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Merge pull request #45 from digarok/sdl2_performance_profile

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fix sdl frame rendering vsync method to simply present the buffer once per frame
This commit is contained in:
Dagen Brock 2018-08-26 14:23:12 -05:00 committed by GitHub
commit 712c0792bf
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2 changed files with 19 additions and 18 deletions
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25
src/sdl2_driver.c
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@ -416,17 +416,9 @@ void sdl_push_kimage(Kimage *kimage_ptr, int destx, int desty, int srcx, int src
pitch = BORDER_WIDTH+72; pitch = BORDER_WIDTH+72;
} }
SDL_UpdateTexture(texture, &dstrect, src_ptr, pitch*4 ); SDL_UpdateTexture(texture, &dstrect, src_ptr, pitch*4 );
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
if (g_scanline_simulator) {
SDL_RenderCopy(renderer, overlay_texture, NULL, NULL);
}
SDL_RenderPresent(renderer);
if (g_screenshot_requested) { // We now call the render step seperately in sdl_present_buffer once per frame
x_take_screenshot(); // SDL picks up the buffer and waits for VBLANK to send it
g_screenshot_requested = 0;
}
} }
@ -806,6 +798,19 @@ void debuginfo_renderer(SDL_Renderer *r) {
} }
} }
void sdl_present_buffer() {
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, NULL, NULL);
if (g_scanline_simulator) {
SDL_RenderCopy(renderer, overlay_texture, NULL, NULL);
}
SDL_RenderPresent(renderer);
if (g_screenshot_requested) {
x_take_screenshot();
g_screenshot_requested = 0;
}
}
// BELOW ARE FUNCTIONS THAT ARE EITHER UNIMPLEMENTED, OR AR NOT RELEVANT TO // BELOW ARE FUNCTIONS THAT ARE EITHER UNIMPLEMENTED, OR AR NOT RELEVANT TO
// THIS DRIVER. // THIS DRIVER.

12
src/video.c
View File

@ -640,7 +640,10 @@ void video_update() {
video_update_through_line(0); video_update_through_line(0);
} }
#if defined(HAVE_SDL)
extern void sdl_present_buffer();
sdl_present_buffer();
#endif
// OG Notify host that video has been uodated // OG Notify host that video has been uodated
#if defined(ACTIVEGSPLUGIN) && defined(MAC) #if defined(ACTIVEGSPLUGIN) && defined(MAC)
{ {
@ -3474,13 +3477,6 @@ void video_update_color_array(int col_num, int a2_color) {
return; return;
} }
#if 0
if(g_screen_depth != 8) {
/* redraw whole superhires for now */
g_full_refresh_needed = -1;
}
#endif
video_update_color_raw(col_num, a2_color); video_update_color_raw(col_num, a2_color);
} }