nkeynes@297: /**
nkeynes@561:  * $Id$
nkeynes@297:  *
nkeynes@297:  * Scene-save loader support. This is the other side of rendsave.c
nkeynes@297:  *
nkeynes@297:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@297:  *
nkeynes@297:  * This program is free software; you can redistribute it and/or modify
nkeynes@297:  * it under the terms of the GNU General Public License as published by
nkeynes@297:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@297:  * (at your option) any later version.
nkeynes@297:  *
nkeynes@297:  * This program is distributed in the hope that it will be useful,
nkeynes@297:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@297:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@297:  * GNU General Public License for more details.
nkeynes@297:  */
nkeynes@297: 
nkeynes@297: #include <stdio.h>
nkeynes@297: #include <errno.h>
nkeynes@297: #include "lib.h"
nkeynes@297: #include "asic.h"
nkeynes@297: #include "pvr.h"
nkeynes@297: 
nkeynes@297: char *scene_magic = "%!-lxDream!Scene";
nkeynes@297: 
nkeynes@297: #define PVR2_BASE 0xA05F8000
nkeynes@297: 
nkeynes@297: #define COPYREG(x) long_write( (PVR2_BASE+x), scene_header.pvr2_regs[(x>>2)] )
nkeynes@297: 
nkeynes@297: int pvr2_render_load_scene( FILE *f )
nkeynes@297: {
nkeynes@297:     struct {
nkeynes@297: 	char magic[16];
nkeynes@297: 	uint32_t version;
nkeynes@297: 	uint32_t timestamp;
nkeynes@297: 	uint32_t frame_count;
nkeynes@297: 	uint32_t pvr2_regs[0x400];
nkeynes@297: 	uint32_t palette[0x400];
nkeynes@297:     } scene_header;
nkeynes@297:     uint32_t start = 0xFFFFFFFF, length;
nkeynes@297:     
nkeynes@297:     if( fread( &scene_header, sizeof(scene_header), 1, f ) != 1 ) {
nkeynes@297: 	fprintf( stderr, "Failed to read scene header (%s)\n", strerror(errno) );
nkeynes@297: 	return -1;
nkeynes@297:     }
nkeynes@297:     if( memcmp( scene_magic, scene_header.magic, 16 ) != 0 ) {
nkeynes@297: 	fprintf( stderr, "Failed to load scene data: Header not found\n" );
nkeynes@297: 	fclose(f);
nkeynes@297: 	return -1;
nkeynes@297:     }
nkeynes@297: 
nkeynes@297:     fprintf( stdout, "Loaded header\n" );
nkeynes@297:     /* Load the VRAM sections */
nkeynes@297:     while(1) {
nkeynes@297: 	fread( &start, sizeof(uint32_t), 1, f );
nkeynes@297: 	if( start == 0xFFFFFFFF ) { /* EOF */
nkeynes@297: 	    break;
nkeynes@297: 	}
nkeynes@297: 	fread( &length, sizeof(uint32_t), 1, f );
nkeynes@297: 	int read = fread( (char *)(0xA5000000 + start), 1, length, f );
nkeynes@297: 	if( read != length ) {
nkeynes@297: 	    fprintf( stderr, "Failed to load %d bytes at %08X (Got %d - %s)\n",
nkeynes@297: 		     length, start, read, strerror(errno) );
nkeynes@297: 	    fclose(f);
nkeynes@297: 	    return -2;
nkeynes@297: 	} else {
nkeynes@297: 	    fprintf( stdout, "Loaded %d bytes at %08X\n", length, start );
nkeynes@297: 	}
nkeynes@297:     }
nkeynes@297: 
nkeynes@297:     /* Copy the fog table */
nkeynes@297:     memcpy( (char *)0xA05F8200, ((char *)scene_header.pvr2_regs) + 0x200, 0x200 );
nkeynes@297:     /* Copy the palette data */
nkeynes@297:     memcpy( (char *)0xA05F9000, scene_header.palette, 4096 );
nkeynes@297:     /* And now the other registers */
nkeynes@297:     COPYREG(0x018);
nkeynes@297:     COPYREG(0x020);
nkeynes@297:     COPYREG(0x02C);
nkeynes@297:     COPYREG(0x030);
nkeynes@297:     COPYREG(0x044);
nkeynes@297:     COPYREG(0x048);
nkeynes@297:     COPYREG(0x04C);
nkeynes@297:     COPYREG(0x05C);
nkeynes@297:     COPYREG(0x060);
nkeynes@297:     COPYREG(0x064);
nkeynes@297:     COPYREG(0x068);
nkeynes@297:     COPYREG(0x06C);
nkeynes@297:     COPYREG(0x074);
nkeynes@297:     COPYREG(0x078);
nkeynes@297:     COPYREG(0x07C);
nkeynes@297:     COPYREG(0x080);
nkeynes@297:     COPYREG(0x084);
nkeynes@297:     COPYREG(0x088);
nkeynes@297:     COPYREG(0x08C);
nkeynes@297:     COPYREG(0x098);
nkeynes@297:     COPYREG(0x0B0);
nkeynes@297:     COPYREG(0x0B4);
nkeynes@297:     COPYREG(0x0B8);
nkeynes@297:     COPYREG(0x0BC);
nkeynes@297:     COPYREG(0x0C0);
nkeynes@297:     COPYREG(0x0E4);
nkeynes@297:     COPYREG(0x0F4);
nkeynes@297:     COPYREG(0x108);
nkeynes@297:     COPYREG(0x110);
nkeynes@297:     COPYREG(0x114);
nkeynes@297:     COPYREG(0x118);    
nkeynes@297:     fprintf( stdout, "Load complete\n" );
nkeynes@297:     fclose(f);
nkeynes@297: }
nkeynes@297: 
nkeynes@297: 
nkeynes@297: void pvr2_render_loaded_scene()
nkeynes@297: {
nkeynes@297:     asic_clear();
nkeynes@297:     long_write( (PVR2_BASE+0x14), 0xFFFFFFFF );
nkeynes@297:     asic_wait( EVENT_PVR_RENDER_DONE );
nkeynes@297:     asic_clear();
nkeynes@297:     asic_wait( EVENT_RETRACE );
nkeynes@297:     uint32_t addr = long_read( (PVR2_BASE+0x060) );
nkeynes@297:     uint32_t mod = long_read( (PVR2_BASE+0x04C) );
nkeynes@297:     long_write( (PVR2_BASE+0x050), addr);
nkeynes@297:     long_write( (PVR2_BASE+0x054), addr + (mod<<3) );
nkeynes@297: }
nkeynes@297: 
nkeynes@297: 
nkeynes@297: int main()
nkeynes@297: {
nkeynes@297:     pvr_init();
nkeynes@297:     pvr2_render_load_scene(stdin);
nkeynes@297:     pvr2_render_loaded_scene();
nkeynes@297:     asic_clear();
nkeynes@297:     asic_wait(EVENT_RETRACE);
nkeynes@297:     asic_clear();
nkeynes@297:     asic_wait(EVENT_RETRACE);
nkeynes@297:     asic_clear();
nkeynes@297:     asic_wait(EVENT_RETRACE);
nkeynes@297: }