1 #include <hw/cpu/cpu.h>
2 #include <hw/dos/dos.h>
3 #include <hw/vga/vga.h>
4 #include <hw/vga/vrl.h>
6 #include "src/tesuto.h"
8 #define FILENAME_1 "data/aconita.vrl"
9 #define FILENAME_2 "data/aconita.pal"
11 static unsigned char palette[768];
12 global_game_variables_t gvar;
14 int main(int argc,char **argv) {
15 struct vrl1_vgax_header *vrl_header;
16 vrl1_vgax_offset_t *vrl_lineoffs;
17 unsigned char *buffer;
20 char *bakapee1,*bakapee2;
23 bakapee2=malloc(1024);
26 fprintf(stderr,"drawvrl <VRL file> <palette file>\n");
27 bakapee1 = FILENAME_1;//"data/aconita.vrl";
28 bakapee2 = FILENAME_2;//"data/aconita.pal";
31 if(argv[1]) bakapee1 = argv[1];
32 if(argv[2]) bakapee2 = argv[2];
35 fd = open(bakapee1,O_RDONLY|O_BINARY);
37 fprintf(stderr,"Unable to open '%s'\n", bakapee1);
41 unsigned long sz = lseek(fd,0,SEEK_END);
42 if (sz < sizeof(*vrl_header)) return 1;
43 if (sz >= 65535UL) return 1;
45 bufsz = (unsigned int)sz;
46 buffer = malloc(bufsz);
47 if (buffer == NULL) return 1;
50 if ((unsigned int)read(fd,buffer,bufsz) < bufsz) return 1;
52 vrl_header = (struct vrl1_vgax_header*)buffer;
53 if (memcmp(vrl_header->vrl_sig,"VRL1",4) || memcmp(vrl_header->fmt_sig,"VGAX",4)) return 1;
54 if (vrl_header->width == 0 || vrl_header->height == 0) return 1;
60 printf("VGA probe failed\n");
64 // update_state_from_vga();
65 // vga_enable_256color_modex(); // VGA mode X
66 // gvar.video.page[0].width = 320; // VGA lib currently does not update this
67 // gvar.video.page[0].height = 240; // VGA lib currently does not update this
69 // //#if 1 // 320x240 test mode: this is how Project 16 is using our code, enable for test case
71 // struct vga_mode_params cm;
73 // vga_read_crtc_mode(&cm);
75 // // 320x240 mode 60Hz
76 // cm.vertical_total = 525;
77 // cm.vertical_start_retrace = 0x1EA;
78 // cm.vertical_end_retrace = 0x1EC;
79 // cm.vertical_display_end = 480;
80 // cm.vertical_blank_start = 489;
81 // cm.vertical_blank_end = 517;
83 // vga_write_crtc_mode(&cm,0);
85 // gvar.video.page[0].height = 240; // VGA lib currently does not update this
87 VGAmodeX(1, 1, &gvar);
89 /* load color palette */
90 fd = open(bakapee2,O_RDONLY|O_BINARY);
98 for (i=0;i < 256;i++) vga_palette_write(palette[(i*3)+0]>>2,palette[(i*3)+1]>>2,palette[(i*3)+2]>>2);
101 /* preprocess the sprite to generate line offsets */
102 vrl_lineoffs = vrl1_vgax_genlineoffsets(vrl_header,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header));
103 if (vrl_lineoffs == NULL) return 1;
105 /* setup camera and screen~ */
106 modexHiganbanaPageSetup(&gvar.video);
107 gvar.video.page[1].dx=gvar.video.page[0].dx=16;
108 gvar.video.page[1].dy=gvar.video.page[0].dy=16;
109 modexShowPage(&(gvar.video.page[0]));
111 //4 this dose the screen
115 /* fill screen with a distinctive pattern */
116 for (i=0;i < gvar.video.page[0].width;i++) {
118 vga_write_sequencer(0x02/*map mask*/,1 << (i&3));
119 for (j=0;j < gvar.video.page[0].height;j++,o += gvar.video.page[0].stridew)
120 vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!
124 //draw_vrl1_vgax_modex(0/*x-rx*/,0/*y-ry*/,vrl_header,vrl_lineoffs,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header));
126 /* make distinctive pattern offscreen, render sprite, copy onscreen.
127 * this time, we render the distinctive pattern to another offscreen location and just copy.
128 * note this version is much faster too! */
130 const unsigned int offscreen_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height);
131 const unsigned int pattern_ofs = 0x10000UL - (gvar.video.page[0].stridew * gvar.video.page[0].height);
132 unsigned int i,j,o,o2;
134 unsigned int overdraw = 1; // how many pixels to "overdraw" so that moving sprites with edge pixels don't leave streaks.
135 // if the sprite's edge pixels are clear anyway, you can set this to 0.
139 //4 this dose the sprite? wwww
140 /* fill pattern offset with a distinctive pattern */
141 for (i=0;i < gvar.video.page[0].width;i++) {
142 o = (i >> 2) + pattern_ofs;
143 vga_write_sequencer(0x02/*map mask*/,1 << (i&3));
144 for (j=0;j < gvar.video.page[0].height;j++,o += gvar.video.page[0].stridew)
145 vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!
148 /* starting coords. note: this technique is limited to x coordinates of multiple of 4 */
153 omemptr = vga_state.vga_graphics_ram; // save original mem ptr
155 /* stop animating if the user hits ENTER */
157 if (getch() == 13) break;
160 /* render box bounds. y does not need modification, but x and width must be multiple of 4 */
161 if (x >= overdraw) rx = (x - overdraw) & (~3);
162 else rx = -(gvar.video.page[0].dx);
163 if (y >= overdraw) ry = (y - overdraw);
164 else ry = -(gvar.video.page[0].dy);
165 h = vrl_header->height + overdraw + y - ry;
166 w = (x + vrl_header->width + (overdraw*2) + 3/*round up*/ - rx) & (~3);
167 if ((rx+w) > gvar.video.page[0].width) w = gvar.video.page[0].width-rx;
168 if ((ry+h) > gvar.video.page[0].height) h = gvar.video.page[0].height-ry;
170 /* block copy pattern to where we will draw the sprite */
171 vga_setup_wm1_block_copy();
173 o = pattern_ofs + (ry * gvar.video.page[0].stridew) + (rx >> 2); // source offscreen
174 for (i=0;i < h;i++,o += gvar.video.page[0].stridew,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2);
175 /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */
176 vga_restore_rm0wm0();
178 /* replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0) */
179 vga_state.vga_draw_stride_limit = (gvar.video.page[0].width + 3/*round up*/ - x) >> 2;
180 vga_state.vga_draw_stride = w >> 2;
181 vga_state.vga_graphics_ram = omemptr + offscreen_ofs;
183 /* then the sprite. note modding ram ptr means we just draw to (x&3,0) */
184 draw_vrl1_vgax_modex(x-rx,y-ry,vrl_header,vrl_lineoffs,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header));
187 vga_state.vga_graphics_ram = omemptr;
189 /* block copy to visible RAM from offscreen */
190 vga_setup_wm1_block_copy();
191 o = offscreen_ofs; // source offscreen
192 o2 = (ry * gvar.video.page[0].stridew) + (rx >> 2); // dest visible (original stride)
193 for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += gvar.video.page[0].stridew) vga_wm1_mem_block_copy(o2,o,w >> 2);
194 /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */
195 vga_restore_rm0wm0();
198 vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew;
203 if (x >= (gvar.video.page[0].width - 1) || x == 0)
205 if (y >= (gvar.video.page[0].height - 1) || y == 0)
210 modexShowPage(&(gvar.video.page[1]));
212 /* another handy "demo" effect using VGA write mode 1.
213 * we can take what's on screen and vertically squash it like an old analog TV set turning off. */
215 unsigned int blank_line_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height * 2);
216 unsigned int copy_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height);
217 unsigned int display_ofs = 0x0000;
218 unsigned int i,y,soh,doh,dstart;
219 unsigned int dh_blankfill = 8;
220 unsigned int dh_step = 8;
221 uint32_t sh,dh,yf,ystep;
223 /* copy active display (0) to offscreen buffer (0x4000) */
224 vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew;
225 vga_setup_wm1_block_copy();
226 vga_wm1_mem_block_copy(copy_ofs,display_ofs,gvar.video.page[0].stridew * gvar.video.page[0].height);
227 vga_restore_rm0wm0();
229 /* need a blank line as well */
230 for (i=0;i < gvar.video.page[0].stridew;i++) vga_state.vga_graphics_ram[i+blank_line_ofs] = 0;
232 sh = dh = gvar.video.page[0].height;
233 while (dh >= dh_step) {
234 /* stop animating if the user hits ENTER */
236 if (getch() == 13) break;
239 /* wait for vsync end */
240 vga_wait_for_vsync_end();
242 /* what scalefactor to use for stretching? */
243 ystep = (0x10000UL * sh) / dh;
244 dstart = (gvar.video.page[0].height - dh) / 2; // center the squash effect on screen, otherwise it would squash to top of screen
250 /* for performance, keep VGA in write mode 1 the entire render */
251 vga_setup_wm1_block_copy();
254 if (dstart >= dh_blankfill) y = dstart - dh_blankfill;
256 doh = gvar.video.page[0].stridew * y;
259 vga_wm1_mem_block_copy(doh,blank_line_ofs,gvar.video.page[0].stridew);
260 doh += gvar.video.page[0].stridew;
265 while (y < (dh+dstart)) {
266 soh = copy_ofs + ((yf >> 16UL) * gvar.video.page[0].stridew);
267 vga_wm1_mem_block_copy(doh,soh,gvar.video.page[0].stridew);
268 doh += gvar.video.page[0].stridew;
274 while (y < gvar.video.page[0].height && y < (dh+dstart+dh_blankfill)) {
275 vga_wm1_mem_block_copy(doh,blank_line_ofs,gvar.video.page[0].stridew);
276 doh += gvar.video.page[0].stridew;
281 vga_restore_rm0wm0();
284 vga_wait_for_vsync();
288 if (dh < 40) dh_step = 1;
292 VGAmodeX(0, 1, &gvar);