vdp2: add nbg0_aseprite_rustboro

Makefile

@@ -66,6 +66,10 @@ vdp2/nbg0.elf: vdp2/nbg0.o res/butterfly.data.o res/butterfly.data.pal.o
 
 vdp2/nbg0_16color.elf: vdp2/nbg0_16color.o res/kirby.data.o res/kirby.data.pal.o
 
+vdp2/nbg0_aseprite.elf: vdp2/nbg0_aseprite.o aseprite/palette.bin.o aseprite/character_patterns.bin.o aseprite/pattern_name_table.bin.o
+
+vdp2/nbg0_aseprite_rustboro.elf: vdp2/nbg0_aseprite_rustboro.o aseprite/rustboro/character_pattern__tileset_0.bin.o aseprite/rustboro/character_pattern__tileset_1.bin.o aseprite/rustboro/palette.bin.o aseprite/rustboro/pattern_name_table__layer_0.bin.o aseprite/rustboro/pattern_name_table__layer_1.bin.o
+
 vdp2/nbg0_font.elf: vdp2/nbg0_font.o saturn/start.o font/hp_100lx_4bit.data.o
 
 vdp2/rbg0_font.elf: vdp2/rbg0_font.o saturn/start.o font/hp_100lx_4bit.data.o

aseprite/rustboro/character_pattern__tileset_0.bin.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <stdint.h>
+extern uint32_t _binary_aseprite_rustboro_character_pattern__tileset_0_bin_start __asm("_binary_aseprite_rustboro_character_pattern__tileset_0_bin_start");
+extern uint32_t _binary_aseprite_rustboro_character_pattern__tileset_0_bin_end __asm("_binary_aseprite_rustboro_character_pattern__tileset_0_bin_end");
+extern uint32_t _binary_aseprite_rustboro_character_pattern__tileset_0_bin_size __asm("_binary_aseprite_rustboro_character_pattern__tileset_0_bin_size");

aseprite/rustboro/character_pattern__tileset_1.bin.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <stdint.h>
+extern uint32_t _binary_aseprite_rustboro_character_pattern__tileset_1_bin_start __asm("_binary_aseprite_rustboro_character_pattern__tileset_1_bin_start");
+extern uint32_t _binary_aseprite_rustboro_character_pattern__tileset_1_bin_end __asm("_binary_aseprite_rustboro_character_pattern__tileset_1_bin_end");
+extern uint32_t _binary_aseprite_rustboro_character_pattern__tileset_1_bin_size __asm("_binary_aseprite_rustboro_character_pattern__tileset_1_bin_size");

aseprite/rustboro/palette.bin.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <stdint.h>
+extern uint32_t _binary_aseprite_rustboro_palette_bin_start __asm("_binary_aseprite_rustboro_palette_bin_start");
+extern uint32_t _binary_aseprite_rustboro_palette_bin_end __asm("_binary_aseprite_rustboro_palette_bin_end");
+extern uint32_t _binary_aseprite_rustboro_palette_bin_size __asm("_binary_aseprite_rustboro_palette_bin_size");

aseprite/rustboro/pattern_name_table__layer_0.bin.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <stdint.h>
+extern uint32_t _binary_aseprite_rustboro_pattern_name_table__layer_0_bin_start __asm("_binary_aseprite_rustboro_pattern_name_table__layer_0_bin_start");
+extern uint32_t _binary_aseprite_rustboro_pattern_name_table__layer_0_bin_end __asm("_binary_aseprite_rustboro_pattern_name_table__layer_0_bin_end");
+extern uint32_t _binary_aseprite_rustboro_pattern_name_table__layer_0_bin_size __asm("_binary_aseprite_rustboro_pattern_name_table__layer_0_bin_size");

aseprite/rustboro/pattern_name_table__layer_1.bin.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <stdint.h>
+extern uint32_t _binary_aseprite_rustboro_pattern_name_table__layer_1_bin_start __asm("_binary_aseprite_rustboro_pattern_name_table__layer_1_bin_start");
+extern uint32_t _binary_aseprite_rustboro_pattern_name_table__layer_1_bin_end __asm("_binary_aseprite_rustboro_pattern_name_table__layer_1_bin_end");
+extern uint32_t _binary_aseprite_rustboro_pattern_name_table__layer_1_bin_size __asm("_binary_aseprite_rustboro_pattern_name_table__layer_1_bin_size");

vdp2/nbg0_aseprite_rustboro.cpp

@@ -0,0 +1,187 @@
+#include <stdint.h>
+
+#include "vdp2.h"
+#include "../common/vdp2_func.hpp"
+
+#include "aseprite/rustboro/palette.bin.h"
+#include "aseprite/rustboro/character_pattern__tileset_0.bin.h"
+#include "aseprite/rustboro/character_pattern__tileset_1.bin.h"
+#include "aseprite/rustboro/pattern_name_table__layer_0.bin.h"
+#include "aseprite/rustboro/pattern_name_table__layer_1.bin.h"
+
+void palette_data()
+{
+  const uint16_t * buf = reinterpret_cast<uint16_t *>(&_binary_aseprite_rustboro_palette_bin_start);
+  const uint32_t buf_size = reinterpret_cast<uint32_t>(&_binary_aseprite_rustboro_palette_bin_size);
+
+  for (uint32_t i = 0; i < buf_size / 2; i++) {
+    vdp2.cram.u16[i] = buf[i];
+  }
+}
+
+typedef struct buf_size {
+  uint32_t const * const buf;
+  const uint32_t size;
+} buf_size_t;
+
+const buf_size_t character_patterns[] = {
+  {
+    .buf = (uint32_t *)(&_binary_aseprite_rustboro_character_pattern__tileset_0_bin_start),
+    .size = (uint32_t)(&_binary_aseprite_rustboro_character_pattern__tileset_0_bin_size),
+  },
+  {
+    .buf = (uint32_t *)(&_binary_aseprite_rustboro_character_pattern__tileset_1_bin_start),
+    .size = (uint32_t)(&_binary_aseprite_rustboro_character_pattern__tileset_1_bin_size),
+  },
+};
+
+uint32_t character_pattern_data(const buf_size_t * buf_size, const uint32_t top)
+{
+  const uint32_t base_address = top - buf_size->size; // in bytes
+
+  for (uint32_t i = 0; i < (buf_size->size / 4); i++) {
+    vdp2.vram.u32[(base_address / 4) + i] = buf_size->buf[i];
+  }
+
+  return base_address;
+}
+
+const buf_size_t pattern_name_tables[] = {
+  {
+    .buf = (uint32_t *)(&_binary_aseprite_rustboro_pattern_name_table__layer_0_bin_start),
+    .size = (uint32_t)(&_binary_aseprite_rustboro_pattern_name_table__layer_0_bin_size),
+  },
+  {
+    .buf = (uint32_t *)(&_binary_aseprite_rustboro_pattern_name_table__layer_1_bin_start),
+    .size = (uint32_t)(&_binary_aseprite_rustboro_pattern_name_table__layer_1_bin_size),
+  },
+};
+
+void pattern_name_table_data(const buf_size_t * buf_size,
+                             const uint32_t vram_offset,
+                             const uint32_t character_offset)
+{
+  for (uint32_t i = 0; i < buf_size->size / 4; i++) {
+    uint32_t data = buf_size->buf[i];
+    uint32_t character_number = (data & 0x7fff) * 8 + character_offset;
+    uint32_t flags = data & 0xffff0000;
+    vdp2.vram.u32[(vram_offset / 4) + i] = flags | character_number;
+  }
+}
+
+void main()
+{
+  v_blank_in();
+
+  // DISP: Please make sure to change this bit from 0 to 1 during V blank.
+  vdp2.reg.TVMD = ( TVMD__DISP | TVMD__LSMD__NON_INTERLACE
+                  | TVMD__VRESO__240 | TVMD__HRESO__NORMAL_320);
+
+
+  /* set the color mode to 5bits per channel, 1024 colors */
+  vdp2.reg.RAMCTL = RAMCTL__CRMD__RGB_5BIT_1024;
+
+  vdp2.reg.PRINA = PRINA__N0PRIN(1) | PRINA__N1PRIN(2);
+
+  vdp2.reg.VRSIZE = 0;
+
+  /* enable display of NBG0 */
+  vdp2.reg.BGON = BGON__N0ON | BGON__N0TPON
+                | BGON__N1ON;
+
+  /* set character format for NBG0 to palettized 16 color
+     set enable "cell format" for NBG0
+     set character size for NBG0 to 1x1 cell */
+  vdp2.reg.CHCTLA = CHCTLA__N0CHCN__256_COLOR
+                  | CHCTLA__N0BMEN__CELL_FORMAT
+                  | CHCTLA__N0CHSZ__2x2_CELL
+                  | CHCTLA__N1CHCN__256_COLOR
+                  | CHCTLA__N1BMEN__CELL_FORMAT
+                  | CHCTLA__N1CHSZ__2x2_CELL;
+
+  /* plane size */
+  vdp2.reg.PLSZ = PLSZ__N0PLSZ__2x2 | PLSZ__N1PLSZ__2x2;
+
+  /* map plane offset
+     1-word: value of bit 6-0 * 0x2000
+     2-word: value of bit 5-0 * 0x4000
+  */
+  constexpr int plane_a = 0;
+  constexpr int plane_a_offset = plane_a * 0x1000;
+
+  constexpr int plane_b = 4;
+  constexpr int plane_b_offset = plane_b * 0x1000;
+
+// Enable VRAM bank partitioning
+  vdp2.reg.RAMCTL = RAMCTL__VRAMD | RAMCTL__VRBMD;
+
+  vdp2.reg.MPOFN = MPOFN__N1MP(0) | MPOFN__N0MP(0); // bits 8~6
+
+  vdp2.reg.MPABN0 = MPABN0__N0MPB(plane_a) | MPABN0__N0MPA(plane_a); // bits 5~0
+  vdp2.reg.MPCDN0 = MPCDN0__N0MPD(plane_a) | MPCDN0__N0MPC(plane_a); // bits 5~0
+  vdp2.reg.PNCN0 = PNCN0__N0PNB__2WORD;
+
+  vdp2.reg.MPABN1 = MPABN1__N1MPB(plane_b) | MPABN1__N1MPA(plane_b); // bits 5~0
+  vdp2.reg.MPCDN1 = MPCDN1__N1MPD(plane_b) | MPCDN1__N1MPC(plane_b); // bits 5~0
+  vdp2.reg.PNCN1 = PNCN1__N1PNB__2WORD;
+
+  // cpu access
+  vdp2.reg.CYCA0 = 0xeeeeeeee;
+  vdp2.reg.CYCA1 = 0xeeeeeeee;
+  vdp2.reg.CYCB0 = 0xeeeeeeee;
+  vdp2.reg.CYCB1 = 0xeeeeeeee;
+
+  uint32_t top = (sizeof (union vdp2_vram));
+  palette_data();
+
+  top = character_pattern_data(&character_patterns[0], top);
+  uint32_t pattern_base_0 = top / 32;
+
+  top = character_pattern_data(&character_patterns[1], top);
+  uint32_t pattern_base_1 = top / 32;
+
+  pattern_name_table_data(&pattern_name_tables[0],
+                          plane_a_offset,
+                          pattern_base_0);
+
+  pattern_name_table_data(&pattern_name_tables[1],
+                          plane_b_offset,
+                          pattern_base_1);
+
+  int sx = 0;
+  int sy = 0;
+  int dsx = 1;
+  int dsy = 1;
+
+  vdp2.reg.CYCA0 = 0x01ffffff;
+  vdp2.reg.CYCA1 = 0x01ffffff;
+  vdp2.reg.CYCB0 = 0x45ffffff;
+  vdp2.reg.CYCB1 = 0x45ffffff;
+
+  while (true) {
+    vdp2.reg.SCXIN0 = sx >> 2;
+    vdp2.reg.SCXDN0 = (sx & 0b11) << 14;
+    vdp2.reg.SCYIN0 = sy >> 1;
+    vdp2.reg.SCYDN0 = (sy & 1) << 15;
+
+    vdp2.reg.SCXIN1 = sx >> 2;
+    vdp2.reg.SCXDN1 = (sx & 0b11) << 14;
+    vdp2.reg.SCYIN1 = sy >> 1;
+    vdp2.reg.SCYDN1 = (sy & 1) << 15;
+
+    if ((sx >> 2) >= 320 + 10)
+      dsx = -1;
+    if ((sx >> 2) <= 0 - 10)
+      dsx = +1;
+    if ((sy >> 1) >= 720 + 10)
+      dsy = -1;
+    if ((sy >> 1) <= 0 - 10)
+      dsy = +1;
+
+    sx += dsx;
+    sy += dsy;
+
+    while ((vdp2.reg.TVSTAT & TVSTAT__VBLANK) != 0);
+    while ((vdp2.reg.TVSTAT & TVSTAT__VBLANK) == 0);
+  }
+}