mirror of
https://github.com/italicsjenga/agb.git
synced 2024-12-23 08:11:33 +11:00
move display modes to own file
This commit is contained in:
Corwin Kuiper
parent
9b0bdb17e5
commit
cc48605f4a
192
src/display.rs
192
src/display.rs
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@ -1,192 +0,0 @@
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use crate::{
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memory_mapped::{MemoryMapped, MemoryMapped1DArray, MemoryMapped2DArray},
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single::{Single, SingleToken},
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};
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use bitflags::bitflags;
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use core::convert::TryInto;
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const DISPLAY_CONTROL: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0000) };
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const DISPLAY_STATUS: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0004) };
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const VCOUNT: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0006) };
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const PALETTE_BACKGROUND: MemoryMapped1DArray<u16, 256> =
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unsafe { MemoryMapped1DArray::new(0x0500_0000) };
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const PALETTE_SPRITE: MemoryMapped1DArray<u16, 256> =
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unsafe { MemoryMapped1DArray::new(0x0500_0200) };
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const BITMAP_MODE_3: MemoryMapped2DArray<u16, { WIDTH as usize }, { HEIGHT as usize }> =
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unsafe { MemoryMapped2DArray::new(0x600_0000) };
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const BITMAP_PAGE_FRONT_MODE_4: MemoryMapped2DArray<
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u16,
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{ (WIDTH / 2) as usize },
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{ HEIGHT as usize },
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> = unsafe { MemoryMapped2DArray::new(0x600_0000) };
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const BITMAP_PAGE_BACK_MODE_4: MemoryMapped2DArray<
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u16,
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{ (WIDTH / 2) as usize },
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{ HEIGHT as usize },
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> = unsafe { MemoryMapped2DArray::new(0x600_A000) };
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pub const WIDTH: i32 = 240;
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pub const HEIGHT: i32 = 160;
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pub enum DisplayMode {
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Tiled0 = 0,
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Tiled1 = 1,
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Tiled2 = 2,
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Bitmap3 = 3,
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Bitmap4 = 4,
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Bitmap5 = 5,
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}
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pub enum Page {
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Front = 0,
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Back = 1,
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}
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bitflags! {
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pub struct GraphicsSettings: u16 {
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const PAGE_SELECT = 1 << 0x4;
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const OAM_HBLANK = 1 << 0x5;
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const SPRITE1_D = 1 << 0x6;
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const SCREEN_BLANK = 1 << 0x7;
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const LAYER_BG0 = 1 << 0x8;
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const LAYER_BG1 = 1 << 0x9;
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const LAYER_BG2 = 1 << 0xA;
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const LAYER_BG3 = 1 << 0xB;
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const LAYER_OBJ = 1 << 0xC;
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const WINDOW0 = 1 << 0xD;
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const WINDOW1 = 1 << 0xE;
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const WINDOW_OBJECT = 1 << 0xF;
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}
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}
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pub struct Display {
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in_mode: Single,
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}
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impl Display {
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pub(crate) const unsafe fn new() -> Self {
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Display {
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in_mode: Single::new(),
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}
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}
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pub fn bitmap3(&self) -> Bitmap3 {
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Bitmap3::new(
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self.in_mode
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.take()
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.expect("Cannot create new mode as mode already taken"),
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)
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}
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pub fn bitmap4(&self) -> Bitmap4 {
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Bitmap4::new(
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self.in_mode
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.take()
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.expect("Cannot create new mode as mode already taken"),
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)
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}
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}
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pub struct Bitmap3<'a> {
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_in_mode: SingleToken<'a>,
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}
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impl<'a> Bitmap3<'a> {
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fn new(in_mode: SingleToken<'a>) -> Self {
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set_graphics_mode(DisplayMode::Bitmap3);
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set_graphics_settings(GraphicsSettings::LAYER_BG2);
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Bitmap3 { _in_mode: in_mode }
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}
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pub fn draw_point(&self, x: i32, y: i32, colour: u16) {
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let x = x.try_into().unwrap();
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let y = y.try_into().unwrap();
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BITMAP_MODE_3.set(x, y, colour)
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}
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}
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pub struct Bitmap4<'a> {
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_in_mode: SingleToken<'a>,
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}
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impl<'a> Bitmap4<'a> {
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fn new(in_mode: SingleToken<'a>) -> Self {
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set_graphics_mode(DisplayMode::Bitmap4);
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set_graphics_settings(GraphicsSettings::LAYER_BG2);
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Bitmap4 { _in_mode: in_mode }
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}
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pub fn draw_point_page(&self, x: i32, y: i32, colour: u8, page: Page) {
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let addr = match page {
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Page::Front => BITMAP_PAGE_FRONT_MODE_4,
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Page::Back => BITMAP_PAGE_BACK_MODE_4,
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};
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let x_in_screen = (x / 2) as usize;
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let y_in_screen = y as usize;
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let c = addr.get(x_in_screen, y_in_screen);
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if x & 0b1 != 0 {
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addr.set(x_in_screen, y_in_screen, c | (colour as u16) << 8);
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} else {
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addr.set(x_in_screen, y_in_screen, c | colour as u16);
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}
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}
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pub fn draw_point(&self, x: i32, y: i32, colour: u8) {
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let disp = DISPLAY_CONTROL.get();
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let page = if disp & GraphicsSettings::PAGE_SELECT.bits() != 0 {
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Page::Back
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} else {
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Page::Front
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};
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self.draw_point_page(x, y, colour, page)
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}
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pub fn set_palette_entry(&self, entry: u32, colour: u16) {
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PALETTE_BACKGROUND.set(entry as usize, colour);
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}
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pub fn flip_page(&self) {
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let disp = DISPLAY_CONTROL.get();
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let swapped = disp ^ GraphicsSettings::PAGE_SELECT.bits();
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DISPLAY_CONTROL.set(swapped);
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}
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}
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fn set_graphics_mode(mode: DisplayMode) {
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let current = DISPLAY_CONTROL.get();
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let current = current & (!0b111);
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let s = current | (mode as u16 & 0b111);
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DISPLAY_CONTROL.set(s);
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}
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pub fn set_graphics_settings(settings: GraphicsSettings) {
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let current = DISPLAY_CONTROL.get();
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// preserve display mode
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let current = current & 0b111;
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let s = settings.bits() | current;
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DISPLAY_CONTROL.set(s);
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}
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#[allow(non_snake_case)]
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pub fn busy_wait_for_VBlank() {
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while VCOUNT.get() >= 160 {}
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while VCOUNT.get() < 160 {}
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}
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#[allow(non_snake_case)]
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pub fn enable_VBlank_interrupt() {
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let status = DISPLAY_STATUS.get() | (1 << 3);
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DISPLAY_STATUS.set(status);
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}
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#[allow(non_snake_case)]
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pub fn wait_for_VBlank() {
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crate::syscall::wait_for_VBlank();
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}
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27
src/display/bitmap3.rs
Normal file
27
src/display/bitmap3.rs
Normal file
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@ -0,0 +1,27 @@
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use crate::{memory_mapped::MemoryMapped2DArray, single::SingleToken};
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use super::{
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set_graphics_mode, set_graphics_settings, DisplayMode, GraphicsSettings, HEIGHT, WIDTH,
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};
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use core::convert::TryInto;
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const BITMAP_MODE_3: MemoryMapped2DArray<u16, { WIDTH as usize }, { HEIGHT as usize }> =
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unsafe { MemoryMapped2DArray::new(0x600_0000) };
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pub struct Bitmap3<'a> {
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_in_mode: SingleToken<'a>,
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}
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impl<'a> Bitmap3<'a> {
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pub(crate) fn new(in_mode: SingleToken<'a>) -> Self {
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set_graphics_mode(DisplayMode::Bitmap3);
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set_graphics_settings(GraphicsSettings::LAYER_BG2);
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Bitmap3 { _in_mode: in_mode }
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}
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pub fn draw_point(&self, x: i32, y: i32, colour: u16) {
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let x = x.try_into().unwrap();
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let y = y.try_into().unwrap();
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BITMAP_MODE_3.set(x, y, colour)
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}
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}
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78
src/display/bitmap4.rs
Normal file
78
src/display/bitmap4.rs
Normal file
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@ -0,0 +1,78 @@
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use crate::{
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memory_mapped::{MemoryMapped1DArray, MemoryMapped2DArray},
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single::SingleToken,
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};
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use super::{
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set_graphics_mode, set_graphics_settings, DisplayMode, GraphicsSettings, DISPLAY_CONTROL,
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HEIGHT, WIDTH,
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};
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const BITMAP_PAGE_FRONT_MODE_4: MemoryMapped2DArray<
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u16,
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{ (WIDTH / 2) as usize },
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{ HEIGHT as usize },
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> = unsafe { MemoryMapped2DArray::new(0x600_0000) };
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const BITMAP_PAGE_BACK_MODE_4: MemoryMapped2DArray<
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u16,
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{ (WIDTH / 2) as usize },
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{ HEIGHT as usize },
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> = unsafe { MemoryMapped2DArray::new(0x600_A000) };
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const PALETTE_BACKGROUND: MemoryMapped1DArray<u16, 256> =
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unsafe { MemoryMapped1DArray::new(0x0500_0000) };
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pub enum Page {
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Front = 0,
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Back = 1,
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}
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pub struct Bitmap4<'a> {
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_in_mode: SingleToken<'a>,
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}
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impl<'a> Bitmap4<'a> {
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pub(crate) fn new(in_mode: SingleToken<'a>) -> Self {
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set_graphics_mode(DisplayMode::Bitmap4);
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set_graphics_settings(GraphicsSettings::LAYER_BG2);
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Bitmap4 { _in_mode: in_mode }
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}
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pub fn draw_point_page(&self, x: i32, y: i32, colour: u8, page: Page) {
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let addr = match page {
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Page::Front => BITMAP_PAGE_FRONT_MODE_4,
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Page::Back => BITMAP_PAGE_BACK_MODE_4,
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};
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let x_in_screen = (x / 2) as usize;
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let y_in_screen = y as usize;
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let c = addr.get(x_in_screen, y_in_screen);
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if x & 0b1 != 0 {
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addr.set(x_in_screen, y_in_screen, c | (colour as u16) << 8);
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} else {
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addr.set(x_in_screen, y_in_screen, c | colour as u16);
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}
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}
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pub fn draw_point(&self, x: i32, y: i32, colour: u8) {
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let disp = DISPLAY_CONTROL.get();
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let page = if disp & GraphicsSettings::PAGE_SELECT.bits() != 0 {
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Page::Back
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} else {
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Page::Front
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};
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self.draw_point_page(x, y, colour, page)
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}
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pub fn set_palette_entry(&self, entry: u32, colour: u16) {
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PALETTE_BACKGROUND.set(entry as usize, colour);
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}
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pub fn flip_page(&self) {
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let disp = DISPLAY_CONTROL.get();
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let swapped = disp ^ GraphicsSettings::PAGE_SELECT.bits();
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DISPLAY_CONTROL.set(swapped);
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}
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}
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102
src/display/mod.rs
Normal file
102
src/display/mod.rs
Normal file
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@ -0,0 +1,102 @@
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use crate::{memory_mapped::MemoryMapped, single::Single};
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use bitflags::bitflags;
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use bitmap3::Bitmap3;
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use bitmap4::Bitmap4;
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mod bitmap3;
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mod bitmap4;
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const DISPLAY_CONTROL: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0000) };
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const DISPLAY_STATUS: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0004) };
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const VCOUNT: MemoryMapped<u16> = unsafe { MemoryMapped::new(0x0400_0006) };
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bitflags! {
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pub struct GraphicsSettings: u16 {
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const PAGE_SELECT = 1 << 0x4;
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const OAM_HBLANK = 1 << 0x5;
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const SPRITE1_D = 1 << 0x6;
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const SCREEN_BLANK = 1 << 0x7;
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const LAYER_BG0 = 1 << 0x8;
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const LAYER_BG1 = 1 << 0x9;
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const LAYER_BG2 = 1 << 0xA;
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const LAYER_BG3 = 1 << 0xB;
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const LAYER_OBJ = 1 << 0xC;
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const WINDOW0 = 1 << 0xD;
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const WINDOW1 = 1 << 0xE;
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const WINDOW_OBJECT = 1 << 0xF;
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}
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}
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pub const WIDTH: i32 = 240;
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pub const HEIGHT: i32 = 160;
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pub enum DisplayMode {
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Tiled0 = 0,
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Tiled1 = 1,
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Tiled2 = 2,
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Bitmap3 = 3,
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Bitmap4 = 4,
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Bitmap5 = 5,
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}
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pub struct Display {
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in_mode: Single,
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}
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impl Display {
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pub(crate) const unsafe fn new() -> Self {
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Display {
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in_mode: Single::new(),
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}
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}
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pub fn bitmap3(&self) -> Bitmap3 {
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Bitmap3::new(
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self.in_mode
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.take()
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.expect("Cannot create new mode as mode already taken"),
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)
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}
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pub fn bitmap4(&self) -> Bitmap4 {
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bitmap4::Bitmap4::new(
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self.in_mode
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.take()
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.expect("Cannot create new mode as mode already taken"),
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)
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}
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}
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fn set_graphics_mode(mode: DisplayMode) {
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let current = DISPLAY_CONTROL.get();
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let current = current & (!0b111);
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let s = current | (mode as u16 & 0b111);
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DISPLAY_CONTROL.set(s);
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}
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pub fn set_graphics_settings(settings: GraphicsSettings) {
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let current = DISPLAY_CONTROL.get();
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// preserve display mode
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let current = current & 0b111;
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let s = settings.bits() | current;
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DISPLAY_CONTROL.set(s);
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}
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#[allow(non_snake_case)]
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pub fn busy_wait_for_VBlank() {
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while VCOUNT.get() >= 160 {}
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while VCOUNT.get() < 160 {}
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}
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#[allow(non_snake_case)]
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pub fn enable_VBlank_interrupt() {
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let status = DISPLAY_STATUS.get() | (1 << 3);
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DISPLAY_STATUS.set(status);
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}
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#[allow(non_snake_case)]
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pub fn wait_for_VBlank() {
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crate::syscall::wait_for_VBlank();
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}
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