843 lines
31 KiB
C
843 lines
31 KiB
C
#include "gb.h"
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#include "random.h"
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#include <math.h>
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#include <assert.h>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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#define INTRO_ANIMATION_LENGTH 200
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enum {
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PAL01 = 0x00,
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PAL23 = 0x01,
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PAL03 = 0x02,
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PAL12 = 0x03,
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ATTR_BLK = 0x04,
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ATTR_LIN = 0x05,
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ATTR_DIV = 0x06,
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PAL_SET = 0x0A,
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PAL_TRN = 0x0B,
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DATA_SND = 0x0F,
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MLT_REQ = 0x11,
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CHR_TRN = 0x13,
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PCT_TRN = 0x14,
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ATTR_TRN = 0x15,
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ATTR_SET = 0x16,
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MASK_EN = 0x17,
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};
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typedef enum {
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MASK_DISABLED,
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MASK_FREEZE,
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MASK_BLACK,
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MASK_COLOR_0,
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} mask_mode_t;
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typedef enum {
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TRANSFER_LOW_TILES,
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TRANSFER_HIGH_TILES,
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TRANSFER_BORDER_DATA,
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TRANSFER_PALETTES,
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TRANSFER_ATTRIBUTES,
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} transfer_dest_t;
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#define SGB_PACKET_SIZE 16
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static inline void pal_command(GB_gameboy_t *gb, unsigned first, unsigned second)
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{
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gb->sgb->effective_palettes[0] = gb->sgb->effective_palettes[4] =
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gb->sgb->effective_palettes[8] = gb->sgb->effective_palettes[12] =
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gb->sgb->command[1] | (gb->sgb->command[2] << 8);
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for (unsigned i = 0; i < 3; i++) {
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gb->sgb->effective_palettes[first * 4 + i + 1] = gb->sgb->command[3 + i * 2] | (gb->sgb->command[4 + i * 2] << 8);
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}
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for (unsigned i = 0; i < 3; i++) {
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gb->sgb->effective_palettes[second * 4 + i + 1] = gb->sgb->command[9 + i * 2] | (gb->sgb->command[10 + i * 2] << 8);
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}
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}
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static inline void load_attribute_file(GB_gameboy_t *gb, unsigned file_index)
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{
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if (file_index > 0x2C) return;
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uint8_t *output = gb->sgb->attribute_map;
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for (unsigned i = 0; i < 90; i++) {
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uint8_t byte = gb->sgb->attribute_files[file_index * 90 + i];
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for (unsigned j = 4; j--;) {
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*(output++) = byte >> 6;
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byte <<= 2;
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}
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}
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}
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static const uint16_t built_in_palettes[] =
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{
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0x67BF, 0x265B, 0x10B5, 0x2866,
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0x637B, 0x3AD9, 0x0956, 0x0000,
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0x7F1F, 0x2A7D, 0x30F3, 0x4CE7,
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0x57FF, 0x2618, 0x001F, 0x006A,
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0x5B7F, 0x3F0F, 0x222D, 0x10EB,
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0x7FBB, 0x2A3C, 0x0015, 0x0900,
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0x2800, 0x7680, 0x01EF, 0x2FFF,
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0x73BF, 0x46FF, 0x0110, 0x0066,
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0x533E, 0x2638, 0x01E5, 0x0000,
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0x7FFF, 0x2BBF, 0x00DF, 0x2C0A,
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0x7F1F, 0x463D, 0x74CF, 0x4CA5,
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0x53FF, 0x03E0, 0x00DF, 0x2800,
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0x433F, 0x72D2, 0x3045, 0x0822,
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0x7FFA, 0x2A5F, 0x0014, 0x0003,
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0x1EED, 0x215C, 0x42FC, 0x0060,
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0x7FFF, 0x5EF7, 0x39CE, 0x0000,
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0x4F5F, 0x630E, 0x159F, 0x3126,
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0x637B, 0x121C, 0x0140, 0x0840,
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0x66BC, 0x3FFF, 0x7EE0, 0x2C84,
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0x5FFE, 0x3EBC, 0x0321, 0x0000,
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0x63FF, 0x36DC, 0x11F6, 0x392A,
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0x65EF, 0x7DBF, 0x035F, 0x2108,
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0x2B6C, 0x7FFF, 0x1CD9, 0x0007,
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0x53FC, 0x1F2F, 0x0E29, 0x0061,
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0x36BE, 0x7EAF, 0x681A, 0x3C00,
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0x7BBE, 0x329D, 0x1DE8, 0x0423,
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0x739F, 0x6A9B, 0x7293, 0x0001,
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0x5FFF, 0x6732, 0x3DA9, 0x2481,
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0x577F, 0x3EBC, 0x456F, 0x1880,
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0x6B57, 0x6E1B, 0x5010, 0x0007,
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0x0F96, 0x2C97, 0x0045, 0x3200,
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0x67FF, 0x2F17, 0x2230, 0x1548,
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};
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static const struct {
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char name[16];
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unsigned palette_index;
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} palette_assignments[] =
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{
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{"ZELDA", 5},
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{"SUPER MARIOLAND", 6},
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{"MARIOLAND2", 0x14},
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{"SUPERMARIOLAND3", 2},
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{"KIRBY DREAM LAND", 0xB},
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{"HOSHINOKA-BI", 0xB},
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{"KIRBY'S PINBALL", 3},
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{"YOSSY NO TAMAGO", 0xC},
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{"MARIO & YOSHI", 0xC},
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{"YOSSY NO COOKIE", 4},
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{"YOSHI'S COOKIE", 4},
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{"DR.MARIO", 0x12},
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{"TETRIS", 0x11},
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{"YAKUMAN", 0x13},
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{"METROID2", 0x1F},
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{"KAERUNOTAMENI", 9},
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{"GOLF", 0x18},
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{"ALLEY WAY", 0x16},
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{"BASEBALL", 0xF},
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{"TENNIS", 0x17},
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{"F1RACE", 0x1E},
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{"KID ICARUS", 0xE},
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{"QIX", 0x19},
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{"SOLARSTRIKER", 7},
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{"X", 0x1C},
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{"GBWARS", 0x15},
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};
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static void command_ready(GB_gameboy_t *gb)
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{
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/* SGB header commands are used to send the contents of the header to the SNES CPU.
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A header command looks like this:
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Command ID: 0b1111xxx1, where xxx is the packet index. (e.g. F1 for [0x104, 0x112), F3 for [0x112, 0x120))
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Checksum: Simple one byte sum for the following content bytes
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0xE content bytes. The last command, FB, is padded with zeros, so information past the header is not sent. */
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if ((gb->sgb->command[0] & 0xF1) == 0xF1) {
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if(gb->boot_rom_finished) return;
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uint8_t checksum = 0;
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for (unsigned i = 2; i < 0x10; i++) {
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checksum += gb->sgb->command[i];
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}
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if (checksum != gb->sgb->command[1]) {
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GB_log(gb, "Failed checksum for SGB header command, disabling SGB features\n");
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gb->sgb->disable_commands = true;
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return;
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}
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unsigned index = (gb->sgb->command[0] >> 1) & 7;
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if (index > 5) {
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return;
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}
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memcpy(&gb->sgb->received_header[index * 14], &gb->sgb->command[2], 14);
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if (gb->sgb->command[0] == 0xfb) {
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if (gb->sgb->received_header[0x42] != 3 || gb->sgb->received_header[0x47] != 0x33) {
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gb->sgb->disable_commands = true;
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for (unsigned i = 0; i < sizeof(palette_assignments) / sizeof(palette_assignments[0]); i++) {
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if (memcmp(palette_assignments[i].name, &gb->sgb->received_header[0x30], sizeof(palette_assignments[i].name)) == 0) {
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gb->sgb->effective_palettes[0] = built_in_palettes[palette_assignments[i].palette_index * 4 - 4];
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gb->sgb->effective_palettes[1] = built_in_palettes[palette_assignments[i].palette_index * 4 + 1 - 4];
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gb->sgb->effective_palettes[2] = built_in_palettes[palette_assignments[i].palette_index * 4 + 2 - 4];
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gb->sgb->effective_palettes[3] = built_in_palettes[palette_assignments[i].palette_index * 4 + 3 - 4];
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break;
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}
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}
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}
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}
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return;
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}
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/* Ignore malformed commands (0 length)*/
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if ((gb->sgb->command[0] & 7) == 0) return;
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switch (gb->sgb->command[0] >> 3) {
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case PAL01:
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pal_command(gb, 0, 1);
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break;
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case PAL23:
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pal_command(gb, 2, 3);
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break;
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case PAL03:
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pal_command(gb, 0, 3);
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break;
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case PAL12:
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pal_command(gb, 1, 2);
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break;
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case ATTR_BLK: {
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struct {
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uint8_t count;
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struct {
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uint8_t control;
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uint8_t palettes;
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uint8_t left, top, right, bottom;
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} data[];
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} *command = (void *)(gb->sgb->command + 1);
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if (command->count > 0x12) return;
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for (unsigned i = 0; i < command->count; i++) {
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bool inside = command->data[i].control & 1;
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bool middle = command->data[i].control & 2;
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bool outside = command->data[i].control & 4;
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uint8_t inside_palette = command->data[i].palettes & 0x3;
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uint8_t middle_palette = (command->data[i].palettes >> 2) & 0x3;
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uint8_t outside_palette = (command->data[i].palettes >> 4) & 0x3;
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if (inside && !middle && !outside) {
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middle = true;
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middle_palette = inside_palette;
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}
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else if (outside && !middle && !inside) {
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middle = true;
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middle_palette = outside_palette;
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}
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command->data[i].left &= 0x1F;
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command->data[i].top &= 0x1F;
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command->data[i].right &= 0x1F;
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command->data[i].bottom &= 0x1F;
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for (unsigned y = 0; y < 18; y++) {
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for (unsigned x = 0; x < 20; x++) {
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if (x < command->data[i].left || x > command->data[i].right ||
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y < command->data[i].top || y > command->data[i].bottom) {
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if (outside) {
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gb->sgb->attribute_map[x + 20 * y] = outside_palette;
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}
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}
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else if (x > command->data[i].left && x < command->data[i].right &&
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y > command->data[i].top && y < command->data[i].bottom) {
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if (inside) {
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gb->sgb->attribute_map[x + 20 * y] = inside_palette;
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}
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}
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else if(middle) {
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gb->sgb->attribute_map[x + 20 * y] = middle_palette;
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}
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}
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}
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}
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break;
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}
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case ATTR_LIN: {
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struct {
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uint8_t count;
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uint8_t data[];
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} *command = (void *)(gb->sgb->command + 1);
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if (command->count > sizeof(gb->sgb->command) - 2) return;
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for (unsigned i = 0; i < command->count; i++) {
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bool horizontal = command->data[i] & 0x80;
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uint8_t palette = (command->data[i] >> 5) & 0x3;
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uint8_t line = (command->data[i]) & 0x1F;
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if (horizontal) {
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if (line > 18) continue;
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for (unsigned x = 0; x < 20; x++) {
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gb->sgb->attribute_map[x + 20 * line] = palette;
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}
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}
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else {
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if (line > 20) continue;
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for (unsigned y = 0; y < 18; y++) {
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gb->sgb->attribute_map[line + 20 * y] = palette;
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}
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}
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}
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break;
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}
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case ATTR_DIV: {
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uint8_t high_palette = gb->sgb->command[1] & 3;
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uint8_t low_palette = (gb->sgb->command[1] >> 2) & 3;
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uint8_t middle_palette = (gb->sgb->command[1] >> 4) & 3;
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bool horizontal = gb->sgb->command[1] & 0x40;
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uint8_t line = gb->sgb->command[2] & 0x1F;
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for (unsigned y = 0; y < 18; y++) {
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for (unsigned x = 0; x < 20; x++) {
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if ((horizontal? y : x) < line) {
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gb->sgb->attribute_map[x + 20 * y] = low_palette;
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}
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else if ((horizontal? y : x) == line) {
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gb->sgb->attribute_map[x + 20 * y] = middle_palette;
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}
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else {
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gb->sgb->attribute_map[x + 20 * y] = high_palette;
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}
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}
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}
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break;
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}
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case PAL_SET:
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memcpy(&gb->sgb->effective_palettes[0],
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&gb->sgb->ram_palettes[4 * (gb->sgb->command[1] + (gb->sgb->command[2] & 1) * 0x100)],
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8);
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memcpy(&gb->sgb->effective_palettes[4],
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&gb->sgb->ram_palettes[4 * (gb->sgb->command[3] + (gb->sgb->command[4] & 1) * 0x100)],
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8);
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memcpy(&gb->sgb->effective_palettes[8],
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&gb->sgb->ram_palettes[4 * (gb->sgb->command[5] + (gb->sgb->command[6] & 1) * 0x100)],
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8);
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memcpy(&gb->sgb->effective_palettes[12],
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&gb->sgb->ram_palettes[4 * (gb->sgb->command[7] + (gb->sgb->command[8] & 1) * 0x100)],
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8);
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gb->sgb->effective_palettes[12] = gb->sgb->effective_palettes[8] =
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gb->sgb->effective_palettes[4] = gb->sgb->effective_palettes[0];
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if (gb->sgb->command[9] & 0x80) {
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load_attribute_file(gb, gb->sgb->command[9] & 0x3F);
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}
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if (gb->sgb->command[9] & 0x40) {
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gb->sgb->mask_mode = MASK_DISABLED;
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}
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break;
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case PAL_TRN:
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gb->sgb->vram_transfer_countdown = 2;
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gb->sgb->transfer_dest = TRANSFER_PALETTES;
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break;
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case DATA_SND:
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// Not supported, but used by almost all SGB games for hot patching, so let's mute the warning for this
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break;
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case MLT_REQ:
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if (gb->sgb->player_count == 1) {
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gb->sgb->current_player = 0;
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}
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gb->sgb->player_count = (gb->sgb->command[1] & 3) + 1; /* Todo: When breaking save state comaptibility,
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fix this to be 0 based. */
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if (gb->sgb->player_count == 3) {
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gb->sgb->current_player++;
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}
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gb->sgb->mlt_lock = true;
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break;
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case CHR_TRN:
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gb->sgb->vram_transfer_countdown = 2;
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gb->sgb->transfer_dest = (gb->sgb->command[1] & 1)? TRANSFER_HIGH_TILES : TRANSFER_LOW_TILES;
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break;
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case PCT_TRN:
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gb->sgb->vram_transfer_countdown = 2;
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gb->sgb->transfer_dest = TRANSFER_BORDER_DATA;
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break;
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case ATTR_TRN:
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gb->sgb->vram_transfer_countdown = 2;
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gb->sgb->transfer_dest = TRANSFER_ATTRIBUTES;
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break;
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case ATTR_SET:
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load_attribute_file(gb, gb->sgb->command[0] & 0x3F);
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if (gb->sgb->command[0] & 0x40) {
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gb->sgb->mask_mode = MASK_DISABLED;
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}
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break;
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case MASK_EN:
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gb->sgb->mask_mode = gb->sgb->command[1] & 3;
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break;
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default:
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if ((gb->sgb->command[0] >> 3) == 8 &&
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(gb->sgb->command[1] & ~0x80) == 0 &&
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(gb->sgb->command[2] & ~0x80) == 0) {
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/* Mute/dummy sound commands, ignore this command as it's used by many games at startup */
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break;
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}
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GB_log(gb, "Unimplemented SGB command %x: ", gb->sgb->command[0] >> 3);
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for (unsigned i = 0; i < gb->sgb->command_write_index / 8; i++) {
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GB_log(gb, "%02x ", gb->sgb->command[i]);
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}
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GB_log(gb, "\n");
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}
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}
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void GB_sgb_write(GB_gameboy_t *gb, uint8_t value)
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{
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if (!GB_is_sgb(gb)) return;
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if (!GB_is_hle_sgb(gb)) {
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/* Notify via callback */
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return;
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}
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if (gb->sgb->disable_commands) return;
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if (gb->sgb->command_write_index >= sizeof(gb->sgb->command) * 8) {
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return;
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}
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uint16_t command_size = (gb->sgb->command[0] & 7 ?: 1) * SGB_PACKET_SIZE * 8;
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if ((gb->sgb->command[0] & 0xF1) == 0xF1) {
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command_size = SGB_PACKET_SIZE * 8;
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}
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if ((value & 0x20) == 0 && (gb->io_registers[GB_IO_JOYP] & 0x20) != 0) {
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gb->sgb->mlt_lock ^= true;
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}
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switch ((value >> 4) & 3) {
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case 3:
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gb->sgb->ready_for_pulse = true;
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if ((gb->sgb->player_count & 1) == 0 && !gb->sgb->mlt_lock) {
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gb->sgb->current_player++;
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gb->sgb->current_player &= 3;
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gb->sgb->mlt_lock = true;
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}
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break;
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case 2: // Zero
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if (!gb->sgb->ready_for_pulse || !gb->sgb->ready_for_write) return;
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if (gb->sgb->ready_for_stop) {
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if (gb->sgb->command_write_index == command_size) {
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command_ready(gb);
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gb->sgb->command_write_index = 0;
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memset(gb->sgb->command, 0, sizeof(gb->sgb->command));
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}
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gb->sgb->ready_for_pulse = false;
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gb->sgb->ready_for_write = false;
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gb->sgb->ready_for_stop = false;
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}
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else {
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gb->sgb->command_write_index++;
|
|
gb->sgb->ready_for_pulse = false;
|
|
if (((gb->sgb->command_write_index) & (SGB_PACKET_SIZE * 8 - 1)) == 0) {
|
|
gb->sgb->ready_for_stop = true;
|
|
}
|
|
}
|
|
break;
|
|
case 1: // One
|
|
if (!gb->sgb->ready_for_pulse || !gb->sgb->ready_for_write) return;
|
|
if (gb->sgb->ready_for_stop) {
|
|
GB_log(gb, "Corrupt SGB command.\n");
|
|
gb->sgb->ready_for_pulse = false;
|
|
gb->sgb->ready_for_write = false;
|
|
gb->sgb->command_write_index = 0;
|
|
memset(gb->sgb->command, 0, sizeof(gb->sgb->command));
|
|
}
|
|
else {
|
|
gb->sgb->command[gb->sgb->command_write_index / 8] |= 1 << (gb->sgb->command_write_index & 7);
|
|
gb->sgb->command_write_index++;
|
|
gb->sgb->ready_for_pulse = false;
|
|
if (((gb->sgb->command_write_index) & (SGB_PACKET_SIZE * 8 - 1)) == 0) {
|
|
gb->sgb->ready_for_stop = true;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0:
|
|
if (!gb->sgb->ready_for_pulse) return;
|
|
gb->sgb->ready_for_write = true;
|
|
gb->sgb->ready_for_pulse = false;
|
|
if (((gb->sgb->command_write_index) & (SGB_PACKET_SIZE * 8 - 1)) != 0 ||
|
|
gb->sgb->command_write_index == 0 ||
|
|
gb->sgb->ready_for_stop) {
|
|
gb->sgb->command_write_index = 0;
|
|
memset(gb->sgb->command, 0, sizeof(gb->sgb->command));
|
|
gb->sgb->ready_for_stop = false;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static uint32_t convert_rgb15(GB_gameboy_t *gb, uint16_t color)
|
|
{
|
|
return GB_convert_rgb15(gb, color);
|
|
}
|
|
|
|
static uint32_t convert_rgb15_with_fade(GB_gameboy_t *gb, uint16_t color, uint8_t fade)
|
|
{
|
|
uint8_t r = ((color) & 0x1F) - fade;
|
|
uint8_t g = ((color >> 5) & 0x1F) - fade;
|
|
uint8_t b = ((color >> 10) & 0x1F) - fade;
|
|
|
|
if (r >= 0x20) r = 0;
|
|
if (g >= 0x20) g = 0;
|
|
if (b >= 0x20) b = 0;
|
|
|
|
color = r | (g << 5) | (b << 10);
|
|
|
|
return GB_convert_rgb15(gb, color);
|
|
}
|
|
|
|
#include <stdio.h>
|
|
static void render_boot_animation (GB_gameboy_t *gb)
|
|
{
|
|
#include "sgb_animation_logo.inc"
|
|
uint32_t *output = &gb->screen[48 + 40 * 256];
|
|
uint8_t *input = animation_logo;
|
|
unsigned fade_blue = 0;
|
|
unsigned fade_red = 0;
|
|
if (gb->sgb->intro_animation < 80 - 32) {
|
|
fade_blue = 32;
|
|
}
|
|
else if (gb->sgb->intro_animation < 80) {
|
|
fade_blue = 80 - gb->sgb->intro_animation;
|
|
}
|
|
else if (gb->sgb->intro_animation > INTRO_ANIMATION_LENGTH - 32) {
|
|
fade_red = fade_blue = gb->sgb->intro_animation - INTRO_ANIMATION_LENGTH + 32;
|
|
}
|
|
uint32_t colors[] = {
|
|
convert_rgb15(gb, 0),
|
|
convert_rgb15_with_fade(gb, 0x14A5, fade_blue),
|
|
convert_rgb15_with_fade(gb, 0x54E0, fade_blue),
|
|
convert_rgb15_with_fade(gb, 0x0019, fade_red),
|
|
convert_rgb15(gb, 0x0011),
|
|
convert_rgb15(gb, 0x0009),
|
|
};
|
|
unsigned y_min = (144 - animation_logo_height) / 2;
|
|
unsigned y_max = y_min + animation_logo_height;
|
|
for (unsigned y = 0; y < 144; y++) {
|
|
for (unsigned x = 0; x < 160; x++) {
|
|
if (y < y_min || y >= y_max) {
|
|
*(output++) = colors[0];
|
|
}
|
|
else {
|
|
uint8_t color = *input;
|
|
if (color >= 3) {
|
|
if (color == gb->sgb->intro_animation / 2 - 3) {
|
|
color = 5;
|
|
}
|
|
else if (color == gb->sgb->intro_animation / 2 - 4) {
|
|
color = 4;
|
|
}
|
|
else if (color < gb->sgb->intro_animation / 2 - 4) {
|
|
color = 3;
|
|
}
|
|
else {
|
|
color = 0;
|
|
}
|
|
}
|
|
*(output++) = colors[color];
|
|
input++;
|
|
}
|
|
}
|
|
output += 256 - 160;
|
|
}
|
|
}
|
|
|
|
static void render_jingle(GB_gameboy_t *gb, size_t count);
|
|
void GB_sgb_render(GB_gameboy_t *gb)
|
|
{
|
|
if (gb->apu_output.sample_rate) {
|
|
render_jingle(gb, gb->apu_output.sample_rate / GB_get_usual_frame_rate(gb));
|
|
}
|
|
|
|
if (gb->sgb->intro_animation < INTRO_ANIMATION_LENGTH) gb->sgb->intro_animation++;
|
|
|
|
if (!gb->screen || !gb->rgb_encode_callback) return;
|
|
|
|
if (gb->sgb->mask_mode != MASK_FREEZE) {
|
|
memcpy(gb->sgb->effective_screen_buffer,
|
|
gb->sgb->screen_buffer,
|
|
sizeof(gb->sgb->effective_screen_buffer));
|
|
}
|
|
|
|
if (gb->sgb->vram_transfer_countdown) {
|
|
if (--gb->sgb->vram_transfer_countdown == 0) {
|
|
if (gb->sgb->transfer_dest == TRANSFER_LOW_TILES || gb->sgb->transfer_dest == TRANSFER_HIGH_TILES) {
|
|
uint8_t *base = &gb->sgb->pending_border.tiles[gb->sgb->transfer_dest == TRANSFER_HIGH_TILES ? 0x80 * 8 * 8 : 0];
|
|
for (unsigned tile = 0; tile < 0x80; tile++) {
|
|
unsigned tile_x = (tile % 10) * 16;
|
|
unsigned tile_y = (tile / 10) * 8;
|
|
for (unsigned y = 0; y < 0x8; y++) {
|
|
for (unsigned x = 0; x < 0x8; x++) {
|
|
base[tile * 8 * 8 + y * 8 + x] = gb->sgb->screen_buffer[(tile_x + x) + (tile_y + y) * 160] +
|
|
gb->sgb->screen_buffer[(tile_x + x + 8) + (tile_y + y) * 160] * 4;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
else {
|
|
unsigned size = 0;
|
|
uint16_t *data = NULL;
|
|
|
|
switch (gb->sgb->transfer_dest) {
|
|
case TRANSFER_PALETTES:
|
|
size = 0x100;
|
|
data = gb->sgb->ram_palettes;
|
|
break;
|
|
case TRANSFER_BORDER_DATA:
|
|
size = 0x88;
|
|
data = gb->sgb->pending_border.raw_data;
|
|
break;
|
|
case TRANSFER_ATTRIBUTES:
|
|
size = 0xFE;
|
|
data = (uint16_t *)gb->sgb->attribute_files;
|
|
break;
|
|
default:
|
|
return; // Corrupt state?
|
|
}
|
|
|
|
for (unsigned tile = 0; tile < size; tile++) {
|
|
unsigned tile_x = (tile % 20) * 8;
|
|
unsigned tile_y = (tile / 20) * 8;
|
|
for (unsigned y = 0; y < 0x8; y++) {
|
|
static const uint16_t pixel_to_bits[4] = {0x0000, 0x0080, 0x8000, 0x8080};
|
|
*data = 0;
|
|
for (unsigned x = 0; x < 8; x++) {
|
|
*data |= pixel_to_bits[gb->sgb->screen_buffer[(tile_x + x) + (tile_y + y) * 160] & 3] >> x;
|
|
}
|
|
#ifdef GB_BIG_ENDIAN
|
|
if (gb->sgb->transfer_dest == TRANSFER_ATTRIBUTES) {
|
|
*data = __builtin_bswap16(*data);
|
|
}
|
|
#endif
|
|
data++;
|
|
}
|
|
}
|
|
if (gb->sgb->transfer_dest == TRANSFER_BORDER_DATA) {
|
|
gb->sgb->border_animation = 64;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uint32_t colors[4 * 4];
|
|
for (unsigned i = 0; i < 4 * 4; i++) {
|
|
colors[i] = convert_rgb15(gb, gb->sgb->effective_palettes[i]);
|
|
}
|
|
|
|
if (gb->sgb->intro_animation < INTRO_ANIMATION_LENGTH) {
|
|
render_boot_animation(gb);
|
|
}
|
|
else {
|
|
uint32_t *output = &gb->screen[48 + 40 * 256];
|
|
uint8_t *input = gb->sgb->effective_screen_buffer;
|
|
switch ((mask_mode_t) gb->sgb->mask_mode) {
|
|
case MASK_DISABLED:
|
|
case MASK_FREEZE: {
|
|
for (unsigned y = 0; y < 144; y++) {
|
|
for (unsigned x = 0; x < 160; x++) {
|
|
uint8_t palette = gb->sgb->attribute_map[x / 8 + y / 8 * 20] & 3;
|
|
*(output++) = colors[(*(input++) & 3) + palette * 4];
|
|
}
|
|
output += 256 - 160;
|
|
}
|
|
break;
|
|
}
|
|
case MASK_BLACK:
|
|
{
|
|
uint32_t black = convert_rgb15(gb, 0);
|
|
for (unsigned y = 0; y < 144; y++) {
|
|
for (unsigned x = 0; x < 160; x++) {
|
|
*(output++) = black;
|
|
}
|
|
output += 256 - 160;
|
|
}
|
|
break;
|
|
}
|
|
case MASK_COLOR_0:
|
|
{
|
|
for (unsigned y = 0; y < 144; y++) {
|
|
for (unsigned x = 0; x < 160; x++) {
|
|
*(output++) = colors[0];
|
|
}
|
|
output += 256 - 160;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint32_t border_colors[16 * 4];
|
|
if (gb->sgb->border_animation == 0 || gb->sgb->intro_animation < INTRO_ANIMATION_LENGTH) {
|
|
for (unsigned i = 0; i < 16 * 4; i++) {
|
|
border_colors[i] = convert_rgb15(gb, gb->sgb->border.palette[i]);
|
|
}
|
|
}
|
|
else if (gb->sgb->border_animation > 32) {
|
|
gb->sgb->border_animation--;
|
|
for (unsigned i = 0; i < 16 * 4; i++) {
|
|
border_colors[i] = convert_rgb15_with_fade(gb, gb->sgb->border.palette[i], 64 - gb->sgb->border_animation);
|
|
}
|
|
}
|
|
else {
|
|
gb->sgb->border_animation--;
|
|
for (unsigned i = 0; i < 16 * 4; i++) {
|
|
border_colors[i] = convert_rgb15_with_fade(gb, gb->sgb->border.palette[i], gb->sgb->border_animation);
|
|
}
|
|
}
|
|
|
|
|
|
if (gb->sgb->border_animation == 32) {
|
|
memcpy(&gb->sgb->border, &gb->sgb->pending_border, sizeof(gb->sgb->border));
|
|
}
|
|
|
|
for (unsigned tile_y = 0; tile_y < 28; tile_y++) {
|
|
for (unsigned tile_x = 0; tile_x < 32; tile_x++) {
|
|
bool gb_area = false;
|
|
if (tile_x >= 6 && tile_x < 26 && tile_y >= 5 && tile_y < 23) {
|
|
gb_area = true;
|
|
}
|
|
uint16_t tile = gb->sgb->border.map[tile_x + tile_y * 32];
|
|
uint8_t flip_x = (tile & 0x4000)? 0x7 : 0;
|
|
uint8_t flip_y = (tile & 0x8000)? 0x7 : 0;
|
|
uint8_t palette = (tile >> 10) & 3;
|
|
for (unsigned y = 0; y < 8; y++) {
|
|
for (unsigned x = 0; x < 8; x++) {
|
|
uint8_t color = gb->sgb->border.tiles[(tile & 0xFF) * 64 + (x ^ flip_x) + (y ^ flip_y) * 8] & 0xF;
|
|
if (color == 0) {
|
|
if (gb_area) continue;
|
|
gb->screen[tile_x * 8 + x + (tile_y * 8 + y) * 0x100] = colors[0];
|
|
}
|
|
else {
|
|
gb->screen[tile_x * 8 + x + (tile_y * 8 + y) * 0x100] = border_colors[color + palette * 16];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void GB_sgb_load_default_data(GB_gameboy_t *gb)
|
|
{
|
|
|
|
#include "sgb_border.inc"
|
|
|
|
memcpy(gb->sgb->border.map, tilemap, sizeof(tilemap));
|
|
memcpy(gb->sgb->border.palette, palette, sizeof(palette));
|
|
|
|
/* Expend tileset */
|
|
for (unsigned tile = 0; tile < sizeof(tiles) / 32; tile++) {
|
|
for (unsigned y = 0; y < 8; y++) {
|
|
for (unsigned x = 0; x < 8; x++) {
|
|
gb->sgb->border.tiles[tile * 8 * 8 + y * 8 + x] =
|
|
(tiles[tile * 32 + y * 2 + 0] & (1 << (7 ^ x)) ? 1 : 0) |
|
|
(tiles[tile * 32 + y * 2 + 1] & (1 << (7 ^ x)) ? 2 : 0) |
|
|
(tiles[tile * 32 + y * 2 + 16] & (1 << (7 ^ x)) ? 4 : 0) |
|
|
(tiles[tile * 32 + y * 2 + 17] & (1 << (7 ^ x)) ? 8 : 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (gb->model != GB_MODEL_SGB2) {
|
|
/* Delete the "2" */
|
|
gb->sgb->border.map[25 * 32 + 25] = gb->sgb->border.map[25 * 32 + 26] =
|
|
gb->sgb->border.map[26 * 32 + 25] = gb->sgb->border.map[26 * 32 + 26] =
|
|
gb->sgb->border.map[27 * 32 + 25] = gb->sgb->border.map[27 * 32 + 26] =
|
|
gb->sgb->border.map[0];
|
|
|
|
/* Re-center */
|
|
memmove(&gb->sgb->border.map[25 * 32 + 1], &gb->sgb->border.map[25 * 32], (32 * 3 - 1) * sizeof(gb->sgb->border.map[0]));
|
|
}
|
|
gb->sgb->effective_palettes[0] = built_in_palettes[0];
|
|
gb->sgb->effective_palettes[1] = built_in_palettes[1];
|
|
gb->sgb->effective_palettes[2] = built_in_palettes[2];
|
|
gb->sgb->effective_palettes[3] = built_in_palettes[3];
|
|
}
|
|
|
|
static double fm_synth(double phase)
|
|
{
|
|
return (sin(phase * M_PI * 2) +
|
|
sin(phase * M_PI * 2 + sin(phase * M_PI * 2)) +
|
|
sin(phase * M_PI * 2 + sin(phase * M_PI * 3)) +
|
|
sin(phase * M_PI * 2 + sin(phase * M_PI * 4))) / 4;
|
|
}
|
|
|
|
static double fm_sweep(double phase)
|
|
{
|
|
double ret = 0;
|
|
for (unsigned i = 0; i < 8; i++) {
|
|
ret += sin((phase * M_PI * 2 + sin(phase * M_PI * 8) / 4) * pow(1.25, i)) * (8 - i) / 36;
|
|
}
|
|
return ret;
|
|
}
|
|
static double random_double(void)
|
|
{
|
|
return ((signed)(GB_random32() % 0x10001) - 0x8000) / (double) 0x8000;
|
|
}
|
|
|
|
static void render_jingle(GB_gameboy_t *gb, size_t count)
|
|
{
|
|
const double frequencies[7] = {
|
|
466.16, // Bb4
|
|
587.33, // D5
|
|
698.46, // F5
|
|
830.61, // Ab5
|
|
1046.50, // C6
|
|
1244.51, // Eb6
|
|
1567.98, // G6
|
|
};
|
|
|
|
assert(gb->apu_output.sample_callback);
|
|
|
|
if (gb->sgb->intro_animation < 0) {
|
|
GB_sample_t sample = {0, 0};
|
|
for (unsigned i = 0; i < count; i++) {
|
|
gb->apu_output.sample_callback(gb, &sample);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (gb->sgb->intro_animation >= INTRO_ANIMATION_LENGTH) return;
|
|
|
|
signed jingle_stage = (gb->sgb->intro_animation - 64) / 3;
|
|
double sweep_cutoff_ratio = 2000.0 * pow(2, gb->sgb->intro_animation / 20.0) / gb->apu_output.sample_rate;
|
|
double sweep_phase_shift = 1000.0 * pow(2, gb->sgb->intro_animation / 40.0) / gb->apu_output.sample_rate;
|
|
if (sweep_cutoff_ratio > 1) {
|
|
sweep_cutoff_ratio = 1;
|
|
}
|
|
|
|
GB_sample_t stereo;
|
|
for (unsigned i = 0; i < count; i++) {
|
|
double sample = 0;
|
|
for (signed f = 0; f < 7 && f < jingle_stage; f++) {
|
|
sample += fm_synth(gb->sgb_intro_jingle_phases[f]) *
|
|
(0.75 * pow(0.5, jingle_stage - f) + 0.25) / 5.0;
|
|
gb->sgb_intro_jingle_phases[f] += frequencies[f] / gb->apu_output.sample_rate;
|
|
}
|
|
if (gb->sgb->intro_animation > 100) {
|
|
sample *= pow((INTRO_ANIMATION_LENGTH - gb->sgb->intro_animation) / (INTRO_ANIMATION_LENGTH - 100.0), 3);
|
|
}
|
|
|
|
if (gb->sgb->intro_animation < 120) {
|
|
double next = fm_sweep(gb->sgb_intro_sweep_phase) * 0.3 + random_double() * 0.7;
|
|
gb->sgb_intro_sweep_phase += sweep_phase_shift;
|
|
|
|
gb->sgb_intro_sweep_previous_sample = next * (sweep_cutoff_ratio) +
|
|
gb->sgb_intro_sweep_previous_sample * (1 - sweep_cutoff_ratio);
|
|
sample += gb->sgb_intro_sweep_previous_sample * pow((120 - gb->sgb->intro_animation) / 120.0, 2) * 0.8;
|
|
}
|
|
|
|
stereo.left = stereo.right = sample * 0x7000;
|
|
gb->apu_output.sample_callback(gb, &stereo);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|