Add a quick and dirty GLUT game mode testbed

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37808 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/kits/opengl/Jamfile

@@ -2,3 +2,4 @@ SubDir HAIKU_TOP src tests kits opengl ;
 
 SubInclude HAIKU_TOP src tests kits opengl direct_mode ;
 SubInclude HAIKU_TOP src tests kits opengl demos ;
+SubInclude HAIKU_TOP src tests kits opengl glut ;

src/tests/kits/opengl/glut/Jamfile

@@ -0,0 +1,3 @@
+SubDir HAIKU_TOP src tests kits opengl glut ;
+
+SubInclude HAIKU_TOP src tests kits opengl glut game_mode ;

src/tests/kits/opengl/glut/game_mode/Jamfile

@@ -0,0 +1,15 @@
+SubDir HAIKU_TOP src tests kits opengl glut game_mode ;
+
+SetSubDirSupportedPlatformsBeOSCompatible ;
+
+if $(TARGET_PLATFORM) != haiku {
+	# Needed for <GL/glut.h>, not present in R5.
+	# Unfortunately we also get the other headers there,
+	# that we don't really want.
+	UsePublicHeaders opengl ;
+}
+
+SimpleTest GLUTGameMode :
+	game_mode.c
+	: be libGL.so $(TARGET_LIBSUPC++)
+;

src/tests/kits/opengl/glut/game_mode/game_mode.c

@@ -0,0 +1,148 @@
+
+#include <stdio.h>
+#include <GL/glut.h>
+
+float spin = 0;
+
+static void
+draw_cube(void)
+{
+  glLoadIdentity();
+
+  /* A step backward, then spin the cube */
+  glTranslatef(0, 0, -5);
+  glRotatef(spin, 0, 0, 1);
+  glRotatef(spin, 1, 0.6, 0);
+
+  /* We tell we want to draw quads */
+  glBegin (GL_QUADS);
+
+  /* Every four calls to glVertex, a quad is drawn */
+  glColor3f(0, 0, 0); glVertex3f(-1, -1, -1);
+  glColor3f(0, 0, 1); glVertex3f(-1, -1,  1);
+  glColor3f(0, 1, 1); glVertex3f(-1,  1,  1);
+  glColor3f(0, 1, 0); glVertex3f(-1,  1, -1);
+
+  glColor3f(1, 0, 0); glVertex3f( 1, -1, -1);
+  glColor3f(1, 0, 1); glVertex3f( 1, -1,  1);
+  glColor3f(1, 1, 1); glVertex3f( 1,  1,  1);
+  glColor3f(1, 1, 0); glVertex3f( 1,  1, -1);
+
+  glColor3f(0, 0, 0); glVertex3f(-1, -1, -1);
+  glColor3f(0, 0, 1); glVertex3f(-1, -1,  1);
+  glColor3f(1, 0, 1); glVertex3f( 1, -1,  1);
+  glColor3f(1, 0, 0); glVertex3f( 1, -1, -1);
+
+  glColor3f(0, 1, 0); glVertex3f(-1,  1, -1);
+  glColor3f(0, 1, 1); glVertex3f(-1,  1,  1);
+  glColor3f(1, 1, 1); glVertex3f( 1,  1,  1);
+  glColor3f(1, 1, 0); glVertex3f( 1,  1, -1);
+
+  glColor3f(0, 0, 0); glVertex3f(-1, -1, -1);
+  glColor3f(0, 1, 0); glVertex3f(-1,  1, -1);
+  glColor3f(1, 1, 0); glVertex3f( 1,  1, -1);
+  glColor3f(1, 0, 0); glVertex3f( 1, -1, -1);
+
+  glColor3f(0, 0, 1); glVertex3f(-1, -1,  1);
+  glColor3f(0, 1, 1); glVertex3f(-1,  1,  1);
+  glColor3f(1, 1, 1); glVertex3f( 1,  1,  1);
+  glColor3f(1, 0, 1); glVertex3f( 1, -1,  1);
+
+  glEnd();
+}
+
+
+static void
+display(void)
+{
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+  draw_cube();
+
+  glutSwapBuffers();
+}
+
+
+static void
+idle(void)
+{
+	spin += 2.0;
+	if (spin > 360.0)
+		spin = 0.0;
+
+	glutPostRedisplay();
+}
+
+
+static void
+reshape(int w, int h)
+{
+	glViewport (0, 0, (GLsizei) w, (GLsizei) h);
+	// Setup the view of the cube.
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective( /* field of view in degree */ 40.0,
+		/* aspect ratio */ 1.0,
+		/* Z near */ 1.0, /* Z far */ 10.0);
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	gluLookAt(0.0, 0.0, 5.0,  // eye is at (0,0,5)
+		0.0, 0.0, 0.0,        // center is at (0,0,0)
+		0.0, 1.0, 0.);        // up is in positive Y direction
+
+	// Adjust cube position to be asthetic angle.
+	glTranslatef(0.0, 0.0, -1.0);
+	glRotatef(60, 1.0, 0.0, 0.0);
+	glRotatef(-20, 0.0, 0.0, 1.0);
+}
+
+
+static void
+init(void)
+{
+	glutIdleFunc(idle);
+	glutDisplayFunc(display);
+	glutReshapeFunc(reshape);
+
+	glClearColor(0, 0, 0, 0);
+}
+
+
+int
+main(int argc, char **argv)
+{
+	glutInit(&argc, argv);
+
+  	if (argc > 1) {
+  		printf("glutGameModeString(\"%s\"): ", argv[1]);
+
+  		glutGameModeString(argv[1]);
+
+  		if (!glutGameModeGet(GLUT_GAME_MODE_POSSIBLE))
+  			printf("*not* possible: fallback to windowed mode.\n");
+  		else {
+ 	 		printf("possible!\nglutEnterGameMode()\n");
+  			glutEnterGameMode();
+
+  			printf("glutGameModeGet(GLUT_GAME_MODE_DISPLAY_CHANGED) = %d\n",
+  				glutGameModeGet(GLUT_GAME_MODE_DISPLAY_CHANGED));
+  		}
+	}
+
+	if (!glutGameModeGet(GLUT_GAME_MODE_ACTIVE)) {
+		glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
+		glutCreateWindow(argv[0]);
+	}
+
+	init();
+
+
+	glutMainLoop();
+
+	if (glutGameModeGet(GLUT_GAME_MODE_ACTIVE)) {
+ 		printf("glutLeaveGameMode()\n");
+		glutLeaveGameMode();
+	}
+
+	return 0;
+}