[0] >> 10) & 0x1;
564 u32 texture_window_settings = list[0];
567 if(texture_window_settings != psx_gpu->texture_window_settings)
569 tmp = (texture_window_settings & 0x1F) | 0x20;
570 for(w = 8; (tmp & 1) == 0; tmp >>= 1, w <<= 1);
572 tmp = ((texture_window_settings >> 5) & 0x1f) | 0x20;
573 for (h = 8; (tmp & 1) == 0; tmp >>= 1, h <<= 1);
576 x = ((texture_window_settings >> 10) & tmp) << 3;
579 y = ((texture_window_settings >> 15) & tmp) << 3;
581 flush_render_block_buffer(psx_gpu);
583 psx_gpu->texture_window_settings = texture_window_settings;
584 psx_gpu->texture_window_x = x;
585 psx_gpu->texture_window_y = y;
586 psx_gpu->texture_mask_width = w - 1;
587 psx_gpu->texture_mask_height = h - 1;
589 update_texture_ptr(psx_gpu);
595 psx_gpu->viewport_start_x = list[0] & 0x3FF;
596 psx_gpu->viewport_start_y = (list[0] >> 10) & 0x1FF;
598 #ifdef TEXTURE_CACHE_4BPP
599 psx_gpu->viewport_mask =
600 texture_region_mask(psx_gpu->viewport_start_x,
601 psx_gpu->viewport_start_y, psx_gpu->viewport_end_x,
602 psx_gpu->viewport_end_y);
607 psx_gpu->viewport_end_x = list[0] & 0x3FF;
608 psx_gpu->viewport_end_y = (list[0] >> 10) & 0x1FF;
610 #ifdef TEXTURE_CACHE_4BPP
611 psx_gpu->viewport_mask =
612 texture_region_mask(psx_gpu->viewport_start_x,
613 psx_gpu->viewport_start_y, psx_gpu->viewport_end_x,
614 psx_gpu->viewport_end_y);
620 s32 offset_x = list[0] << 21;
621 s32 offset_y = list[0] << 10;
622 psx_gpu->offset_x = offset_x >> 21;
623 psx_gpu->offset_y = offset_y >> 21;
630 u32 mask_settings = list[0];
631 u16 mask_msb = mask_settings << 15;
634 psx_gpu->render_state_base |= RENDER_STATE_MASK_EVALUATE;
636 psx_gpu->render_state_base &= ~RENDER_STATE_MASK_EVALUATE;
638 if(mask_msb != psx_gpu->mask_msb)
640 flush_render_block_buffer(psx_gpu);
641 psx_gpu->mask_msb = mask_msb;