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messy experimentation commit

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This commit is contained in:
Shaun Inman 2023-01-03 22:17:49 -05:00
parent ec15d449e1
commit f6f8fa6a8f
13 changed files with 2472 additions and 426 deletions
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src/test/main.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
#include <SDL/SDL_ttf.h>
#include <sys/types.h>
#include <dirent.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include "defines.h"
#include "utils.h"
#include "api.h"
///////////////////////////////////////
#include <inttypes.h>
#include <sys/time.h>
static uint64_t GFX_getTicks(void) {
uint64_t ret;
struct timeval tv;
gettimeofday(&tv, NULL);
ret = (uint64_t)tv.tv_sec * 1000000;
ret += (uint64_t)tv.tv_usec;
return ret;
}
int main (int argc, char *argv[]) {
SDL_Surface* screen = GFX_init();
PAD_reset();
int quit = 0;
while (!quit) {
// unsigned long frame_start = SDL_GetTicks();
uint64_t frame_start_us = GFX_getTicks();
PAD_poll();
if (PAD_anyPressed()) break;
// TODO: diagnosing framepacing issues
static int frame = 0;
int x = frame * 8;
void* dst;
dst = screen->pixels;
memset(dst, (frame%2)?0x00:0xff, (SCREEN_HEIGHT * SCREEN_PITCH));
// memset(dst, 0, (16 * SCREEN_PITCH));
// for (int y=0; y<16; y++) {
// memset(dst+(8 * 60 * SCREEN_BPP), 0xff, SCREEN_BPP);
// dst += SCREEN_PITCH;
// }
//
// dst = screen->pixels;
// dst += (x * SCREEN_BPP);
//
// for (int y=0; y<16; y++) {
// memset(dst, 0xff, 8 * SCREEN_BPP);
// dst += SCREEN_PITCH;
// }
frame += 1;
if (frame>=60) frame -= 60;
GFX_flip(screen);
// SDL_Delay(500);
// slow down to 60fps
// unsigned long frame_duration = SDL_GetTicks() - frame_start;
uint64_t frame_duration_us = GFX_getTicks() - frame_start_us;
// #define TARGET_FRAME_DURATION 17
#define TARGET_FRAME_DURATION_US 16667
// if (frame_duration<TARGET_FRAME_DURATION) SDL_Delay(TARGET_FRAME_DURATION-frame_duration);
if (frame_duration_us<TARGET_FRAME_DURATION_US) usleep(TARGET_FRAME_DURATION_US-frame_duration_us);
}
SDL_FreeSurface(screen);
GFX_quit();
}