Merge pull request #1 from mortehu/master

Make a headless entry point for benchmarking purposes

1 files changed, 78 insertions, 0 deletions

diff --git a/main_glut.c b/main_glut.c
new file mode 100644
index 0000000..e24ab5e
--- /dev/null
+++ b/main_glut.c
@@ -0,0 +1,78 @@
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <GL/glut.h>
+
+#include "ray.h"
+
+static int threaded = 1;
+static int viewport_width, viewport_height;
+
+static int
+init(int argc, char **argv, int w, int h) {
+    glutInit(&argc, argv);
+
+    glutInitWindowPosition(0, 0);
+    glutInitWindowSize(w, h);
+    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+    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(viewport_width * viewport_height, 4);
+    trace_scene(time, viewport_width, viewport_height, buffer, threaded);
+    glClear(GL_COLOR_BUFFER_BIT);
+    glRasterPos2d(-1.0, -1.0);
+    glDrawPixels(viewport_width, viewport_height, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
+    free(buffer);
+
+    glutSwapBuffers();
+}
+
+static void
+reshape(int w, int h) {
+    viewport_width = w;
+    viewport_height = 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':
+        threaded = !threaded;
+        break;
+    }
+}
+
+
+int
+main(int argc, char **argv) {
+    if (init(argc, argv, 800, 600))
+        return EXIT_FAILURE;
+
+    glutDisplayFunc(display);
+    glutIdleFunc(display);
+    glutReshapeFunc(reshape);
+    glutKeyboardFunc(keyboard);
+
+    glutMainLoop();
+
+    return EXIT_SUCCESS;
+}