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Update test_sdl_canvas. NFC #21453

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Feb 29, 2024
Merged

Update test_sdl_canvas. NFC #21453

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19 changes: 9 additions & 10 deletions test/browser/test_sdl_canvas.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,34 +50,33 @@ int main(int argc, char **argv) {
SDL_Rect rect = { 200, 200, 175, 125 };
SDL_FillRect(screen, &rect, SDL_MapRGBA(screen->format, 0x22, 0x22, 0xff, 0xff));

SDL_Flip(screen);
SDL_Flip(screen);

SDL_LockSurface(screen);

int width, height;
emscripten_get_canvas_element_size("#canvas", &width, &height);

if (width != 600 && height != 450)
{
printf("error: wrong width/height\n");
abort();
}
assert(width == 600);
assert(height == 450);

int sum = 0;
int row_size = screen->w * 4;
// Sum the red components of each pixel on the diagonal.
for (int i = 0; i < screen->h; i++) {
sum += *((char*)screen->pixels + i*screen->w*4 + i*4 + 0);
sum += *((char*)screen->pixels + i*row_size + i*4 + 0);
}
printf("Sum: %d\n", sum);

printf("you should see two lines of text in different colors and a blue rectangle\n");

SDL_UnlockSurface(screen);

SDL_Quit();

printf("done.\n");

assert(sum > 3000 && sum < 5000); // varies a little on different browsers, font differences?
// varies a little on different browsers, font differences?
assert(sum > 2000 && sum < 5000);

return 0;
}
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14 changes: 7 additions & 7 deletions test/test_browser.py
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Expand Up @@ -831,13 +831,13 @@ def test_sdl_stb_image_cleanup(self):
shutil.copyfile(test_file('screenshot.jpg'), 'screenshot.not')
self.btest_exit('test_sdl_stb_image_cleanup.c', args=['-sSTB_IMAGE', '--preload-file', 'screenshot.not', '-lSDL', '-lGL', '--memoryprofiler'])

def test_sdl_canvas(self):
self.btest_exit('test_sdl_canvas.c', args=['-sLEGACY_GL_EMULATION', '-lSDL', '-lGL'])
# some extra coverage
self.clear()
self.btest_exit('test_sdl_canvas.c', args=['-sLEGACY_GL_EMULATION', '-O0', '-sSAFE_HEAP', '-lSDL', '-lGL'])
self.clear()
self.btest_exit('test_sdl_canvas.c', args=['-sLEGACY_GL_EMULATION', '-O2', '-sSAFE_HEAP', '-lSDL', '-lGL'])
@parameterized({
'': ([],),
'safe_heap': (['-sSAFE_HEAP'],),
'safe_heap_O2': (['-sSAFE_HEAP', '-O2'],),
})
def test_sdl_canvas(self, args):
self.btest_exit('test_sdl_canvas.c', args=['-sLEGACY_GL_EMULATION', '-lSDL', '-lGL'] + args)

def post_manual_reftest(self):
assert os.path.exists('reftest.js')
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