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new file mode 100644
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new file mode 100755
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new file mode 100644
index 00000000..d710d4a8
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@@ -0,0 +1,719 @@
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new file mode 100644
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new file mode 100755
index 00000000..dff69a3d
--- /dev/null
+++ b/GLSLBasicsCocoaDL/GLSLBasicsCocoaDL.xcodeproj/project.pbxproj
@@ -0,0 +1,336 @@
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diff --git a/GLSLBasicsCocoaDL/ReadMe.txt b/GLSLBasicsCocoaDL/ReadMe.txt
new file mode 100644
index 00000000..7d71fd9c
--- /dev/null
+++ b/GLSLBasicsCocoaDL/ReadMe.txt
@@ -0,0 +1,28 @@
+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.
\ No newline at end of file
diff --git a/GLSLBasicsCocoaDL/Sources/GLUT/GLUTString.h b/GLSLBasicsCocoaDL/Sources/GLUT/GLUTString.h
new file mode 100755
index 00000000..3f95ea68
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/GLUT/GLUTString.h
@@ -0,0 +1,82 @@
+//---------------------------------------------------------------------------------
+//
+// File: GLUTString.h
+//
+// Abstract: A simple utility class for drawing strings using glut
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#import
+#import
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+@interface GLUTString : NSObject
+{
+ @private
+ void *font;
+ GLsizei width;
+ GLsizei height;
+ GLint drawX;
+ GLint drawY;
+ GLfloat red;
+ GLfloat green;
+ GLfloat blue;
+} // GLUTString
+
+- (id) initWithViewSizeAndDrawCoordinates:(const NSSize *)theSize
+ coordinates:(const NSPoint *)theCoordinates;
+
+- (void) setGLUTFont:(void *)theFont;
+- (void) setGLUTFontColor:(const GLfloat *)theColors;
+
+- (void) setViewSize:(const NSSize *)theSize;
+- (void) setDrawCoordinates:(const NSPoint *)theCoordinates;
+
+- (void) drawString:(NSString *)theString;
+
+@end
diff --git a/GLSLBasicsCocoaDL/Sources/GLUT/GLUTString.m b/GLSLBasicsCocoaDL/Sources/GLUT/GLUTString.m
new file mode 100644
index 00000000..1fda8a09
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/GLUT/GLUTString.m
@@ -0,0 +1,195 @@
+//---------------------------------------------------------------------------------------
+//
+// File: GLUTString.m
+//
+// Abstract: A simple utility class for drawing strings using glut
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#import
+
+#import "GLUTString.h"
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#define kNibble 4
+
+static const GLuint kDoubleDecimals = kNibble * sizeof(GLdouble);
+static const GLuint kFloatDecimals = kNibble * sizeof(GLfloat);
+
+static const GLuint kCharSize = sizeof(GLchar);
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+@implementation GLUTString
+
+//---------------------------------------------------------------------------------------
+
+- (id) initWithViewSizeAndDrawCoordinates:(const NSSize *)theSize
+ coordinates:(const NSPoint *)theCoordinates
+{
+ self = [super init];
+
+ if( self )
+ {
+ font = GLUT_BITMAP_9_BY_15;
+ width = (GLsizei)theSize->width;
+ height = (GLsizei)theSize->height;
+ drawX = (GLint)theCoordinates->x;
+ drawY = (GLint)theCoordinates->y;
+ red = 1.0f;
+ green = 1.0f;
+ blue = 1.0f;
+ } // if
+
+ return self;
+} // init
+
+//---------------------------------------------------------------------------------------
+
+- (void) dealloc
+{
+ [super dealloc];
+} // dealloc
+
+//---------------------------------------------------------------------------------------
+
+- (void) setGLUTFont:(void *)theFont
+{
+ font = theFont;
+} // setGLUTFont
+
+//---------------------------------------------------------------------------------------
+
+- (void) setGLUTFontColor:(const GLfloat *)theColors
+{
+ red = theColors[0];
+ green = theColors[1];
+ blue = theColors[2];
+} // setGLUTFontColor
+
+//---------------------------------------------------------------------------------------
+
+- (void) setViewSize:(const NSSize *)theSize
+{
+ width = (GLsizei)theSize->width;
+ height = (GLsizei)theSize->height;
+} // setViewSize
+
+//---------------------------------------------------------------------------------------
+
+- (void) setDrawCoordinates:(const NSPoint *)theCoordinates
+{
+ drawX = (GLint)theCoordinates->x;
+ drawY = (GLint)theCoordinates->y;
+} // setDrawCoordinates
+
+//---------------------------------------------------------------------------------------
+
+- (void) drawUTF8StringUsingGLUT:(const GLchar *)theString
+{
+ GLuint stringLength = strlen(theString);
+
+ GLuint i;
+
+ glPushAttrib(GL_TRANSFORM_BIT | GL_CURRENT_BIT);
+
+ glMatrixMode(GL_PROJECTION);
+
+ glPushMatrix();
+
+ glLoadIdentity();
+
+ glBindTexture(GL_TEXTURE_RECTANGLE_EXT,0);
+ glOrtho(0, width, 0, height, -10.0, 10.0);
+
+ glMatrixMode(GL_MODELVIEW);
+
+ glPushMatrix();
+
+ glLoadIdentity();
+
+ glColor3f(red, green, blue);
+
+ glRasterPos2i(drawX, drawY);
+
+ for( i = 0; i < stringLength; i++ )
+ {
+ glutBitmapCharacter( font, theString[i] );
+ } // for
+
+ glPopMatrix();
+
+ glMatrixMode(GL_PROJECTION);
+
+ glPopMatrix();
+
+ glPopAttrib();
+} // drawUTF8StringUsingGLUT
+
+//---------------------------------------------------------------------------------------
+
+- (void) drawString:(NSString *)theString
+{
+ const char *str =[theString UTF8String];
+
+ if( str != NULL )
+ {
+ [self drawUTF8StringUsingGLUT:str];
+ } // if
+} // drawString
+
+//---------------------------------------------------------------------------------------
+
+@end
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
diff --git a/GLSLBasicsCocoaDL/Sources/Geometry/TranguloidTrefoilGeometry.h b/GLSLBasicsCocoaDL/Sources/Geometry/TranguloidTrefoilGeometry.h
new file mode 100755
index 00000000..a5224dcc
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Geometry/TranguloidTrefoilGeometry.h
@@ -0,0 +1,64 @@
+//---------------------------------------------------------------------------
+//
+// File: TranguloidTrefoilGeometry.h
+//
+// Abstract: Tranguloid Trefoil geometry class
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2007-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+#import
+#import
+#import
+
+@interface TranguloidTrefoil : NSObject
+{
+ @private
+ GLuint displayList;
+} // TranguloidTrefoil
+
+- (id) initTranguloidTrefoilWithAttribbutes:(const GLuint)theSubdivisions
+ ratio:(const GLuint)theRatio;
+
+- (GLuint) displayList;
+
+@end
diff --git a/GLSLBasicsCocoaDL/Sources/Geometry/TranguloidTrefoilGeometry.mm b/GLSLBasicsCocoaDL/Sources/Geometry/TranguloidTrefoilGeometry.mm
new file mode 100755
index 00000000..612808d6
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Geometry/TranguloidTrefoilGeometry.mm
@@ -0,0 +1,492 @@
+//---------------------------------------------------------------------------------------
+//
+// File: TranguloidTrefoilGeometry.m
+//
+// Abstract: Tranguloid Trefoil geometry class
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2007-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------------------
+//
+// Uses techniques described by Paul Bourke 1999 - 2002
+// Tranguloid Trefoil and other example surfaces by Roger Bagula
+// see
+//
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#include
+#include
+
+//---------------------------------------------------------------------------------------
+
+#include "TranguloidTrefoilGeometry.h"
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+static const GLdouble kTwoPi = 2.0 * M_PI;
+static const GLdouble kPi = M_PI;
+static const GLdouble kTwoPiThird = ( 2.0 * M_PI ) / 3.0;
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Private Data Structures
+
+//---------------------------------------------------------------------------------------
+
+struct Position
+{
+ union
+ {
+ GLdouble P[3];
+
+ struct
+ {
+ GLdouble x;
+ GLdouble y;
+ GLdouble z;
+ }; // union
+ }; // struct
+};
+
+typedef Position Position;
+
+//---------------------------------------------------------------------------------------
+
+struct TexCoords
+{
+ union
+ {
+ GLdouble T[2];
+
+ struct
+ {
+ GLdouble s;
+ GLdouble t;
+ }; // struct
+ }; // union
+};
+
+typedef TexCoords TexCoords;
+
+//---------------------------------------------------------------------------------------
+
+struct Vertex
+{
+ Position positions;
+ Position normals;
+ TexCoords texCoords;
+};
+
+typedef Vertex Vertex;
+
+//---------------------------------------------------------------------------------------
+
+typedef std::vector Vertices;
+
+//---------------------------------------------------------------------------------------
+
+struct Geometry
+{
+ GLint rows;
+ GLint columns;
+ Vertices vertices;
+};
+
+typedef Geometry Geometry;
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Vector Class
+
+//---------------------------------------------------------------------------------------
+
+class Vector
+{
+ public:
+
+ Vector();
+ Vector(const Position *p);
+
+ Vector normalize();
+
+ Vector operator-(Vector &v);
+ Vector operator^(Vector &v); // Exterior cross product
+
+ Position position();
+
+ public:
+
+ GLdouble x;
+ GLdouble y;
+ GLdouble z;
+}; // class Vector
+
+//---------------------------------------------------------------------------------------
+
+Vector::Vector()
+{
+ x = 0;
+ y = 0;
+ z = 0;
+} // Default Constructor
+
+//---------------------------------------------------------------------------------------
+
+Vector::Vector(const Position *p)
+{
+ if( p != NULL )
+ {
+ x = p->x;
+ y = p->y;
+ z = p->z;
+ } // if
+ else
+ {
+ x = 0;
+ y = 0;
+ z = 0;
+ } // else
+}// Constructor
+
+//---------------------------------------------------------------------------------------
+
+Vector Vector::operator-(Vector &v)
+{
+ Vector w;
+
+ w.x = x - v.x;
+ w.y = y - v.y;
+ w.z = z - v.z;
+
+ return w;
+} // Vector::operator-
+
+//---------------------------------------------------------------------------------------
+//
+// Exterior (vector) cross product
+//
+//---------------------------------------------------------------------------------------
+
+Vector Vector::operator^(Vector &v)
+{
+ Vector w;
+
+ w.x = y * v.z - z * v.y;
+ w.y = z * v.x - x * v.z;
+ w.z = x * v.y - y * v.x;
+
+ return w;
+} // Vector::operator^
+
+//---------------------------------------------------------------------------------------
+
+Vector Vector::normalize()
+{
+ GLdouble L = (GLdouble)std::sqrt(x * x + y * y + z * z);
+
+ Vector w;
+
+ if( L != 0.0 )
+ {
+ L = 1.0/L;
+
+ w.x = L * x;
+ w.y = L * y;
+ w.z = L * z;
+ } // if
+
+ return w;
+} // Vector::normalize
+
+//---------------------------------------------------------------------------------------
+
+Position Vector::position()
+{
+ Position p;
+
+ p.x = x;
+ p.y = y;
+ p.z = z;
+
+ return p;
+} // Vector::position
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Utility Vector Function
+
+//---------------------------------------------------------------------------------------
+
+static Position ComputeNormals(const Position *p,
+ const Position *q,
+ const Position *r)
+{
+ Vector u(p);
+ Vector v(q);
+ Vector w(r);
+
+ Vector n;
+ Vector dv;
+ Vector dw;
+
+ Position normals;
+
+ dv = v - u;
+ dv = dv.normalize();
+
+ dw = w - u;
+ dw = dw.normalize();
+
+ n = dv ^ dw;
+ n = n.normalize();
+
+ normals = n.position();
+
+ return normals;
+} // ComputeNormals
+
+//---------------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Tranguloid Trefoil Geometry
+
+//---------------------------------------------------------------------------------------
+//
+// Note that -Pi <= u <= Pi and -Pi <= v <= Pi
+//
+//---------------------------------------------------------------------------------------
+
+static Position TranguloidTrefoilGeometry(const GLdouble u,
+ const GLdouble v)
+{
+ Position p;
+
+ GLdouble t = v + kTwoPiThird;
+ GLdouble w = 2.0 * u;
+ GLdouble A = 2.0 + cos(t);
+ GLdouble B = 2.0 + cos(v);
+
+ p.x = 2.0 * sin(3.0 * u) / B;
+ p.y = 2.0 * (sin(u) + 2.0 * sin(w)) / A;
+ p.z = 0.25 * (cos(u) - 2.0 * cos(w)) * A * B;
+
+ return p;
+} // TranguloidTrefoilGeometry
+
+//---------------------------------------------------------------------------------------
+
+static void NewTranguloidTrefoilSurface(Geometry *geometry)
+{
+ GLint i;
+ GLint j;
+ GLint maxI = geometry->rows;
+ GLint maxJ = geometry->columns;
+ GLdouble invMaxI = 1.0 / (GLdouble)maxI;
+ GLdouble invMaxJ = 1.0 / (GLdouble)maxJ;
+ GLdouble delta = 0.0005;
+ GLdouble u[2];
+ Vertex vertex;
+ Position position[2];
+
+ for(i = 0; i < maxI; i++)
+ {
+ for(j = 0; j < maxJ; j++)
+ {
+ u[0] = kTwoPi * (i % maxI) * invMaxI - kPi;
+ u[1] = kTwoPi * (j % maxJ) * invMaxJ - kPi;
+
+ vertex.positions = TranguloidTrefoilGeometry(u[0], u[1]);
+
+ position[0] = TranguloidTrefoilGeometry(u[0] + delta, u[1]);
+ position[1] = TranguloidTrefoilGeometry(u[0], u[1] + delta);
+
+ vertex.normals = ComputeNormals(&vertex.positions, &position[0], &position[1]);
+
+ vertex.texCoords.s = (GLdouble)i * invMaxI * 5.0;
+ vertex.texCoords.t = (GLdouble)j * invMaxJ;
+
+ geometry->vertices.push_back(vertex);
+ } // for
+ } // for
+} // NewTranguloidTrefoilSurface
+
+//---------------------------------------------------------------------------------------
+
+static void BuildVertex(const GLint index,
+ Geometry *geometry)
+{
+ glNormal3dv(geometry->vertices[index].normals.P);
+ glTexCoord2dv(geometry->vertices[index].texCoords.T);
+ glVertex3dv(geometry->vertices[index].positions.P);
+} // BuildVertex
+
+//---------------------------------------------------------------------------------------
+
+static GLuint NewTranguloidTrefoilDisplayList(Geometry *geometry)
+{
+ GLint i;
+ GLint j;
+ GLint k;
+ GLint l;
+ GLint m;
+ GLint maxI = geometry->rows;
+ GLint maxJ = geometry->columns;
+ GLuint displayList;
+
+ displayList = glGenLists(1);
+
+ glNewList(displayList, GL_COMPILE);
+
+ for(i = 0; i < maxI; i++)
+ {
+ glBegin(GL_TRIANGLE_STRIP);
+
+ for(j = 0; j <= maxJ; j++)
+ {
+ m = (j % maxJ);
+
+ k = (i % maxI) * maxJ + m;
+
+ BuildVertex(k, geometry);
+
+ l = ((i + 1) % maxI) * maxJ + m;
+
+ BuildVertex(l, geometry);
+ } // for
+
+ glEnd();
+ } // for
+
+ glEndList();
+
+ return displayList;
+} // NewTranguloidTrefoilDisplayList
+
+//---------------------------------------------------------------------------------------
+
+static GLuint GetTranguloidTrefoilDisplayList(const GLuint subdivisions,
+ const GLuint xyRatio)
+{
+ Geometry geometry;
+ GLuint displayList = 0;
+
+ geometry.rows = subdivisions * xyRatio;
+ geometry.columns = subdivisions;
+
+ // Build surface
+
+ NewTranguloidTrefoilSurface(&geometry);
+
+ // Now get the display list
+
+ displayList = NewTranguloidTrefoilDisplayList(&geometry);
+
+ return displayList;
+} // GetTranguloidTrefoilDisplayList
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
+
+#pragma mark -
+
+//---------------------------------------------------------------------------------------
+
+@implementation TranguloidTrefoil
+
+//---------------------------------------------------------------------------------------
+
+- (id) initTranguloidTrefoilWithAttribbutes:(const GLuint)theSubdivisions
+ ratio:(const GLuint)theRatio
+{
+ self = [super init];
+
+ if( self )
+ {
+ displayList = GetTranguloidTrefoilDisplayList(theSubdivisions, theRatio);
+ } // if
+
+ return self;
+} // init
+
+//---------------------------------------------------------------------------------------
+
+- (GLuint) displayList
+{
+ return displayList;
+} // displayList
+
+//---------------------------------------------------------------------------------------
+
+- (void) dealloc
+{
+ // delete the last used display list
+
+ if(displayList)
+ {
+ glDeleteLists(displayList, 1);
+ } // if
+
+ [super dealloc];
+} // dealloc
+
+//---------------------------------------------------------------------------------------
+
+@end
+
+//---------------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------------
diff --git a/GLSLBasicsCocoaDL/Sources/Hardware/GLSLHardwareSupport.c b/GLSLBasicsCocoaDL/Sources/Hardware/GLSLHardwareSupport.c
new file mode 100755
index 00000000..28db4253
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Hardware/GLSLHardwareSupport.c
@@ -0,0 +1,163 @@
+//---------------------------------------------------------------------------------
+//
+// File: GLSLHardwareSupport.c
+//
+// Abstract: Check to see if fragment & vertex shader can execute in hardware.
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Apple Inc. ("Apple") in consideration of your agreement to the
+// following terms, and your use, installation, modification or
+// redistribution of this Apple software constitutes acceptance of these
+// terms. If you do not agree with these terms, please do not use,
+// install, modify or redistribute this Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc.
+// may be used to endorse or promote products derived from the Apple
+// Software without specific prior written permission from Apple. Except
+// as expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#import "GLSLHardwareSupport.h"
+
+//---------------------------------------------------------------------------------
+
+#import
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+static inline GLboolean CheckForExtension(const GLchar *extensionName,
+ const GLubyte *extensions)
+{
+ GLboolean bExtensionAvailable = gluCheckExtension((GLubyte *)extensionName,
+ extensions);
+
+ return bExtensionAvailable;
+} // CheckForExtension
+
+//---------------------------------------------------------------------------------
+
+static inline void CheckForAndLogExtensionAvailable(const GLboolean extensionAvailable,
+ const GLchar *extensionName)
+{
+ if( extensionAvailable == GL_FALSE )
+ {
+ NSLog(@">> WARNING: \"%s\" extension is not available!\n",
+ extensionName);
+ } // if
+} // CheckForExtensions
+
+//---------------------------------------------------------------------------------
+
+static void CheckForShaders(NSOpenGLPixelFormatAttribute *thePixelAttributes)
+{
+ const GLubyte *extensions = glGetString(GL_EXTENSIONS);
+
+ GLboolean bShaderObjectAvailable = CheckForExtension("GL_ARB_shader_objects", extensions);
+ GLboolean bShaderLanguage100Available = CheckForExtension("GL_ARB_shading_language_100", extensions);
+ GLboolean bVertexShaderAvailable = CheckForExtension("GL_ARB_vertex_shader", extensions);
+ GLboolean bFragmentShaderAvailable = CheckForExtension("GL_ARB_fragment_shader", extensions);
+
+ GLboolean bForceSoftwareRendering = (bShaderObjectAvailable == GL_FALSE)
+ || (bShaderLanguage100Available == GL_FALSE)
+ || (bVertexShaderAvailable == GL_FALSE)
+ || (bFragmentShaderAvailable == GL_FALSE);
+
+ if( bForceSoftwareRendering )
+ {
+ // Force software rendering, so fragment shaders will execute
+
+ CheckForAndLogExtensionAvailable(bShaderObjectAvailable, "GL_ARB_shader_objects");
+ CheckForAndLogExtensionAvailable(bShaderLanguage100Available, "GL_ARB_shading_language_100");
+ CheckForAndLogExtensionAvailable(bVertexShaderAvailable, "GL_ARB_vertex_shader");
+ CheckForAndLogExtensionAvailable(bFragmentShaderAvailable, "GL_ARB_fragment_shader");
+
+ thePixelAttributes [3] = NSOpenGLPFARendererID;
+ thePixelAttributes [4] = kCGLRendererGenericFloatID;
+ } // if
+} // CheckForShaders
+
+//---------------------------------------------------------------------------------
+
+static void CheckForClipVolumeHint(NSOpenGLPixelFormatAttribute *thePixelAttributes)
+{
+ const GLubyte *extensions = glGetString(GL_EXTENSIONS);
+
+ // Inform OpenGL that the geometry is entirely within the
+ // view volume and that view-volume clipping is unnecessary.
+ // Normal clipping can be resumed by setting this hint to
+ // GL_DONT_CARE. When clipping is disabled with this hint,
+ // results are undefined if geometry actually falls outside
+ //the view volume.
+
+ GLboolean bClipVolumeHintExtAvailable = CheckForExtension("GL_EXT_clip_volume_hint",
+ extensions);
+
+ if( bClipVolumeHintExtAvailable == GL_TRUE)
+ {
+ glHint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,GL_FASTEST);
+ } // if
+} // CheckForClipVolumeHint
+
+//---------------------------------------------------------------------------------
+
+void CheckForGLSLHardwareSupport(NSOpenGLPixelFormatAttribute *thePixelAttributes)
+{
+ // Create a pre-flight context to check for GLSL hardware support
+
+ NSOpenGLPixelFormat *pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:thePixelAttributes];
+
+ if( pixelFormat != nil )
+ {
+ NSOpenGLContext *preflight = [[NSOpenGLContext alloc] initWithFormat:pixelFormat
+ shareContext:nil];
+
+ if( preflight != nil )
+ {
+ [preflight makeCurrentContext];
+
+ CheckForShaders(thePixelAttributes);
+ CheckForClipVolumeHint(thePixelAttributes);
+
+ [preflight release];
+ } // if
+
+ [pixelFormat release];
+ } // if
+} // CheckForGLSLHardwareSupport
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
diff --git a/GLSLBasicsCocoaDL/Sources/Hardware/GLSLHardwareSupport.h b/GLSLBasicsCocoaDL/Sources/Hardware/GLSLHardwareSupport.h
new file mode 100755
index 00000000..2d10e96f
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Hardware/GLSLHardwareSupport.h
@@ -0,0 +1,65 @@
+//---------------------------------------------------------------------------------
+//
+// File: GLSLHardwareSupport.c
+//
+// Abstract: Check to see if fragment & vertex shader can execute in hardware.
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Apple Inc. ("Apple") in consideration of your agreement to the
+// following terms, and your use, installation, modification or
+// redistribution of this Apple software constitutes acceptance of these
+// terms. If you do not agree with these terms, please do not use,
+// install, modify or redistribute this Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc.
+// may be used to endorse or promote products derived from the Apple
+// Software without specific prior written permission from Apple. Except
+// as expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008 Apple Inc., All rights reserved.
+//
+//-------------------------------------------------------------------------
+
+#ifndef _GLSL_HARDWARE_SUPPORT_H_
+#define _GLSL_HARDWARE_SUPPORT_H_
+
+#import
+#import
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ void CheckForGLSLHardwareSupport(NSOpenGLPixelFormatAttribute *thePixelAttributes);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/GLSLBasicsCocoaDL/Sources/Other/main.m b/GLSLBasicsCocoaDL/Sources/Other/main.m
new file mode 100755
index 00000000..e33d383b
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Other/main.m
@@ -0,0 +1,54 @@
+//---------------------------------------------------------------------------
+//
+// File: main.m
+//
+// Abstract: Appliucation Main
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2007-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+#import
+
+int main(int argc, char *argv[])
+{
+ return NSApplicationMain(argc, (const char **) argv);
+}
diff --git a/GLSLBasicsCocoaDL/Sources/Plasma/Plasma.fs b/GLSLBasicsCocoaDL/Sources/Plasma/Plasma.fs
new file mode 100755
index 00000000..df978046
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Plasma/Plasma.fs
@@ -0,0 +1,63 @@
+//---------------------------------------------------------------------------
+//
+// File: Plasma.frag
+//
+// Abstract: GLSL Plasma fragment shader
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2004-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+uniform sampler1D palette;
+uniform sampler2D pattern;
+uniform float offset;
+varying float LightIntensity;
+
+void main()
+{
+ vec4 color;
+ color = texture2D(pattern, gl_TexCoord[0].st);
+ color = texture1D(palette, (color.r+offset));
+ color.a = 1.0;
+ color = color * LightIntensity;
+ color = clamp(color, 0.0, 1.0);
+ gl_FragColor = color;
+}
diff --git a/GLSLBasicsCocoaDL/Sources/Plasma/Plasma.vs b/GLSLBasicsCocoaDL/Sources/Plasma/Plasma.vs
new file mode 100755
index 00000000..121c0f2f
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Plasma/Plasma.vs
@@ -0,0 +1,62 @@
+//---------------------------------------------------------------------------
+//
+// File: Plasma.vert
+//
+// Abstract: GLSL Plasma vertex shader
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2004-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+varying float LightIntensity;
+uniform vec3 LightPosition;
+
+void main()
+{
+ vec4 ECposition = gl_ModelViewMatrix * gl_Vertex;
+ vec3 tnorm = normalize(vec3 (gl_NormalMatrix * gl_Normal));
+
+ LightIntensity = dot(normalize(LightPosition - vec3 (ECposition)), tnorm) * 1.5;
+
+ gl_Position = ftransform();
+
+ gl_TexCoord[0] = gl_MultiTexCoord0;
+}
diff --git a/GLSLBasicsCocoaDL/Sources/Shader/Shader.h b/GLSLBasicsCocoaDL/Sources/Shader/Shader.h
new file mode 100755
index 00000000..9e883192
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Shader/Shader.h
@@ -0,0 +1,82 @@
+//-------------------------------------------------------------------------
+//
+// File: Shader.h
+//
+// Abstract: Rudimentary class to instantiate a shader object
+// NOTE: This class does not validate the program object
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008 Apple Inc., All rights reserved.
+//
+//-------------------------------------------------------------------------
+
+//-------------------------------------------------------------------------
+//
+// Required Includes
+//
+//-------------------------------------------------------------------------
+
+#import
+#import
+
+//-------------------------------------------------------------------------
+//
+// GLSL Shader
+//
+//-------------------------------------------------------------------------
+
+@interface Shader : NSObject
+{
+ @private
+ const GLcharARB *fragmentShaderSource; // the GLSL source for the fragment Shader
+ const GLcharARB *vertexShaderSource; // the GLSL source for the vertex Shader
+ GLhandleARB programObject; // the program object
+} // Shader
+
+- (id) initWithShadersInAppBundle:(NSString *)theShadersName;
+
+- (GLhandleARB) programObject;
+
+- (GLint) getUniformLocation:(const GLcharARB *)theUniformName;
+
+@end
+
+//-------------------------------------------------------------------------
+
diff --git a/GLSLBasicsCocoaDL/Sources/Shader/Shader.m b/GLSLBasicsCocoaDL/Sources/Shader/Shader.m
new file mode 100755
index 00000000..c96214c0
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/Shader/Shader.m
@@ -0,0 +1,380 @@
+//---------------------------------------------------------------------------------
+//
+// File: Shader.m
+//
+// Abstract: Rudimentary class to instantiate a shader object
+// NOTE: This class does not validate the program object
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#import "Shader.h"
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -- Compiling shaders & linking a program object --
+
+//---------------------------------------------------------------------------------
+
+static GLhandleARB LoadShader(GLenum theShaderType,
+ const GLcharARB **theShader,
+ GLint *theShaderCompiled)
+{
+ GLhandleARB shaderObject = NULL;
+
+ if( theShader != NULL )
+ {
+ GLint infoLogLength = 0;
+
+ shaderObject = glCreateShaderObjectARB(theShaderType);
+
+ glShaderSourceARB(shaderObject, 1, theShader, NULL);
+ glCompileShaderARB(shaderObject);
+
+ glGetObjectParameterivARB(shaderObject,
+ GL_OBJECT_INFO_LOG_LENGTH_ARB,
+ &infoLogLength);
+
+ if( infoLogLength > 0 )
+ {
+ GLcharARB *infoLog = (GLcharARB *)malloc(infoLogLength);
+
+ if( infoLog != NULL )
+ {
+ glGetInfoLogARB(shaderObject,
+ infoLogLength,
+ &infoLogLength,
+ infoLog);
+
+ NSLog(@">> Shader compile log:\n%s\n", infoLog);
+
+ free(infoLog);
+ } // if
+ } // if
+
+ glGetObjectParameterivARB(shaderObject,
+ GL_OBJECT_COMPILE_STATUS_ARB,
+ theShaderCompiled);
+
+ if( *theShaderCompiled == 0 )
+ {
+ NSLog(@">> Failed to compile shader %s\n", theShader);
+ } // if
+ } // if
+ else
+ {
+ *theShaderCompiled = 1;
+ } // else
+
+ return shaderObject;
+} // LoadShader
+
+//---------------------------------------------------------------------------------
+
+static void LinkProgram(GLhandleARB programObject,
+ GLint *theProgramLinked)
+{
+ GLint infoLogLength = 0;
+
+ glLinkProgramARB(programObject);
+
+ glGetObjectParameterivARB(programObject,
+ GL_OBJECT_INFO_LOG_LENGTH_ARB,
+ &infoLogLength);
+
+ if( infoLogLength > 0 )
+ {
+ GLcharARB *infoLog = (GLcharARB *)malloc(infoLogLength);
+
+ if( infoLog != NULL)
+ {
+ glGetInfoLogARB(programObject,
+ infoLogLength,
+ &infoLogLength,
+ infoLog);
+
+ NSLog(@">> Program link log:\n%s\n", infoLog);
+
+ free(infoLog);
+ } // if
+ } // if
+
+ glGetObjectParameterivARB(programObject,
+ GL_OBJECT_LINK_STATUS_ARB,
+ theProgramLinked);
+
+ if( *theProgramLinked == 0 )
+ {
+ NSLog(@">> Failed to link program 0x%lx\n", (GLubyte *)&programObject);
+ } // if
+} // LinkProgram
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+@implementation Shader
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -- Get shaders from resource --
+
+//---------------------------------------------------------------------------------
+
+- (GLcharARB *) getShaderSourceFromResource:(NSString *)theShaderResourceName
+ extension:(NSString *)theExtension
+{
+ NSBundle *appBundle = [NSBundle mainBundle];
+
+ NSString *shaderTempSource = [appBundle pathForResource:theShaderResourceName
+ ofType:theExtension];
+ GLcharARB *shaderSource = NULL;
+
+ shaderTempSource = [NSString stringWithContentsOfFile:shaderTempSource];
+ shaderSource = (GLcharARB *)[shaderTempSource cStringUsingEncoding:NSASCIIStringEncoding];
+
+ return shaderSource;
+} // getShaderSourceFromResource
+
+//---------------------------------------------------------------------------------
+
+- (void) getFragmentShaderSourceFromResource:(NSString *)theFragmentShaderResourceName
+{
+ fragmentShaderSource = [self getShaderSourceFromResource:theFragmentShaderResourceName
+ extension:@"fs" ];
+} // getFragmentShaderSourceFromResource
+
+//---------------------------------------------------------------------------------
+
+- (void) getVertexShaderSourceFromResource:(NSString *)theVertexShaderResourceName
+{
+ vertexShaderSource = [self getShaderSourceFromResource:theVertexShaderResourceName
+ extension:@"vs" ];
+} // getVertexShaderSourceFromResource
+
+//---------------------------------------------------------------------------------
+
+- (GLhandleARB) loadShader:(GLenum)theShaderType
+ shaderSource:(const GLcharARB **)theShaderSource
+{
+ GLint shaderCompiled = 0;
+ GLhandleARB shaderHandle = LoadShader(theShaderType,
+ theShaderSource,
+ &shaderCompiled);
+
+ if( !shaderCompiled )
+ {
+ if( shaderHandle )
+ {
+ glDeleteObjectARB(shaderHandle);
+ shaderHandle = NULL;
+ } // if
+ } // if
+
+ return shaderHandle;
+} // loadShader
+
+//---------------------------------------------------------------------------------
+
+- (BOOL) newProgramObject:(GLhandleARB)theVertexShader
+ fragmentShaderHandle:(GLhandleARB)theFragmentShader
+{
+ GLint programLinked = 0;
+
+ // Create a program object and link both shaders
+
+ programObject = glCreateProgramObjectARB();
+
+ glAttachObjectARB(programObject, theVertexShader);
+ glDeleteObjectARB(theVertexShader); // Release
+
+ glAttachObjectARB(programObject, theFragmentShader);
+ glDeleteObjectARB(theFragmentShader); // Release
+
+ LinkProgram(programObject, &programLinked);
+
+ if( !programLinked )
+ {
+ glDeleteObjectARB(programObject);
+
+ programObject = NULL;
+
+ return NO;
+ } // if
+
+ return YES;
+} // newProgramObject
+
+//---------------------------------------------------------------------------------
+
+- (BOOL) setProgramObject
+{
+ BOOL programObjectSet = NO;
+
+ // Load and compile both shaders
+
+ GLhandleARB vertexShader = [self loadShader:GL_VERTEX_SHADER_ARB
+ shaderSource:&vertexShaderSource];
+
+ // Ensure vertex shader compiled
+
+ if( vertexShader != NULL )
+ {
+ GLhandleARB fragmentShader = [self loadShader:GL_FRAGMENT_SHADER_ARB
+ shaderSource:&fragmentShaderSource];
+
+ // Ensure fragment shader compiled
+
+ if( fragmentShader != NULL )
+ {
+ // Create a program object and link both shaders
+
+ programObjectSet = [self newProgramObject:vertexShader
+ fragmentShaderHandle:fragmentShader];
+ } // if
+ } // if
+
+ return programObjectSet;
+} // setProgramObject
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -- Designated Initializer --
+
+//---------------------------------------------------------------------------------
+
+- (id) initWithShadersInAppBundle:(NSString *)theShadersName
+{
+ self = [super init];
+
+ if( self)
+ {
+ BOOL loadedShaders = NO;
+
+ // Load vertex and fragment shader
+
+ [self getVertexShaderSourceFromResource:theShadersName];
+
+ if( vertexShaderSource != NULL )
+ {
+ [self getFragmentShaderSourceFromResource:theShadersName];
+
+ if( fragmentShaderSource != NULL )
+ {
+ loadedShaders = [self setProgramObject];
+
+ if( !loadedShaders)
+ {
+ NSLog(@">> WARNING: Failed to load GLSL \"%@\" fragment & vertex shaders!\n",
+ theShadersName);
+ } // if
+ } // if
+ } // if
+ } // if
+
+ return self;
+} // initWithShadersInAppBundle
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -- Deallocating Resources --
+
+//---------------------------------------------------------------------------------
+
+- (void) dealloc
+{
+ // Delete OpenGL resources
+
+ if( programObject )
+ {
+ glDeleteObjectARB(programObject);
+
+ programObject = NULL;
+ } // if
+
+ //Dealloc the superclass
+
+ [super dealloc];
+} // dealloc
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -- Accessors --
+
+//---------------------------------------------------------------------------------
+
+- (GLhandleARB) programObject
+{
+ return programObject;
+} // programObject
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -- Utilities --
+
+//---------------------------------------------------------------------------------
+
+- (GLint) getUniformLocation:(const GLcharARB *)theUniformName
+{
+ GLint uniformLoacation = glGetUniformLocationARB(programObject,
+ theUniformName);
+
+ if( uniformLoacation == -1 )
+ {
+ NSLog( @">> WARNING: No such uniform named \"%s\"\n", theUniformName );
+ } // if
+
+ return uniformLoacation;
+} // getUniformLocation
+
+//---------------------------------------------------------------------------------
+
+@end
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
diff --git a/GLSLBasicsCocoaDL/Sources/View/GLSLBasicsView.h b/GLSLBasicsCocoaDL/Sources/View/GLSLBasicsView.h
new file mode 100755
index 00000000..a00ac8ef
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/View/GLSLBasicsView.h
@@ -0,0 +1,95 @@
+//-------------------------------------------------------------------------
+//
+// File: GLSLBasicsView.h
+//
+// Abstract: Main rendering class
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2007-2008 Apple Inc., All rights reserved.
+//
+//-------------------------------------------------------------------------
+
+//-------------------------------------------------------------------------
+//
+// Required Includes
+//
+//-------------------------------------------------------------------------
+
+#import
+#import
+
+#import "GLUTString.h"
+#import "Shader.h"
+#import "TranguloidTrefoilGeometry.h"
+
+//-------------------------------------------------------------------------
+//
+// Custom OpenGL View
+//
+//-------------------------------------------------------------------------
+
+@interface GLSLBasicsView : NSOpenGLView
+{
+ @private
+ BOOL leftMouseIsDown; // was the left mouse button pressed?
+ BOOL rightMouseIsDown; // was the right mouse button pressed?
+ GLhandleARB programObject; // the program object
+ GLuint tranguloidTrefoilDL; // display list ID for the geometry
+ GLuint paletteID; // texture color palette
+ GLuint patternID; // texture color patterns
+ GLint locations[4]; // uniforms for the fragment & vertex shaders
+ GLfloat zoom; // zoom used for animation
+ GLfloat angle; // angle used for animation
+ GLfloat pitch; // pitch used for animation
+ GLfloat offset; // delta change for animation
+ NSPoint lastMousePoint; // last mouse point
+ NSRect bounds; // current view bounds
+ NSTimeInterval lastFrameReferenceTime; // used to compute change in time
+ NSTimer *timer; // timer to update the view content
+ NSString *infoString; // view bounds as string
+ GLUTString *info; // for displaying a string using GLUT bitmap fonts
+ TranguloidTrefoil *tranguloidTrefoil; // tranguloid trefoil geometry
+ Shader *plasma; // plasma fragemnt and vertex shaders
+} // OpenGLView
+
+@end
+
+//-------------------------------------------------------------------------
+
diff --git a/GLSLBasicsCocoaDL/Sources/View/GLSLBasicsView.m b/GLSLBasicsCocoaDL/Sources/View/GLSLBasicsView.m
new file mode 100755
index 00000000..0ce14e76
--- /dev/null
+++ b/GLSLBasicsCocoaDL/Sources/View/GLSLBasicsView.m
@@ -0,0 +1,1044 @@
+//---------------------------------------------------------------------------------
+//
+// File: GLSLBasicsView.m
+//
+// Abstract: Main rendering class
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2007-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#import "GLSLHardwareSupport.h"
+#import "GLSLBasicsView.h"
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Constatnts
+
+//---------------------------------------------------------------------------------
+
+static const GLfloat kPi = 3.1415927f; // IEEE-754 single precision
+static const GLint kFloatSize = sizeof(GLfloat);
+static const GLfloat kOffsetDelta = 1.0f/256.0f;
+static const GLdouble kViewRotationDegreesPerSecond = 20.0;
+static const NSTimeInterval kScheduledTimerInSeconds = 1.0f/120.0f;
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Private Enumerated Types
+
+//---------------------------------------------------------------------------------
+
+enum UniformLocations
+{
+ kUniformLightPosition = 0,
+ kUniformOffset,
+ kUniformPattern,
+ kUniformPalette
+};
+
+typedef enum UniformLocations UniformLocations;
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+
+//---------------------------------------------------------------------------------
+
+@implementation GLSLBasicsView
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Initialize 1D & 2D Textures
+
+//---------------------------------------------------------------------------------
+
+- (GLuint) initTexture1D:(const GLvoid *)thePixels
+ count:(const GLsizei)theCount
+{
+ GLuint textureID = 0;
+
+ glActiveTexture(GL_TEXTURE1);
+ glGenTextures(1, &textureID);
+ glBindTexture(GL_TEXTURE_1D, textureID);
+
+ glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+ glTexImage1D(GL_TEXTURE_1D,
+ 0,
+ GL_RGBA,
+ theCount,
+ 0,
+ GL_RGB,
+ GL_FLOAT,
+ thePixels);
+
+ return textureID;
+} // initTexture1D
+
+//---------------------------------------------------------------------------------
+
+- (GLuint) initTexture2D:(const GLvoid *)thePixels
+ width:(const GLsizei)theWidth
+ height:(const GLsizei)theHeight
+{
+ GLuint textureID = 0;
+
+ glActiveTexture(GL_TEXTURE0);
+ glGenTextures(1, &textureID);
+ glBindTexture(GL_TEXTURE_2D, textureID);
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ glTexImage2D(GL_TEXTURE_2D,
+ 0,
+ GL_RGBA,
+ theWidth,
+ theHeight,
+ 0,
+ GL_LUMINANCE,
+ GL_FLOAT,
+ thePixels);
+
+ return textureID;
+} // initTexture2D
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Initialize palette
+
+//---------------------------------------------------------------------------------
+
+- (void) initPalettePixels:(GLfloat *)thePixels
+ count:(const GLsizei)theCount
+{
+ GLfloat a = (GLfloat)theCount;
+ GLfloat b = 0.5f * a;
+ GLfloat c = 1.5f * a;
+ GLfloat d = 2.0f / a;
+ GLfloat x[2];
+ GLfloat n;
+ GLint i;
+ GLint j;
+
+ a = 1.0f / a;
+ c = 1.0f / c;
+
+ for( i = 0; i < theCount; i++ )
+ {
+ n = (GLfloat)i;
+
+ x[0] = kPi * n;
+ x[1] = sinf( a * x[0] );
+
+ j = 3 * i;
+
+ thePixels[j] = 1.0f - x[1];
+ thePixels[j+1] = b * c * ( 1.0f + sinf( d * x[0] ) );
+ thePixels[j+2] = x[1];
+ } // for
+} // initPalettePixels
+
+//---------------------------------------------------------------------------------
+
+- (void) initPalette
+{
+ GLsizei count = 256;
+ GLfloat *palettePixels = (GLfloat *)malloc( 3 * count * kFloatSize );
+
+ if( palettePixels != NULL )
+ {
+ [self initPalettePixels:palettePixels
+ count:count];
+
+ paletteID = [self initTexture1D:palettePixels
+ count:count];
+
+ free( palettePixels );
+
+ palettePixels = NULL;
+ } // if
+} // initPalette
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Initialize pattern
+
+//---------------------------------------------------------------------------------
+
+- (void) initPatternPixels:(GLfloat *)thePixels
+ width:(const GLsizei)theWidth
+ height:(const GLsizei)theHeight
+{
+ GLfloat a = (GLfloat)theWidth;
+ GLfloat b = 0.25f * a;
+ GLfloat c = 0.125f * a;
+ GLfloat f;
+ GLfloat x;
+ GLfloat y;
+ GLint i;
+ GLint iMax = theWidth >> 1;
+ GLint j;
+ GLint jMax = theHeight >> 1;
+ GLint k = theWidth - 1;
+ GLint l;
+ GLint m;
+ GLint n;
+
+ b = 1.0f / b;
+ c = 1.0f / c;
+
+ for( i = 0; i < iMax; i++ )
+ {
+ y = (GLfloat)i;
+
+ for( j = 0; j < jMax; j++ )
+ {
+ x = (GLfloat) j;
+ f = 0.25f*(sinf(b*x) + sinf(b*y) + sinf(b*(x+y)) + sinf(c*sqrtf(x*x+y*y)));
+
+ l = i * theWidth;
+ m = k * theWidth - l;
+ n = k - j;
+
+ thePixels[l+j] = f;
+ thePixels[l+n] = f;
+ thePixels[m+j] = f;
+ thePixels[m+n] = f;
+ } // for
+ } // for
+} // initPatternPixels
+
+//---------------------------------------------------------------------------------
+
+- (void) initPattern
+{
+ GLsizei width = 128;
+ GLsizei height = 128;
+ GLfloat *patternPixels = (GLfloat *)malloc(3 * width * height * kFloatSize);
+
+ if( patternPixels != NULL )
+ {
+ [self initPatternPixels:patternPixels
+ width:width
+ height:height];
+
+ patternID = [self initTexture2D:patternPixels
+ width:width
+ height:height];
+
+ free( patternPixels );
+
+ patternPixels = NULL;
+ } // if
+} // initPattern
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Setup OpenGL & shader uniforms
+
+//---------------------------------------------------------------------------------
+
+- (void) initShaderUniforms
+{
+ // Enable the program object
+
+ glUseProgramObjectARB(programObject);
+
+ // Store the values of the uniforms from the vertex
+ // and the fragment shaders
+
+ locations[kUniformLightPosition] = [plasma getUniformLocation:"LightPosition"];
+ locations[kUniformOffset] = [plasma getUniformLocation:"offset"];
+ locations[kUniformPattern] = [plasma getUniformLocation:"pattern"];
+ locations[kUniformPalette] = [plasma getUniformLocation:"palette"];
+
+ // Set the (x,y,z) coordinates of the light position
+
+ glUniform3fARB(locations[kUniformLightPosition], 0.0, 0.0, 20.0);
+
+ // Set the samplers
+
+ glUniform1iARB(locations[kUniformPattern], 0);
+ glUniform1iARB(locations[kUniformPalette], 1);
+
+ // Disable the program object
+
+ glUseProgramObjectARB(NULL);
+} // initShaderUniforms
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Setup OpenGL
+
+//---------------------------------------------------------------------------------
+
+- (void) initOpenGLStates
+{
+ [[self openGLContext] makeCurrentContext];
+
+ //-----------------------------------------------------------------
+ //
+ // For some OpenGL implementations, texture coordinates generated
+ // during rasterization aren't perspective correct. However, you
+ // can usually make them perspective correct by calling the API
+ // glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST). Colors
+ // generated at the rasterization stage aren't perspective correct
+ // in almost every OpenGL implementation, / and can't be made so.
+ // For this reason, you're more likely to encounter this problem
+ // with colors than texture coordinates.
+ //
+ //-----------------------------------------------------------------
+
+ glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST);
+
+ // Set up the projection
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+
+ glFrustum(-0.3, 0.3, 0.0, 0.6, 1.0, 8.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+ glTranslatef(0.0, 0.0, -2.0);
+
+ // Turn on depth test
+
+ glEnable(GL_DEPTH_TEST);
+
+ // front - or back - facing facets can be culled
+
+ glEnable(GL_CULL_FACE);
+} // initOpenGL
+
+//---------------------------------------------------------------------------------
+
+- (void) initTexturesForShader
+{
+ // Create the palette
+
+ [self initPalette];
+
+ // Create the plasma pattern
+
+ [self initPattern];
+} // initTexturesForShader
+
+//---------------------------------------------------------------------------------
+
+- (void) initGLSLShader
+{
+ // Initialize the plasma shader from the application bundle
+
+ plasma = [[Shader alloc] initWithShadersInAppBundle:@"Plasma"];
+
+ if( plasma )
+ {
+ // Get the program object for the plasma shader
+
+ programObject = [plasma programObject];
+
+ // Setup the uniforms for the plasma shader
+
+ [self initShaderUniforms];
+ } // if
+} // initGLSLShader
+
+//---------------------------------------------------------------------------------
+
+- (void) initOpenGLDisplayList
+{
+ tranguloidTrefoil = [[TranguloidTrefoil alloc] initTranguloidTrefoilWithAttribbutes:128
+ ratio:16];
+
+ if( tranguloidTrefoil )
+ {
+ tranguloidTrefoilDL = [tranguloidTrefoil displayList];
+ } // if
+} // initOpenGLDisplayList
+
+//---------------------------------------------------------------------------------
+
+ - (void) initGLUTString:(const NSRect *)theFrame
+{
+ NSSize size = theFrame->size;
+ GLsizei width = (GLsizei)size.width;
+ GLsizei height = (GLsizei)size.height;
+
+ NSPoint coordinates = NSMakePoint(10.0, 10.0);
+
+ info = [[GLUTString alloc] initWithViewSizeAndDrawCoordinates:&size
+ coordinates:&coordinates];
+
+ infoString = [[NSString alloc] initWithFormat:@"Bounds: %ld x %ld",width,height];
+} // initGLUTString
+
+//---------------------------------------------------------------------------------
+
+- (void) initOpenGL:(const NSRect *)theFrame
+{
+ [self initOpenGLStates];
+ [self initTexturesForShader];
+ [self initGLSLShader];
+ [self initOpenGLDisplayList];
+ [self initGLUTString:theFrame];
+} // initOpenGL
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Animation Timer
+
+//---------------------------------------------------------------------------------
+
+- (void) heartbeat
+{
+ [self drawRect:[self bounds]];
+} // heartbeat
+
+//---------------------------------------------------------------------------------
+
+- (void) initUpdateTimer
+{
+ timer = [NSTimer timerWithTimeInterval:kScheduledTimerInSeconds
+ target:self
+ selector:@selector(heartbeat)
+ userInfo:nil
+ repeats:YES];
+
+ [[NSRunLoop currentRunLoop] addTimer:timer
+ forMode:NSDefaultRunLoopMode];
+
+ [[NSRunLoop currentRunLoop] addTimer:timer
+ forMode:NSEventTrackingRunLoopMode];
+} // initUpdateTimer
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Initializations
+
+//---------------------------------------------------------------------------------
+
+- (void) initViewAttributes
+{
+
+ lastFrameReferenceTime = [NSDate timeIntervalSinceReferenceDate];
+
+ leftMouseIsDown = NO;
+ rightMouseIsDown = NO;
+
+ angle = 0.0f;
+ pitch = 25.0f;
+ zoom = 1.0f;
+
+ bounds.origin.x = 0.0f;
+ bounds.origin.y = 0.0f;
+ bounds.size.width = 0.0f;
+ bounds.size.height = 0.0f;
+} // initViewAttributes
+
+//---------------------------------------------------------------------------------
+//
+// Sync to VBL to avoid tearing.
+//
+//---------------------------------------------------------------------------------
+
+- (void) initSyncToVBL
+{
+ GLint swapInterval = 1;
+
+ [[self openGLContext] setValues:&swapInterval
+ forParameter:NSOpenGLCPSwapInterval];
+} // initSyncToVBL
+
+//---------------------------------------------------------------------------------
+
+- (void) initOpenGLView:(const NSRect *)theFrame
+{
+ // Setting the view's frame size
+
+ [self setFrameSize:theFrame->size];
+
+ // View attributes initilizations
+
+ [self initViewAttributes];
+
+ // New timer for updating OpenGL view
+
+ [self initUpdateTimer];
+
+ // Sync to VBL to avoid tearing
+
+ [self initSyncToVBL];
+
+ // OpenGL initializations
+
+ [self initOpenGL:theFrame];
+
+ // Did the frame change?
+
+ [self setPostsFrameChangedNotifications:YES];
+} // initOpenGLView
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Designated initializer
+
+//---------------------------------------------------------------------------------
+
+- (NSOpenGLPixelFormat *) initPixelFormat
+{
+ NSOpenGLPixelFormatAttribute pixelAttributes[]
+ = {
+ NSOpenGLPFADoubleBuffer,
+ NSOpenGLPFADepthSize, 24,
+ NSOpenGLPFAStencilSize, 8,
+ 0
+ };
+
+ CheckForGLSLHardwareSupport( pixelAttributes );
+
+ NSOpenGLPixelFormat *pixelFormat = [[[NSOpenGLPixelFormat alloc] initWithAttributes:pixelAttributes]
+ autorelease];
+
+ return pixelFormat;
+} // initPixelFormat
+
+//---------------------------------------------------------------------------------
+
+- (id) initWithFrame:(NSRect)theFrame
+ pixelFormat:(NSOpenGLPixelFormat *)thePixelFormat
+{
+ // Create a GL Context to use - i.e. init the superclass
+
+ if( thePixelFormat == nil )
+ {
+ thePixelFormat = [self initPixelFormat];
+ } // if
+
+ self = [super initWithFrame:theFrame
+ pixelFormat:thePixelFormat];
+
+ if( self )
+ {
+ [self initOpenGLView:&theFrame];
+ } // if
+
+ return self;
+} // initWithFrame
+
+//---------------------------------------------------------------------------------
+
+- (id) initWithFrame:(NSRect)theFrame
+{
+ return [self initWithFrame:theFrame
+ pixelFormat:nil];
+} // initWithFrame
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Deallocating Resources
+
+//---------------------------------------------------------------------------------
+
+- (void) deallocTimer
+{
+ if( timer )
+ {
+ [timer invalidate];
+ [timer release];
+
+ timer = nil;
+ } // if
+} // deallocTimer
+
+//---------------------------------------------------------------------------------
+
+- (void) deallocOpenGLResources
+{
+ if( tranguloidTrefoil )
+ {
+ [tranguloidTrefoil release];
+
+ tranguloidTrefoil = nil;
+ } // if
+
+ if( patternID )
+ {
+ glDeleteTextures(1, &patternID);
+ } // if
+
+ if( paletteID )
+ {
+ glDeleteTextures(1, &paletteID);
+ } // if
+
+ if( plasma )
+ {
+ [plasma release];
+
+ plasma = nil;
+ } // if
+
+ if( info )
+ {
+ [info release];
+
+ info = nil;
+ } // if
+
+ if( infoString )
+ {
+ [infoString release];
+
+ infoString = nil;
+ } // if
+} //deallocOpenGLResources
+
+//---------------------------------------------------------------------------------
+
+- (void) dealloc
+{
+ // Release the update timer
+
+ [self deallocTimer];
+
+ // Delete OpenGL resources
+
+ [self deallocOpenGLResources];
+
+ //Dealloc the superclass
+
+ [super dealloc];
+} // dealloc
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Binding palette & pattern
+
+//---------------------------------------------------------------------------------
+
+- (void) bindPalette
+{
+ glActiveTexture(GL_TEXTURE1);
+ glBindTexture(GL_TEXTURE_1D, paletteID);
+} // bindPalette
+
+//---------------------------------------------------------------------------------
+
+- (void) bindPattern
+{
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, patternID);
+} // bindPattern
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Updating Drawing Parameters
+
+//---------------------------------------------------------------------------------
+
+- (void) updateOffset
+{
+ offset += kOffsetDelta;
+
+ if( offset > 1.0f )
+ {
+ offset = 0.0f;
+ } // if
+} // updateOffset
+
+//---------------------------------------------------------------------------------
+
+- (NSTimeInterval) updateTimeDelta
+{
+ NSTimeInterval timeNow = [NSDate timeIntervalSinceReferenceDate];
+ NSTimeInterval timeDelta = timeNow - lastFrameReferenceTime;
+
+ return timeDelta;
+} // updateTimeDelta
+
+//---------------------------------------------------------------------------------
+
+- (void) updatePitch
+{
+ if( pitch < -45.0f )
+ {
+ pitch = -45.0f;
+ } // if
+ else if( pitch > 90.0f )
+ {
+ pitch = 90.0f;
+ } // else if
+
+ glRotatef(pitch, 1.0f, 0.0f, 0.0f);
+} // updatePitch
+
+//---------------------------------------------------------------------------------
+
+- (void) updateAngle
+{
+ if( !leftMouseIsDown && !rightMouseIsDown )
+ {
+ NSTimeInterval updateTimeDelta = [self updateTimeDelta];
+
+ angle += kViewRotationDegreesPerSecond * updateTimeDelta;
+
+ if( angle >= 360.0f )
+ {
+ angle -= 360.0f;
+ } // if
+ } // if
+
+ // update object rotation
+
+ glRotatef( angle, 0.0f, 1.0f, 0.0f );
+
+ // reset time in all cases
+
+ lastFrameReferenceTime = [NSDate timeIntervalSinceReferenceDate];
+} // updateAngle
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Updating & Resizing
+
+//---------------------------------------------------------------------------------
+
+- (void) updatePrespectiveMatrix
+{
+ GLdouble width = (GLdouble)NSWidth(bounds);
+ GLdouble height = (GLdouble)NSHeight(bounds);
+ GLdouble aspect = width / height;
+ GLdouble right = 0.15 * aspect * zoom;
+ GLdouble left = -right;
+ GLdouble top = 0.15 * zoom;
+ GLdouble bottom = -top;
+ GLdouble zNear = 1.0;
+ GLdouble zFar = 8.0;
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+
+ glFrustum(left, right, bottom, top, zNear, zFar);
+
+ glMatrixMode(GL_MODELVIEW);
+} // updatePrespectiveMatrix
+
+//---------------------------------------------------------------------------------
+//
+// Handles resizing/updating of OpenGL needs context update and if the window
+// dimensions change, window dimensions update, reseting of viewport and an update
+// of the projection matrix.
+//
+//---------------------------------------------------------------------------------
+
+- (void) resizeView
+{
+ NSRect viewBounds = [self bounds];
+
+ if( !NSEqualRects( viewBounds, bounds ) )
+ {
+ GLsizei width = (GLsizei)NSWidth(viewBounds);
+ GLsizei height = (GLsizei)NSHeight(viewBounds);
+
+ // GLUT string object needs to know the view bounds have changed as well
+
+ if( infoString )
+ {
+ [infoString release];
+
+ infoString = nil;
+ } // if
+
+ infoString = [[NSString alloc] initWithFormat:@"Bounds: %ld x %ld",width,height];
+
+ [info setViewSize:&viewBounds.size];
+
+ // Update the view bounds
+
+ bounds = viewBounds;
+
+ // Prespective matrix & the OpenGL view needs an update as well
+
+ [self updatePrespectiveMatrix];
+
+ // View port has changed as well
+
+ glViewport(0, 0, width, height);
+ } // if
+} // resizeView
+
+//---------------------------------------------------------------------------------
+//
+// Window resizes, moves and display changes.
+//
+//---------------------------------------------------------------------------------
+
+- (void) update
+{
+ [super update];
+} // update
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Draw Utilities
+
+//---------------------------------------------------------------------------------
+
+- (void) drawBegin
+{
+ [[self openGLContext] makeCurrentContext];
+
+ [self resizeView];
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glClearColor(0.075f, 0.075f, 0.075f, 1.0f);
+
+ glPushMatrix();
+} // drawBegin
+
+//---------------------------------------------------------------------------------
+
+- (void) drawEnd
+{
+ glPopMatrix();
+
+ [info drawString:infoString];
+
+ [[self openGLContext] flushBuffer];
+} // drawEnd
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Drawing Utilities
+
+//---------------------------------------------------------------------------------
+
+- (void) scaleModel
+{
+ glScalef(0.055f, 0.055f, 0.055f);
+
+ // Use our display list
+
+ glCallList(tranguloidTrefoilDL);
+} // scaleModel
+
+//---------------------------------------------------------------------------------
+
+- (void) applyShader
+{
+ // Bind the shader
+
+ glUseProgramObjectARB(programObject);
+
+ // Modify offset uniform
+
+ glUniform1fvARB(locations[kUniformOffset], 1, &offset);
+
+ // Use our display list
+
+ [self scaleModel];
+
+ // Unbind the shader
+
+ glUseProgramObjectARB(NULL);
+} // applyShader
+
+//---------------------------------------------------------------------------------
+
+- (void) drawModel
+{
+ [self bindPalette];
+
+ [self bindPattern];
+
+ [self applyShader];
+
+ [self updateOffset];
+} // drawModel
+
+//---------------------------------------------------------------------------------
+
+-(void) updateModel
+{
+ // Constant rotation of the subject
+
+ [self updatePitch];
+
+ [self updateAngle];
+
+ // Draw the model
+
+ [self drawModel];
+} // updateModel
+
+//---------------------------------------------------------------------------------
+
+- (void) drawRect:(NSRect)theRect
+{
+ [self drawBegin];
+
+ [self updateModel];
+
+ [self drawEnd];
+} // drawRect
+
+//---------------------------------------------------------------------------------
+
+#pragma mark -
+#pragma mark Handling mouse events
+
+//---------------------------------------------------------------------------------
+
+- (void)mouseDown:(NSEvent *)theEvent
+{
+ lastMousePoint = [self convertPoint:[theEvent locationInWindow]
+ fromView:nil];
+ leftMouseIsDown = YES;
+} // mouseDown
+
+//---------------------------------------------------------------------------------
+
+- (void)rightMouseDown:(NSEvent *)theEvent
+{
+ lastMousePoint = [self convertPoint:[theEvent locationInWindow]
+ fromView:nil];
+ rightMouseIsDown = YES;
+} // rightMouseDown
+
+//---------------------------------------------------------------------------------
+
+- (void)mouseUp:(NSEvent *)theEvent
+{
+ leftMouseIsDown = NO;
+} // mouseUp
+
+//---------------------------------------------------------------------------------
+
+- (void)rightMouseUp:(NSEvent *)theEvent
+{
+ rightMouseIsDown = NO;
+} // rightMouseUp
+
+//---------------------------------------------------------------------------------
+
+- (void)mouseDragged:(NSEvent *)theEvent
+{
+ if( [theEvent modifierFlags] & NSRightMouseDown )
+ {
+ [self rightMouseDragged:theEvent];
+ } // if
+ else
+ {
+ NSPoint mouse = [self convertPoint:[theEvent locationInWindow]
+ fromView:nil];
+
+ pitch += lastMousePoint.y - mouse.y;
+ angle -= lastMousePoint.x - mouse.x;
+
+ lastMousePoint = mouse;
+
+ [self setNeedsDisplay:YES];
+ } // else
+} // mouseDragged
+
+//---------------------------------------------------------------------------------
+
+- (void)rightMouseDragged:(NSEvent *)theEvent
+{
+ NSPoint mouse = [self convertPoint:[theEvent locationInWindow]
+ fromView:nil];
+
+ zoom += 0.01f * (lastMousePoint.y - mouse.y);
+
+ if( zoom < 0.05f )
+ {
+ zoom = 0.05f;
+ } // if
+ else if( zoom > 2.0f )
+ {
+ zoom = 2.0f;
+ } // else if
+
+ lastMousePoint = mouse;
+
+ [self updatePrespectiveMatrix];
+
+ [self setNeedsDisplay:YES];
+} // rightMouseDragged
+
+//---------------------------------------------------------------------------------
+
+@end
+
+//---------------------------------------------------------------------------------
+
+//---------------------------------------------------------------------------------
+
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Info.plist b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Info.plist
new file mode 100644
index 00000000..b5308ef4
--- /dev/null
+++ b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Info.plist
@@ -0,0 +1,30 @@
+
+
+
+
+ CFBundleDevelopmentRegion
+ English
+ CFBundleExecutable
+ GLSLBasicsCocoaDL
+ CFBundleIconFile
+ SimpleFBOIcon
+ CFBundleIdentifier
+ com.apple.GLSLBasicsCocoaDL
+ CFBundleInfoDictionaryVersion
+ 6.0
+ CFBundleName
+ GLSLBasicsCocoaDL
+ CFBundlePackageType
+ APPL
+ CFBundleSignature
+ ????
+ CFBundleVersion
+ 1.2
+ LSMinimumSystemVersion
+ 10.5
+ NSMainNibFile
+ MainMenu
+ NSPrincipalClass
+ NSApplication
+
+
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/MacOS/GLSLBasicsCocoaDL b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/MacOS/GLSLBasicsCocoaDL
new file mode 100755
index 00000000..d76f3ec5
Binary files /dev/null and b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/MacOS/GLSLBasicsCocoaDL differ
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/PkgInfo b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/PkgInfo
new file mode 100644
index 00000000..bd04210f
--- /dev/null
+++ b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/PkgInfo
@@ -0,0 +1 @@
+APPL????
\ No newline at end of file
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/InfoPlist.strings b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/InfoPlist.strings
new file mode 100644
index 00000000..e0938285
Binary files /dev/null and b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/InfoPlist.strings differ
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/MainMenu.nib/designable.nib b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/MainMenu.nib/designable.nib
new file mode 100644
index 00000000..d710d4a8
--- /dev/null
+++ b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/MainMenu.nib/designable.nib
@@ -0,0 +1,719 @@
+
+
+
+ 1050
+ 9E17
+ 670
+ 949.33
+ 352.00
+
+
+
+
+
+ 0
+ ../GLSLBasicsCocoaDL.xcodeproj
+ 3
+
+
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/MainMenu.nib/keyedobjects.nib b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/MainMenu.nib/keyedobjects.nib
new file mode 100644
index 00000000..52d228e7
Binary files /dev/null and b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/English.lproj/MainMenu.nib/keyedobjects.nib differ
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/Plasma.fs b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/Plasma.fs
new file mode 100755
index 00000000..df978046
--- /dev/null
+++ b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/Plasma.fs
@@ -0,0 +1,63 @@
+//---------------------------------------------------------------------------
+//
+// File: Plasma.frag
+//
+// Abstract: GLSL Plasma fragment shader
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2004-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+uniform sampler1D palette;
+uniform sampler2D pattern;
+uniform float offset;
+varying float LightIntensity;
+
+void main()
+{
+ vec4 color;
+ color = texture2D(pattern, gl_TexCoord[0].st);
+ color = texture1D(palette, (color.r+offset));
+ color.a = 1.0;
+ color = color * LightIntensity;
+ color = clamp(color, 0.0, 1.0);
+ gl_FragColor = color;
+}
diff --git a/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/Plasma.vs b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/Plasma.vs
new file mode 100755
index 00000000..121c0f2f
--- /dev/null
+++ b/GLSLBasicsCocoaDL/app/Release/GLSLBasicsCocoaDL.app/Contents/Resources/Plasma.vs
@@ -0,0 +1,62 @@
+//---------------------------------------------------------------------------
+//
+// File: Plasma.vert
+//
+// Abstract: GLSL Plasma vertex shader
+//
+// Disclaimer: IMPORTANT: This Apple software is supplied to you by
+// Inc. ("Apple") in consideration of your agreement to the following terms,
+// and your use, installation, modification or redistribution of this Apple
+// software constitutes acceptance of these terms. If you do not agree with
+// these terms, please do not use, install, modify or redistribute this
+// Apple software.
+//
+// In consideration of your agreement to abide by the following terms, and
+// subject to these terms, Apple grants you a personal, non-exclusive
+// license, under Apple's copyrights in this original Apple software (the
+// "Apple Software"), to use, reproduce, modify and redistribute the Apple
+// Software, with or without modifications, in source and/or binary forms;
+// provided that if you redistribute the Apple Software in its entirety and
+// without modifications, you must retain this notice and the following
+// text and disclaimers in all such redistributions of the Apple Software.
+// Neither the name, trademarks, service marks or logos of Apple Inc. may
+// be used to endorse or promote products derived from the Apple Software
+// without specific prior written permission from Apple. Except as
+// expressly stated in this notice, no other rights or licenses, express
+// or implied, are granted by Apple herein, including but not limited to
+// any patent rights that may be infringed by your derivative works or by
+// other works in which the Apple Software may be incorporated.
+//
+// The Apple Software is provided by Apple on an "AS IS" basis. APPLE
+// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+//
+// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2004-2008 Apple Inc., All rights reserved.
+//
+//---------------------------------------------------------------------------
+
+varying float LightIntensity;
+uniform vec3 LightPosition;
+
+void main()
+{
+ vec4 ECposition = gl_ModelViewMatrix * gl_Vertex;
+ vec3 tnorm = normalize(vec3 (gl_NormalMatrix * gl_Normal));
+
+ LightIntensity = dot(normalize(LightPosition - vec3 (ECposition)), tnorm) * 1.5;
+
+ gl_Position = ftransform();
+
+ gl_TexCoord[0] = gl_MultiTexCoord0;
+}
diff --git a/GLSLBasicsCocoaDL/info.plist b/GLSLBasicsCocoaDL/info.plist
new file mode 100755
index 00000000..47c66bd2
--- /dev/null
+++ b/GLSLBasicsCocoaDL/info.plist
@@ -0,0 +1,30 @@
+
+
+
+
+ CFBundleDevelopmentRegion
+ English
+ CFBundleExecutable
+ ${EXECUTABLE_NAME}
+ CFBundleIconFile
+ SimpleFBOIcon
+ CFBundleIdentifier
+ com.apple.GLSLBasicsCocoaDL
+ CFBundleInfoDictionaryVersion
+ 6.0
+ CFBundleName
+ ${PRODUCT_NAME}
+ CFBundlePackageType
+ APPL
+ CFBundleSignature
+ ????
+ CFBundleVersion
+ 1.2
+ NSMainNibFile
+ MainMenu
+ NSPrincipalClass
+ NSApplication
+ LSMinimumSystemVersion
+ 10.5
+
+