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, 274 insertions, 0 deletions

diff --git a/progs/windml/uglline.c b/progs/windml/uglline.c
new file mode 100644
index 000000000..e58f071ea
--- /dev/null
+++ b/progs/windml/uglline.c
@@ -0,0 +1,274 @@
+
+/* uglline.c - WindML/Mesa example program */
+
+/*
+ * 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.
+ */
+
+/*
+modification history
+--------------------
+01a,jun01,sra  Ported to UGL/Mesa and modifications
+*/
+
+/*
+DESCRIPTION
+Draw circular lines
+*/
+
+#include <stdio.h>
+#include <math.h>
+
+#include <ugl/ugl.h>
+#include <ugl/uglucode.h>
+#include <ugl/uglevent.h>
+#include <ugl/uglinput.h>
+
+#include <GL/uglmesa.h>
+#include <GL/glu.h>
+
+#define BLACK     (0)
+#define YELLOW    (1)
+#define GREEN     (2)
+#define BLUE      (3)
+#define CI_OFFSET  4
+
+UGL_LOCAL GLuint rgb;
+UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId;
+UGL_LOCAL UGL_EVENT_Q_ID qId;
+UGL_LOCAL volatile UGL_BOOL stopWex;
+UGL_LOCAL UGL_MESA_CONTEXT umc;
+
+UGL_LOCAL GLboolean mode1, mode2;
+UGL_LOCAL GLint size;
+
+UGL_LOCAL GLfloat pntA[3] = {
+    -10.0, 0.0, 0.0
+};
+UGL_LOCAL GLfloat pntB[3] = {
+    -5.0, 0.0, 0.0
+};
+
+UGL_LOCAL GLint angleA;
+
+UGL_LOCAL void initGL (void)
+    {    
+    GLint i;
+
+    uglMesaSetColor(BLACK, 0.0, 0.0, 0.0);
+    uglMesaSetColor(YELLOW, 1.0, 1.0, 0.0);
+    uglMesaSetColor(GREEN, 0.0, 1.0, 0.0);
+    uglMesaSetColor(BLUE, 0.0, 0.0, 1.0);
+    
+    for (i = 0; i < 16; i++)
+	{
+	uglMesaSetColor(CI_OFFSET+i, i/15.0, i/15.0, 0.0);
+	}
+    
+    glClearColor(0.0, 0.0, 0.0, 0.0);
+    glClearIndex(BLACK);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-10, 10, -10, 10, -10.0, 10.0);
+
+    glMatrixMode(GL_MODELVIEW);
+    
+    glLineStipple(1, 0xF0E0);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+
+    mode1 = GL_FALSE;
+    mode2 = GL_FALSE;
+    size = 1;
+    }
+
+UGL_LOCAL void drawGL (void)
+    {
+    
+    GLint ci, i;
+
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    glLineWidth(size);
+
+    if (mode1) {
+	glEnable(GL_LINE_STIPPLE);
+    } else {
+	glDisable(GL_LINE_STIPPLE);
+    }
+
+    if (mode2) {
+	ci = CI_OFFSET;
+	glEnable(GL_LINE_SMOOTH);
+	glEnable(GL_BLEND);
+    } else {
+	ci = YELLOW;
+	glDisable(GL_LINE_SMOOTH);
+	glDisable(GL_BLEND);
+    }
+
+    glPushMatrix();
+
+    glRotatef(angleA, 1, 0, 1);
+    angleA = angleA++ % 360;
+   
+    for (i = 0; i < 360; i += 5) {
+	glRotatef(5.0, 0, 0, 1);
+
+	glColor3f(1.0, 1.0, 0.0);
+	glBegin(GL_LINE_STRIP);
+	    glVertex3fv(pntA);
+	    glVertex3fv(pntB);
+	glEnd();
+
+	glPointSize(1);
+	
+	glColor3f(0.0, 1.0, 0.0);
+	glBegin(GL_POINTS);
+	glVertex3fv(pntA);
+	glVertex3fv(pntB);
+	glEnd();
+    }
+    
+    glPopMatrix();
+
+    glFlush();
+
+    uglMesaSwapBuffers();
+
+    }    
+
+UGL_LOCAL void echoUse(void)
+    {
+    printf("tLine keys:\n");
+    printf("           b  Blending/antialiasing\n");
+    printf("           n  Line stipple\n");
+    printf("     Up/Down  Pixel size\n");
+    printf("         ESC  Exit\n");
+    }
+
+UGL_LOCAL void readKey (UGL_WCHAR key)
+    {
+    switch(key)
+	{
+	case 'n':
+	    mode1 = (mode1) ? GL_FALSE: GL_TRUE;
+	    break;
+	case 'b':
+	    mode2 = (mode2) ? GL_FALSE: GL_TRUE;
+	    break;
+	case UGL_UNI_DOWN_ARROW:
+	    if(size>0)
+		size--;
+	    break;
+	case UGL_UNI_UP_ARROW:
+	    size++;
+	    break; 
+	case UGL_UNI_ESCAPE:
+	    stopWex = UGL_TRUE;
+	    break;
+	}
+    }
+
+UGL_LOCAL void loopEvent(void)
+    {
+    UGL_EVENT event;
+    UGL_INPUT_EVENT * pInputEvent;
+ 
+    UGL_FOREVER
+	{
+	if (uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT)
+	    != UGL_STATUS_Q_EMPTY)
+            {
+	    pInputEvent = (UGL_INPUT_EVENT *)&event;
+	    
+	    if (pInputEvent->header.type == UGL_EVENT_TYPE_KEYBOARD &&
+		pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN)
+		readKey(pInputEvent->type.keyboard.key);
+	    }
+
+	drawGL();
+	if (stopWex)
+            break;
+	}
+    }
+
+void windMLLine (UGL_BOOL windMLMode);
+
+void uglline (void)
+    {
+    taskSpawn("tLine", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLLine,
+              UGL_FALSE,1,2,3,4,5,6,7,8,9);
+    }
+
+
+void windMLLine(UGL_BOOL windMLMode)
+    {
+
+    UGL_INPUT_DEVICE_ID keyboardDevId;
+
+    angleA = 0;
+    
+    uglInitialize();
+
+    uglDriverFind (UGL_KEYBOARD_TYPE, 0, (UGL_UINT32 *)&keyboardDevId);
+
+    uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId);
+
+    qId = uglEventQCreate (eventServiceId, 100);
+
+    /* Double buffer */
+
+    if (windMLMode)
+       umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE
+				     | UGL_MESA_WINDML_EXCLUSIVE, NULL);
+	else
+	   umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE, NULL);
+
+    if (umc == NULL)
+        {
+	uglDeinitialize();
+	return;
+        }
+
+    /* Fullscreen */
+
+    uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH,
+			      UGL_MESA_FULLSCREEN_HEIGHT);
+
+    uglMesaGetIntegerv(UGL_MESA_RGB, &rgb);
+    
+    initGL();
+
+    echoUse();
+
+    stopWex = UGL_FALSE;
+    loopEvent();
+        
+    uglEventQDestroy(eventServiceId, qId);
+
+    uglMesaDestroyContext();
+    uglDeinitialize();
+
+    return;
+    }