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Put the render loop back in its right place, but with delaying functionality to keep it down to roughly 60fps, not eating up all the X11 time.

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Eli Gottlieb
2010-07-19 00:24:02 -04:00
parent 725ae8e50b
commit a765c590a3
1 changed files with 17 additions and 3 deletions
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20
test/testshape.c
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@@ -6,11 +6,14 @@
#include <SDL_video.h>
#include <SDL_shape.h>
#include <SDL_keysym.h>
#include <SDL_timer.h>
#define SHAPED_WINDOW_X 150
#define SHAPED_WINDOW_Y 150
#define SHAPED_WINDOW_DIMENSION 640
#define TICK_INTERVAL 18
void render(SDL_Window* window,SDL_Texture *texture,SDL_Rect texture_dimensions) {
SDL_SelectRenderer(window);
@@ -24,6 +27,16 @@ void render(SDL_Window* window,SDL_Texture *texture,SDL_Rect texture_dimensions)
SDL_RenderPresent();
}
static Uint32 next_time;
Uint32 time_left() {
Uint32 now = SDL_GetTicks();
if(next_time <= now)
return 0;
else
return next_time - now;
}
int main(int argc,char** argv) {
if(argc < 2) {
printf("SDL_Shape requires at least one bitmap file as argument.\n");
@@ -106,7 +119,7 @@ int main(int argc,char** argv) {
SDL_QueryTexture(textures[current_picture],&format,&access,&texture_dimensions.w,&texture_dimensions.h);
SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
SDL_SetWindowShape(window,pictures[current_picture],&mode);
render(window,textures[current_picture],texture_dimensions);
next_time = SDL_GetTicks() + TICK_INTERVAL;
while(should_exit == 0) {
event_pending = SDL_PollEvent(&event);
if(event_pending == 1) {
@@ -123,13 +136,14 @@ int main(int argc,char** argv) {
SDL_QueryTexture(textures[current_picture],&format,&access,&texture_dimensions.w,&texture_dimensions.h);
SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
SDL_SetWindowShape(window,pictures[current_picture],&mode);
render(window,textures[current_picture],texture_dimensions);
}
if(event.type == SDL_QUIT)
should_exit = 1;
event_pending = 0;
}
render(window,textures[current_picture],texture_dimensions);
SDL_Delay(time_left());
next_time += TICK_INTERVAL;
}
//Free the textures.