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Add rudimentary affine background layer support.

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lifning 2022-08-07 01:49:32 -07:00 committed by Gwilym Kuiper
parent 0a991af2e9
commit ee576597c2
30 changed files with 940 additions and 328 deletions
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10
agb-fixnum/src/lib.rs
View file

@ -566,6 +566,7 @@ impl<I: FixedWidthUnsignedInteger, const N: usize> Debug for Num<I, N> {
/// A vector of two points: (x, y) represened by integers or fixed point numbers
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
#[repr(C)]
pub struct Vector2D<T: Number> {
/// The x coordinate
pub x: T,
@ -1211,6 +1212,15 @@ mod tests {
}
}
#[test]
fn test_only_frac_bits() {
let quarter: Num<u8, 8> = num!(0.25);
let neg_quarter: Num<i16, 15> = num!(-0.25);
assert_eq!(quarter + quarter, num!(0.5));
assert_eq!(neg_quarter + neg_quarter, num!(-0.5));
}
#[test]
fn test_vector_multiplication_and_division() {
let a: Vector2D<i32> = (1, 2).into();

67
agb-image-converter/src/lib.rs
View file

@ -132,7 +132,7 @@ pub fn include_aseprite_inner(input: TokenStream) -> TokenStream {
let optimised_results = optimiser.optimise_palettes();
let (palette_data, tile_data, assignments) = palete_tile_data(&optimised_results, &images);
let (palette_data, tile_data, assignments) = palette_tile_data(&optimised_results, &images);
let palette_data = palette_data.iter().map(|colours| {
quote! {
@ -273,7 +273,7 @@ fn add_to_optimiser(
}
}
fn palete_tile_data(
fn palette_tile_data(
optimiser: &Palette16OptimisationResults,
images: &[Image],
) -> (Vec<Vec<u16>>, Vec<u8>, Vec<usize>) {
@ -293,41 +293,54 @@ fn palete_tile_data(
.collect();
let mut tile_data = Vec::new();
let tile_size = TileSize::Tile8;
for image in images {
let tile_size = 8;
let tiles_x = image.width / tile_size;
let tiles_y = image.height / tile_size;
add_image_to_tile_data(&mut tile_data, image, tile_size, &optimiser)
}
for y in 0..tiles_y {
for x in 0..tiles_x {
let palette_index = optimiser.assignments[y * tiles_x + x];
let palette = &optimiser.optimised_palettes[palette_index];
let tile_data = collapse_to_4bpp(&tile_data);
for inner_y in 0..tile_size / 8 {
for inner_x in 0..tile_size / 8 {
for j in inner_y * 8..inner_y * 8 + 8 {
for i in inner_x * 8..inner_x * 8 + 8 {
let colour = image.colour(x * tile_size + i, y * tile_size + j);
tile_data.push(
palette.colour_index(colour, optimiser.transparent_colour),
);
}
let assignments = optimiser.assignments.clone();
(palette_data, tile_data, assignments)
}
fn collapse_to_4bpp(tile_data: &[u8]) -> Vec<u8> {
tile_data
.chunks(2)
.map(|chunk| chunk[0] | (chunk[1] << 4))
.collect()
}
fn add_image_to_tile_data(
tile_data: &mut Vec<u8>,
image: &Image,
tile_size: TileSize,
optimiser: &&Palette16OptimisationResults,
) {
let tile_size = tile_size.to_size();
let tiles_x = image.width / tile_size;
let tiles_y = image.height / tile_size;
for y in 0..tiles_y {
for x in 0..tiles_x {
let palette_index = optimiser.assignments[y * tiles_x + x];
let palette = &optimiser.optimised_palettes[palette_index];
for inner_y in 0..tile_size / 8 {
for inner_x in 0..tile_size / 8 {
for j in inner_y * 8..inner_y * 8 + 8 {
for i in inner_x * 8..inner_x * 8 + 8 {
let colour = image.colour(x * tile_size + i, y * tile_size + j);
tile_data
.push(palette.colour_index(colour, optimiser.transparent_colour));
}
}
}
}
}
}
let tile_data = tile_data
.chunks(2)
.map(|chunk| chunk[0] | (chunk[1] << 4))
.collect();
let assignments = optimiser.assignments.clone();
(palette_data, tile_data, assignments)
}
fn flatten_group(expr: &Expr) -> &Expr {

33
agb-image-converter/src/rust_generator.rs
View file

@ -1,5 +1,5 @@
use crate::palette16::Palette16OptimisationResults;
use crate::TileSize;
use crate::{add_image_to_tile_data, collapse_to_4bpp, TileSize};
use crate::{image_loader::Image, ByteString};
use proc_macro2::TokenStream;
@ -34,36 +34,11 @@ pub(crate) fn generate_code(
}
});
let tile_size = tile_size.to_size();
let mut tile_data = Vec::new();
let tiles_x = image.width / tile_size;
let tiles_y = image.height / tile_size;
add_image_to_tile_data(&mut tile_data, image, tile_size, &results);
let mut tile_data = vec![];
for y in 0..tiles_y {
for x in 0..tiles_x {
let palette_index = results.assignments[y * tiles_x + x];
let palette = &results.optimised_palettes[palette_index];
for inner_y in 0..tile_size / 8 {
for inner_x in 0..tile_size / 8 {
for j in inner_y * 8..inner_y * 8 + 8 {
for i in inner_x * 8..inner_x * 8 + 8 {
let colour = image.colour(x * tile_size + i, y * tile_size + j);
tile_data
.push(palette.colour_index(colour, results.transparent_colour));
}
}
}
}
}
}
let tile_data: Vec<_> = tile_data
.chunks(2)
.map(|chunk| (chunk[1] << 4) | chunk[0])
.collect();
let tile_data = collapse_to_4bpp(&tile_data);
let data = ByteString(&tile_data);

2
agb/examples/animated_background.rs
View file

@ -3,7 +3,7 @@
use agb::{
display::{
tiled::{RegularBackgroundSize, TileFormat, TileSet, TileSetting},
tiled::{RegularBackgroundSize, TileFormat, TileSet, TileSetting, TiledMap},
Priority,
},
include_gfx,

2
agb/examples/chicken.rs
View file

@ -2,7 +2,7 @@
#![no_main]
use agb::{
display::tiled::{TileFormat, TileSet, TileSetting},
display::tiled::{TileFormat, TileSet, TileSetting, TiledMap},
display::{
object::{Object, ObjectController, Size, Sprite},
palette16::Palette16,

2
agb/examples/dynamic_tiles.rs
View file

@ -3,7 +3,7 @@
use agb::display::{
palette16::Palette16,
tiled::{RegularBackgroundSize, TileSetting},
tiled::{RegularBackgroundSize, TileSetting, TiledMap},
Priority,
};

2
agb/examples/stereo_sound.rs
View file

@ -3,7 +3,7 @@
use agb::{
display::{
tiled::{RegularBackgroundSize, RegularMap, TileSetting, VRamManager},
tiled::{RegularBackgroundSize, RegularMap, TileSetting, TiledMap, VRamManager},
Font, Priority,
},
include_font, include_wav,

2
agb/examples/text_render.rs
View file

@ -3,7 +3,7 @@
use agb::{
display::{
tiled::{RegularBackgroundSize, TileSetting},
tiled::{RegularBackgroundSize, TileSetting, TiledMap},
Font, Priority,
},
include_font,

3
agb/src/display/example_logo.rs
View file

@ -1,4 +1,4 @@
use super::tiled::{RegularMap, TileFormat, TileSet, TileSetting, VRamManager};
use super::tiled::{RegularMap, TileFormat, TileSet, TileSetting, TiledMap, VRamManager};
crate::include_gfx!("gfx/agb_logo.toml");
@ -21,6 +21,7 @@ pub fn display_logo(map: &mut RegularMap, vram: &mut VRamManager) {
map.commit(vram);
map.show();
}
#[cfg(test)]
mod tests {
use crate::display::{tiled::RegularBackgroundSize, Priority};

1
agb/src/display/font.rs
View file

@ -210,6 +210,7 @@ impl<'a> Drop for TextRenderer<'a> {
#[cfg(test)]
mod tests {
use super::*;
use crate::display::tiled::TiledMap;
const FONT: Font = crate::include_font!("examples/font/yoster.ttf", 12);
#[test_case]

35
agb/src/display/object.rs
View file

@ -18,7 +18,7 @@ use super::{Priority, DISPLAY_CONTROL};
use crate::agb_alloc::block_allocator::BlockAllocator;
use crate::agb_alloc::bump_allocator::StartEnd;
use crate::dma;
use crate::fixnum::Vector2D;
use crate::fixnum::{Num, Vector2D};
use crate::hash_map::HashMap;
use attributes::*;
@ -627,7 +627,7 @@ impl ObjectController {
unsafe {
(OBJECT_ATTRIBUTE_MEMORY as *mut u16)
.add((i as usize) * 4)
.add(i * 4)
.write_volatile(HIDDEN_VALUE);
}
@ -776,7 +776,7 @@ impl ObjectController {
attrs.a2.set_tile_index(sprite.sprite_location);
let shape_size = sprite.id.sprite().size.shape_size();
attrs.a2.set_palete_bank(sprite.palette_location as u8);
attrs.a2.set_palette_bank(sprite.palette_location as u8);
attrs.a0.set_shape(shape_size.0);
attrs.a1a.set_size(shape_size.1);
attrs.a1s.set_size(shape_size.1);
@ -877,7 +877,7 @@ impl<'a> Object<'a> {
object_inner
.attrs
.a2
.set_palete_bank(sprite.palette_location as u8);
.set_palette_bank(sprite.palette_location as u8);
object_inner.attrs.a0.set_shape(shape_size.0);
object_inner.attrs.a1a.set_size(shape_size.1);
object_inner.attrs.a1s.set_size(shape_size.1);
@ -1193,6 +1193,31 @@ enum ColourMode {
Eight,
}
/// The parameters used for the PPU's affine transformation function
/// that can apply to objects and background layers in modes 1 and 2.
/// This can be obtained from X/Y scale and rotation angle with
/// [`agb::syscall::affine_matrix`].
#[derive(Copy, Clone, Default, Debug, PartialEq, Eq)]
#[repr(C)]
pub struct AffineMatrixAttributes {
/// Adjustment made to *X* coordinate when drawing *horizontal* lines.
/// Also known as "dx".
/// Typically computed as `x_scale * cos(angle)`.
pub p_a: Num<i16, 8>,
/// Adjustment made to *X* coordinate along *vertical* lines.
/// Also known as "dmx".
/// Typically computed as `y_scale * sin(angle)`.
pub p_b: Num<i16, 8>,
/// Adjustment made to *Y* coordinate along *horizontal* lines.
/// Also known as "dy".
/// Typically computed as `-x_scale * sin(angle)`.
pub p_c: Num<i16, 8>,
/// Adjustment made to *Y* coordinate along *vertical* lines.
/// Also known as "dmy".
/// Typically computed as `y_scale * cos(angle)`.
pub p_d: Num<i16, 8>,
}
// this mod is not public, so the internal parts don't need documenting.
#[allow(dead_code)]
mod attributes {
@ -1232,7 +1257,7 @@ mod attributes {
pub(super) struct ObjectAttribute2 {
pub tile_index: B10,
pub priority: Priority,
pub palete_bank: B4,
pub palette_bank: B4,
}
}

5
agb/src/display/tiled/infinite_scrolled_map.rs
View file

@ -1,6 +1,9 @@
use alloc::boxed::Box;
use super::{BackgroundID, MapLoan, RegularMap, TileSet, TileSetting, VRamManager};
use super::{
BackgroundID, BackgroundSizePrivate, MapLoan, RegularMap, TileSet, TileSetting, TiledMap,
VRamManager,
};
use crate::{
display,

363
agb/src/display/tiled/map.rs
View file

@ -2,31 +2,184 @@ use core::cell::RefCell;
use core::ops::{Deref, DerefMut};
use crate::bitarray::Bitarray;
use crate::display::{Priority, DISPLAY_CONTROL};
use crate::display::{object::AffineMatrixAttributes, Priority, DISPLAY_CONTROL};
use crate::dma::dma_copy16;
use crate::fixnum::Vector2D;
use crate::fixnum::{Num, Number, Vector2D};
use crate::memory_mapped::MemoryMapped;
use super::{BackgroundID, RegularBackgroundSize, Tile, TileSet, TileSetting, VRamManager};
use super::{
AffineBackgroundSize, BackgroundID, BackgroundSize, BackgroundSizePrivate,
RegularBackgroundSize, Tile, TileFormat, TileIndex, TileSet, TileSetting, VRamManager,
};
use crate::syscall::BgAffineSetData;
use alloc::{vec, vec::Vec};
pub(super) trait TiledMapPrivateConst: TiledMapTypes {
type TileType: Into<TileIndex> + Copy + Default + Eq + PartialEq;
type AffineMatrix;
fn x_scroll(&self) -> Self::Position;
fn y_scroll(&self) -> Self::Position;
fn affine_matrix(&self) -> Self::AffineMatrix;
fn background_id(&self) -> usize;
fn screenblock(&self) -> usize;
fn priority(&self) -> Priority;
fn map_size(&self) -> Self::Size;
fn bg_x(&self) -> MemoryMapped<Self::Position>;
fn bg_y(&self) -> MemoryMapped<Self::Position>;
fn bg_affine_matrix(&self) -> MemoryMapped<Self::AffineMatrix>;
fn bg_control_register(&self) -> MemoryMapped<u16> {
unsafe { MemoryMapped::new(0x0400_0008 + 2 * self.background_id()) }
}
fn screenblock_memory(&self) -> *mut u16 {
(0x0600_0000 + 0x1000 * self.screenblock() as usize / 2) as *mut u16
}
}
trait TiledMapPrivate: TiledMapPrivateConst {
fn tiles_mut(&mut self) -> &mut [Self::TileType];
fn tiles_dirty(&mut self) -> &mut bool;
fn x_scroll_mut(&mut self) -> &mut Self::Position;
fn y_scroll_mut(&mut self) -> &mut Self::Position;
}
pub trait TiledMapTypes {
type Position: Number;
type Size: BackgroundSize + Copy;
}
pub trait TiledMap: TiledMapTypes {
fn clear(&mut self, vram: &mut VRamManager);
fn show(&mut self);
fn hide(&mut self);
fn commit(&mut self, vram: &mut VRamManager);
fn size(&self) -> Self::Size;
#[must_use]
fn scroll_pos(&self) -> Vector2D<Self::Position>;
fn set_scroll_pos(&mut self, pos: Vector2D<Self::Position>);
}
impl<T> TiledMap for T
where
T: TiledMapPrivateConst + TiledMapPrivate + TiledMapTypes,
T::Size: BackgroundSizePrivate,
{
fn clear(&mut self, vram: &mut VRamManager) {
for tile in self.tiles_mut() {
if *tile != Default::default() {
vram.remove_tile((*tile).into());
}
*tile = Default::default();
}
}
fn show(&mut self) {
let mode = DISPLAY_CONTROL.get();
let new_mode = mode | (1 << (self.background_id() + 0x08)) as u16;
DISPLAY_CONTROL.set(new_mode);
}
fn hide(&mut self) {
let mode = DISPLAY_CONTROL.get();
let new_mode = mode & !(1 << (self.background_id() + 0x08)) as u16;
DISPLAY_CONTROL.set(new_mode);
}
fn commit(&mut self, vram: &mut VRamManager) {
let new_bg_control_value = (self.priority() as u16)
| ((self.screenblock() as u16) << 8)
| (self.map_size().size_flag() << 14);
self.bg_control_register().set(new_bg_control_value);
self.bg_x().set(self.x_scroll());
self.bg_y().set(self.y_scroll());
self.bg_affine_matrix().set(self.affine_matrix());
let screenblock_memory = self.screenblock_memory();
let x: TileIndex = unsafe { *self.tiles_mut().get_unchecked(0) }.into();
let x = x.format().tile_size() / TileFormat::FourBpp.tile_size();
if *self.tiles_dirty() {
unsafe {
dma_copy16(
self.tiles_mut().as_ptr() as *const u16,
screenblock_memory,
self.map_size().num_tiles() / x,
);
}
}
vram.gc();
*self.tiles_dirty() = false;
}
fn size(&self) -> Self::Size {
self.map_size()
}
#[must_use]
fn scroll_pos(&self) -> Vector2D<Self::Position> {
(self.x_scroll(), self.y_scroll()).into()
}
fn set_scroll_pos(&mut self, pos: Vector2D<Self::Position>) {
*self.x_scroll_mut() = pos.x;
*self.y_scroll_mut() = pos.y;
}
}
pub struct RegularMap {
background_id: u8,
screenblock: u8,
priority: Priority,
size: RegularBackgroundSize,
x_scroll: u16,
y_scroll: u16,
priority: Priority,
tiles: Vec<Tile>,
tiles_dirty: bool,
size: RegularBackgroundSize,
}
pub const TRANSPARENT_TILE_INDEX: u16 = (1 << 10) - 1;
#[rustfmt::skip]
impl TiledMapPrivate for RegularMap {
fn tiles_mut(&mut self) -> &mut [Self::TileType] { &mut self.tiles }
fn tiles_dirty(&mut self) -> &mut bool { &mut self.tiles_dirty }
fn x_scroll_mut(&mut self) -> &mut Self::Position { &mut self.x_scroll }
fn y_scroll_mut(&mut self) -> &mut Self::Position { &mut self.y_scroll }
}
impl TiledMapTypes for RegularMap {
type Position = u16;
type Size = RegularBackgroundSize;
}
#[rustfmt::skip]
impl const TiledMapPrivateConst for RegularMap {
type TileType = Tile;
type AffineMatrix = ();
fn x_scroll(&self) -> Self::Position { self.x_scroll }
fn y_scroll(&self) -> Self::Position { self.y_scroll }
fn affine_matrix(&self) -> Self::AffineMatrix {}
fn background_id(&self) -> usize { self.background_id as usize }
fn screenblock(&self) -> usize { self.screenblock as usize }
fn priority(&self) -> Priority { self.priority }
fn map_size(&self) -> Self::Size { self.size }
fn bg_x(&self) -> MemoryMapped<Self::Position> {
unsafe { MemoryMapped::new(0x0400_0010 + 4 * self.background_id as usize) }
}
fn bg_y(&self) -> MemoryMapped<Self::Position> {
unsafe { MemoryMapped::new(0x0400_0012 + 4 * self.background_id as usize) }
}
fn bg_affine_matrix(&self) -> MemoryMapped<Self::AffineMatrix> {
unsafe { MemoryMapped::new(0) }
}
}
impl RegularMap {
pub(crate) fn new(
background_id: u8,
@ -36,16 +189,15 @@ impl RegularMap {
) -> Self {
Self {
background_id,
screenblock,
priority,
size,
x_scroll: 0,
y_scroll: 0,
priority,
tiles: vec![Default::default(); size.num_tiles()],
tiles_dirty: true,
size,
}
}
@ -56,11 +208,11 @@ impl RegularMap {
tileset: &TileSet<'_>,
tile_setting: TileSetting,
) {
let pos = self.size.gba_offset(pos);
let pos = self.map_size().gba_offset(pos);
let old_tile = self.tiles[pos];
let old_tile = self.tiles_mut()[pos];
if old_tile != Tile::default() {
vram.remove_tile(old_tile.tile_index());
vram.remove_tile(old_tile.into());
}
let tile_index = tile_setting.index();
@ -77,86 +229,129 @@ impl RegularMap {
return;
}
self.tiles[pos] = new_tile;
self.tiles_dirty = true;
self.tiles_mut()[pos] = new_tile;
*self.tiles_dirty() = true;
}
}
pub fn clear(&mut self, vram: &mut VRamManager) {
for tile in self.tiles.iter_mut() {
if *tile != Tile::default() {
vram.remove_tile(tile.tile_index());
}
pub struct AffineMap {
background_id: u8,
screenblock: u8,
priority: Priority,
size: AffineBackgroundSize,
*tile = Tile::default();
bg_center: Vector2D<Num<i32, 8>>,
transform: BgAffineSetData,
tiles: Vec<u8>,
tiles_dirty: bool,
}
#[rustfmt::skip]
impl TiledMapPrivate for AffineMap {
fn tiles_mut(&mut self) -> &mut [Self::TileType] { &mut self.tiles }
fn tiles_dirty(&mut self) -> &mut bool { &mut self.tiles_dirty }
fn x_scroll_mut(&mut self) -> &mut Self::Position { &mut self.transform.position.x }
fn y_scroll_mut(&mut self) -> &mut Self::Position { &mut self.transform.position.y }
}
impl TiledMapTypes for AffineMap {
type Position = Num<i32, 8>;
type Size = AffineBackgroundSize;
}
#[rustfmt::skip]
impl const TiledMapPrivateConst for AffineMap {
type TileType = u8;
type AffineMatrix = AffineMatrixAttributes;
fn x_scroll(&self) -> Self::Position { self.transform.position.x }
fn y_scroll(&self) -> Self::Position { self.transform.position.y }
fn affine_matrix(&self) -> Self::AffineMatrix { self.transform.matrix }
fn background_id(&self) -> usize { self.background_id as usize }
fn screenblock(&self) -> usize { self.screenblock as usize }
fn priority(&self) -> Priority { self.priority }
fn map_size(&self) -> Self::Size { self.size }
fn bg_x(&self) -> MemoryMapped<Self::Position> {
unsafe { MemoryMapped::new(0x0400_0008 + 0x10 * self.background_id()) }
}
fn bg_y(&self) -> MemoryMapped<Self::Position> {
unsafe { MemoryMapped::new(0x0400_000c + 0x10 * self.background_id()) }
}
fn bg_affine_matrix(&self) -> MemoryMapped<Self::AffineMatrix> {
unsafe { MemoryMapped::new(0x0400_0000 + 0x10 * self.background_id()) }
}
}
impl AffineMap {
pub(crate) fn new(
background_id: u8,
screenblock: u8,
priority: Priority,
size: AffineBackgroundSize,
bg_center: Vector2D<Num<i32, 8>>,
) -> Self {
Self {
background_id,
screenblock,
priority,
size,
bg_center,
transform: Default::default(),
tiles: vec![Default::default(); size.num_tiles()],
tiles_dirty: true,
}
}
pub fn show(&mut self) {
let mode = DISPLAY_CONTROL.get();
let new_mode = mode | (1 << (self.background_id + 0x08));
DISPLAY_CONTROL.set(new_mode);
}
pub fn set_tile(
&mut self,
vram: &mut VRamManager,
pos: Vector2D<u16>,
tileset: &TileSet<'_>,
tile_id: u8,
) {
let pos = self.map_size().gba_offset(pos);
pub fn hide(&mut self) {
let mode = DISPLAY_CONTROL.get();
let new_mode = mode & !(1 << (self.background_id + 0x08));
DISPLAY_CONTROL.set(new_mode);
}
pub fn commit(&mut self, vram: &mut VRamManager) {
let new_bg_control_value = (self.priority as u16)
| (u16::from(self.screenblock) << 8)
| (self.size.size_flag() << 14);
self.bg_control_register().set(new_bg_control_value);
self.bg_h_offset().set(self.x_scroll);
self.bg_v_offset().set(self.y_scroll);
let screenblock_memory = self.screenblock_memory();
if self.tiles_dirty {
unsafe {
dma_copy16(
self.tiles.as_ptr() as *const u16,
screenblock_memory,
self.size.num_tiles(),
);
}
let old_tile = self.tiles_mut()[pos];
if old_tile != 0 {
vram.remove_tile(old_tile.into());
}
vram.gc();
let tile_index = tile_id as u16;
self.tiles_dirty = false;
let new_tile = if tile_index != TRANSPARENT_TILE_INDEX {
let new_tile_idx = vram.add_tile(tileset, tile_index);
new_tile_idx.raw_index() as u8
} else {
0
};
if old_tile == new_tile {
// no need to mark as dirty if nothing changes
return;
}
self.tiles_mut()[pos] = new_tile;
*self.tiles_dirty() = true;
}
pub fn set_scroll_pos(&mut self, pos: Vector2D<u16>) {
self.x_scroll = pos.x;
self.y_scroll = pos.y;
pub fn set_transform_raw(&mut self, transform: BgAffineSetData) {
self.transform = transform;
}
#[must_use]
pub fn scroll_pos(&self) -> Vector2D<u16> {
(self.x_scroll, self.y_scroll).into()
}
pub(crate) fn size(&self) -> RegularBackgroundSize {
self.size
}
const fn bg_control_register(&self) -> MemoryMapped<u16> {
unsafe { MemoryMapped::new(0x0400_0008 + 2 * self.background_id as usize) }
}
const fn bg_h_offset(&self) -> MemoryMapped<u16> {
unsafe { MemoryMapped::new(0x0400_0010 + 4 * self.background_id as usize) }
}
const fn bg_v_offset(&self) -> MemoryMapped<u16> {
unsafe { MemoryMapped::new(0x0400_0012 + 4 * self.background_id as usize) }
}
const fn screenblock_memory(&self) -> *mut u16 {
(0x0600_0000 + 0x1000 * self.screenblock as usize / 2) as *mut u16
pub fn set_transform(
&mut self,
display_center: Vector2D<i16>,
scale: Vector2D<Num<i16, 8>>,
rotation: Num<u8, 8>,
) {
self.set_transform_raw(crate::syscall::bg_affine_matrix(
self.bg_center,
display_center,
scale,
rotation,
));
}
}
@ -165,7 +360,7 @@ pub struct MapLoan<'a, T> {
background_id: u8,
screenblock_id: u8,
screenblock_length: u8,
regular_map_list: &'a RefCell<Bitarray<1>>,
map_list: &'a RefCell<Bitarray<1>>,
screenblock_list: &'a RefCell<Bitarray<1>>,
}
@ -189,7 +384,7 @@ impl<'a, T> MapLoan<'a, T> {
background_id: u8,
screenblock_id: u8,
screenblock_length: u8,
regular_map_list: &'a RefCell<Bitarray<1>>,
map_list: &'a RefCell<Bitarray<1>>,
screenblock_list: &'a RefCell<Bitarray<1>>,
) -> Self {
MapLoan {
@ -197,7 +392,7 @@ impl<'a, T> MapLoan<'a, T> {
background_id,
screenblock_id,
screenblock_length,
regular_map_list,
map_list,
screenblock_list,
}
}
@ -210,7 +405,7 @@ impl<'a, T> MapLoan<'a, T> {
impl<'a, T> Drop for MapLoan<'a, T> {
fn drop(&mut self) {
self.regular_map_list
self.map_list
.borrow_mut()
.set(self.background_id as usize, false);

270
agb/src/display/tiled/mod.rs
View file

@ -1,28 +1,76 @@
mod infinite_scrolled_map;
mod map;
mod tiled0;
mod tiled1;
mod tiled2;
mod vram_manager;
use agb_fixnum::Vector2D;
use crate::bitarray::Bitarray;
use crate::display::Priority;
use agb_fixnum::{Num, Vector2D};
use core::cell::RefCell;
pub use infinite_scrolled_map::{InfiniteScrolledMap, PartialUpdateStatus};
pub use map::{MapLoan, RegularMap};
pub use map::{AffineMap, MapLoan, RegularMap, TiledMap};
pub use tiled0::Tiled0;
pub use tiled1::Tiled1;
pub use tiled2::Tiled2;
pub use vram_manager::{DynamicTile, TileFormat, TileIndex, TileSet, VRamManager};
// affine layers start at BG2
pub(crate) const AFFINE_BG_ID_OFFSET: usize = 2;
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
#[repr(u16)]
pub enum RegularBackgroundSize {
Background32x32,
Background64x32,
Background32x64,
Background64x64,
Background32x32 = 0,
Background64x32 = 1,
Background32x64 = 2,
Background64x64 = 3,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct BackgroundID(pub(crate) u8);
impl RegularBackgroundSize {
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
#[repr(u16)]
pub enum AffineBackgroundSize {
Background16x16 = 0,
Background32x32 = 1,
Background64x64 = 2,
Background128x128 = 3,
}
pub trait BackgroundSize {
#[must_use]
pub fn width(&self) -> u32 {
fn width(&self) -> u32;
#[must_use]
fn height(&self) -> u32;
}
pub(super) trait BackgroundSizePrivate: BackgroundSize + Sized {
fn size_flag(self) -> u16;
fn num_tiles(&self) -> usize {
(self.width() * self.height()) as usize
}
fn num_screen_blocks(&self) -> usize;
fn gba_offset(&self, pos: Vector2D<u16>) -> usize;
fn tile_pos_x(&self, x: i32) -> u16 {
((x as u32) & (self.width() - 1)) as u16
}
fn tile_pos_y(&self, y: i32) -> u16 {
((y as u32) & (self.height() - 1)) as u16
}
fn px_offset_x(&self, x: i32) -> u16 {
((x as u32) & (self.width() * 8 - 1)) as u16
}
fn px_offset_y(&self, y: i32) -> u16 {
((y as u32) & (self.height() * 8 - 1)) as u16
}
}
impl BackgroundSize for RegularBackgroundSize {
#[must_use]
fn width(&self) -> u32 {
match self {
RegularBackgroundSize::Background32x64 | RegularBackgroundSize::Background32x32 => 32,
RegularBackgroundSize::Background64x64 | RegularBackgroundSize::Background64x32 => 64,
@ -30,33 +78,26 @@ impl RegularBackgroundSize {
}
#[must_use]
pub fn height(&self) -> u32 {
fn height(&self) -> u32 {
match self {
RegularBackgroundSize::Background32x32 | RegularBackgroundSize::Background64x32 => 32,
RegularBackgroundSize::Background32x64 | RegularBackgroundSize::Background64x64 => 64,
}
}
}
pub(crate) fn size_flag(self) -> u16 {
match self {
RegularBackgroundSize::Background32x32 => 0,
RegularBackgroundSize::Background64x32 => 1,
RegularBackgroundSize::Background32x64 => 2,
RegularBackgroundSize::Background64x64 => 3,
}
impl BackgroundSizePrivate for RegularBackgroundSize {
fn size_flag(self) -> u16 {
self as u16
}
pub(crate) fn num_tiles(self) -> usize {
(self.width() * self.height()) as usize
}
pub(crate) fn num_screen_blocks(self) -> usize {
fn num_screen_blocks(&self) -> usize {
self.num_tiles() / (32 * 32)
}
// This is hilariously complicated due to how the GBA stores the background screenblocks.
// See https://www.coranac.com/tonc/text/regbg.htm#sec-map for an explanation
pub(crate) fn gba_offset(self, pos: Vector2D<u16>) -> usize {
fn gba_offset(&self, pos: Vector2D<u16>) -> usize {
let x_mod = pos.x & (self.width() as u16 - 1);
let y_mod = pos.y & (self.height() as u16 - 1);
@ -66,21 +107,43 @@ impl RegularBackgroundSize {
pos as usize
}
}
pub(crate) fn tile_pos_x(self, x: i32) -> u16 {
((x as u32) & (self.width() - 1)) as u16
impl BackgroundSize for AffineBackgroundSize {
#[must_use]
fn width(&self) -> u32 {
match self {
AffineBackgroundSize::Background16x16 => 16,
AffineBackgroundSize::Background32x32 => 32,
AffineBackgroundSize::Background64x64 => 64,
AffineBackgroundSize::Background128x128 => 128,
}
}
pub(crate) fn tile_pos_y(self, y: i32) -> u16 {
((y as u32) & (self.height() - 1)) as u16
#[must_use]
fn height(&self) -> u32 {
self.width()
}
}
impl BackgroundSizePrivate for AffineBackgroundSize {
fn size_flag(self) -> u16 {
self as u16
}
pub(crate) fn px_offset_x(self, x: i32) -> u16 {
((x as u32) & (self.width() * 8 - 1)) as u16
fn num_screen_blocks(&self) -> usize {
// technically 16x16 and 32x32 only use the first 1/8 and 1/2 of the SB, respectively
1.max(self.num_tiles() / 2048)
}
pub(crate) fn px_offset_y(self, y: i32) -> u16 {
((y as u32) & (self.height() * 8 - 1)) as u16
// Affine modes don't do the convoluted staggered block layout
fn gba_offset(&self, pos: Vector2D<u16>) -> usize {
let x_mod = pos.x & (self.width() as u16 - 1);
let y_mod = pos.y & (self.height() as u16 - 1);
let pos = x_mod + (self.width() as u16 * y_mod);
pos as usize
}
}
@ -90,11 +153,11 @@ struct Tile(u16);
impl Tile {
fn new(idx: TileIndex, setting: TileSetting) -> Self {
Self(idx.index() | setting.setting())
Self(idx.raw_index() | setting.setting())
}
fn tile_index(self) -> TileIndex {
TileIndex::new(self.0 as usize & ((1 << 10) - 1))
TileIndex::new(self.0 as usize & ((1 << 10) - 1), TileFormat::FourBpp)
}
}
@ -126,6 +189,149 @@ impl TileSetting {
}
}
pub(self) fn find_screenblock_gap(screenblocks: &Bitarray<1>, gap: usize) -> usize {
let mut candidate = 0;
'outer: while candidate < 16 - gap {
let starting_point = candidate;
for attempt in starting_point..(starting_point + gap) {
if screenblocks.get(attempt) == Some(true) {
candidate = attempt + 1;
continue 'outer;
}
}
return candidate;
}
panic!(
"Failed to find screenblock gap of at least {} elements",
gap
);
}
pub(self) trait TiledMode {
const REGULAR_BACKGROUNDS: usize;
const AFFINE_BACKGROUNDS: usize;
fn screenblocks(&self) -> &RefCell<Bitarray<1>>;
fn regular(&self) -> &RefCell<Bitarray<1>>;
fn affine(&self) -> &RefCell<Bitarray<1>>;
}
pub trait RegularTiledMode {
fn regular_background(
&self,
priority: Priority,
size: RegularBackgroundSize,
) -> MapLoan<'_, RegularMap>;
}
pub trait AffineTiledMode {
fn affine_background(
&self,
priority: Priority,
size: AffineBackgroundSize,
) -> MapLoan<'_, AffineMap>;
}
// withoutboats: https://internals.rust-lang.org/t/const-generics-where-restrictions/12742/6
pub struct If<const B: bool>;
pub trait True {}
impl True for If<true> {}
impl<T> RegularTiledMode for T
where
T: TiledMode,
If<{ T::REGULAR_BACKGROUNDS > 0 }>: True,
{
fn regular_background(
&self,
priority: Priority,
size: RegularBackgroundSize,
) -> MapLoan<'_, RegularMap> {
let mut regular = self.regular().borrow_mut();
let new_background = regular.first_zero().unwrap();
if new_background >= T::REGULAR_BACKGROUNDS {
panic!(
"can only have {} active regular backgrounds",
T::REGULAR_BACKGROUNDS
);
}
let num_screenblocks = size.num_screen_blocks();
let mut screenblocks = self.screenblocks().borrow_mut();
let screenblock = find_screenblock_gap(&screenblocks, num_screenblocks);
for id in screenblock..(screenblock + num_screenblocks) {
screenblocks.set(id, true);
}
let bg = RegularMap::new(new_background as u8, screenblock as u8 + 16, priority, size);
regular.set(new_background, true);
MapLoan::new(
bg,
new_background as u8,
screenblock as u8,
num_screenblocks as u8,
self.regular(),
self.screenblocks(),
)
}
}
impl<T> AffineTiledMode for T
where
T: TiledMode,
If<{ T::AFFINE_BACKGROUNDS > 0 }>: True,
{
fn affine_background(
&self,
priority: Priority,
size: AffineBackgroundSize,
) -> MapLoan<'_, AffineMap> {
let mut affine = self.affine().borrow_mut();
let new_background = affine.first_zero().unwrap();
if new_background >= T::AFFINE_BACKGROUNDS + AFFINE_BG_ID_OFFSET {
panic!(
"can only have {} active affine backgrounds",
T::AFFINE_BACKGROUNDS
);
}
let num_screenblocks = size.num_screen_blocks();
let mut screenblocks = self.screenblocks().borrow_mut();
let screenblock = find_screenblock_gap(&screenblocks, num_screenblocks);
for id in screenblock..(screenblock + num_screenblocks) {
screenblocks.set(id, true);
}
let center_dim = Num::new(size.width() as i32 * 8 / 2);
let default_bg_center = (center_dim, center_dim).into();
let bg = AffineMap::new(
new_background as u8,
screenblock as u8 + 16,
priority,
size,
default_bg_center,
);
affine.set(new_background, true);
MapLoan::new(
bg,
new_background as u8,
screenblock as u8,
num_screenblocks as u8,
self.affine(),
self.screenblocks(),
)
}
}
#[cfg(test)]
mod test {
use super::*;

58
agb/src/display/tiled/tiled0.rs
View file

@ -1,12 +1,11 @@
use core::cell::RefCell;
use super::{MapLoan, RegularBackgroundSize, RegularMap, RegularTiledMode, TiledMode};
use crate::{
bitarray::Bitarray,
display::{set_graphics_mode, DisplayMode, Priority},
};
use super::{MapLoan, RegularBackgroundSize, RegularMap};
pub struct Tiled0 {
regular: RefCell<Bitarray<1>>,
screenblocks: RefCell<Bitarray<1>>,
@ -27,52 +26,23 @@ impl Tiled0 {
priority: Priority,
size: RegularBackgroundSize,
) -> MapLoan<'_, RegularMap> {
let mut regular = self.regular.borrow_mut();
let new_background = regular.first_zero().unwrap();
if new_background >= 4 {
panic!("can only have 4 active backgrounds");
}
let num_screenblocks = size.num_screen_blocks();
let mut screenblocks = self.screenblocks.borrow_mut();
let screenblock = find_screenblock_gap(&screenblocks, num_screenblocks);
for id in screenblock..(screenblock + num_screenblocks) {
screenblocks.set(id, true);
}
let bg = RegularMap::new(new_background as u8, screenblock as u8 + 16, priority, size);
regular.set(new_background, true);
MapLoan::new(
bg,
new_background as u8,
screenblock as u8,
num_screenblocks as u8,
&self.regular,
&self.screenblocks,
)
self.regular_background(priority, size)
}
}
fn find_screenblock_gap(screenblocks: &Bitarray<1>, gap: usize) -> usize {
let mut candidate = 0;
impl TiledMode for Tiled0 {
const REGULAR_BACKGROUNDS: usize = 4;
const AFFINE_BACKGROUNDS: usize = 0;
'outer: while candidate < 16 - gap {
let starting_point = candidate;
for attempt in starting_point..(starting_point + gap) {
if screenblocks.get(attempt) == Some(true) {
candidate = attempt + 1;
continue 'outer;
}
}
return candidate;
fn screenblocks(&self) -> &RefCell<Bitarray<1>> {
&self.screenblocks
}
panic!(
"Failed to find screenblock gap of at least {} elements",
gap
);
fn regular(&self) -> &RefCell<Bitarray<1>> {
&self.regular
}
fn affine(&self) -> &RefCell<Bitarray<1>> {
unimplemented!()
}
}

47
agb/src/display/tiled/tiled1.rs Normal file
View file

@ -0,0 +1,47 @@
use core::cell::RefCell;
use super::TiledMode;
use crate::{
bitarray::Bitarray,
display::{set_graphics_mode, tiled::AFFINE_BG_ID_OFFSET, DisplayMode},
};
pub struct Tiled1 {
regular: RefCell<Bitarray<1>>,
affine: RefCell<Bitarray<1>>,
screenblocks: RefCell<Bitarray<1>>,
}
impl Tiled1 {
pub(crate) unsafe fn new() -> Self {
set_graphics_mode(DisplayMode::Tiled1);
let affine = RefCell::new(Bitarray::new());
for i in 0..AFFINE_BG_ID_OFFSET {
affine.borrow_mut().set(i, true);
}
Self {
regular: Default::default(),
affine,
screenblocks: Default::default(),
}
}
}
impl TiledMode for Tiled1 {
const REGULAR_BACKGROUNDS: usize = 2;
const AFFINE_BACKGROUNDS: usize = 1;
fn screenblocks(&self) -> &RefCell<Bitarray<1>> {
&self.screenblocks
}
fn regular(&self) -> &RefCell<Bitarray<1>> {
&self.regular
}
fn affine(&self) -> &RefCell<Bitarray<1>> {
&self.affine
}
}

53
agb/src/display/tiled/tiled2.rs Normal file
View file

@ -0,0 +1,53 @@
use core::cell::RefCell;
use super::{AffineBackgroundSize, AffineMap, AffineTiledMode, MapLoan, TiledMode};
use crate::{
bitarray::Bitarray,
display::{set_graphics_mode, tiled::AFFINE_BG_ID_OFFSET, DisplayMode, Priority},
};
pub struct Tiled2 {
affine: RefCell<Bitarray<1>>,
screenblocks: RefCell<Bitarray<1>>,
}
impl Tiled2 {
pub(crate) unsafe fn new() -> Self {
set_graphics_mode(DisplayMode::Tiled2);
let affine = RefCell::new(Bitarray::new());
for i in 0..AFFINE_BG_ID_OFFSET {
affine.borrow_mut().set(i, true);
}
Self {
affine,
screenblocks: Default::default(),
}
}
pub fn background(
&self,
priority: Priority,
size: AffineBackgroundSize,
) -> MapLoan<'_, AffineMap> {
self.affine_background(priority, size)
}
}
impl TiledMode for Tiled2 {
const REGULAR_BACKGROUNDS: usize = 0;
const AFFINE_BACKGROUNDS: usize = 2;
fn screenblocks(&self) -> &RefCell<Bitarray<1>> {
&self.screenblocks
}
fn regular(&self) -> &RefCell<Bitarray<1>> {
unimplemented!()
}
fn affine(&self) -> &RefCell<Bitarray<1>> {
&self.affine
}
}

131
agb/src/display/tiled/vram_manager.rs
View file

@ -2,6 +2,7 @@ use core::{alloc::Layout, ptr::NonNull};
use alloc::{slice, vec::Vec};
use crate::display::tiled::Tile;
use crate::{
agb_alloc::{block_allocator::BlockAllocator, bump_allocator::StartEnd},
display::palette16,
@ -22,18 +23,22 @@ static TILE_ALLOCATOR: BlockAllocator = unsafe {
})
};
const TILE_LAYOUT: Layout = unsafe { Layout::from_size_align_unchecked(8 * 8 / 2, 8 * 8 / 2) };
const fn layout_of(format: TileFormat) -> Layout {
unsafe { Layout::from_size_align_unchecked(format.tile_size(), format.tile_size()) }
}
#[derive(Clone, Copy, Debug)]
pub enum TileFormat {
FourBpp,
EightBpp,
}
impl TileFormat {
/// Returns the size of the tile in bytes
fn tile_size(self) -> usize {
pub(crate) const fn tile_size(self) -> usize {
match self {
TileFormat::FourBpp => 8 * 8 / 2,
TileFormat::EightBpp => 8 * 8,
}
}
}
@ -55,15 +60,50 @@ impl<'a> TileSet<'a> {
}
#[derive(Debug, Clone, Copy)]
pub struct TileIndex(u16);
pub enum TileIndex {
FourBpp(u16),
EightBpp(u8),
}
impl TileIndex {
pub(crate) const fn new(index: usize) -> Self {
Self(index as u16)
pub(crate) const fn new(index: usize, format: TileFormat) -> Self {
match format {
TileFormat::FourBpp => Self::FourBpp(index as u16),
TileFormat::EightBpp => Self::EightBpp(index as u8),
}
}
pub(crate) const fn index(self) -> u16 {
self.0
pub(crate) const fn raw_index(self) -> u16 {
match self {
TileIndex::FourBpp(x) => x,
TileIndex::EightBpp(x) => x as u16,
}
}
pub(crate) const fn format(self) -> TileFormat {
match self {
TileIndex::FourBpp(_) => TileFormat::FourBpp,
TileIndex::EightBpp(_) => TileFormat::EightBpp,
}
}
fn refcount_key(self) -> usize {
match self {
TileIndex::FourBpp(x) => x as usize,
TileIndex::EightBpp(x) => x as usize * 2,
}
}
}
impl From<Tile> for TileIndex {
fn from(tile: Tile) -> Self {
tile.tile_index()
}
}
impl From<u8> for TileIndex {
fn from(index: u8) -> TileIndex {
TileIndex::new(usize::from(index), TileFormat::EightBpp)
}
}
@ -159,7 +199,7 @@ impl DynamicTile<'_> {
#[must_use]
pub fn tile_index(&self) -> u16 {
let difference = self.tile_data.as_ptr() as usize - TILE_RAM_START;
(difference / (8 * 8 / 2)) as u16
(difference / TileFormat::FourBpp.tile_size()) as u16
}
}
@ -182,24 +222,27 @@ impl VRamManager {
}
}
fn index_from_reference(reference: TileReference) -> usize {
fn index_from_reference(reference: TileReference, format: TileFormat) -> TileIndex {
let difference = reference.0.as_ptr() as usize - TILE_RAM_START;
difference / (8 * 8 / 2)
TileIndex::new(difference / format.tile_size(), format)
}
fn reference_from_index(index: TileIndex) -> TileReference {
let ptr = (index.index() * (8 * 8 / 2)) as usize + TILE_RAM_START;
let ptr = (index.raw_index() as usize * index.format().tile_size()) + TILE_RAM_START;
TileReference(NonNull::new(ptr as *mut _).unwrap())
}
#[must_use]
pub fn new_dynamic_tile<'a>(&mut self) -> DynamicTile<'a> {
// TODO: format param?
let tile_format = TileFormat::FourBpp;
let new_reference: NonNull<u32> =
unsafe { TILE_ALLOCATOR.alloc(TILE_LAYOUT) }.unwrap().cast();
let new_reference: NonNull<u32> = unsafe { TILE_ALLOCATOR.alloc(layout_of(tile_format)) }
.unwrap()
.cast();
let tile_reference = TileReference(new_reference);
let index = Self::index_from_reference(tile_reference);
let index = Self::index_from_reference(tile_reference, tile_format);
let key = index.refcount_key();
let tiles = unsafe {
slice::from_raw_parts_mut(TILE_RAM_START as *mut u8, 1024 * tile_format.tile_size())
@ -208,23 +251,21 @@ impl VRamManager {
let tile_set = TileSet::new(tiles, tile_format);
self.tile_set_to_vram.insert(
TileInTileSetReference::new(&tile_set, index as u16),
TileInTileSetReference::new(&tile_set, index.raw_index()),
tile_reference,
);
self.reference_counts.resize(
self.reference_counts.len().max(index + 1),
Default::default(),
);
self.reference_counts[index] =
TileReferenceCount::new(TileInTileSetReference::new(&tile_set, index as u16));
self.reference_counts
.resize(self.reference_counts.len().max(key + 1), Default::default());
self.reference_counts[key] =
TileReferenceCount::new(TileInTileSetReference::new(&tile_set, index.raw_index()));
DynamicTile {
tile_data: unsafe {
slice::from_raw_parts_mut(
tiles
.as_mut_ptr()
.add((index * tile_format.tile_size()) as usize)
.add(index.raw_index() as usize * tile_format.tile_size())
.cast(),
tile_format.tile_size() / core::mem::size_of::<u32>(),
)
@ -238,8 +279,9 @@ impl VRamManager {
let pointer = NonNull::new(dynamic_tile.tile_data.as_mut_ptr() as *mut _).unwrap();
let tile_reference = TileReference(pointer);
let tile_index = Self::index_from_reference(tile_reference);
self.remove_tile(TileIndex::new(tile_index));
// TODO: dynamic_tile.format?
let tile_index = Self::index_from_reference(tile_reference, TileFormat::FourBpp);
self.remove_tile(tile_index);
}
pub(crate) fn add_tile(&mut self, tile_set: &TileSet<'_>, tile: u16) -> TileIndex {
@ -248,37 +290,39 @@ impl VRamManager {
.get(&TileInTileSetReference::new(tile_set, tile));
if let Some(reference) = reference {
let index = Self::index_from_reference(*reference);
self.reference_counts[index].increment_reference_count();
return TileIndex::new(index);
let tile_index = Self::index_from_reference(*reference, tile_set.format);
let key = tile_index.refcount_key();
self.reference_counts[key].increment_reference_count();
return tile_index;
}
let new_reference: NonNull<u32> =
unsafe { TILE_ALLOCATOR.alloc(TILE_LAYOUT) }.unwrap().cast();
unsafe { TILE_ALLOCATOR.alloc(layout_of(tile_set.format)) }
.unwrap()
.cast();
let tile_reference = TileReference(new_reference);
self.copy_tile_to_location(tile_set, tile, tile_reference);
let index = Self::index_from_reference(tile_reference);
let index = Self::index_from_reference(tile_reference, tile_set.format);
let key = index.refcount_key();
self.tile_set_to_vram
.insert(TileInTileSetReference::new(tile_set, tile), tile_reference);
self.reference_counts.resize(
self.reference_counts.len().max(index + 1),
Default::default(),
);
self.reference_counts
.resize(self.reference_counts.len().max(key + 1), Default::default());
self.reference_counts[index] =
self.reference_counts[key] =
TileReferenceCount::new(TileInTileSetReference::new(tile_set, tile));
TileIndex::new(index)
index
}
pub(crate) fn remove_tile(&mut self, tile_index: TileIndex) {
let index = tile_index.index() as usize;
let key = tile_index.refcount_key();
let new_reference_count = self.reference_counts[index].decrement_reference_count();
let new_reference_count = self.reference_counts[key].decrement_reference_count();
if new_reference_count != 0 {
return;
@ -289,23 +333,26 @@ impl VRamManager {
pub(crate) fn gc(&mut self) {
for tile_index in self.indices_to_gc.drain(..) {
let index = tile_index.index() as usize;
if self.reference_counts[index].current_count() > 0 {
let key = tile_index.refcount_key() as usize;
if self.reference_counts[key].current_count() > 0 {
continue; // it has since been added back
}
let tile_reference = Self::reference_from_index(tile_index);
unsafe {
TILE_ALLOCATOR.dealloc_no_normalise(tile_reference.0.cast().as_ptr(), TILE_LAYOUT);
TILE_ALLOCATOR.dealloc_no_normalise(
tile_reference.0.cast().as_ptr(),
layout_of(tile_index.format()),
);
}
let tile_ref = self.reference_counts[index]
let tile_ref = self.reference_counts[key]
.tile_in_tile_set
.as_ref()
.unwrap();
self.tile_set_to_vram.remove(tile_ref);
self.reference_counts[index].clear();
self.reference_counts[key].clear();
}
}

12
agb/src/display/video.rs
View file

@ -1,7 +1,7 @@
use super::{
bitmap3::Bitmap3,
bitmap4::Bitmap4,
tiled::{Tiled0, VRamManager},
tiled::{Tiled0, Tiled1, Tiled2, VRamManager},
};
/// The video struct controls access to the video hardware.
@ -26,4 +26,14 @@ impl Video {
pub fn tiled0(&mut self) -> (Tiled0, VRamManager) {
(unsafe { Tiled0::new() }, VRamManager::new())
}
/// Tiled 1 mode provides 2 regular tiled backgrounds and 1 affine tiled background
pub fn tiled1(&mut self) -> (Tiled1, VRamManager) {
(unsafe { Tiled1::new() }, VRamManager::new())
}
/// Tiled 2 mode provides 2 affine tiled backgrounds
pub fn tiled2(&mut self) -> (Tiled2, VRamManager) {
(unsafe { Tiled2::new() }, VRamManager::new())
}
}

5
agb/src/lib.rs
View file

@ -13,6 +13,9 @@
#![feature(alloc_error_handler)]
#![feature(allocator_api)]
#![feature(asm_const)]
#![feature(const_trait_impl)]
#![allow(incomplete_features)] // generic_const_exprs, used for bg mode traits
#![feature(generic_const_exprs)]
#![warn(clippy::all)]
#![deny(clippy::must_use_candidate)]
#![deny(clippy::trivially_copy_pass_by_ref)]
@ -80,7 +83,7 @@
/// #
/// use agb::{
/// display::{
/// tiled::{RegularBackgroundSize, TileFormat, TileSet, TileSetting, Tiled0, VRamManager},
/// tiled::{RegularBackgroundSize, TileFormat, TileSet, TileSetting, Tiled0, TiledMap, VRamManager},
/// Priority,
/// },
/// include_gfx,

4
agb/src/memory_mapped.rs
View file

@ -16,7 +16,9 @@ impl<T> MemoryMapped<T> {
}
pub fn set(&self, val: T) {
unsafe { self.address.write_volatile(val) }
if core::mem::size_of::<T>() != 0 {
unsafe { self.address.write_volatile(val) }
}
}
}

145
agb/src/syscall.rs
View file

@ -1,11 +1,14 @@
use agb_fixnum::Vector2D;
use core::arch::asm;
use core::mem::MaybeUninit;
// use crate::display::object::AffineMatrixAttributes;
use crate::display::object::AffineMatrixAttributes;
use crate::fixnum::Num;
#[allow(non_snake_case)]
const fn swi_map(thumb_id: u32) -> u32 {
if cfg!(target_feature="thumb-mode") {
if cfg!(target_feature = "thumb-mode") {
thumb_id
} else {
thumb_id << 16
@ -136,55 +139,103 @@ pub fn arc_tan2(x: i16, y: i32) -> i16 {
result
}
// pub fn affine_matrix(
// x_scale: Num<i16, 8>,
// y_scale: Num<i16, 8>,
// rotation: u8,
// ) -> AffineMatrixAttributes {
// let mut result = AffineMatrixAttributes {
// p_a: 0,
// p_b: 0,
// p_c: 0,
// p_d: 0,
// };
#[repr(C)]
pub struct BgAffineSetData {
pub matrix: AffineMatrixAttributes,
pub position: Vector2D<Num<i32, 8>>,
}
impl Default for BgAffineSetData {
fn default() -> Self {
Self {
matrix: AffineMatrixAttributes::default(),
position: (0, 0).into(),
}
}
}
// #[allow(dead_code)]
// #[repr(C, packed)]
// struct Input {
// x_scale: i16,
// y_scale: i16,
// rotation: u16,
// }
/// `rotation` is in revolutions.
#[must_use]
pub fn bg_affine_matrix(
bg_center: Vector2D<Num<i32, 8>>,
display_center: Vector2D<i16>,
scale: Vector2D<Num<i16, 8>>,
rotation: Num<u8, 8>,
) -> BgAffineSetData {
#[repr(C, packed)]
struct Input {
bg_center: Vector2D<Num<i32, 8>>,
display_center: Vector2D<i16>,
scale: Vector2D<Num<i16, 8>>,
rotation: u16,
}
// let input = Input {
// y_scale: x_scale.to_raw(),
// x_scale: y_scale.to_raw(),
// rotation: rotation as u16,
// };
let input = Input {
bg_center,
display_center,
scale,
rotation: u16::from(rotation.to_raw()) << 8,
};
// unsafe {
// asm!("swi 0x0F",
// in("r0") &input as *const Input as usize,
// in("r1") &mut result as *mut AffineMatrixAttributes as usize,
// in("r2") 1,
// in("r3") 2,
// )
// }
let mut output = MaybeUninit::uninit();
// result
// }
unsafe {
asm!(
"swi {SWI}",
SWI = const { swi_map(0x0E) },
in("r0") &input as *const Input,
in("r1") output.as_mut_ptr(),
in("r2") 1,
);
}
// #[cfg(test)]
// mod tests {
// use super::*;
unsafe { output.assume_init() }
}
// #[test_case]
// fn affine(_gba: &mut crate::Gba) {
// // expect identity matrix
// let one: Num<i16, 8> = 1.into();
/// `rotation` is in revolutions.
#[must_use]
pub fn obj_affine_matrix(
scale: Vector2D<Num<i16, 8>>,
rotation: Num<u8, 8>,
) -> AffineMatrixAttributes {
#[allow(dead_code)]
#[repr(C, packed)]
struct Input {
scale: Vector2D<Num<i16, 8>>,
rotation: u16,
}
// let aff = affine_matrix(one, one, 0);
// assert_eq!(aff.p_a, one.to_raw());
// assert_eq!(aff.p_d, one.to_raw());
// }
// }
let input = Input {
scale,
rotation: u16::from(rotation.to_raw()) << 8,
};
let mut output = MaybeUninit::uninit();
unsafe {
asm!(
"swi {SWI}",
SWI = const { swi_map(0x0F) },
in("r0") &input as *const Input,
in("r1") output.as_mut_ptr(),
in("r2") 1,
in("r3") 2,
);
}
unsafe { output.assume_init() }
}
#[cfg(test)]
mod tests {
use super::*;
#[test_case]
fn affine(_gba: &mut crate::Gba) {
// expect identity matrix
let one: Num<i16, 8> = 1.into();
let aff = obj_affine_matrix((one, one).into(), Num::default());
assert_eq!(aff.p_a, one);
assert_eq!(aff.p_d, one);
}
}

2
examples/hyperspace-roll/src/background.rs
View file

@ -1,5 +1,5 @@
use agb::{
display::tiled::{RegularMap, TileFormat, TileSet, TileSetting, VRamManager},
display::tiled::{RegularMap, TileFormat, TileSet, TileSetting, TiledMap, VRamManager},
include_gfx, rng,
};

2
examples/hyperspace-roll/src/battle.rs
View file

@ -2,7 +2,7 @@ use crate::sfx::Sfx;
use crate::{
graphics::SELECT_BOX, level_generation::generate_attack, Agb, EnemyAttackType, Face, PlayerDice,
};
use agb::display::tiled::RegularMap;
use agb::display::tiled::{RegularMap, TiledMap};
use agb::{hash_map::HashMap, input::Button};
use alloc::vec;
use alloc::vec::Vec;

2
examples/hyperspace-roll/src/customise.rs
View file

@ -2,7 +2,7 @@ use agb::{
display::{
object::{Object, ObjectController},
palette16::Palette16,
tiled::{RegularMap, TileSet, TileSetting},
tiled::{RegularMap, TileSet, TileSetting, TiledMap},
HEIGHT, WIDTH,
},
include_gfx,

2
examples/hyperspace-roll/src/main.rs
View file

@ -12,7 +12,7 @@
use agb::display;
use agb::display::object::ObjectController;
use agb::display::tiled::VRamManager;
use agb::display::tiled::{TiledMap, VRamManager};
use agb::display::Priority;
use agb::interrupt::VBlank;

2
examples/the-hat-chooses-the-wizard/src/level_display.rs
View file

@ -1,5 +1,5 @@
use agb::display::{
tiled::{RegularMap, TileSet, TileSetting, VRamManager},
tiled::{RegularMap, TileSet, TileSetting, TiledMap, VRamManager},
HEIGHT, WIDTH,
};

2
examples/the-hat-chooses-the-wizard/src/main.rs
View file

@ -11,7 +11,7 @@ use agb::{
object::{Graphics, Object, ObjectController, Tag, TagMap},
tiled::{
InfiniteScrolledMap, PartialUpdateStatus, RegularBackgroundSize, TileFormat, TileSet,
TileSetting, VRamManager,
TileSetting, TiledMap, VRamManager,
},
Priority, HEIGHT, WIDTH,
},

2
examples/the-hat-chooses-the-wizard/src/splash_screen.rs
View file

@ -1,6 +1,6 @@
use super::sfx::MusicBox;
use agb::{
display::tiled::{RegularMap, TileFormat, TileSet, TileSetting, VRamManager},
display::tiled::{RegularMap, TiledMap, TileFormat, TileSet, TileSetting, VRamManager},
sound::mixer::Mixer,
};