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add GLSL Basics Cocoa
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Darcy Liu committed Feb 25, 2013
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719 changes: 719 additions & 0 deletions GLSLBasicsCocoaDL/English.lproj/MainMenu.nib/designable.nib
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336 changes: 336 additions & 0 deletions GLSLBasicsCocoaDL/GLSLBasicsCocoaDL.xcodeproj/project.pbxproj
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28 changes: 28 additions & 0 deletions GLSLBasicsCocoaDL/ReadMe.txt
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Introduction:

This sample code demonstrates how to load, compile, and link GLSL fragment and vertex shaders from within a simple Cocoa application.

The Fragment and vertex shaders have c like syntax and reside in the files with ".vs" and ".fs" extensions respectively, inside the main application bundle. They're loaded, compiled, linked and bound to a program object using OpenGL APIs and instantiated through the Shader class. The shader class here does not validate the program object.

This project further contains a simple class for displaying strings in an OpenGL view using GLUT's built-in bitmap fonts.

This application further demonstrates a simple timer based OpenGL animation from within a Cocoa application.

It is also worth noting that the Tranguloid Trefoil geometry here is a parametric surface, created using a display list.

Mouse support:

� For zooming the object, hold the right-mouse down and move mouse up or down.
� For updating the pitch, hold the left-mouse key down and change the angle.

Revision History:

� Refactored the sample code to better demonstrate the interaction of OpenGL APIs with an OpenGL view.
� Moved the GLSL program object instantiation into its own basic class.
� Moved the GLSL hardware check code into its a separate file.
� Consistent use of float math library functions for pattern and palette generation.
� Animation continues during window resizing.
� Consistent use of doubles and their OpenGL equivalents during geometry generation.
� Updated the Xcode project to use the new format.
� Updated the NIB to use the new format.
� Added a simple GLUT string class.
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