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lcd - A few steps towards handling tilemaps

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madmaurice 2023-09-19 23:21:15 +02:00
parent da91ec4d1b
commit 19c09901fb
3 changed files with 14 additions and 7 deletions
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15
lcd/lcd.cpp
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@ -18,11 +18,13 @@ LCD::LCD(Cpu& cpu)
{ {
tiles[i].create(8,8,sf::Color::Red); tiles[i].create(8,8,sf::Color::Red);
} }
for(int l = 0; l < 2; l++)
std::memset(&tilemap[l], 0, 32*32);
} }
void LCD::generate_tile(int idx) void LCD::generate_tile(int idx)
{ {
std::cerr << "Updating tile " << idx << std::endl;
for(int y = 0, addr = idx << 4; y < 8; y++, addr+=2) for(int y = 0, addr = idx << 4; y < 8; y++, addr+=2)
{ {
u8 a = vram_raw[addr]; u8 a = vram_raw[addr];
@ -30,7 +32,6 @@ void LCD::generate_tile(int idx)
for(int x = 7; x >= 0; x--, a>>=1, b>>=1) for(int x = 7; x >= 0; x--, a>>=1, b>>=1)
{ {
tiles[idx].setPixel(x,y,bgp.getColorByIdx( ((a&0x1) << 1) | (b&0x1))); tiles[idx].setPixel(x,y,bgp.getColorByIdx( ((a&0x1) << 1) | (b&0x1)));
//tiles[idx].setPixel(x,y,sf::Color::Red);
} }
} }
} }
@ -146,14 +147,16 @@ u8 LCD::read8(u16 addr) {
void LCD::render(sf::RenderTarget& target) void LCD::render(sf::RenderTarget& target)
{ {
cpu.signalInterrupt(INT_VBlank); cpu.signalInterrupt(INT_VBlank);
for(int row = 0; row < 16; row++) for(int row = 0; row < 32; row++)
for(int col = 0; col < 12; col++) for(int col = 0; col < 32; col++)
{ {
unsigned int idx = row*12+col; unsigned int map_idx = row*32+col;
sf::Texture txt; sf::Texture txt;
sf::Sprite spr; sf::Sprite spr;
txt.loadFromImage(tiles[idx]); unsigned int tile_idx = tilemap[0][map_idx];
txt.loadFromImage(tiles[tile_idx]);
spr.setTexture(txt,true); spr.setTexture(txt,true);
spr.setPosition(col*8,row*8); spr.setPosition(col*8,row*8);
target.draw(spr); target.draw(spr);

1
lcd/lcd.h
View file

@ -28,6 +28,7 @@ private:
// Graphics // Graphics
sf::RenderTexture screenbuffer; sf::RenderTexture screenbuffer;
sf::Image tiles[384]; sf::Image tiles[384];
unsigned int tilemap[2][32*32];
// Emulated device // Emulated device
u8 regLY; u8 regLY;

5
lcd/lcdtest.cpp
View file

@ -5,6 +5,7 @@
#include <memory/bus.h> #include <memory/bus.h>
#include <memory/register.h> #include <memory/register.h>
#include <lcd/lcd.h> #include <lcd/lcd.h>
#include <timer/timer.h>
#include <fstream> #include <fstream>
#include <thread> #include <thread>
#include <chrono> #include <chrono>
@ -26,7 +27,7 @@ int main(int argc, char** argv)
return 2; return 2;
} }
sf::RenderWindow window(sf::VideoMode(12*8,16*8), "VGBC tiles view"); sf::RenderWindow window(sf::VideoMode(256,256), "VGBC BG view");
RAM wram1(0x1000); RAM wram1(0x1000);
RAM wram2(0x1000); RAM wram2(0x1000);
@ -39,6 +40,7 @@ int main(int argc, char** argv)
Cpu cpu(&b); Cpu cpu(&b);
LCD lcd(cpu); LCD lcd(cpu);
TimerDiv timer;
b.map_device(0x0000, 0x7FFF, &mbc1); b.map_device(0x0000, 0x7FFF, &mbc1);
b.map_device(0x8000, 0x9FFF, &lcd, 0x8000); b.map_device(0x8000, 0x9FFF, &lcd, 0x8000);
@ -47,6 +49,7 @@ int main(int argc, char** argv)
b.map_device(0xD000, 0xDFFF, &wram2); b.map_device(0xD000, 0xDFFF, &wram2);
b.map_device(0xE000, 0xFDFF, &wram1); b.map_device(0xE000, 0xFDFF, &wram1);
b.map_device(0xFE00, 0xFE9F, &oam); b.map_device(0xFE00, 0xFE9F, &oam);
b.map_device(0xFF04, 0xFF07, &timer);
b.map_device(0xFF40, 0xFF4F, &lcd, 0xFF40); b.map_device(0xFF40, 0xFF4F, &lcd, 0xFF40);
b.map_device(0xFF80, 0xFFFE, &hram); b.map_device(0xFF80, 0xFFFE, &hram);