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test program

test.c (text/x-csrc), 1.43 KB, created by Jakub Stasiak on 2019-06-18 21:20:41 UTC

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Description:

Filename:

MIME Type:

Creator: Jakub Stasiak

Created: 2019-06-18 21:20:41 UTC

Size: 1.43 KB

patch

obsolete

>#include <time.h>
>#include "SDL.h"
>
>const int iterations = 1000000;
>
>uint64_t us_since(struct timespec ts) {
>	struct timespec now;
>	clock_gettime(CLOCK_MONOTONIC_RAW, &now);
>	return (now.tv_sec - ts.tv_sec) * 1000000 + (now.tv_nsec - ts.tv_nsec) / 1000;
>}
>
>int main(int argc, char* args[]) {
>	SDL_Surface *surface; 
>	Uint32 color;
>	int i;
>	int j;
>	struct timespec start, end;
>	uint64_t delta;
>	SDL_Rect rects[20] = {
>		{0, 0, 10, 10},
>		{10, 10, 10, 10},
>		{20, 20, 10, 10},
>		{30, 30, 10, 10},
>		{40, 40, 10, 10},
>		{50, 50, 10, 10},
>		{60, 60, 10, 10},
>		{70, 70, 10, 10},
>		{80, 80, 10, 10},
>		{90, 90, 10, 10},
>		{0, 0, 10, 10},
>		{10, 10, 10, 10},
>		{20, 20, 10, 10},
>		{30, 30, 10, 10},
>		{40, 40, 10, 10},
>		{50, 50, 10, 10},
>		{60, 60, 10, 10},
>		{70, 70, 10, 10},
>		{80, 80, 10, 10},
>		{90, 90, 10, 10},
>	};
>
>	surface = SDL_CreateRGBSurface(0, 800, 600, 32, 0, 0, 0, 0);
>	color = SDL_MapRGB(surface->format, 255, 0, 0);
>
>	clock_gettime(CLOCK_MONOTONIC_RAW, &start);
>	for(i = 0; i < iterations; i++) {
>		SDL_FillRect(surface, &rects[0], color);
>	}
>	printf("%f us per SDL_FillRect\n", (float)us_since(start) / iterations);
>
>	for(j=1; j<=20; j++) {
>		clock_gettime(CLOCK_MONOTONIC_RAW, &start);
>		for(i = 0; i < iterations; i++) {
>			SDL_FillRects(surface, &rects[0], j, color);
>		}
>		delta = us_since(start);
>		printf("%f us per SDL_FillRects with %d rects (%f us per rect)\n", (float)delta / iterations, j, (float)delta / iterations / j);
>	}
>
>
>	return 0;
>}

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Attachments on bug 4674: 3831 | 3832

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.