Import Mesa 6.5.1 (MesaLib, MesaDemos, MesaGLUT).

1 files changed, 428 insertions, 0 deletions

diff --git a/progs/windml/uglgears.c b/progs/windml/uglgears.c
new file mode 100644
index 00000000000..468fe899806
--- /dev/null
+++ b/progs/windml/uglgears.c
@@ -0,0 +1,428 @@
+
+/* uglgears.c - WindML/Mesa example program */
+
+/*
+ * 3-D gear wheels.  This program is in the public domain.
+ *
+ * Brian Paul
+ *
+ * Conversion to GLUT by Mark J. Kilgard
+ * Conversion to UGL/Mesa from GLUT by Stephane Raimbault
+ */
+
+/*
+DESCRIPTION
+Spinning gears demo
+*/
+
+#include <stdio.h>
+#include <math.h>
+#include <tickLib.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>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#define COUNT_FRAMES
+
+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 GLfloat view_rotx, view_roty, view_rotz;
+UGL_LOCAL GLint gear1, gear2, gear3;
+UGL_LOCAL GLfloat angle;
+
+UGL_LOCAL GLuint limit;
+UGL_LOCAL GLuint count;
+UGL_LOCAL GLuint tickStart, tickStop, tickBySec;
+
+
+/*
+* Draw a gear wheel.  You'll probably want to call this function when
+* building a display list since we do a lot of trig here.
+*
+* Input:  inner_radius - radius of hole at center
+*         outer_radius - radius at center of teeth
+*         width - width of gear
+*         teeth - number of teeth
+*         tooth_depth - depth of tooth
+*/
+
+UGL_LOCAL void gear
+    (
+    GLfloat inner_radius,
+    GLfloat outer_radius,
+    GLfloat width,
+    GLint teeth,
+    GLfloat tooth_depth
+    )
+    {
+    GLint i;
+    GLfloat r0, r1, r2;
+    GLfloat angle, da;
+    GLfloat u, v, len;
+
+    r0 = inner_radius;
+    r1 = outer_radius - tooth_depth/2.0;
+    r2 = outer_radius + tooth_depth/2.0;
+    
+    da = 2.0*M_PI / teeth / 4.0;
+    
+    glShadeModel (GL_FLAT);
+    
+    glNormal3f (0.0, 0.0, 1.0);
+    
+    /* draw front face */
+    glBegin (GL_QUAD_STRIP);
+    for (i=0;i<=teeth;i++)
+        {
+	angle = i * 2.0*M_PI / teeth;
+	glVertex3f (r0*cos (angle), r0*sin (angle), width*0.5);
+	glVertex3f (r1*cos (angle), r1*sin (angle), width*0.5);
+	glVertex3f (r0*cos (angle), r0*sin (angle), width*0.5);
+	glVertex3f (r1*cos (angle+3*da), r1*sin (angle+3*da), width*0.5);
+	}
+    glEnd ();
+
+    /* draw front sides of teeth */
+    glBegin (GL_QUADS);
+    da = 2.0*M_PI / teeth / 4.0;
+    for (i=0; i<teeth; i++)
+        {
+	angle = i * 2.0*M_PI / teeth;
+
+	glVertex3f (r1*cos (angle),      r1*sin (angle),      width*0.5);
+	glVertex3f (r2*cos (angle+da),   r2*sin (angle+da),   width*0.5);
+	glVertex3f (r2*cos (angle+2*da), r2*sin (angle+2*da), width*0.5);
+	glVertex3f (r1*cos (angle+3*da), r1*sin (angle+3*da), width*0.5);
+	}
+    glEnd ();
+
+
+    glNormal3f (0.0, 0.0, -1.0);
+
+    /* draw back face */
+    glBegin (GL_QUAD_STRIP);
+    for (i=0; i<=teeth ;i++)
+        {
+	angle = i * 2.0*M_PI / teeth;
+	glVertex3f (r1*cos (angle), r1*sin (angle), -width*0.5);
+	glVertex3f (r0*cos (angle), r0*sin (angle), -width*0.5);
+	glVertex3f (r1*cos (angle+3*da), r1*sin (angle+3*da), -width*0.5);
+	glVertex3f (r0*cos (angle), r0*sin (angle), -width*0.5);
+	}
+    glEnd ();
+
+    /* draw back sides of teeth */
+    glBegin (GL_QUADS);
+    da = 2.0*M_PI / teeth / 4.0;
+    for (i=0;i<teeth;i++)
+        {
+	angle = i * 2.0*M_PI / teeth;
+
+	glVertex3f (r1*cos (angle+3*da), r1*sin (angle+3*da), -width*0.5);
+	glVertex3f (r2*cos (angle+2*da), r2*sin (angle+2*da), -width*0.5);
+	glVertex3f (r2*cos (angle+da),   r2*sin (angle+da),   -width*0.5);
+	glVertex3f (r1*cos (angle),      r1*sin (angle),      -width*0.5);
+	}
+    glEnd ();
+
+
+    /* draw outward faces of teeth */
+    glBegin (GL_QUAD_STRIP);
+    for (i=0;i<teeth;i++)
+        {
+	angle = i * 2.0*M_PI / teeth;
+
+	glVertex3f (r1*cos (angle),      r1*sin (angle),       width*0.5);
+	glVertex3f (r1*cos (angle),      r1*sin (angle),      -width*0.5);
+	u = r2*cos (angle+da) - r1*cos (angle);
+	v = r2*sin (angle+da) - r1*sin (angle);
+	len = sqrt (u*u + v*v);
+	u /= len;
+	v /= len;
+	glNormal3f (v, -u, 0.0);
+	glVertex3f (r2*cos (angle+da),   r2*sin (angle+da),    width*0.5);
+	glVertex3f (r2*cos (angle+da),   r2*sin (angle+da),   -width*0.5);
+	glNormal3f (cos (angle), sin (angle), 0.0);
+	glVertex3f (r2*cos (angle+2*da), r2*sin (angle+2*da),  width*0.5);
+	glVertex3f (r2*cos (angle+2*da), r2*sin (angle+2*da), -width*0.5);
+	u = r1*cos (angle+3*da) - r2*cos (angle+2*da);
+	v = r1*sin (angle+3*da) - r2*sin (angle+2*da);
+	glNormal3f (v, -u, 0.0);
+	glVertex3f (r1*cos (angle+3*da), r1*sin (angle+3*da),  width*0.5);
+	glVertex3f (r1*cos (angle+3*da), r1*sin (angle+3*da), -width*0.5);
+	glNormal3f (cos (angle), sin (angle), 0.0);
+        }
+
+    glVertex3f (r1*cos (0), r1*sin (0), width*0.5);
+    glVertex3f (r1*cos (0), r1*sin (0), -width*0.5);
+    
+    glEnd ();
+    
+    glShadeModel (GL_SMOOTH);
+    
+    /* draw inside radius cylinder */
+    glBegin (GL_QUAD_STRIP);
+    for (i=0;i<=teeth;i++)
+        {
+	angle = i * 2.0*M_PI / teeth;
+	glNormal3f (-cos (angle), -sin (angle), 0.0);
+	glVertex3f (r0*cos (angle), r0*sin (angle), -width*0.5);
+	glVertex3f (r0*cos (angle), r0*sin (angle), width*0.5);
+	} 
+    glEnd ();
+      
+}
+
+UGL_LOCAL void drawGL (void)
+    {
+#ifdef COUNT_FRAMES
+    int time;
+#endif
+    
+    angle += 2.0;
+
+    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    glPushMatrix ();
+    glRotatef (view_rotx, 1.0, 0.0, 0.0);
+    glRotatef (view_roty, 0.0, 1.0, 0.0);
+    glRotatef (view_rotz, 0.0, 0.0, 1.0);
+
+    glPushMatrix ();
+    glTranslatef (-3.0, -2.0, 0.0);
+    glRotatef (angle, 0.0, 0.0, 1.0);
+    glCallList (gear1);
+    glPopMatrix ();
+
+    glPushMatrix ();
+    glTranslatef (3.1, -2.0, 0.0);
+    glRotatef (-2.0*angle-9.0, 0.0, 0.0, 1.0);
+    glCallList (gear2);
+    glPopMatrix ();
+
+    glPushMatrix ();
+    glTranslatef (-3.1, 4.2, 0.0);
+    glRotatef (-2.0*angle-25.0, 0.0, 0.0, 1.0);
+    glCallList (gear3);
+    glPopMatrix ();
+
+    glPopMatrix ();
+
+    glFlush();
+    
+    uglMesaSwapBuffers ();
+
+#ifdef COUNT_FRAMES
+    if (count > limit)
+        {
+	tickStop = tickGet ();
+	time = (tickStop-tickStart)/tickBySec;
+	printf (" %i fps\n", count/time);
+	tickStart = tickStop;
+	count = 0;
+        }
+    else 
+	count++;
+#endif
+}
+
+
+UGL_LOCAL void initGL (GLsizei width, GLsizei height)
+    {
+    UGL_LOCAL GLfloat pos[4] = {5.0, 5.0, 10.0, 1.0 };
+    UGL_LOCAL GLfloat red[4] = {0.8, 0.1, 0.0, 1.0 };
+    UGL_LOCAL GLfloat green[4] = {0.0, 0.8, 0.2, 1.0 };
+    UGL_LOCAL GLfloat blue[4] = {0.2, 0.2, 1.0, 1.0 };
+
+    glLightfv (GL_LIGHT0, GL_POSITION, pos);
+    glEnable (GL_CULL_FACE);
+    glEnable (GL_LIGHTING);
+    glEnable (GL_LIGHT0);
+    glEnable (GL_DEPTH_TEST);
+
+    /* make the gears */
+    gear1 = glGenLists (1);
+    glNewList (gear1, GL_COMPILE);
+    glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
+    gear (1.0, 4.0, 1.0, 20, 0.7);
+    glEndList ();
+
+    gear2 = glGenLists (1);
+    glNewList (gear2, GL_COMPILE);
+    glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
+    gear (0.5, 2.0, 2.0, 10, 0.7);
+    glEndList ();
+
+    gear3 = glGenLists (1);
+    glNewList (gear3, GL_COMPILE);
+    glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
+    gear (1.3, 2.0, 0.5, 10, 0.7);
+    glEndList ();
+
+    glEnable (GL_NORMALIZE);
+
+    glViewport (0, 0, width, height);
+
+    glMatrixMode (GL_PROJECTION);
+    glLoadIdentity ();
+    if (width>height)
+        {
+	GLfloat w = (GLfloat) width / (GLfloat) height;
+	glFrustum (-w, w, -1.0, 1.0, 5.0, 60.0);
+        }
+    else
+        {
+	GLfloat h = (GLfloat) height / (GLfloat) width;
+	glFrustum (-1.0, 1.0, -h, h, 5.0, 60.0);
+        }
+
+    glMatrixMode (GL_MODELVIEW);
+    glLoadIdentity ();
+    glTranslatef (0.0, 0.0, -40.0);
+
+#ifdef COUNT_FRAMES
+    tickStart = tickGet ();
+    tickBySec = sysClkRateGet ();
+#endif
+}
+
+UGL_LOCAL void echoUse(void)
+    {
+    printf("tGears keys:\n");
+    printf("           z  Counter clockwise rotation (z-axis)\n");
+    printf("           Z  Clockwise rotation (z-axis)\n");
+    printf("          Up  Counter clockwise rotation (x-axis)\n");
+    printf("        Down  Clockwise rotation (x-axis)\n");
+    printf("        Left  Counter clockwise rotation (y-axis)\n");
+    printf("       Right  Clockwise rotation (y-axis)\n");
+    printf("         ESC  Exit\n");
+    }
+
+
+UGL_LOCAL void readKey (UGL_WCHAR key)
+    {
+    
+    switch(key)
+	{
+	case 'z':
+	    view_rotz += 5.0;
+	    break;
+	case 'Z':
+	    view_rotz -= 5.0;
+	    break;
+	case UGL_UNI_UP_ARROW:
+	    view_rotx += 5.0;
+	    break;
+	case UGL_UNI_DOWN_ARROW:
+	    view_rotx -= 5.0;
+	    break;
+	case UGL_UNI_LEFT_ARROW:
+	    view_roty += 5.0;
+	    break;
+	case UGL_UNI_RIGHT_ARROW:
+	    view_roty -= 5.0;
+	    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 windMLGears (UGL_BOOL windMLMode);
+
+void uglgears (void)
+    {
+    taskSpawn ("tGears", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLGears,
+	       UGL_FALSE,1,2,3,4,5,6,7,8,9);
+    }
+
+void windMLGears (UGL_BOOL windMLMode)
+    {
+    GLsizei width, height;
+    UGL_INPUT_DEVICE_ID keyboardDevId;
+    
+    view_rotx=20.0;
+    view_roty=30.0;
+    view_rotz=0.0;
+    angle = 0.0;
+    limit = 100;
+    count = 1;
+
+    uglInitialize ();
+
+    uglDriverFind (UGL_KEYBOARD_TYPE, 0,
+		   (UGL_UINT32 *)&keyboardDevId);
+
+    uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId);
+
+    qId = uglEventQCreate (eventServiceId, 100);
+
+    /* Double buffering */
+    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_WIDTH, &width);
+    uglMesaGetIntegerv(UGL_MESA_HEIGHT, &height);
+    
+    initGL (width, height);
+
+    echoUse();
+
+    stopWex = UGL_FALSE;
+    loopEvent();
+        
+    uglEventQDestroy (eventServiceId, qId);
+
+    uglMesaDestroyContext();
+    uglDeinitialize ();
+
+    return;
+    }