nickorlow/yayacemu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

chip8 draws in st7920 format now

Browse source
This commit is contained in:
Nicholas Orlowsky 2024-04-06 21:36:24 -05:00
parent 9804af7796
commit fdd6553f11
Signed by: nickorlow
GPG key ID: 838827D8C4611687
4 changed files with 47 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

14
yayacemu.cpp
View file

@ -10,8 +10,8 @@
#include <iostream>
#include <memory.h>
#define SCREEN_WIDTH 64
#define SCREEN_HEIGHT 32
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define EMULATION_HZ 2000
FILE *rom_file;
@ -41,10 +41,14 @@ void set_beep(const svBit beep) {
SDL_SetTextureColorMod(texture, 255, 255, 255);
}
void draw_screen(const svLogic *vram) {
void draw_screen(const svLogicVecVal *vram) {
uint32_t *screen = (uint32_t *)malloc(SCREEN_WIDTH * SCREEN_HEIGHT * 32);
for (int i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++) {
screen[i] = vram[i] == 1 ? 0xFFFFFFFF : 0x00000000;
for (int i = 0; i < 1024; i++) {
uint8_t line_byte = (uint8_t) vram[i].aval;
for (int j = 0; j < 8; j++) {
uint8_t pixel_val = (line_byte >> (7-j)) & 1;
screen[(i*8) + j] = pixel_val == 1 ? 0xFFFFFFFF : 0x00000000;
}
}
SDL_UpdateTexture(texture, NULL, screen, sizeof(screen[0]) * SCREEN_WIDTH);
SDL_RenderClear(renderer);