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Constants for colors
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parent
0957a79f15
commit
854b25b253
76
src/ppu.rs
76
src/ppu.rs
@ -36,7 +36,42 @@ enum Pixel {
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}
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#[derive(Debug, Copy, Clone)]
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struct ColorPalette(u8, u8, u8, u8);
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struct RGBA(u8, u8, u8, u8);
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#[derive(Debug, Copy, Clone)]
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struct ColorPalette {
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white: RGBA,
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light: RGBA,
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dark: RGBA,
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black: RGBA,
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}
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const BACKGROUND_COLORS: ColorPalette = ColorPalette {
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white: RGBA(0x83, 0xE6, 0xCD, 0),
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light: RGBA(0x66, 0xAD, 0xC6, 0),
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dark: RGBA(0x4F, 0x53, 0xAB, 0),
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black: RGBA(0x3E, 0x24, 0x69, 0),
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};
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const WINDOW_COLORS: ColorPalette = ColorPalette {
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white: RGBA(0x83, 0xE6, 0xCD, 0),
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light: RGBA(0x66, 0xAD, 0xC6, 0),
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dark: RGBA(0x4F, 0x53, 0xAB, 0),
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black: RGBA(0x3E, 0x24, 0x69, 0),
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};
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const SPRITE_0_COLORS: ColorPalette = ColorPalette {
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white: RGBA(0x83, 0xE6, 0xCD, 0),
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light: RGBA(0x66, 0xAD, 0xC6, 0),
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dark: RGBA(0x4F, 0x53, 0xAB, 0),
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black: RGBA(0x3E, 0x24, 0x69, 0),
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};
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const SPRITE_1_COLORS: ColorPalette = ColorPalette {
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white: RGBA(0x83, 0xE6, 0xCD, 0),
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light: RGBA(0x66, 0xAD, 0xC6, 0),
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dark: RGBA(0x4F, 0x53, 0xAB, 0),
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black: RGBA(0x3E, 0x24, 0x69, 0),
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};
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#[derive(Debug, Copy, Clone)]
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pub enum LCDControl {
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@ -94,6 +129,7 @@ struct Sprite {
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y: u8,
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tile_number: u8,
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palette: u8,
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palette_zero: bool,
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x_flip: bool,
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y_flip: bool,
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over_bg: bool,
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@ -106,7 +142,7 @@ impl Sprite {
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self.x
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}
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pub fn get_pixel(&mut self, lcd_x: u8, lcd_y: u8, bus: &Bus, last_bg_index: u8) -> Option<Pixel> {
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pub fn get_pixel(&mut self, lcd_x: u8, lcd_y: u8, bus: &Bus, last_bg_index: u8) -> Option<(Pixel, bool)> {
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if lcd_x < self.x.saturating_sub(8) || lcd_x >= self.x {
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return None;
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}
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@ -161,7 +197,7 @@ impl Sprite {
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return None;
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}
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Some(PPU::get_pixel(PPU::get_palette(bit_pixel, self.palette)))
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Some((PPU::get_pixel(PPU::get_palette(bit_pixel, self.palette)), self.palette_zero))
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}
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}
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@ -336,14 +372,16 @@ impl PPU {
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let tile_number = bus.read(addr + 2);
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let attributes = bus.read(addr + 3);
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let palette_zero = !get_bit(attributes, BitIndex::I4);
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self.sprite_buffer.push(Sprite {
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x,
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y,
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tile_number,
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palette_zero,
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is_long: long_sprites,
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palette: match get_bit(attributes, BitIndex::I4) {
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true => palette_1,
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false => palette_0,
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palette: match palette_zero {
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true => palette_0,
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false => palette_1,
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},
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x_flip: get_bit(attributes, BitIndex::I5),
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y_flip: get_bit(attributes, BitIndex::I6),
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@ -356,7 +394,7 @@ impl PPU {
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self.sprite_buffer.sort_by(|a, b| a.x().cmp(&b.x()));
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}
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fn find_sprite_pixel(&mut self, lcd_x: u8, bus: &Bus) -> Option<Pixel> {
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fn find_sprite_pixel(&mut self, lcd_x: u8, bus: &Bus) -> Option<(Pixel, bool)> {
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let lcd_y = self.lcd_y;
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for sprite in &mut self.sprite_buffer {
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if let Some(pixel) = sprite.get_pixel(lcd_x, lcd_y, bus, self.last_bg_index) {
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@ -528,23 +566,29 @@ impl PPU {
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let idx = (lcd_x as usize + (lcd_y as usize * LCD_WIDTH as usize)) * 4;
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if let Some(background_pixel) = self.get_background_pixel(lcd_x, bus) {
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let rgba = PPU::get_rgba(background_pixel);
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let rgba = PPU::get_rgba(background_pixel, BACKGROUND_COLORS);
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frame_buffer[idx] = rgba[0];
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frame_buffer[idx + 1] = rgba[1];
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frame_buffer[idx + 2] = rgba[2];
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frame_buffer[idx + 3] = rgba[3];
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}
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if let Some(window_pixel) = self.get_window_pixel(lcd_x, bus) {
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window_drawn = true;
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let rgba = PPU::get_rgba(window_pixel);
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let rgba = PPU::get_rgba(window_pixel, WINDOW_COLORS);
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frame_buffer[idx] = rgba[0];
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frame_buffer[idx + 1] = rgba[1];
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frame_buffer[idx + 2] = rgba[2];
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frame_buffer[idx + 3] = rgba[3];
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}
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if let Some(sprite_pixel) = self.find_sprite_pixel(lcd_x, bus) {
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let rgba = PPU::get_rgba(sprite_pixel);
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if let Some((sprite_pixel, palette_zero)) = self.find_sprite_pixel(lcd_x, bus) {
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let rgba = PPU::get_rgba(sprite_pixel, match palette_zero {
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true => SPRITE_0_COLORS,
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false => SPRITE_1_COLORS,
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});
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frame_buffer[idx] = rgba[0];
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frame_buffer[idx + 1] = rgba[1];
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frame_buffer[idx + 2] = rgba[2];
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frame_buffer[idx + 3] = rgba[3];
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}
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lcd_x += 1;
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@ -574,12 +618,12 @@ impl PPU {
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}
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}
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fn get_rgba(pixel: Pixel) -> [u8; 4] {
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fn get_rgba(pixel: Pixel, colors: ColorPalette) -> [u8; 4] {
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match pixel {
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Pixel::White => [255, 255, 255, 0],
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Pixel::Light => [192, 192, 192, 0],
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Pixel::Dark => [81, 81, 81, 0],
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Pixel::Black => [0, 0, 0, 0],
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Pixel::White => [colors.white.0, colors.white.1, colors.white.2, colors.white.3],
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Pixel::Light => [colors.light.0, colors.light.1, colors.light.2, colors.light.3],
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Pixel::Dark => [ colors.dark.0, colors.dark.1, colors.dark.2, colors.dark.3],
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Pixel::Black => [colors.black.0, colors.black.1, colors.black.2, colors.black.3],
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}
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}
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@ -27,7 +27,7 @@ pub fn create_pixels(width: u32, height: u32, window: &Window) -> Pixels {
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},
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..wgpu::DeviceDescriptor::default()
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})
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.enable_vsync(false)
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.enable_vsync(true)
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.build()
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.unwrap()
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}
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