Make a headless entry point for benchmarking purposes

1 files changed, 32 insertions, 0 deletions

diff --git a/main_headless.c b/main_headless.c
new file mode 100644
index 0000000..c5cd5bd
--- /dev/null
+++ b/main_headless.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <sys/time.h>
+
+#include "ray.h"
+
+static const size_t kFramesToRender = 100;
+
+int main(int argc, char** argv) {
+    fprintf(stderr, "Rendering %zu frames\n", kFramesToRender);
+  
+    unsigned char* buffer = calloc(4, WIDTH * HEIGHT);
+  
+    struct timeval start;
+    gettimeofday(&start, NULL);
+  
+    for (size_t i = 0; i < kFramesToRender; ++i)
+        trace_scene(i * 0.01f, buffer, 0);
+  
+    struct timeval end;
+    gettimeofday(&end, NULL);
+  
+    free(buffer);
+  
+    fprintf(stderr, "Average %.2f ms/frame\n",
+            (1.0e3 * (end.tv_sec - start.tv_sec) +
+             1.0e-3 * (end.tv_usec - start.tv_usec)) /
+                kFramesToRender);
+  
+    return EXIT_SUCCESS;
+}