#endif
-#define CI_OFFSET_1 16
-#define CI_OFFSET_2 32
-
-
static GLboolean doubleBuffer = GL_TRUE;
static int win;
-static void Init(void)
+static void parseArgs(int argc, char** argv)
{
- fprintf(stdout, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
- fprintf(stdout, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
- fprintf(stdout, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
- fflush(stdout);
+ int i;
- glClearColor(0.3, 0.1, 0.3, 0.0);
+ for (i = 1; i < argc; ++i) {
+ const char *arg = argv[i];
+ if (strcmp(arg, "-sb") == 0) {
+ doubleBuffer = GL_FALSE;
+ } else if (strcmp(arg, "-db") == 0) {
+ doubleBuffer = GL_TRUE;
+ } else {
+ fprintf(stderr, "error: unknown arg %s\n", arg);
+ exit(1);
+ }
+ }
+}
+
+static void Init(void)
+{
+ glClearColor(0.3, 0.1, 0.3, 1.0);
}
static void Reshape(int width, int height)
if (doubleBuffer) {
glutSwapBuffers();
}
-
- glutDestroyWindow(win);
-}
-static GLenum Args(int argc, char **argv)
-{
- GLint i;
+ glutDestroyWindow(win);
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-sb") == 0) {
- doubleBuffer = GL_FALSE;
- } else if (strcmp(argv[i], "-db") == 0) {
- doubleBuffer = GL_TRUE;
- } else {
- fprintf(stderr, "%s (Bad option).\n", argv[i]);
- return GL_FALSE;
- }
- }
- return GL_TRUE;
+ exit(0);
}
int main(int argc, char **argv)
{
GLenum type;
- glutInit(&argc, argv);
+ parseArgs(argc, argv);
- if (Args(argc, argv) == GL_FALSE) {
- exit(1);
- }
+ glutInit(&argc, argv);
- glutInitWindowPosition(0, 0);
- glutInitWindowSize( 250, 250);
+ glutInitWindowSize(250, 250);
type = GLUT_RGB | GLUT_ALPHA;
type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;