From 0ef8e84c082a80354b502b169b6c79fccffa4405 Mon Sep 17 00:00:00 2001
From: Morten Hustveit <morten.hustveit@gmail.com>
Date: Tue, 2 Dec 2014 14:22:11 -0500
Subject: Make a headless entry point for benchmarking purposes

---
 main_glut.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 main_glut.c

(limited to 'main_glut.c')

diff --git a/main_glut.c b/main_glut.c
new file mode 100644
index 0000000..cf22a73
--- /dev/null
+++ b/main_glut.c
@@ -0,0 +1,75 @@
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <GL/glut.h>
+
+#include "ray.h"
+
+static int threaded;
+
+static int
+init(int argc, char **argv, int w, int h) {
+    glutInit(&argc, argv);
+
+    glutInitWindowPosition(0, 0);
+    glutInitWindowSize(w, h);
+    glutInitDisplayMode(GLUT_RGB);
+    glutCreateWindow(argv[0]);
+
+    glDepthMask(0);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_BLEND);
+
+    return 0;
+}
+
+static void
+display(void) {
+    static int count = 0;
+    ++count;
+    if(count > 10000)
+        exit(0);
+    float time = (float)glutGet(GLUT_ELAPSED_TIME) / 1000;
+
+    unsigned char* buffer = calloc(4, WIDTH * HEIGHT);
+    trace_scene(time, buffer, threaded);
+    glDrawPixels(WIDTH, HEIGHT, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
+    free(buffer);
+
+    glutSwapBuffers();
+}
+
+static void
+reshape(int w, int h) {
+    glViewport(0, 0, w, h);
+}
+
+static void
+keyboard(unsigned char key, int x, int y) {
+    switch(key) {
+    case 27:
+        exit(EXIT_SUCCESS);
+        break;
+    case 't':
+        if(threaded)
+            threaded = 0;
+        else
+            threaded = 1;
+        break;
+    }
+}
+
+
+int
+main(int argc, char **argv) {
+    if (init(argc, argv, WIDTH, HEIGHT))
+        return EXIT_FAILURE;
+
+    glutDisplayFunc(display);
+    glutIdleFunc(display);
+    glutReshapeFunc(reshape);
+    glutKeyboardFunc(keyboard);
+
+    glutMainLoop();
+
+    return EXIT_SUCCESS;
+}
-- 
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