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path: root/nx-X11/extras/Mesa_6.4.1/progs/samples/depth.c
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Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/progs/samples/depth.c')
-rw-r--r--nx-X11/extras/Mesa_6.4.1/progs/samples/depth.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/progs/samples/depth.c b/nx-X11/extras/Mesa_6.4.1/progs/samples/depth.c
new file mode 100644
index 000000000..afe2ec17a
--- /dev/null
+++ b/nx-X11/extras/Mesa_6.4.1/progs/samples/depth.c
@@ -0,0 +1,209 @@
+/*
+ * 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>
+
+
+#define CI_OFFSET_1 16
+#define CI_OFFSET_2 32
+
+
+GLenum rgb, doubleBuffer;
+
+GLenum antiAlias, stipple;
+GLubyte stippleBits[32*4] = {
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+ 0xAA, 0xAA, 0xAA, 0xAA, 0x55, 0x55, 0x55, 0x55,
+};
+
+
+#include "tkmap.c"
+
+static void Init(void)
+{
+ GLint i;
+
+ glClearColor(0.0, 0.0, 0.0, 0.0);
+ glClearIndex(0.0);
+
+ if (!rgb) {
+ for (i = 0; i < 16; i++) {
+ glutSetColor(i+CI_OFFSET_1, 0.0, 0.0, i/15.0);
+ glutSetColor(i+CI_OFFSET_2, 0.0, i/15.0, 0.0);
+ }
+ }
+
+ glPolygonStipple(stippleBits);
+
+ antiAlias = GL_FALSE;
+ stipple = GL_FALSE;
+}
+
+static void Reshape(int width, int height)
+{
+
+ glViewport(0, 0, (GLint)width, (GLint)height);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+ glMatrixMode(GL_MODELVIEW);
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+
+ switch (key) {
+ case 27:
+ exit(1);
+ case '1':
+ antiAlias = !antiAlias;
+ break;
+ case '2':
+ stipple = !stipple;
+ break;
+ default:
+ return;
+ }
+
+ glutPostRedisplay();
+}
+
+static void Draw(void)
+{
+ GLint ci1, ci2;
+
+ glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
+
+ if (antiAlias) {
+ ci1 = CI_OFFSET_1;
+ ci2 = CI_OFFSET_2;
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+ glEnable(GL_BLEND);
+ glEnable(GL_POLYGON_SMOOTH);
+ glDisable(GL_DEPTH_TEST);
+ } else {
+ ci1 = COLOR_BLUE;
+ ci2 = COLOR_GREEN;
+ glDisable(GL_BLEND);
+ glDisable(GL_POLYGON_SMOOTH);
+ glEnable(GL_DEPTH_TEST);
+ }
+
+ if (stipple) {
+ glEnable(GL_POLYGON_STIPPLE);
+ } else {
+ glDisable(GL_POLYGON_STIPPLE);
+ }
+
+ glBegin(GL_TRIANGLES);
+ (rgb) ? glColor3fv(RGBMap[COLOR_BLUE]) : glIndexi(ci1);
+ glVertex3f( 0.9, -0.9, -30.0);
+ glVertex3f( 0.9, 0.9, -30.0);
+ glVertex3f(-0.9, 0.0, -30.0);
+ (rgb) ? glColor3fv(RGBMap[COLOR_GREEN]) : glIndexi(ci2);
+ glVertex3f(-0.9, -0.9, -40.0);
+ glVertex3f(-0.9, 0.9, -40.0);
+ glVertex3f( 0.9, 0.0, -25.0);
+ glEnd();
+
+ glFlush();
+
+ if (doubleBuffer) {
+ glutSwapBuffers();
+ }
+}
+
+static GLenum Args(int argc, char **argv)
+{
+ GLint i;
+
+ rgb = GL_TRUE;
+ doubleBuffer = GL_FALSE;
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "-ci") == 0) {
+ rgb = GL_FALSE;
+ } else if (strcmp(argv[i], "-rgb") == 0) {
+ rgb = GL_TRUE;
+ } else if (strcmp(argv[i], "-sb") == 0) {
+ doubleBuffer = GL_FALSE;
+ } else if (strcmp(argv[i], "-db") == 0) {
+ doubleBuffer = GL_TRUE;
+ } else {
+ printf("%s (Bad option).\n", argv[i]);
+ return GL_FALSE;
+ }
+ }
+ return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+ GLenum type;
+
+ glutInit(&argc, argv);
+
+ if (Args(argc, argv) == GL_FALSE) {
+ exit(1);
+ }
+
+ glutInitWindowPosition(0, 0); glutInitWindowSize( 300, 300);
+
+ type = GLUT_DEPTH;
+ type |= (rgb) ? GLUT_RGB : GLUT_INDEX;
+ type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+ glutInitDisplayMode(type);
+
+ if (glutCreateWindow("Depth Test") == GL_FALSE) {
+ exit(1);
+ }
+
+ InitMap();
+
+ Init();
+
+ glutReshapeFunc(Reshape);
+ glutKeyboardFunc(Key);
+ glutDisplayFunc(Draw);
+ glutMainLoop();
+ return 0;
+}