git.sesse.net Git - pistorm/blob - platforms/amiga/rtg/rtg.c

   1 #include <stdint.h>
   2 #include <endian.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <time.h>
   7 #include "rtg.h"
   8 #include "config_file/config_file.h"
   9
  10 uint8_t rtg_u8[4];
  11 uint16_t rtg_x[8], rtg_y[8];
  12 uint16_t rtg_user[8];
  13 uint16_t rtg_format;
  14 uint32_t rtg_address[8];
  15 uint32_t rtg_address_adj[8];
  16 uint32_t rtg_rgb[8];
  17
  18 static uint8_t display_enabled = 0xFF;
  19
  20 uint16_t rtg_display_width, rtg_display_height;
  21 uint16_t rtg_display_format;
  22 uint16_t rtg_pitch, rtg_total_rows;
  23 uint16_t rtg_offset_x, rtg_offset_y;
  24
  25 uint8_t *rtg_mem; // FIXME
  26
  27 uint32_t framebuffer_addr = 0;
  28 uint32_t framebuffer_addr_adj = 0;
  29
  30 static void handle_rtg_command(uint32_t cmd);
  31 //static struct timespec f1, f2;
  32
  33 uint8_t realtime_graphics_debug = 0;
  34 extern int cpu_emulation_running;
  35 /*
  36 static const char *op_type_names[OP_TYPE_NUM] = {
  37     "BYTE",
  38     "WORD",
  39     "LONGWORD",
  40     "MEM",
  41 };
  42
  43 static const char *rtg_format_names[RTGFMT_NUM] = {
  44     "8BPP CLUT",
  45     "16BPP RGB (565)",
  46     "32BPP RGB (RGBA)",
  47     "15BPP RGB (555)",
  48 };
  49 */
  50 int init_rtg_data() {
  51     rtg_mem = calloc(1, 40 * SIZE_MEGA);
  52     if (!rtg_mem) {
  53         printf("Failed to allocate RTG video memory.\n");
  54         return 0;
  55     }
  56
  57     return 1;
  58 }
  59
  60 //extern uint8_t busy, rtg_on;
  61 //void rtg_update_screen();
  62
  63 unsigned int rtg_read(uint32_t address, uint8_t mode) {
  64     //printf("%s read from RTG: %.8X\n", op_type_names[mode], address);
  65     if (address == RTG_COMMAND) {
  66         return 0xFFCF;
  67     }
  68     if (address >= PIGFX_REG_SIZE) {
  69         if (rtg_mem && (address - PIGFX_REG_SIZE) < PIGFX_UPPER) {
  70             switch (mode) {
  71                 case OP_TYPE_BYTE:
  72                     return (rtg_mem[address - PIGFX_REG_SIZE]);
  73                     break;
  74                 case OP_TYPE_WORD:
  75                     return be16toh(*(( uint16_t *) (&rtg_mem[address - PIGFX_REG_SIZE])));
  76                     break;
  77                 case OP_TYPE_LONGWORD:
  78                     return be32toh(*(( uint32_t *) (&rtg_mem[address - PIGFX_REG_SIZE])));
  79                     break;
  80                 default:
  81                     return 0;
  82             }
  83         }
  84     }
  85
  86     return 0;
  87 }
  88
  89 struct timespec diff(struct timespec start, struct timespec end)
  90 {
  91     struct timespec temp;
  92     if ((end.tv_nsec-start.tv_nsec)<0) {
  93         temp.tv_sec = end.tv_sec-start.tv_sec-1;
  94         temp.tv_nsec = 1000000000+end.tv_nsec-start.tv_nsec;
  95     } else {
  96         temp.tv_sec = end.tv_sec-start.tv_sec;
  97         temp.tv_nsec = end.tv_nsec-start.tv_nsec;
  98     }
  99     return temp;
 100 }
 101
 102 #define CHKREG(a, b) case a: b = value; break;
 103
 104 void rtg_write(uint32_t address, uint32_t value, uint8_t mode) {
 105     //printf("%s write to RTG: %.8X (%.8X)\n", op_type_names[mode], address, value);
 106     if (address >= PIGFX_REG_SIZE) {
 107         /*if ((address - PIGFX_REG_SIZE) < framebuffer_addr) {// || (address - PIGFX_REG_SIZE) > framebuffer_addr + ((rtg_display_width << rtg_display_format) * rtg_display_height)) {
 108             printf("Write to RTG memory outside frame buffer %.8X (%.8X).\n", (address - PIGFX_REG_SIZE), framebuffer_addr);
 109         }*/
 110         if (rtg_mem && (address - PIGFX_REG_SIZE) < PIGFX_UPPER) {
 111             switch (mode) {
 112                 case OP_TYPE_BYTE:
 113                     rtg_mem[address - PIGFX_REG_SIZE] = value;
 114                     break;
 115                 case OP_TYPE_WORD:
 116                     *(( uint16_t *) (&rtg_mem[address - PIGFX_REG_SIZE])) = htobe16(value);
 117                     break;
 118                 case OP_TYPE_LONGWORD:
 119                     *(( uint32_t *) (&rtg_mem[address - PIGFX_REG_SIZE])) = htobe32(value);
 120                     break;
 121                 default:
 122                     return;
 123             }
 124         }
 125     }
 126     else {
 127         switch (mode) {
 128             case OP_TYPE_BYTE:
 129                 switch (address) {
 130                     CHKREG(RTG_U81, rtg_u8[0]);
 131                     CHKREG(RTG_U82, rtg_u8[1]);
 132                     CHKREG(RTG_U83, rtg_u8[2]);
 133                     CHKREG(RTG_U84, rtg_u8[3]);
 134                 }
 135                 break;
 136             case OP_TYPE_WORD:
 137                 switch (address) {
 138                     CHKREG(RTG_X1, rtg_x[0]);
 139                     CHKREG(RTG_X2, rtg_x[1]);
 140                     CHKREG(RTG_X3, rtg_x[2]);
 141                     CHKREG(RTG_X4, rtg_x[3]);
 142                     CHKREG(RTG_X5, rtg_x[4]);
 143                     CHKREG(RTG_Y1, rtg_y[0]);
 144                     CHKREG(RTG_Y2, rtg_y[1]);
 145                     CHKREG(RTG_Y3, rtg_y[2]);
 146                     CHKREG(RTG_Y4, rtg_y[3]);
 147                     CHKREG(RTG_Y5, rtg_y[4]);
 148                     CHKREG(RTG_U1, rtg_user[0]);
 149                     CHKREG(RTG_U2, rtg_user[1]);
 150                     CHKREG(RTG_FORMAT, rtg_format);
 151                     case RTG_COMMAND:
 152                         handle_rtg_command(value);
 153                         break;
 154                 }
 155                 break;
 156             case OP_TYPE_LONGWORD:
 157                 switch (address) {
 158                     case RTG_ADDR1:
 159                         rtg_address[0] = value;
 160                         rtg_address_adj[0] = value - (PIGFX_RTG_BASE + PIGFX_REG_SIZE);
 161                         break;
 162                     case RTG_ADDR2:
 163                         rtg_address[1] = value;
 164                         rtg_address_adj[1] = value - (PIGFX_RTG_BASE + PIGFX_REG_SIZE);
 165                         break;
 166                     CHKREG(RTG_ADDR3, rtg_address[2]);
 167                     CHKREG(RTG_ADDR4, rtg_address[3]);
 168                     CHKREG(RTG_RGB1, rtg_rgb[0]);
 169                     CHKREG(RTG_RGB2, rtg_rgb[1]);
 170                 }
 171                 break;
 172         }
 173     }
 174
 175     return;
 176 }
 177
 178 #define gdebug(a) if (realtime_graphics_debug) { printf(a); m68k_end_timeslice(); cpu_emulation_running = 0; }
 179
 180 static void handle_rtg_command(uint32_t cmd) {
 181     //printf("Handling RTG command %d (%.8X)\n", cmd, cmd);
 182     switch (cmd) {
 183         case RTGCMD_SETGC:
 184             rtg_display_format = rtg_format;
 185             rtg_display_width = rtg_x[0];
 186             rtg_display_height = rtg_y[0];
 187             if (rtg_u8[0]) {
 188                 //rtg_pitch = rtg_display_width << rtg_format;
 189                 framebuffer_addr_adj = framebuffer_addr + (rtg_offset_x << rtg_display_format) + (rtg_offset_y * rtg_pitch);
 190                 rtg_total_rows = rtg_y[1];
 191             }
 192             else {
 193                 //rtg_pitch = rtg_display_width << rtg_format;
 194                 framebuffer_addr_adj = framebuffer_addr + (rtg_offset_x << rtg_display_format) + (rtg_offset_y * rtg_pitch);
 195                 rtg_total_rows = rtg_y[1];
 196             }
 197             //printf("Set RTG mode:\n");
 198             //printf("%dx%d pixels\n", rtg_display_width, rtg_display_height);
 199             //printf("Pixel format: %s\n", rtg_format_names[rtg_display_format]);
 200             break;
 201         case RTGCMD_SETPAN:
 202             //printf("Command: SetPan.\n");
 203             rtg_offset_x = rtg_x[1];
 204             rtg_offset_y = rtg_y[1];
 205             rtg_pitch = (rtg_x[0] << rtg_display_format);
 206             framebuffer_addr = rtg_address[0] - (PIGFX_RTG_BASE + PIGFX_REG_SIZE);
 207             framebuffer_addr_adj = framebuffer_addr + (rtg_offset_x << rtg_display_format) + (rtg_offset_y * rtg_pitch);
 208             //printf("Set panning to $%.8X (%.8X)\n", framebuffer_addr, rtg_address[0]);
 209             //printf("(Panned: $%.8X)\n", framebuffer_addr_adj);
 210             //printf("Offset X/Y: %d/%d\n", rtg_offset_x, rtg_offset_y);
 211             printf("Pitch: %d (%d bytes)\n", rtg_x[0], rtg_pitch);
 212             break;
 213         case RTGCMD_SETCLUT: {
 214             //printf("Command: SetCLUT.\n");
 215             //printf("Set palette entry %d to %d, %d, %d\n", rtg_u8[0], rtg_u8[1], rtg_u8[2], rtg_u8[3]);
 216             //printf("Set palette entry %d to 32-bit palette color: %.8X\n", rtg_u8[0], rtg_rgb[0]);
 217             rtg_set_clut_entry(rtg_u8[0], rtg_rgb[0]);
 218             break;
 219         }
 220         case RTGCMD_SETDISPLAY:
 221             //printf("RTG SetDisplay %s\n", (rtg_u8[1]) ? "enabled" : "disabled");
 222             // I remeber wrongs.
 223             //printf("Command: SetDisplay.\n");
 224             break;
 225         case RTGCMD_ENABLE:
 226         case RTGCMD_SETSWITCH:
 227             //printf("RTG SetSwitch %s\n", ((rtg_x[0]) & 0x01) ? "enabled" : "disabled");
 228             //printf("LAL: %.4X\n", rtg_x[0]);
 229             if (display_enabled != ((rtg_x[0]) & 0x01)) {
 230                 display_enabled = ((rtg_x[0]) & 0x01);
 231                 if (display_enabled) {
 232                     rtg_init_display();
 233                 }
 234                 else
 235                     rtg_shutdown_display();
 236             }
 237             break;
 238         case RTGCMD_FILLRECT:
 239             if (rtg_u8[0] == 0xFF || rtg_format != RTGFMT_8BIT) {
 240                 rtg_fillrect_solid(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_rgb[0], rtg_x[2], rtg_format);
 241                 gdebug("FillRect Solid\n");
 242             }
 243             else {
 244                 rtg_fillrect(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_rgb[0], rtg_x[2], rtg_format, rtg_u8[0]);
 245                 gdebug("FillRect Masked\n");
 246             }
 247             break;
 248         case RTGCMD_INVERTRECT:
 249             rtg_invertrect(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_format, rtg_u8[0]);
 250             gdebug("InvertRect\n");
 251             break;
 252         case RTGCMD_BLITRECT:
 253             if (rtg_u8[0] == 0xFF || rtg_format != RTGFMT_8BIT) {
 254                 rtg_blitrect_solid(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_y[2], rtg_x[3], rtg_format);
 255                 gdebug("BlitRect Solid\n");
 256             }
 257             else {
 258                 rtg_blitrect(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_y[2], rtg_x[3], rtg_format, rtg_u8[0]);
 259                 gdebug("BlitRect Masked\n");
 260             }
 261             break;
 262         case RTGCMD_BLITRECT_NOMASK_COMPLETE:
 263             rtg_blitrect_nomask_complete(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_y[2], rtg_x[3], rtg_x[4], rtg_address[0], rtg_address[1], rtg_format, rtg_u8[0]);
 264             gdebug("BlitRectNoMaskComplete\n");
 265             break;
 266         case RTGCMD_BLITPATTERN:
 267             rtg_blitpattern(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_address[0], rtg_rgb[0], rtg_rgb[1], rtg_x[3], rtg_format, rtg_x[2], rtg_y[2], rtg_u8[0], rtg_u8[1], rtg_u8[2]);
 268             gdebug("BlitPattern\n");
 269             return;
 270         case RTGCMD_BLITTEMPLATE:
 271             rtg_blittemplate(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_address[0], rtg_rgb[0], rtg_rgb[1], rtg_x[3], rtg_x[4], rtg_format, rtg_x[2], rtg_u8[0], rtg_u8[1]);
 272             gdebug("BlitTemplate\n");
 273             break;
 274         case RTGCMD_DRAWLINE:
 275             if (rtg_u8[0] == 0xFF && rtg_y[2] == 0xFFFF)
 276                 rtg_drawline_solid(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_rgb[0], rtg_x[3], rtg_format);
 277             else
 278                 rtg_drawline(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_y[2], rtg_x[4], rtg_rgb[0], rtg_rgb[1],  rtg_x[3], rtg_format, rtg_u8[0], rtg_u8[1]);
 279             gdebug("DrawLine\n");
 280             break;
 281         case RTGCMD_P2C:
 282             rtg_p2c(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_y[2], rtg_u8[1], rtg_u8[2], rtg_u8[0], (rtg_user[0] >> 0x8), rtg_x[4], (uint8_t *)&rtg_mem[rtg_address_adj[1]]);
 283             //rtg_p2c_broken(rtg_x[0], rtg_y[0], rtg_x[1], rtg_y[1], rtg_x[2], rtg_y[2], rtg_x[3], rtg_u8[0], rtg_u8[1], rtg_u8[2], rtg_user[0]);
 284             gdebug("Planar2Chunky\n");
 285             break;
 286         case RTGCMD_P2D:
 287             break;
 288     }
 289 }