Nice animation in mandel.cu/main()

1 files changed, 8 insertions, 4 deletions

diff --git a/mandel.cu b/mandel.cu
index 386f962..6d34802 100644
--- a/mandel.cu
+++ b/mandel.cu
@@ -232,12 +232,16 @@ int main() {
 
 	uint8_t *img = new uint8_t[3 * 1920 * 1080];
 
-	for (int i = 0; i <= 141; i++) {
+	for (int i = 0; i <= 5 * 141; i++) {
 		mandel_render(img, ctx, &par, 1);
 		char fname[64];
-		sprintf(fname, "outdir/out%03d.bmp", i);
-		bmp_rgb_encode_file(fname, img, 1920, 1080);
-		par.imgw *= 0.8;
+		sprintf(fname, "outdir/out%03d.png", i);
+		int64_t t1 = gettimestamp();
+		assert(lodepng::encode(fname, img, 1920, 1080, LCT_RGB) == 0);
+		// bmp_rgb_encode_file(fname, img, 1920, 1080);
+		int64_t t2 = gettimestamp();
+		cout << "file writing: " << (t2 - t1) / 1000000.0 << " sec" << endl;
+		par.imgw *= pow(0.8, 1.0 / 5.0);
 	}
 
 	mandel_free(ctx);