4 * PVR2 (Video) Core module implementation and MMIO registers.
6 * Copyright (c) 2005 Nathan Keynes.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 #define MODULE pvr2_module
27 #include "pvr2/pvr2.h"
28 #include "pvr2/pvr2mmio.h"
29 #include "pvr2/scene.h"
32 #include "pvr2/pvr2mmio.h"
34 unsigned char *video_base;
36 #define MAX_RENDER_BUFFERS 4
38 #define HPOS_PER_FRAME 0
39 #define HPOS_PER_LINECOUNT 1
41 static void pvr2_init( void );
42 static void pvr2_reset( void );
43 static uint32_t pvr2_run_slice( uint32_t );
44 static void pvr2_save_state( FILE *f );
45 static int pvr2_load_state( FILE *f );
46 static void pvr2_update_raster_posn( uint32_t nanosecs );
47 static void pvr2_schedule_scanline_event( int eventid, int line, int minimum_lines, int line_time_ns );
48 static render_buffer_t pvr2_get_render_buffer( frame_buffer_t frame );
49 static render_buffer_t pvr2_next_render_buffer( );
50 static render_buffer_t pvr2_frame_buffer_to_render_buffer( frame_buffer_t frame );
51 uint32_t pvr2_get_sync_status();
53 void pvr2_display_frame( void );
55 static int output_colour_formats[] = { COLFMT_BGRA1555, COLFMT_RGB565, COLFMT_BGR888, COLFMT_BGRA8888 };
56 static int render_colour_formats[8] = {
57 COLFMT_BGRA1555, COLFMT_RGB565, COLFMT_BGRA4444, COLFMT_BGRA1555,
58 COLFMT_BGR888, COLFMT_BGRA8888, COLFMT_BGRA8888, COLFMT_BGRA4444 };
61 struct dreamcast_module pvr2_module = { "PVR2", pvr2_init, pvr2_reset, NULL,
63 pvr2_save_state, pvr2_load_state };
66 display_driver_t display_driver = NULL;
71 uint32_t line_remainder;
72 uint32_t cycles_run; /* Cycles already executed prior to main time slice */
73 uint32_t irq_hpos_line;
74 uint32_t irq_hpos_line_count;
75 uint32_t irq_hpos_mode;
76 uint32_t irq_hpos_time_ns; /* Time within the line */
79 uint32_t odd_even_field; /* 1 = odd, 0 = even */
80 int32_t palette_changed; /* TRUE if palette has changed since last render */
85 uint32_t line_time_ns;
87 uint32_t hsync_width_ns;
88 uint32_t front_porch_ns;
89 uint32_t back_porch_ns;
90 uint32_t retrace_start_line;
91 uint32_t retrace_end_line;
95 static gchar *save_next_render_filename;
96 static render_buffer_t render_buffers[MAX_RENDER_BUFFERS];
97 static uint32_t render_buffer_count = 0;
98 static render_buffer_t displayed_render_buffer = NULL;
99 static uint32_t displayed_border_colour = 0;
102 * Event handler for the hpos callback
104 static void pvr2_hpos_callback( int eventid ) {
105 asic_event( eventid );
106 pvr2_update_raster_posn(sh4r.slice_cycle);
107 if( pvr2_state.irq_hpos_mode == HPOS_PER_LINECOUNT ) {
108 pvr2_state.irq_hpos_line += pvr2_state.irq_hpos_line_count;
109 while( pvr2_state.irq_hpos_line > (pvr2_state.total_lines>>1) ) {
110 pvr2_state.irq_hpos_line -= (pvr2_state.total_lines>>1);
113 pvr2_schedule_scanline_event( eventid, pvr2_state.irq_hpos_line, 1,
114 pvr2_state.irq_hpos_time_ns );
118 * Event handler for the scanline callbacks. Fires the corresponding
119 * ASIC event, and resets the timer for the next field.
121 static void pvr2_scanline_callback( int eventid )
123 asic_event( eventid );
124 pvr2_update_raster_posn(sh4r.slice_cycle);
125 if( eventid == EVENT_SCANLINE1 ) {
126 pvr2_schedule_scanline_event( eventid, pvr2_state.irq_vpos1, 1, 0 );
128 pvr2_schedule_scanline_event( eventid, pvr2_state.irq_vpos2, 1, 0 );
132 static void pvr2_gunpos_callback( int eventid )
134 pvr2_update_raster_posn(sh4r.slice_cycle);
135 int hpos = pvr2_state.line_remainder * pvr2_state.dot_clock / 1000000;
136 MMIO_WRITE( PVR2, GUNPOS, ((pvr2_state.line_count<<16)|(hpos&0x3FF)) );
137 asic_event( EVENT_MAPLE_DMA );
140 static void pvr2_init( void )
143 register_io_region( &mmio_region_PVR2 );
144 register_io_region( &mmio_region_PVR2PAL );
145 register_io_region( &mmio_region_PVR2TA );
146 register_event_callback( EVENT_HPOS, pvr2_hpos_callback );
147 register_event_callback( EVENT_SCANLINE1, pvr2_scanline_callback );
148 register_event_callback( EVENT_SCANLINE2, pvr2_scanline_callback );
149 register_event_callback( EVENT_GUNPOS, pvr2_gunpos_callback );
150 video_base = mem_get_region_by_name( MEM_REGION_VIDEO );
154 save_next_render_filename = NULL;
155 for( i=0; i<MAX_RENDER_BUFFERS; i++ ) {
156 render_buffers[i] = NULL;
158 render_buffer_count = 0;
159 displayed_render_buffer = NULL;
160 displayed_border_colour = 0;
163 static void pvr2_reset( void )
166 pvr2_state.line_count = 0;
167 pvr2_state.line_remainder = 0;
168 pvr2_state.cycles_run = 0;
169 pvr2_state.irq_vpos1 = 0;
170 pvr2_state.irq_vpos2 = 0;
171 pvr2_state.dot_clock = PVR2_DOT_CLOCK;
172 pvr2_state.back_porch_ns = 4000;
173 pvr2_state.palette_changed = FALSE;
174 mmio_region_PVR2_write( DISP_TOTAL, 0x0270035F );
175 mmio_region_PVR2_write( DISP_SYNCTIME, 0x07D6A53F );
176 mmio_region_PVR2_write( YUV_ADDR, 0 );
177 mmio_region_PVR2_write( YUV_CFG, 0 );
181 if( display_driver ) {
182 display_driver->display_blank(0);
183 for( i=0; i<render_buffer_count; i++ ) {
184 display_driver->destroy_render_buffer(render_buffers[i]);
185 render_buffers[i] = NULL;
187 render_buffer_count = 0;
191 void pvr2_save_render_buffer( FILE *f, render_buffer_t buffer )
193 struct frame_buffer fbuf;
195 fbuf.width = buffer->width;
196 fbuf.height = buffer->height;
197 fbuf.rowstride = fbuf.width*3;
198 fbuf.colour_format = COLFMT_BGR888;
199 fbuf.inverted = buffer->inverted;
200 fbuf.data = g_malloc0( buffer->width * buffer->height * 3 );
202 display_driver->read_render_buffer( fbuf.data, buffer, fbuf.rowstride, COLFMT_BGR888 );
203 write_png_to_stream( f, &fbuf );
206 fwrite( &buffer->rowstride, sizeof(buffer->rowstride), 1, f );
207 fwrite( &buffer->colour_format, sizeof(buffer->colour_format), 1, f );
208 fwrite( &buffer->address, sizeof(buffer->address), 1, f );
209 fwrite( &buffer->scale, sizeof(buffer->scale), 1, f );
210 int32_t flushed = (int32_t)buffer->flushed; // Force to 32-bits for save-file consistency
211 fwrite( &flushed, sizeof(flushed), 1, f );
215 render_buffer_t pvr2_load_render_buffer( FILE *f )
217 frame_buffer_t frame = read_png_from_stream( f );
218 if( frame == NULL ) {
222 render_buffer_t buffer = pvr2_frame_buffer_to_render_buffer(frame);
223 if( buffer != NULL ) {
225 fread( &buffer->rowstride, sizeof(buffer->rowstride), 1, f );
226 fread( &buffer->colour_format, sizeof(buffer->colour_format), 1, f );
227 fread( &buffer->address, sizeof(buffer->address), 1, f );
228 fread( &buffer->scale, sizeof(buffer->scale), 1, f );
229 fread( &flushed, sizeof(flushed), 1, f );
230 buffer->flushed = (gboolean)flushed;
232 fseek( f, sizeof(buffer->rowstride)+sizeof(buffer->colour_format)+
233 sizeof(buffer->address)+sizeof(buffer->scale)+
234 sizeof(int32_t), SEEK_CUR );
242 void pvr2_save_render_buffers( FILE *f )
245 uint32_t has_frontbuffer;
246 fwrite( &render_buffer_count, sizeof(render_buffer_count), 1, f );
247 if( displayed_render_buffer != NULL ) {
249 fwrite( &has_frontbuffer, sizeof(has_frontbuffer), 1, f );
250 pvr2_save_render_buffer( f, displayed_render_buffer );
253 fwrite( &has_frontbuffer, sizeof(has_frontbuffer), 1, f );
256 for( i=0; i<render_buffer_count; i++ ) {
257 if( render_buffers[i] != displayed_render_buffer && render_buffers[i] != NULL ) {
258 pvr2_save_render_buffer( f, render_buffers[i] );
263 gboolean pvr2_load_render_buffers( FILE *f )
265 uint32_t count, has_frontbuffer;
268 fread( &count, sizeof(count), 1, f );
269 if( count > MAX_RENDER_BUFFERS ) {
272 fread( &has_frontbuffer, sizeof(has_frontbuffer), 1, f );
273 for( i=0; i<render_buffer_count; i++ ) {
274 display_driver->destroy_render_buffer(render_buffers[i]);
275 render_buffers[i] = NULL;
277 render_buffer_count = 0;
279 if( has_frontbuffer ) {
280 displayed_render_buffer = pvr2_load_render_buffer(f);
281 if( displayed_render_buffer == NULL )
283 display_driver->display_render_buffer( displayed_render_buffer );
287 for( i=0; i<count; i++ ) {
288 if( pvr2_load_render_buffer( f ) == NULL )
295 static void pvr2_save_state( FILE *f )
297 pvr2_save_render_buffers( f );
298 fwrite( &pvr2_state, sizeof(pvr2_state), 1, f );
299 pvr2_ta_save_state( f );
300 pvr2_yuv_save_state( f );
303 static int pvr2_load_state( FILE *f )
305 if( !pvr2_load_render_buffers(f) )
307 if( fread( &pvr2_state, sizeof(pvr2_state), 1, f ) != 1 )
309 if( pvr2_ta_load_state(f) ) {
312 return pvr2_yuv_load_state(f);
316 * Update the current raster position to the given number of nanoseconds,
317 * relative to the last time slice. (ie the raster will be adjusted forward
318 * by nanosecs - nanosecs_already_run_this_timeslice)
320 static void pvr2_update_raster_posn( uint32_t nanosecs )
322 uint32_t old_line_count = pvr2_state.line_count;
323 if( pvr2_state.line_time_ns == 0 ) {
324 return; /* do nothing */
326 pvr2_state.line_remainder += (nanosecs - pvr2_state.cycles_run);
327 pvr2_state.cycles_run = nanosecs;
328 while( pvr2_state.line_remainder >= pvr2_state.line_time_ns ) {
329 pvr2_state.line_count ++;
330 pvr2_state.line_remainder -= pvr2_state.line_time_ns;
333 if( pvr2_state.line_count >= pvr2_state.total_lines ) {
334 pvr2_state.line_count -= pvr2_state.total_lines;
335 if( pvr2_state.interlaced ) {
336 pvr2_state.odd_even_field = !pvr2_state.odd_even_field;
339 if( pvr2_state.line_count >= pvr2_state.retrace_end_line &&
340 (old_line_count < pvr2_state.retrace_end_line ||
341 old_line_count > pvr2_state.line_count) ) {
342 pvr2_state.frame_count++;
343 pvr2_display_frame();
347 static uint32_t pvr2_run_slice( uint32_t nanosecs )
349 pvr2_update_raster_posn( nanosecs );
350 pvr2_state.cycles_run = 0;
354 int pvr2_get_frame_count()
356 return pvr2_state.frame_count;
359 void pvr2_redraw_display()
361 if( display_driver != NULL ) {
362 if( displayed_render_buffer == NULL ) {
363 display_driver->display_blank(displayed_border_colour);
365 display_driver->display_render_buffer(displayed_render_buffer);
370 gboolean pvr2_save_next_scene( const gchar *filename )
372 if( save_next_render_filename != NULL ) {
373 g_free( save_next_render_filename );
375 save_next_render_filename = g_strdup(filename);
382 * Display the next frame, copying the current contents of video ram to
383 * the window. If the video configuration has changed, first recompute the
384 * new frame size/depth.
386 void pvr2_display_frame( void )
388 int dispmode = MMIO_READ( PVR2, DISP_MODE );
389 int vidcfg = MMIO_READ( PVR2, DISP_SYNCCFG );
390 gboolean bEnabled = (dispmode & DISPMODE_ENABLE) && (vidcfg & DISPCFG_VO ) ? TRUE : FALSE;
392 if( display_driver == NULL ) {
393 return; /* can't really do anything much */
394 } else if( !bEnabled ) {
395 /* Output disabled == black */
396 displayed_render_buffer = NULL;
397 displayed_border_colour = 0;
398 display_driver->display_blank( 0 );
399 } else if( MMIO_READ( PVR2, DISP_CFG2 ) & 0x08 ) {
400 /* Enabled but blanked - border colour */
401 displayed_border_colour = MMIO_READ( PVR2, DISP_BORDER );
402 displayed_render_buffer = NULL;
403 display_driver->display_blank( displayed_border_colour );
405 /* Real output - determine dimensions etc */
406 struct frame_buffer fbuf;
407 uint32_t dispsize = MMIO_READ( PVR2, DISP_SIZE );
408 int vid_stride = (((dispsize & DISPSIZE_MODULO) >> 20) - 1);
409 int vid_ppl = ((dispsize & DISPSIZE_PPL)) + 1;
411 fbuf.colour_format = output_colour_formats[(dispmode & DISPMODE_COLFMT) >> 2];
412 fbuf.width = vid_ppl << 2 / colour_formats[fbuf.colour_format].bpp;
413 fbuf.height = ((dispsize & DISPSIZE_LPF) >> 10) + 1;
414 fbuf.size = vid_ppl << 2 * fbuf.height;
415 fbuf.rowstride = (vid_ppl + vid_stride) << 2;
417 /* Determine the field to display, and deinterlace if possible */
418 if( pvr2_state.interlaced ) {
419 if( vid_ppl == vid_stride ) { /* Magic deinterlace */
420 fbuf.height = fbuf.height << 1;
421 fbuf.rowstride = vid_ppl << 2;
422 fbuf.address = MMIO_READ( PVR2, DISP_ADDR1 );
424 /* Just display the field as is, folks. This is slightly tricky -
425 * we pick the field based on which frame is about to come through,
426 * which may not be the same as the odd_even_field.
428 gboolean oddfield = pvr2_state.odd_even_field;
429 if( pvr2_state.line_count >= pvr2_state.retrace_start_line ) {
430 oddfield = !oddfield;
433 fbuf.address = MMIO_READ( PVR2, DISP_ADDR1 );
435 fbuf.address = MMIO_READ( PVR2, DISP_ADDR2 );
439 fbuf.address = MMIO_READ( PVR2, DISP_ADDR1 );
441 fbuf.address = (fbuf.address & 0x00FFFFFF) + PVR2_RAM_BASE;
442 fbuf.inverted = FALSE;
443 fbuf.data = video_base + (fbuf.address&0x00FFFFFF);
445 render_buffer_t rbuf = pvr2_get_render_buffer( &fbuf );
447 rbuf = pvr2_frame_buffer_to_render_buffer( &fbuf );
449 displayed_render_buffer = rbuf;
451 display_driver->display_render_buffer( rbuf );
457 * This has to handle every single register individually as they all get masked
458 * off differently (and its easier to do it at write time)
460 void mmio_region_PVR2_write( uint32_t reg, uint32_t val )
462 if( reg >= 0x200 && reg < 0x600 ) { /* Fog table */
463 MMIO_WRITE( PVR2, reg, val );
470 case GUNPOS: /* Read only registers */
473 val &= 0x00000007; /* Do stuff? */
474 MMIO_WRITE( PVR2, reg, val );
476 case RENDER_START: /* Don't really care what value */
477 if( save_next_render_filename != NULL ) {
478 if( pvr2_render_save_scene(save_next_render_filename) == 0 ) {
479 INFO( "Saved scene to %s", save_next_render_filename);
481 g_free( save_next_render_filename );
482 save_next_render_filename = NULL;
485 render_buffer_t buffer = pvr2_next_render_buffer();
486 if( buffer != NULL ) {
487 pvr2_scene_render( buffer );
488 pvr2_finish_render_buffer( buffer );
490 asic_event( EVENT_PVR_RENDER_DONE );
492 case RENDER_POLYBASE:
493 MMIO_WRITE( PVR2, reg, val&0x00F00000 );
496 MMIO_WRITE( PVR2, reg, val&0x00010101 );
499 MMIO_WRITE( PVR2, reg, val&0x01FFFFFF );
502 MMIO_WRITE( PVR2, reg, val&0x00FFFF7F );
505 MMIO_WRITE( PVR2, reg, val&0x00FFFF0F );
508 MMIO_WRITE( PVR2, reg, val&0x000001FF );
512 MMIO_WRITE( PVR2, reg, val );
513 pvr2_update_raster_posn(sh4r.slice_cycle);
516 MMIO_WRITE( PVR2, reg, val&0x00FFFFFC );
517 pvr2_update_raster_posn(sh4r.slice_cycle);
520 MMIO_WRITE( PVR2, reg, val&0x3FFFFFFF );
524 MMIO_WRITE( PVR2, reg, val&0x01FFFFFC );
527 MMIO_WRITE( PVR2, reg, val&0x07FF07FF );
530 MMIO_WRITE( PVR2, reg, val&0x03FF03FF );
533 MMIO_WRITE( PVR2, reg, val&0x03FF33FF );
534 pvr2_state.irq_hpos_line = val & 0x03FF;
535 pvr2_state.irq_hpos_time_ns = 2000000*((val>>16)&0x03FF)/pvr2_state.dot_clock;
536 pvr2_state.irq_hpos_mode = (val >> 12) & 0x03;
537 switch( pvr2_state.irq_hpos_mode ) {
538 case 3: /* Reserved - treat as 0 */
539 case 0: /* Once per frame at specified line */
540 pvr2_state.irq_hpos_mode = HPOS_PER_FRAME;
542 case 2: /* Once per line - as per-line-count */
543 pvr2_state.irq_hpos_line = 1;
544 pvr2_state.irq_hpos_mode = 1;
545 case 1: /* Once per N lines */
546 pvr2_state.irq_hpos_line_count = pvr2_state.irq_hpos_line;
547 pvr2_state.irq_hpos_line = (pvr2_state.line_count >> 1) +
548 pvr2_state.irq_hpos_line_count;
549 while( pvr2_state.irq_hpos_line > (pvr2_state.total_lines>>1) ) {
550 pvr2_state.irq_hpos_line -= (pvr2_state.total_lines>>1);
552 pvr2_state.irq_hpos_mode = HPOS_PER_LINECOUNT;
554 pvr2_schedule_scanline_event( EVENT_HPOS, pvr2_state.irq_hpos_line, 0,
555 pvr2_state.irq_hpos_time_ns );
558 val = val & 0x03FF03FF;
559 pvr2_state.irq_vpos1 = (val >> 16);
560 pvr2_state.irq_vpos2 = val & 0x03FF;
561 pvr2_update_raster_posn(sh4r.slice_cycle);
562 pvr2_schedule_scanline_event( EVENT_SCANLINE1, pvr2_state.irq_vpos1, 0, 0 );
563 pvr2_schedule_scanline_event( EVENT_SCANLINE2, pvr2_state.irq_vpos2, 0, 0 );
564 MMIO_WRITE( PVR2, reg, val );
566 case RENDER_NEARCLIP:
567 MMIO_WRITE( PVR2, reg, val & 0x7FFFFFFF );
570 MMIO_WRITE( PVR2, reg, val&0x000001FF );
573 MMIO_WRITE( PVR2, reg, val&0x003FFFFF );
576 MMIO_WRITE( PVR2, reg, val&0x7FFFFFFF );
579 MMIO_WRITE( PVR2, reg, val&0xFFFFFFF0 );
582 MMIO_WRITE( PVR2, reg, val&0x1FFFFFFF );
585 MMIO_WRITE( PVR2, reg, val&0x00FFFFF9 );
588 MMIO_WRITE( PVR2, reg, val&0x000000FF );
591 MMIO_WRITE( PVR2, reg, val&0x003FFFFF );
594 MMIO_WRITE( PVR2, reg, val&0x1FFFFFFF );
596 case RENDER_FOGTBLCOL:
597 case RENDER_FOGVRTCOL:
598 MMIO_WRITE( PVR2, reg, val&0x00FFFFFF );
600 case RENDER_FOGCOEFF:
601 MMIO_WRITE( PVR2, reg, val&0x0000FFFF );
605 MMIO_WRITE( PVR2, reg, val );
608 MMIO_WRITE( PVR2, reg, val&0x00031F1F );
611 MMIO_WRITE( PVR2, reg, val&0x00000003 );
613 case RENDER_ALPHA_REF:
614 MMIO_WRITE( PVR2, reg, val&0x000000FF );
616 /********** CRTC registers *************/
619 MMIO_WRITE( PVR2, reg, val&0x03FF03FF );
622 val = val & 0x03FF03FF;
623 MMIO_WRITE( PVR2, reg, val );
624 pvr2_update_raster_posn(sh4r.slice_cycle);
625 pvr2_state.total_lines = (val >> 16) + 1;
626 pvr2_state.line_size = (val & 0x03FF) + 1;
627 pvr2_state.line_time_ns = 1000000 * pvr2_state.line_size / pvr2_state.dot_clock;
628 pvr2_state.retrace_end_line = 0x2A;
629 pvr2_state.retrace_start_line = pvr2_state.total_lines - 6;
630 pvr2_schedule_scanline_event( EVENT_SCANLINE1, pvr2_state.irq_vpos1, 0, 0 );
631 pvr2_schedule_scanline_event( EVENT_SCANLINE2, pvr2_state.irq_vpos2, 0, 0 );
632 pvr2_schedule_scanline_event( EVENT_HPOS, pvr2_state.irq_hpos_line, 0,
633 pvr2_state.irq_hpos_time_ns );
636 MMIO_WRITE( PVR2, reg, val&0x000003FF );
637 pvr2_state.interlaced = (val & 0x0010) ? TRUE : FALSE;
640 pvr2_state.vsync_lines = (val >> 8) & 0x0F;
641 pvr2_state.hsync_width_ns = ((val & 0x7F) + 1) * 2000000 / pvr2_state.dot_clock;
642 MMIO_WRITE( PVR2, reg, val&0xFFFFFF7F );
645 MMIO_WRITE( PVR2, reg, val&0x003F01FF );
649 pvr2_state.front_porch_ns = (val + 1) * 1000000 / pvr2_state.dot_clock;
650 MMIO_WRITE( PVR2, reg, val );
653 MMIO_WRITE( PVR2, reg, val&0x03FF03FF );
656 /*********** Tile accelerator registers ***********/
659 /* Readonly registers */
664 MMIO_WRITE( PVR2, reg, val&0x00FFFFE0 );
666 case RENDER_TILEBASE:
669 MMIO_WRITE( PVR2, reg, val&0x00FFFFFC );
672 MMIO_WRITE( PVR2, reg, val&0x000F003F );
675 MMIO_WRITE( PVR2, reg, val&0x00133333 );
678 if( val & 0x80000000 )
683 /**************** Scaler registers? ****************/
685 MMIO_WRITE( PVR2, reg, val&0x0007FFFF );
689 val = val & 0x00FFFFF8;
690 MMIO_WRITE( PVR2, reg, val );
691 pvr2_yuv_init( val );
694 MMIO_WRITE( PVR2, reg, val&0x01013F3F );
695 pvr2_yuv_set_config(val);
698 /**************** Unknowns ***************/
700 MMIO_WRITE( PVR2, reg, val&0x000007FF );
703 MMIO_WRITE( PVR2, reg, val&0x00000007 );
706 MMIO_WRITE( PVR2, reg, val&0x000FFF3F );
709 MMIO_WRITE( PVR2, reg, val&0x0000FFFF );
712 MMIO_WRITE( PVR2, reg, val&0x00000001 );
715 MMIO_WRITE( PVR2, reg, val&0x0300FFFF );
721 * Calculate the current read value of the syncstat register, using
722 * the current SH4 clock time as an offset from the last timeslice.
723 * The register reads (LSB to MSB) as:
724 * 0..9 Current scan line
725 * 10 Odd/even field (1 = odd, 0 = even)
726 * 11 Display active (including border and overscan)
727 * 12 Horizontal sync off
728 * 13 Vertical sync off
729 * Note this method is probably incorrect for anything other than straight
730 * interlaced PAL/NTSC, and needs further testing.
732 uint32_t pvr2_get_sync_status()
734 pvr2_update_raster_posn(sh4r.slice_cycle);
735 uint32_t result = pvr2_state.line_count;
737 if( pvr2_state.odd_even_field ) {
740 if( (pvr2_state.line_count & 0x01) == pvr2_state.odd_even_field ) {
741 if( pvr2_state.line_remainder > pvr2_state.hsync_width_ns ) {
742 result |= 0x1000; /* !HSYNC */
744 if( pvr2_state.line_count >= pvr2_state.vsync_lines ) {
745 if( pvr2_state.line_remainder > pvr2_state.front_porch_ns ) {
746 result |= 0x2800; /* Display active */
748 result |= 0x2000; /* Front porch */
752 if( pvr2_state.line_count >= pvr2_state.vsync_lines ) {
753 if( pvr2_state.line_remainder < (pvr2_state.line_time_ns - pvr2_state.back_porch_ns)) {
754 result |= 0x3800; /* Display active */
759 result |= 0x1000; /* Back porch */
766 * Schedule a "scanline" event. This actually goes off at
767 * 2 * line in even fields and 2 * line + 1 in odd fields.
768 * Otherwise this behaves as per pvr2_schedule_line_event().
769 * The raster position should be updated before calling this
771 * @param eventid Event to fire at the specified time
772 * @param line Line on which to fire the event (this is 2n/2n+1 for interlaced
774 * @param hpos_ns Nanoseconds into the line at which to fire.
776 static void pvr2_schedule_scanline_event( int eventid, int line, int minimum_lines, int hpos_ns )
778 uint32_t field = pvr2_state.odd_even_field;
779 if( line <= pvr2_state.line_count && pvr2_state.interlaced ) {
782 if( hpos_ns > pvr2_state.line_time_ns ) {
783 hpos_ns = pvr2_state.line_time_ns;
791 if( line < pvr2_state.total_lines ) {
794 if( line <= pvr2_state.line_count ) {
795 lines = (pvr2_state.total_lines - pvr2_state.line_count + line);
797 lines = (line - pvr2_state.line_count);
799 if( lines <= minimum_lines ) {
800 lines += pvr2_state.total_lines;
802 time = (lines * pvr2_state.line_time_ns) - pvr2_state.line_remainder + hpos_ns;
803 event_schedule( eventid, time );
805 event_cancel( eventid );
809 void pvr2_queue_gun_event( int xpos, int ypos )
811 pvr2_update_raster_posn(sh4r.slice_cycle);
812 pvr2_schedule_scanline_event( EVENT_GUNPOS, (ypos >> 1) + pvr2_state.vsync_lines, 0,
813 (1000000 * xpos / pvr2_state.dot_clock) + pvr2_state.hsync_width_ns );
816 MMIO_REGION_READ_FN( PVR2, reg )
820 return pvr2_get_sync_status();
822 return MMIO_READ( PVR2, reg );
826 MMIO_REGION_WRITE_FN( PVR2PAL, reg, val )
828 MMIO_WRITE( PVR2PAL, reg, val );
829 pvr2_state.palette_changed = TRUE;
832 void pvr2_check_palette_changed()
834 if( pvr2_state.palette_changed ) {
835 texcache_invalidate_palette();
836 pvr2_state.palette_changed = FALSE;
840 MMIO_REGION_READ_DEFFN( PVR2PAL );
842 void pvr2_set_base_address( uint32_t base )
844 mmio_region_PVR2_write( DISP_ADDR1, base );
850 int32_t mmio_region_PVR2TA_read( uint32_t reg )
855 void mmio_region_PVR2TA_write( uint32_t reg, uint32_t val )
857 pvr2_ta_write( (unsigned char *)&val, sizeof(uint32_t) );
860 render_buffer_t pvr2_create_render_buffer( sh4addr_t addr, int width, int height, GLuint tex_id )
862 if( display_driver != NULL && display_driver->create_render_buffer != NULL ) {
863 render_buffer_t buffer = display_driver->create_render_buffer(width,height,tex_id);
864 buffer->address = addr;
870 void pvr2_destroy_render_buffer( render_buffer_t buffer )
872 if( !buffer->flushed )
873 pvr2_render_buffer_copy_to_sh4( buffer );
874 display_driver->destroy_render_buffer( buffer );
877 void pvr2_finish_render_buffer( render_buffer_t buffer )
879 display_driver->finish_render( buffer );
883 * Find the render buffer corresponding to the requested output frame
884 * (does not consider texture renders).
885 * @return the render_buffer if found, or null if no such buffer.
887 * Note: Currently does not consider "partial matches", ie partial
888 * frame overlap - it probably needs to do this.
890 render_buffer_t pvr2_get_render_buffer( frame_buffer_t frame )
893 for( i=0; i<render_buffer_count; i++ ) {
894 if( render_buffers[i] != NULL && render_buffers[i]->address == frame->address ) {
895 return render_buffers[i];
902 * Allocate a render buffer with the requested parameters.
903 * The order of preference is:
904 * 1. An existing buffer with the same address. (not flushed unless the new
905 * size is smaller than the old one).
906 * 2. An existing buffer with the same size chosen by LRU order. Old buffer
907 * is flushed to vram.
908 * 3. A new buffer if one can be created.
909 * 4. The current display buff
910 * Note: The current display field(s) will never be overwritten except as a last
913 render_buffer_t pvr2_alloc_render_buffer( sh4addr_t render_addr, int width, int height )
916 render_buffer_t result = NULL;
918 /* Check existing buffers for an available buffer */
919 for( i=0; i<render_buffer_count; i++ ) {
920 if( render_buffers[i]->width == width && render_buffers[i]->height == height ) {
921 /* needs to be the right dimensions */
922 if( render_buffers[i]->address == render_addr ) {
923 if( displayed_render_buffer == render_buffers[i] ) {
924 /* Same address, but we can't use it because the
925 * display has it. Mark it as unaddressed for later.
927 render_buffers[i]->address = -1;
930 result = render_buffers[i];
933 } else if( render_buffers[i]->address == -1 && result == NULL &&
934 displayed_render_buffer != render_buffers[i] ) {
935 result = render_buffers[i];
938 } else if( render_buffers[i]->address == render_addr ) {
939 /* right address, wrong size - if it's larger, flush it, otherwise
941 if( render_buffers[i]->width * render_buffers[i]->height >
943 pvr2_render_buffer_copy_to_sh4( render_buffers[i] );
945 render_buffers[i]->address = -1;
949 /* Nothing available - make one */
950 if( result == NULL ) {
951 if( render_buffer_count == MAX_RENDER_BUFFERS ) {
952 /* maximum buffers reached - need to throw one away */
953 uint32_t field1_addr = MMIO_READ( PVR2, DISP_ADDR1 );
954 uint32_t field2_addr = MMIO_READ( PVR2, DISP_ADDR2 );
955 for( i=0; i<render_buffer_count; i++ ) {
956 if( render_buffers[i]->address != field1_addr &&
957 render_buffers[i]->address != field2_addr &&
958 render_buffers[i] != displayed_render_buffer ) {
959 /* Never throw away the current "front buffer(s)" */
960 result = render_buffers[i];
961 if( !result->flushed ) {
962 pvr2_render_buffer_copy_to_sh4( result );
964 if( result->width != width || result->height != height ) {
965 display_driver->destroy_render_buffer(render_buffers[i]);
966 result = display_driver->create_render_buffer(width,height,0);
967 render_buffers[i] = result;
973 result = display_driver->create_render_buffer(width,height,0);
974 if( result != NULL ) {
975 render_buffers[render_buffer_count++] = result;
980 if( result != NULL ) {
981 result->address = render_addr;
987 * Allocate a render buffer based on the current rendering settings
989 render_buffer_t pvr2_next_render_buffer()
991 render_buffer_t result = NULL;
992 uint32_t render_addr = MMIO_READ( PVR2, RENDER_ADDR1 );
993 uint32_t render_mode = MMIO_READ( PVR2, RENDER_MODE );
994 uint32_t render_scale = MMIO_READ( PVR2, RENDER_SCALER );
995 uint32_t render_stride = MMIO_READ( PVR2, RENDER_SIZE ) << 3;
997 int width = pvr2_scene_buffer_width();
998 int height = pvr2_scene_buffer_height();
999 int colour_format = render_colour_formats[render_mode&0x07];
1001 if( render_addr & 0x01000000 ) { /* vram64 */
1002 render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
1003 result = texcache_get_render_buffer( render_addr, colour_format, width, height );
1004 } else { /* vram32 */
1005 render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
1006 result = pvr2_alloc_render_buffer( render_addr, width, height );
1009 /* Setup the buffer */
1010 if( result != NULL ) {
1011 result->rowstride = render_stride;
1012 result->colour_format = colour_format;
1013 result->scale = render_scale;
1014 result->size = width * height * colour_formats[colour_format].bpp;
1015 result->flushed = FALSE;
1016 result->inverted = TRUE; // render buffers are inverted normally
1021 static render_buffer_t pvr2_frame_buffer_to_render_buffer( frame_buffer_t frame )
1023 render_buffer_t result = pvr2_alloc_render_buffer( frame->address, frame->width, frame->height );
1024 if( result != NULL ) {
1025 int bpp = colour_formats[frame->colour_format].bpp;
1026 result->rowstride = frame->rowstride;
1027 result->colour_format = frame->colour_format;
1028 result->scale = 0x400;
1029 result->size = frame->width * frame->height * bpp;
1030 result->flushed = TRUE;
1031 result->inverted = frame->inverted;
1032 display_driver->load_frame_buffer( frame, result );
1039 * Invalidate any caching on the supplied address. Specifically, if it falls
1040 * within any of the render buffers, flush the buffer back to PVR2 ram.
1042 gboolean pvr2_render_buffer_invalidate( sh4addr_t address, gboolean isWrite )
1045 address = address & 0x1FFFFFFF;
1046 for( i=0; i<render_buffer_count; i++ ) {
1047 uint32_t bufaddr = render_buffers[i]->address;
1048 if( bufaddr != -1 && bufaddr <= address &&
1049 (bufaddr + render_buffers[i]->size) > address ) {
1050 if( !render_buffers[i]->flushed ) {
1051 pvr2_render_buffer_copy_to_sh4( render_buffers[i] );
1054 render_buffers[i]->address = -1; /* Invalid */
1056 return TRUE; /* should never have overlapping buffers */
.