Demos (cmake): tri-edgeflag-array: test glEdgeFlagPointer()

[Jose Fonseca]

Module: Demos
Branch: cmake
Commit: 18a67fd7ab5ebf69297df1bebbabb923c1dd252e
URL:    http://cgit.freedesktop.org/mesa/demos/commit/?id=18a67fd7ab5ebf69297df1bebbabb923c1dd252e

Author: Brian Paul <brianp at vmware.com>
Date:   Tue Nov  2 08:29:53 2010 -0600

tri-edgeflag-array: test glEdgeFlagPointer()

---

 src/trivial/Makefile.am          |    1 +
 src/trivial/tri-edgeflag-array.c |  119 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+), 0 deletions(-)

diff --git a/src/trivial/Makefile.am b/src/trivial/Makefile.am
index bca6a7c..e5db0c6 100644
--- a/src/trivial/Makefile.am
+++ b/src/trivial/Makefile.am
@@ -128,6 +128,7 @@ bin_PROGRAMS = \
 	tri-cull \
 	tri-dlist \
 	tri-edgeflag \
+	tri-edgeflag-array \
 	trifan \
 	trifan-flat \
 	trifan-flat-clip \
diff --git a/src/trivial/tri-edgeflag-array.c b/src/trivial/tri-edgeflag-array.c
new file mode 100644
index 0000000..61fed02
--- /dev/null
+++ b/src/trivial/tri-edgeflag-array.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+static GLenum frontface = GL_CCW;
+
+
+static void
+Init(void)
+{
+   fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+   fprintf(stderr, "GL_VERSION  = %s\n", (char *) glGetString(GL_VERSION));
+   fprintf(stderr, "GL_VENDOR   = %s\n", (char *) glGetString(GL_VENDOR));
+   fflush(stderr);
+}
+
+
+static void
+Reshape(int width, int height)
+{
+   glViewport(0, 0, (GLint)width, (GLint)height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glMatrixMode(GL_MODELVIEW);
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+   switch (key) {
+   case 'f':
+      frontface = (frontface == GL_CCW) ? GL_CW : GL_CCW;
+      glFrontFace(frontface);
+      break;
+   case 27:
+      exit(1);
+   default:
+      return;
+   }
+   glutPostRedisplay();
+}
+
+
+static void
+Draw(void)
+{
+   static GLboolean flags[3] = { 1, 0, 1};
+   static GLfloat color[3][3] = {
+      { 0.3, 0.3, 0.9 },
+      { 0.8, 0.0, 0.0 },
+      { 0.0, 0.9, 0.0 }
+   };
+   static GLfloat vert[3][3] = {
+      { 0.9, -0.9, 0.0 },
+      { 0.9, 0.9, 0.0 },
+      { -0.9, 0.0, 0.0 }
+   };
+
+   glClear(GL_COLOR_BUFFER_BIT); 
+   glPolygonMode(GL_FRONT, GL_LINE);
+   glPolygonMode(GL_BACK, GL_POINT);
+
+   glVertexPointer(3, GL_FLOAT, 0, vert);
+   glColorPointer(3, GL_FLOAT, 0, color);
+   glEdgeFlagPointer(0, flags);
+   glEnableClientState(GL_VERTEX_ARRAY);
+   glEnableClientState(GL_COLOR_ARRAY);
+   glEnableClientState(GL_EDGE_FLAG_ARRAY);
+
+   glDrawArrays(GL_TRIANGLES, 0, 3);
+
+   glutSwapBuffers();
+}
+
+
+int
+main(int argc, char **argv)
+{
+   glutInit(&argc, argv);
+
+   glutInitWindowPosition(0, 0);
+   glutInitWindowSize( 250, 250);
+   glutInitDisplayMode(GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE);
+   if (!glutCreateWindow(*argv)) {
+      exit(1);
+   }
+   glutReshapeFunc(Reshape);
+   glutKeyboardFunc(Key);
+   glutDisplayFunc(Draw);
+   Init();
+   glutMainLoop();
+   return 0;
+}