FranLMSP/rmg-001
1
0
Fork 0
mirror of https://github.com/FranLMSP/rmg-001.git synced 2026-08-05 17:50:04 -04:00
Code Issues Packages Projects Releases Wiki Activity

Optimize framebuffer render

Browse Source
This commit is contained in:
Franco Colmenarez
2021-11-03 11:59:48 -05:00
parent 659f602b2a
commit 60fd55abca
4 changed files with 29 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/ppu.rs
+17 -13
View File
@@ -116,15 +116,15 @@ impl PPU {
self.cycles.0 += cycles.0;
}
pub fn do_cycles(&mut self, bus: &mut Bus, cycles: Cycles) {
pub fn do_cycles(&mut self, bus: &mut Bus, cycles: Cycles, frame_buffer: &mut [u8]) {
let mut count = 0;
while count < cycles.0 {
self.cycle(bus);
self.cycle(bus, frame_buffer);
count += 1;
}
}
pub fn cycle(&mut self, bus: &mut Bus) {
pub fn cycle(&mut self, bus: &mut Bus, frame_buffer: &mut [u8]) {
if !PPU::get_lcd_control(bus, LCDControl::LCDEnable) {
self.increment_cycles(Cycles(1));
return;
@@ -139,7 +139,7 @@ impl PPU {
}
} else if self.cycles.0 == 80 + 1 {
// Mode 3 drawing pixel line. This could also last 289 cycles
self.draw_line(bus);
self.draw_line(bus, frame_buffer);
PPU::set_lcd_status(bus, LCDStatus::ModeFlag(LCDStatusModeFlag::TransferringToLCD), true);
} else if self.cycles.0 == 80 + 172 + 1 {
// Mode 0 Horizontal blank. This could last 87 or 204 cycles depending on the mode 3
@@ -190,7 +190,7 @@ impl PPU {
}
fn set_lcd_y(bus: &mut Bus, val: u8) {
bus.write(LCD_Y_ADDRESS, val);
bus.force_write(LCD_Y_ADDRESS, val);
}
fn get_scroll_x(bus: &Bus) -> u8 {
@@ -300,7 +300,7 @@ impl PPU {
Some(pixels[(x as usize).rem_euclid(8)])
}
fn draw_line(&mut self, bus: &Bus) {
fn draw_line(&mut self, bus: &Bus, frame_buffer: &mut [u8]) {
let palette = bus.read(BACKGROUND_PALETTE_ADDRESS);
let lcd_y = PPU::get_lcd_y(bus);
if lcd_y as u32 >= LCD_HEIGHT {
@@ -321,10 +321,18 @@ impl PPU {
let bg_pixels = PPU::get_byte_pixels(tile_byte_1, tile_byte_2, palette);
for pixel in bg_pixels {
let idx = lcd_x as usize + (lcd_y as usize * LCD_WIDTH as usize);
self.rgba_frame[idx] = PPU::get_rgba(pixel);
let idx = (lcd_x as usize + (lcd_y as usize * LCD_WIDTH as usize)) * 4;
let rgba = PPU::get_rgba(pixel);
frame_buffer[idx] = rgba[0];
frame_buffer[idx + 1] = rgba[1];
frame_buffer[idx + 2] = rgba[2];
frame_buffer[idx + 3] = rgba[3];
if let Some(window_pixel) = PPU::get_window_pixel(lcd_x, bus) {
self.rgba_frame[idx] = PPU::get_rgba(window_pixel);
let rgba = PPU::get_rgba(pixel);
frame_buffer[idx] = rgba[0];
frame_buffer[idx + 1] = rgba[1];
frame_buffer[idx + 2] = rgba[2];
frame_buffer[idx + 3] = rgba[3];
}
lcd_x += 1;
@@ -373,8 +381,4 @@ impl PPU {
PPU::get_pixel(PPU::get_palette((byte1 & 0b01) | ((byte2 << 1) & 0b10), palette)),
]
}
pub fn get_rgba_frame(&self) -> &[[u8; 4]; FRAME_BUFFER_LENGTH as usize] {
&self.rgba_frame
}
}