1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
#include <stdlib.h>
#include <stdbool.h>
#include <math.h>
#include <SDL2/SDL.h>
#include "ppu/ppu.h"
#include "ppusim/sim.h"
SDL_Window *g_hh_window = NULL;
SDL_Renderer *g_hh_renderer = NULL;
static void pixel(SDL_Renderer* r, unsigned px, unsigned py, unsigned cr, unsigned cg, unsigned cb) {
SDL_SetRenderDrawColor(r, cr, cg, cb, 255);
SDL_RenderFillRect(r, &(SDL_Rect) {
.x = px * HH_PPUSIM_UPSCALE_FACTOR,
.y = py * HH_PPUSIM_UPSCALE_FACTOR,
.w = HH_PPUSIM_UPSCALE_FACTOR,
.h = HH_PPUSIM_UPSCALE_FACTOR
});
}
void hh_ppu_init() {
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
g_hh_window = SDL_CreateWindow("ppusim", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, HH_PPU_SCREEN_WIDTH * HH_PPUSIM_UPSCALE_FACTOR, HH_PPU_SCREEN_HEIGHT * HH_PPUSIM_UPSCALE_FACTOR, SDL_WINDOW_SHOWN);
g_hh_renderer = SDL_CreateRenderer(g_hh_window, -1, SDL_RENDERER_ACCELERATED);
SDL_Event e;
unsigned long frame = 0;
while (true) {
uint32_t start = SDL_GetTicks();
frame++;
while (SDL_PollEvent(&e)) if (e.type == SDL_QUIT) exit(0);
SDL_RenderClear(g_hh_renderer);
for (unsigned i = 0; i < HH_PPU_SCREEN_WIDTH; i++) {
for (unsigned j = 0; j < HH_PPU_SCREEN_HEIGHT; j++) {
pixel(g_hh_renderer, i, j, (unsigned)(sqrt(i * 20) + frame) % 255, (i * j + frame) % 255, (j * 20) % 255);
}
}
SDL_SetRenderDrawColor(g_hh_renderer, 0, 0, 0, 255);
SDL_RenderPresent(g_hh_renderer);
uint32_t end = SDL_GetTicks();
int wait_for = 1000 / HH_PPUSIM_FRAMERATE - (end - start);
if (wait_for > 0) SDL_Delay(wait_for);
}
}
void hh_ppu_deinit() {
SDL_DestroyRenderer(g_hh_renderer);
SDL_DestroyWindow(g_hh_window);
SDL_Quit();
}
|