From a9490274d79ecf0d7d9872c23ca4db1ac46570e6 Mon Sep 17 00:00:00 2001 From: Leo Tenenbaum Date: Fri, 5 Feb 2021 12:37:43 -0500 Subject: sleep before SDL_GL_SwapWindow to stop busy loop --- main.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'main.c') diff --git a/main.c b/main.c index bba3b6b..22e7786 100644 --- a/main.c +++ b/main.c @@ -341,7 +341,7 @@ int main(int argc, char **argv) { #if DEBUG //printf("\033[H\033[2J"); #endif - PROFILE_TIME(frame_start); + double frame_start = time_get_seconds(); SDL_Event event; @@ -643,19 +643,24 @@ int main(int argc, char **argv) { buffer_check_valid(&ted->buffers[i]); buffer_check_valid(&ted->line_buffer); #endif - - PROFILE_TIME(frame_end_noswap); - + + glFinish(); + + double frame_end_noswap = time_get_seconds(); #if PROFILE { print("Frame (noswap): %.1f ms\n", (frame_end_noswap - frame_start) * 1000); } #endif - - + + u32 ms_wait = (u32)((frame_end_noswap - frame_start) * 1000); + if (ms_wait) ms_wait -= 1; // give swap an extra ms to make sure it's actually vsynced + SDL_Delay(ms_wait); SDL_GL_SwapWindow(window); PROFILE_TIME(frame_end); + assert(glGetError() == 0); + #if PROFILE { print("Frame: %.1f ms\n", (frame_end - frame_start) * 1000); -- cgit v1.2.3