Squashed 'nx-X11/extras/Mesa_6.4.2/' content from commit 475b1f7

git-subtree-dir: nx-X11/extras/Mesa_6.4.2
git-subtree-split: 475b1f7b56fa36ef4f3b22a749f88a98ddc0d502

1 files changed, 242 insertions, 0 deletions

diff --git a/progs/windml/uglstencil.c b/progs/windml/uglstencil.c
new file mode 100644
index 000000000..07e8fc626
--- /dev/null
+++ b/progs/windml/uglstencil.c
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+
+/* Copyright (c) Mark J. Kilgard, 1994. */
+
+/*
+ * (c) Copyright 1993, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "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, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States.  Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+ */
+/*  stencil.c
+ *  This program draws two rotated tori in a window.
+ *  A diamond in the center of the window masks out part
+ *  of the scene.  Within this mask, a different model
+ *  (a sphere) is drawn in a different color.
+ */
+
+/*
+ * Conversion to UGL/Mesa by Stephane Raimbault, 2001
+ */
+
+#include <stdio.h>
+#include <math.h>
+
+#include <ugl/ugl.h>
+#include <ugl/uglevent.h>
+#include <ugl/uglinput.h>
+
+#include <GL/uglmesa.h>
+#include <GL/glu.h>
+#include <GL/uglglutshapes.h>
+
+#define YELLOWMAT   1
+#define BLUEMAT 2
+
+UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId;
+UGL_LOCAL UGL_EVENT_Q_ID qId;
+UGL_LOCAL UGL_MESA_CONTEXT umc;
+
+UGL_LOCAL void initGL (GLsizei w, GLsizei h)
+    {
+    GLfloat yellow_diffuse[] = { 0.7, 0.7, 0.0, 1.0 };
+    GLfloat yellow_specular[] = { 1.0, 1.0, 1.0, 1.0 };
+
+    GLfloat blue_diffuse[] = { 0.1, 0.1, 0.7, 1.0 };
+    GLfloat blue_specular[] = { 0.1, 1.0, 1.0, 1.0 };
+
+    GLfloat position_one[] = { 1.0, 1.0, 1.0, 0.0 };
+
+    glNewList(YELLOWMAT, GL_COMPILE);
+    glMaterialfv(GL_FRONT, GL_DIFFUSE, yellow_diffuse);
+    glMaterialfv(GL_FRONT, GL_SPECULAR, yellow_specular);
+    glMaterialf(GL_FRONT, GL_SHININESS, 64.0);
+    glEndList();
+
+    glNewList(BLUEMAT, GL_COMPILE);
+    glMaterialfv(GL_FRONT, GL_DIFFUSE, blue_diffuse);
+    glMaterialfv(GL_FRONT, GL_SPECULAR, blue_specular);
+    glMaterialf(GL_FRONT, GL_SHININESS, 45.0);
+    glEndList();
+
+    glLightfv(GL_LIGHT0, GL_POSITION, position_one);
+
+    glEnable(GL_LIGHT0);
+    glEnable(GL_LIGHTING);
+    glDepthFunc(GL_LESS);
+    glEnable(GL_DEPTH_TEST);
+
+    glClearStencil(0x0);
+    glEnable(GL_STENCIL_TEST);
+
+    glClear(GL_STENCIL_BUFFER_BIT);
+
+/* create a diamond shaped stencil area */
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-3.0, 3.0, -3.0, 3.0, -1.0, 1.0);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+
+    glStencilFunc (GL_ALWAYS, 0x1, 0x1);
+    glStencilOp (GL_REPLACE, GL_REPLACE, GL_REPLACE);
+    glBegin(GL_QUADS);
+	glVertex3f (-1.0, 0.0, 0.0);
+	glVertex3f (0.0, 1.0, 0.0);
+	glVertex3f (1.0, 0.0, 0.0);
+	glVertex3f (0.0, -1.0, 0.0);
+    glEnd();
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluPerspective(45.0, (GLfloat) w/(GLfloat) h, 3.0, 7.0);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    glTranslatef(0.0, 0.0, -5.0);
+    }
+
+/*  Draw a sphere in a diamond-shaped section in the
+ *  middle of a window with 2 tori.
+ */
+UGL_LOCAL void drawGL(void)
+    {
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
+
+/* draw blue sphere where the stencil is 1 */
+    glStencilFunc (GL_EQUAL, 0x1, 0x1);
+    glCallList (BLUEMAT);
+    glutSolidSphere (0.5, 15, 15);
+ 
+/* draw the tori where the stencil is not 1 */
+    glStencilFunc (GL_NOTEQUAL, 0x1, 0x1);
+    glPushMatrix();
+       glRotatef (45.0, 0.0, 0.0, 1.0);
+       glRotatef (45.0, 0.0, 1.0, 0.0);
+       glCallList (YELLOWMAT);
+       glutSolidTorus (0.275, 0.85, 15, 15);
+       glPushMatrix();
+          glRotatef (90.0, 1.0, 0.0, 0.0);
+	  glutSolidTorus (0.275, 0.85, 15, 15);
+       glPopMatrix();
+    glPopMatrix();
+
+    glFlush();
+
+    uglMesaSwapBuffers();
+    }
+
+UGL_LOCAL int getEvent(void)
+    {
+    UGL_EVENT event;
+    UGL_STATUS status;
+    int retVal = 0;
+
+    status = uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT);
+
+    while (status != UGL_STATUS_Q_EMPTY)
+        {
+	UGL_INPUT_EVENT * pInputEvent = (UGL_INPUT_EVENT *)&event;
+	
+	if (pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN)
+	    retVal = 1;
+
+	status = uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT);
+        }
+ 
+    return(retVal);
+    }
+
+void windMLStencil (UGL_BOOL windMLMode);
+
+void uglstencil (void)
+    {
+    taskSpawn("tStencil", 210, VX_FP_TASK, 100000,
+	      (FUNCPTR)windMLStencil,UGL_FALSE,1,2,3,4,5,6,7,8,9);
+    }
+
+void windMLStencil(UGL_BOOL windMLMode)
+    {
+    UGL_INPUT_DEVICE_ID keyboardDevId;
+    GLsizei width, height;
+    
+    uglInitialize();
+    
+    uglDriverFind (UGL_KEYBOARD_TYPE, 0, (UGL_UINT32 *)&keyboardDevId);
+    
+    uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId);
+	    
+    qId = uglEventQCreate (eventServiceId, 100);
+
+    if (windMLMode)
+       umc = uglMesaCreateNewContextExt(UGL_MESA_SINGLE
+					| UGL_MESA_WINDML_EXCLUSIVE,
+					16,
+					8,
+					0,0,0,0,
+					NULL);
+    else
+       umc = uglMesaCreateNewContextExt(UGL_MESA_SINGLE,
+					16,
+					8,
+					0,0,0,0,
+					NULL);
+
+    if (umc == NULL)
+	{
+	uglDeinitialize();
+	return;
+	}
+
+    /* Fullscreen */
+
+    uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH,
+			      UGL_MESA_FULLSCREEN_HEIGHT);
+    
+    uglMesaGetIntegerv(UGL_MESA_WIDTH, &width);
+    uglMesaGetIntegerv(UGL_MESA_HEIGHT, &height);
+    
+    initGL(width, height);
+
+    drawGL();
+	    
+    while (!getEvent());
+	    
+    uglEventQDestroy (eventServiceId, qId);
+    
+    uglMesaDestroyContext();
+    uglDeinitialize();
+    
+    return;
+    }
+