Checked in experimental Cg support and a couple of small demos. By

default it is not built and javadoc is not generated for it. The demos
are not compiled by the jogl-demos project makefile since there are
issues to be thought through with operations like
cgCreateProgramFromFile and their interaction with launching over the
web via Java Web Start.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@8 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

2 files changed, 307 insertions, 0 deletions

diff --git a/src/demos/cg/runtime_ogl/cgGL_vertex_example.cg b/src/demos/cg/runtime_ogl/cgGL_vertex_example.cg
new file mode 100644
index 0000000..dae355e
--- /dev/null
+++ b/src/demos/cg/runtime_ogl/cgGL_vertex_example.cg
@@ -0,0 +1,29 @@
+
+struct appdata
+{
+    float4 position : POSITION;
+    float3 normal : NORMAL;
+    float3 color : DIFFUSE;
+    float3 TestColor : SPECULAR;
+};
+
+struct vfconn
+{
+    float4 HPOS : POSITION;
+    float4 COL0 : COLOR0;
+};
+
+vfconn main(appdata IN,
+            uniform float4 Kd,
+            uniform float4x4 ModelViewProj)
+{
+    vfconn OUT;
+
+    OUT.HPOS = mul(ModelViewProj, IN.position);
+
+    OUT.COL0.xyz = Kd.xyz * IN.TestColor.xyz;
+    OUT.COL0.w = 1.0;
+
+    return OUT;
+} // main
+
diff --git a/src/demos/cg/runtime_ogl/cgGL_vertex_example.java b/src/demos/cg/runtime_ogl/cgGL_vertex_example.java
new file mode 100644
index 0000000..16c3e1a
--- /dev/null
+++ b/src/demos/cg/runtime_ogl/cgGL_vertex_example.java
@@ -0,0 +1,278 @@
+/*
+ * Portions Copyright (C) 2003 Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+/*
+ *
+ * COPYRIGHT NVIDIA CORPORATION 2003. ALL RIGHTS RESERVED.
+ * BY ACCESSING OR USING THIS SOFTWARE, YOU AGREE TO:
+ *
+ *  1) ACKNOWLEDGE NVIDIA'S EXCLUSIVE OWNERSHIP OF ALL RIGHTS
+ *     IN AND TO THE SOFTWARE;
+ *
+ *  2) NOT MAKE OR DISTRIBUTE COPIES OF THE SOFTWARE WITHOUT
+ *     INCLUDING THIS NOTICE AND AGREEMENT;
+ *
+ *  3) ACKNOWLEDGE THAT TO THE MAXIMUM EXTENT PERMITTED BY
+ *     APPLICABLE LAW, THIS SOFTWARE IS PROVIDED *AS IS* AND
+ *     THAT NVIDIA AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES,
+ *     EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED
+ *     TO, IMPLIED WARRANTIES OF MERCHANTABILITY  AND FITNESS
+ *     FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL NVIDIA OR ITS SUPPLIERS BE LIABLE FOR ANY
+ * SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES
+ * WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS
+ * OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
+ * INFORMATION, OR ANY OTHER PECUNIARY LOSS), INCLUDING ATTORNEYS'
+ * FEES, RELATING TO THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+ * EVEN IF NVIDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+
+import net.java.games.cg.*;
+import net.java.games.jogl.*;
+
+import java.awt.*;
+import java.awt.event.*;
+
+/**
+ * cgGL_vertex_example: simple demo of Nvidia CgGL API. Based upon C version
+ * distributed with the NVidia Cg Toolkit. Ported to the Java language by
+ * Christopher Kline 5/29/2003.
+ */
+public class cgGL_vertex_example implements GLEventListener 
+{
+  
+  /******************************************************************************/
+  /*** Static Data                                                            ***/
+  /******************************************************************************/
+
+  private final int TextureRes = 512;
+  
+  private static CGcontext Context = null;
+  private static CGprogram Program = null;
+  private static CGparameter KdParam = null;
+  private static CGparameter ModelViewProjParam = null;
+  private static CGparameter TestColorParam = null;
+  private static /*CGprofile*/ int profile;
+  
+  static
+  {
+    String os = System.getProperty("os.name").toLowerCase();
+    profile = os.startsWith("mac os") ? CgGL.CG_PROFILE_ARBVP1 : CgGL.CG_PROFILE_VP20;
+  }
+  
+  private float LightDiffuse[] = {1.0f, 0.0f, 0.0f, 1.0f};  
+  private float LightPosition[] = {1.0f, 1.0f, 1.0f, 0.0f};  
+
+  private float CubeNormals[/*6*/][/*3*/] = 
+  {  
+    {-1.0f, 0.0f, 0.0f}, {0.0f, 1.0f, 0.0f},
+    {1.0f, 0.0f, 0.0f}, {0.0f, -1.0f, 0.0f},
+    {0.0f, 0.0f, 1.0f}, {0.0f, 0.0f, -1.0f} 
+  };
+
+  private int CubeFaces[/*6*/][/*4*/] = 
+  {  
+    {0, 1, 2, 3}, {3, 2, 6, 7}, {7, 6, 5, 4},
+    {4, 5, 1, 0}, {5, 6, 2, 1}, {7, 4, 0, 3} 
+  };
+
+  private float CubeVertices[][] = new float[8][3];  
+
+/******************************************************************************/
+
+  private int MATRIX_INDEX(int i, int j) { return (j + i * 4); }
+
+  private static void CheckCgError()
+  {
+    /*CGerror*/ int err = CgGL.cgGetError();
+
+    if (err != CgGL.CG_NO_ERROR)
+    {
+      System.out.println("CG error: " + CgGL.cgGetErrorString(err));
+      System.exit(1);
+    }
+  }
+
+
+  private void DrawCube(GL gl)
+  {
+    int i;
+
+    CgGL.cgGLBindProgram(Program);
+    CheckCgError();
+
+    /*
+     * Set various uniform parameters including the ModelViewProjection
+     * matrix for transforming the incoming position into HPOS.
+     */
+    if(KdParam != null)
+      CgGL.cgGLSetParameter4f(KdParam, 1.0f, 1.0f, 0.0f, 1.0f);
+    
+    /* Set the concatenate modelview and projection matrices */
+    if(ModelViewProjParam != null)
+      CgGL.cgGLSetStateMatrixParameter(ModelViewProjParam,
+                                  CgGL.CG_GL_MODELVIEW_PROJECTION_MATRIX,
+                                  CgGL.CG_GL_MATRIX_IDENTITY);
+
+    CgGL.cgGLEnableProfile(profile);
+
+
+    /*
+     * Create cube with per-vertex varying attributes 
+     */
+    for(i = 0; i < 6; i++) 
+    {
+      gl.glBegin(GL.GL_QUADS);
+
+      gl.glNormal3f(CubeNormals[i][0], CubeNormals[i][1], CubeNormals[i][0]);
+      CgGL.cgGLSetParameter3f(TestColorParam, 1.0f, 0.0f, 0.0f);
+      float[] verts = CubeVertices[CubeFaces[i][0]];
+      gl.glVertex3f(verts[0], verts[1], verts[2]);
+
+      CgGL.cgGLSetParameter3f(TestColorParam, 0.0f, 1.0f, 0.0f);
+      verts = CubeVertices[CubeFaces[i][1]];
+      gl.glVertex3f(verts[0], verts[1], verts[2]);
+
+      CgGL.cgGLSetParameter3f(TestColorParam, 0.0f, 0.0f, 1.0f);
+      verts = CubeVertices[CubeFaces[i][2]];
+      gl.glVertex3f(verts[0], verts[1], verts[2]);
+
+      CgGL.cgGLSetParameter3f(TestColorParam, 1.0f, 1.0f, 1.0f);
+      verts = CubeVertices[CubeFaces[i][3]];
+      gl.glVertex3f(verts[0], verts[1], verts[2]);
+    
+      gl.glEnd();
+    }
+
+    CgGL.cgGLDisableProfile(profile);
+  }
+
+  public void display(GLDrawable drawable) 
+  {
+    GL gl = drawable.getGL();
+    gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+    DrawCube(gl);
+    //glutSwapBuffers();
+  }
+
+  void InitializeCube(float v[/*8*/][/*3*/])
+  {
+    /* Setup cube vertex data. */
+    v[0][0] = v[1][0] = v[2][0] = v[3][0] = -1;
+    v[4][0] = v[5][0] = v[6][0] = v[7][0] = 1;
+    v[0][1] = v[1][1] = v[4][1] = v[5][1] = -1;
+    v[2][1] = v[3][1] = v[6][1] = v[7][1] = 1;
+    v[0][2] = v[3][2] = v[4][2] = v[7][2] = 1;
+    v[1][2] = v[2][2] = v[5][2] = v[6][2] = -1;
+  }
+  
+  public void displayChanged(GLDrawable drawable, boolean modeChanged, boolean deviceChanged)
+  {
+    // nothing
+  }
+
+  public void init(GLDrawable drawable) 
+  {
+    // Note: we initialize Cg in this init() method instead of main()
+    // because Cg (apparently) requires an active OpenGL context in order to
+    // initialize correctly (otherwise the CheckCgError() call after
+    // cgGLLoadProgram() will fail).
+    
+    /* Test cgContext creation */
+    Context = CgGL.cgCreateContext();
+    CheckCgError();
+
+    /* Test adding source text to context */
+    Program = CgGL.cgCreateProgramFromFile(
+      Context, CgGL.CG_SOURCE, "cgGL_vertex_example.cg",
+      profile, null, null);
+    CheckCgError();
+
+    System.err.println(
+      "LAST LISTING----" + CgGL.cgGetLastListing(Context) + "----\n");
+
+    System.err.println(
+      "---- PROGRAM BEGIN ----\n"+
+      CgGL.cgGetProgramString(Program, CgGL.CG_COMPILED_PROGRAM)+
+      "---- PROGRAM END ----\n");
+
+    if(Program != null)
+    {
+      CgGL.cgGLLoadProgram(Program);
+      CheckCgError();
+
+      KdParam = CgGL.cgGetNamedParameter(Program, "Kd");
+      CheckCgError();
+
+      ModelViewProjParam = CgGL.cgGetNamedParameter(Program, "ModelViewProj");
+      CheckCgError();
+
+      TestColorParam = CgGL.cgGetNamedParameter(Program, "IN.TestColor");
+      CheckCgError();
+    }
+    GL gl = drawable.getGL();
+    GLU glu = drawable.getGLU();
+
+    InitializeCube(CubeVertices);
+
+    /* Enable a single OpenGL light. */
+    gl.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, LightDiffuse);
+    gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, LightPosition);
+    gl.glEnable(GL.GL_LIGHT0);
+    if (false) { // #if 0
+      gl.glEnable(GL.GL_LIGHTING);
+    } else {     // #else
+      gl.glDisable(GL.GL_LIGHTING);
+    }            // #endif
+
+    /* Use depth buffering for hidden surface elimination. */
+    gl.glEnable(GL.GL_DEPTH_TEST);
+
+    /* Setup the view of the cube. */
+    gl.glMatrixMode(GL.GL_PROJECTION);
+    glu.gluPerspective( /* field of view in degree */ 40.0f,
+                    /* aspect ratio */ 1.0f,
+                    /* Z near */ 1.0f, /* Z far */ 10.0f);
+    gl.glMatrixMode(GL.GL_MODELVIEW);
+    glu.gluLookAt(0.0f, 0.0f, 5.0f,  /* eye is at (0,0,5) */
+              0.0f, 0.0f, 0.0f,  /* center is at (0,0,0) */
+              0.0f, 1.0f, 0.);  /* up is in positive Y direction */
+
+    /* Adjust cube position to be asthetic angle. */
+    gl.glTranslatef(0.0f, 0.0f, -1.0f);
+    if (true) { // #if 1
+      gl.glRotatef(60, 1.0f, 0.0f, 0.0f);
+      gl.glRotatef(-20, 0.0f, 0.0f, 1.0f);
+    } //#endif
+  
+  }
+
+  public void reshape(GLDrawable drawable, int x, int y, int width, int height)
+  {
+    // do nothing
+  }
+
+  public static void main(String[] argv)
+  {    
+    Frame frame = new Frame("NVidia Cg Toolkit \"cgGL_vertex_example\" demo");
+    GLCanvas canvas = GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities());
+    canvas.addGLEventListener(new cgGL_vertex_example());
+
+    frame.add(canvas);
+    frame.setSize(500, 500);
+    final Animator animator = new Animator(canvas);
+    frame.addWindowListener(new WindowAdapter() {
+        public void windowClosing(WindowEvent e) {
+          animator.stop();
+          System.exit(0);
+        }
+      });
+    frame.show();
+    animator.start();
+  }
+
+}