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ppu main window drawing

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This commit is contained in:
Daniel Bauer
2020-01-04 15:43:22 +01:00
parent ae080895a5
commit 01de48883c
3 changed files with 27 additions and 15 deletions
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2
src/main.rs
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@@ -44,7 +44,7 @@ fn main() -> Result<(), Error> {
let cartridge = Cartridge::new(cartridge)?;
nes.insert_cartrige(cartridge);
nes.cpu.find_pc_addr(&nes.bus);
nes.cpu.regs.pc = 0xC000;
// nes.cpu.regs.pc = 0xC000;
// disassemble instructions
let disasm = Disasm::disassemble(&nes.bus, 0xC000, 0xFFFF).unwrap();

16
src/nes/bus.rs
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@@ -106,10 +106,10 @@ impl Memory for Bus {
// Ram is 3x mirrored after 0x07ff
return self.ram[(addr & RAM_PHYS_RANGE[1]) as usize]
}
if PPU_ADDR_RANGE[0] <= addr && addr <= PPU_ADDR_RANGE[1] {
// PPU memory is mirrored after 0x2007 to 0x3fff
return self.ram[(addr & PPU_PHYS_RANGE[1]) as usize]
}
// if PPU_ADDR_RANGE[0] <= addr && addr <= PPU_ADDR_RANGE[1] {
// // PPU memory is mirrored after 0x2007 to 0x3fff
// return self.ram[(addr & PPU_PHYS_RANGE[1]) as usize]
// }
0x0000 // generic response
}
@@ -123,10 +123,10 @@ impl Memory for Bus {
// Ram is 3x mirrored after 07ff
self.ram[(addr & RAM_PHYS_RANGE[1]) as usize] = data
}
if PPU_ADDR_RANGE[0] <= addr && addr <= PPU_ADDR_RANGE[1] {
// PPU memory is mirrored after 0x2007 to 0x3fff
self.ram[(addr & PPU_PHYS_RANGE[1]) as usize] = data
}
// if PPU_ADDR_RANGE[0] <= addr && addr <= PPU_ADDR_RANGE[1] {
// // PPU memory is mirrored after 0x2007 to 0x3fff
// self.ram[(addr & PPU_PHYS_RANGE[1]) as usize] = data
// }
}
}

24
src/nes/ppu.rs
View File

@@ -4,25 +4,37 @@ use image::{ImageBuffer, Rgba};
use rand::Rng;
pub struct PPU {
pub cycle: i16,
pub scanline: i16,
pub canvas_main: ImageBuffer<Rgba<u8>, Vec<u8>>
}
impl PPU {
pub fn new() -> Self {
PPU {
cycle: 0,
scanline: 0,
canvas_main: ImageBuffer::new(256, 240),
}
}
}
impl Clockable for PPU {
fn clock<T: Memory>(&mut self, bus: &mut T) {
// update random pixel
fn clock<T: Memory>(&mut self, _bus: &mut T) {
// random noise
let mut rng = rand::thread_rng();
let x = rng.gen_range(0, self.canvas_main.width());
let y = rng.gen_range(0, self.canvas_main.height());
let rgba = Rgba([rng.gen_range(0,255), rng.gen_range(0,255), rng.gen_range(0,255), 255]);
self.canvas_main.put_pixel(x, y, rgba);
let x = rng.gen_range(0, 256);
let y = rng.gen_range(0, 240);
let color = rng.gen::<bool>();
let px = if color {
Rgba([255, 255, 255, 255])
} else {
Rgba([0, 0, 0, 255])
};
self.canvas_main.put_pixel(x as u32, y as u32, px);
}
}