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These commands are provided by GLUT (the OpenGL Utility Toolkit). GLUT provides commands to create windows, subwindows, and menus; and to handle . The OpenGL programming world owes a tremendous debt to Mr. Mark J. Kilgard for writing the OpenGL Utility Toolkit, or GLUT. The GLUT library of functions. Now that we have a static image on the screen, we want to move to the next step. A changing image. We can specify a function for. GLUT to use.

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The fonts are designed such that all characters have nominally the same height. Nor does it account for the Caps-Lock key being on. Attempt to change to the requested display mode and open the GameMode window, or close the GameMode window and return to the original display mode.

Building on Windows Updating your drivers should be easy. The glutStrokeLength function returns the width in model units of a string of characters in the specified stroke font, rounded to an int. When you query the size and position of the window using glutGetFreeGLUT will return the size of the drawable area–the w,h that you specified when you created the window–and the coordinates of the upper left hand corner of the drawable tutorail area–which is NOT the x,y position of the window you specified when you created it.

The Industry’s Foundation for High Performance Graphics

Adaptations may be required. The glutTabletButtonFunc function is not implemented in freeglutalthough the library does “answer the mail” to the extent that a call to the function will not produce an error. The second, glutLeaveMainLoopcauses the event loop to exit nicely; this is preferable to the application’s calling exit from within a GLUT callback.


For instance, you can choose C: The Delete key is considered to be a regular key.

GLUT Tutorial

If unsure about your GPU model: Since the freeglut library was developed in order to update GLUT, it is natural that there will be some differences between the two. Click on the hammer on the bottom.

Users who find differences should contact the freeglut Programming Consortium to have them fixed. Running the tutorials You should run the tutorials directly from the right directory: If the idle callback renders a particular window this is considered bad form but is frequently done anywaythe programmer should supply a window closure callback for that window which changes or disables the idle callback.

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If the application has two nested calls to glutMainLoop and calls glutLeaveMainLoop freeglt, the behaviour of freeglut is undefined. The glutWireDodecahedron and glutSolidDodecahedron functions draw a wireframe and solid dodecahedron twelve-sided Platonic solid respectively. Source Code and Projects.

The glutSetWindowTitleglutSetIconTitle set the window title freeeglut when the window is in a visible state and when it is in an iconified state respectively. If you do not register a wheel callback, wheel events will be reported as mouse buttons.

Lazy Foo’ Productions – Setting up freeGLUT on Linux

For all these platforms, the procedure is roughly the same:. The glutStrokeCharacter function renders the given character in the specified stroke font. They are included to allow programmers to create with a single line of code a three-dimensional object which can be used to test a variety of OpenGL functionality. The OpenGL programming world owes a tremendous debt to Mr.

In Tutorial 2, you will learn how to actually draw a triangle. The glutKeyboardUpFunc function specifies the function that freeglut will call when the user releases a key from the keyboard.

Furthermore, solid and wireframe versions of the original teacup and teaspoon that accompanied the famous Newell teapot. Freeglut does not use any display lists in its rendering of stroke fonts.


The glutStrokeLengthf function returns the width in model units of the given character string in the specified stroke font. The glutWireCone and glutSolidCone functions draw a wireframe and solid cone respectively. The glutWireCylinder and glutSolidCylinder functions draw a wireframe and solid cone respectively.

The border and title bar are commonly called “decorations. The glutMainLoopEvent function processes a single iteration in the freeglut event loop. The glutIdleFunc function sets the ttuorial idle callback.

If you have an Intel GPU, they are not 3. Opening a window Finally! Freeglut calls the idle callback when there are no inputs from the user. The width of nonexistent characters is counted to be the width of an asterisk. The One demo includes such an icon as an example. Notice that it can be anywhere, not necessarily in the same folder. Because the font is a stroke font, the width is actually a floating-point number; the function rounds it to the nearest integer for the return value.

Looking for a good FreeGlut tutorial – C++ Forum

If the user has a need for an unsupported callback he should contact the freeglut development team. Another 3 or 4 lines and you can a keyboard and mouse freetlut your application. The other functions render the teacup and teaspoon he used in the table scene figure in his PhD thesis. A new function, glutMainLoopEventhas been added to allow this functionality. Under his license, people are allowed freely to copy and distribute the libraries and the source code, but they are not allowed to modify it.