Created
April 5, 2019 02:50
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#include <stdio.h> | |
#include <stdlib.h> | |
#include <SDL2/SDL.h> | |
int main() { | |
int windowHeight = 240; | |
int windowWidth = 320; | |
if (SDL_Init(SDL_INIT_VIDEO) < 0) { | |
printf("Initialization failed\n"); | |
return 1; | |
} | |
SDL_Window *window = SDL_CreateWindow("Practice making sdl Window", | |
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, windowWidth, | |
windowHeight, SDL_WINDOW_SHOWN); | |
if (window == NULL) { | |
SDL_Quit(); | |
return 2; | |
} | |
// We create a renderer with hardware acceleration, we also present according with the vertical sync refresh. | |
SDL_Renderer *s = SDL_CreateRenderer(window, 0, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC) ; | |
int quit = 0; | |
SDL_Event event; | |
int x=0; | |
int y=0; | |
int color = 0; | |
int frames = 0; | |
int fps = 0; | |
int prev_time = SDL_GetTicks(); | |
int current_time = SDL_GetTicks(); | |
while (!quit) { | |
while (SDL_PollEvent(&event)) { | |
if (event.type == SDL_QUIT) { | |
quit = 1; | |
} | |
if(event.type == SDL_KEYDOWN) { | |
if ( event.key.keysym.sym == SDLK_q || event.key.keysym.sym == SDLK_ESCAPE) { | |
printf("Quiting...\n"); | |
quit=1; | |
break; | |
} | |
} | |
} | |
SDL_RenderClear(s); | |
for (x=0;x<windowWidth;x++) { | |
for(y=0;y<windowHeight;y++) { | |
color = rand()%0xff; | |
SDL_SetRenderDrawColor(s, color,color,color, 0xFF); | |
SDL_RenderDrawPoint(s,x,y); | |
} | |
} | |
SDL_SetRenderDrawColor(s, 0x00, 0x00, 0x00, 0xFF); | |
SDL_RenderPresent(s); | |
frames++; | |
current_time = SDL_GetTicks(); | |
if( (current_time - prev_time) > 10000) { | |
fps = frames/10; | |
printf("fps is %d\n",fps); | |
frames = 0; | |
prev_time = current_time; | |
} | |
} | |
SDL_DestroyWindow(window); | |
SDL_DestroyRenderer(s); | |
SDL_Quit(); | |
} |
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