/*
* Copyright 1995, Silicon Graphics, Inc.
* ALL RIGHTS RESERVED
*
* This source code ("Source Code") was originally derived from a
* code base owned by Silicon Graphics, Inc. ("SGI")
*
* LICENSE: SGI grants the user ("Licensee") permission to reproduce,
* distribute, and create derivative works from this Source Code,
* provided that: (1) the user reproduces this entire notice within
* both source and binary format redistributions and any accompanying
* materials such as documentation in printed or electronic format;
* (2) the Source Code is not to be used, or ported or modified for
* use, except in conjunction with OpenGL Performer; and (3) the
* names of Silicon Graphics, Inc. and SGI may not be used in any
* advertising or publicity relating to the Source Code without the
* prior written permission of SGI. No further license or permission
* may be inferred or deemed or construed to exist with regard to the
* Source Code or the code base of which it forms a part. All rights
* not expressly granted are reserved.
*
* This Source Code is provided to Licensee AS IS, without any
* warranty of any kind, either express, implied, or statutory,
* including, but not limited to, any warranty that the Source Code
* will conform to specifications, any implied warranties of
* merchantability, fitness for a particular purpose, and freedom
* from infringement, and any warranty that the documentation will
* conform to the program, or any warranty that the Source Code will
* be error free.
*
* IN NO EVENT WILL SGI BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT
* LIMITED TO DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES,
* ARISING OUT OF, RESULTING FROM, OR IN ANY WAY CONNECTED WITH THE
* SOURCE CODE, WHETHER OR NOT BASED UPON WARRANTY, CONTRACT, TORT OR
* OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
* PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM,
* OR AROSE OUT OF USE OR RESULTS FROM USE OF, OR LACK OF ABILITY TO
* USE, THE SOURCE CODE.
*
* Contact information: Silicon Graphics, Inc.,
* 1600 Amphitheatre Pkwy, Mountain View, CA 94043,
* or: http://www.sgi.com
*
* cliptex.c
*
* OpenGL Performer example program overflying a clip-textured flat terrain.
* This program is designed to be used as a simple example/test program for
* those doing clip-textured terrain.
*
* $Revision: 1.1 $
* $Date: 2000/11/21 21:39:36 $
*
* Command-line options:
* -b : norborder window
* -f : full screen
* -2 : two windows
* -c : cliptexture configuration file
* -F : put X input handling in a forked process
* -m procsplit : multiprocess mode
* -w : write scene to file
*
* Run-time controls:
* ESC-key: exits
* F1-key: profile
* Left-mouse: advance
* Middle-mouse: stop
* Right-mouse: retreat
* d or D: delete cliptexture
* l or L: load cliptexture
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <signal.h> /* for sigset for forked X event handler process */
#include <getopt.h> /* for cmdline handler */
#include <X11/keysym.h>
#include <Performer/pf.h>
#include <Performer/pfutil.h>
#include <Performer/pfdu.h>
#include <sys/types.h>
#include <sys/stat.h>
#define MAX_WINDOWS 3
#define POLYSIZE 1000.f
/*
* structure that resides in shared memory so that the
* application, cull, and draw processes can access it.
*/
typedef struct
{
pfPipeWindow *pw[MAX_WINDOWS];
pfChannel *chan[MAX_WINDOWS];
int exitFlag;
int deleteClipTex;
int inWindow, reset;
float mouseX, mouseY;
int winSizeX, winSizeY;
int mouseButtons;
pfCoord view, viewOrig;
float sceneSize;
float accelRate;
int drawStats;
int XInputInited;
pfMPClipTexture *mpcliptex;
pfClipTexture *ct;
int ctWidth;
int ctHeight;
int ctDepth;
pfTexture *dummy; /* to disconnect cliptexture from global state */
int clearFinished;
int deleteFinished;
} SharedData;
static SharedData *Shared;
/*
* APP process variables
*/
/* for configuring multi-process */
static int ProcSplit = PFMP_APP_CULL_DRAW; /*PFMP_DEFAULT;*/
/* write out scene upon read-in - uses pfDebugPrint */
static int WriteScene = 0;
static int FullScreen = 0;
static int WinType = PFPWIN_TYPE_X;
static int numWin = 1; /* number of windows */
static int NoBorder = 0;
static int ForkedXInput = 0;
static char *ClipTexFileName;
char ProgName[PF_MAXSTRING];
/* light source created and updated in DRAW-process */
static pfLight *Sun;
static void CullChannel(pfChannel *chan, void *data);
static void DrawChannel(pfChannel *chan, void *data);
static void OpenPipeWin(pfPipeWindow *pw);
static void DeleteClipTexture(pfPipeWindow *pw);
static void ClearGlobalState(pfPipeWindow *pw);
static void UpdateView(void);
static void InitXInput(pfWSConnection dsp);
static void DoXInput(void);
static void GetXInput(Display *dsp);
static void Usage(void);
/*
* Usage() -- print usage advice and exit. This procedure
* is executed in the application process.
*/
static void
Usage (void)
{
pfNotify(PFNFY_FATAL, PFNFY_USAGE,
"Usage: %s [-m procSplit] [file.ext ...]\n", ProgName);
exit(1);
}
/*
* docmdline() -- use getopt to get command-line arguments,
* executed at the start of the application process.
*/
static int
docmdline(int argc, char *argv[])
{
int opt;
char *string;
struct stat statbuf;
strcpy(ProgName, argv[0]);
/* process command-line arguments */
while ((opt = getopt(argc, argv, "fFb23m:wxp:?")) != -1)
{
switch (opt)
{
case 'f':
FullScreen = 1;
break;
case 'F':
ForkedXInput = 1;
break;
case '2':
numWin = 2;
break;
case '3':
numWin = 3;
break;
case 'm':
case 'p':
ProcSplit = atoi(optarg);
break;
case 'w':
WriteScene = 1;
break;
case 'x':
WinType &= ~(PFPWIN_TYPE_X);
break;
case 'b':
NoBorder ^= 1;
break;
case '?':
Usage();
}
}
if(optind >= argc) {
pfNotify(PFNFY_FATAL, PFNFY_PRINT,
"%s: No clip texture configuration file argument\n",
ProgName);
exit(-1);
}
/* use argument as config file name */
ClipTexFileName = strdup(argv[optind]);
return(optind + 1); /* skip the cliptexture */
}
/*
* main() -- program entry point. this procedure
* is executed in the application process.
*/
char *winnames[] = { "Center View", "Left View", "Right View"};
int
main (int argc, char *argv[])
{
int arg;
int found;
int i;
pfGroup *root;
pfGeode *terrain;
pfPipe *p;
pfNode *obj;
pfChannel *chan[MAX_WINDOWS];
pfScene *scene;
pfEarthSky *eSky;
pfBox bbox;
float far = POLYSIZE * 10.f;
pfWSConnection dsp=NULL;
pfGeoSet *quad;
pfGeoState *gstate;
pfVec3 *corners;
pfVec2 *texvals;
pfTexEnv *tev;
void *arena;
pfVec3 *xyzoffset;
pfCoord offset;
int cliptex_supported;
pfTexture *deltex = 0;
uint image[4]; /* for dummy texture */
char namestring[128];
arg = docmdline(argc, argv);
pfInit();
/* configure multi-process selection */
pfMultiprocess(ProcSplit);
/* set number of pipes == number of pwins == number of channels */
pfMultipipe(numWin);
arena = pfGetSharedArena();
/* allocate shared before fork()'ing parallel processes */
Shared = (SharedData*)pfCalloc(1, sizeof(SharedData), arena);
Shared->ct = 0;
Shared->inWindow = 0;
Shared->reset = 0;
Shared->exitFlag = 0;
Shared->deleteClipTex = 0;
Shared->drawStats = 0;
Shared->XInputInited = 0;
Shared->deleteFinished = 0;
Shared->clearFinished = 0;
/* create dummy texture so cliptexture can be disconnected */
Shared->dummy = pfNewTex(arena);
pfTexFilter(Shared->dummy, PFTEX_MINFILTER, PFTEX_BILINEAR);
pfTexImage(Shared->dummy, image, 1, 1, 1, 1);
/* Load all loader DSO's before pfConfig() forks */
for (found = arg; found < argc; found++)
pfdInitConverter(argv[found]);
/* initiate multi-processing mode set in pfMultiprocess call
* FORKs for Performer processes, CULL and DRAW, etc. happen here.
*/
pfConfig();
/* look in reasonable places for clipmap data */
pfFilePath(".:/usr/share/Performer/data/clipdata/hunter:"
"/usr/share/Performer/data/clipdata/moffett");
/* create new mp clip texture */
Shared->ct = pfdLoadClipTexture(ClipTexFileName);
if(!Shared->ct)
pfNotify(PFNFY_FATAL, PFNFY_PRINT,
"%s: Invalid cliptexture configuration file: %s\n",
ProgName, ClipTexFileName);
pfGetClipTextureVirtualSize(Shared->ct,
&Shared->ctWidth,
&Shared->ctHeight,
&Shared->ctDepth);
Shared->mpcliptex = pfNewMPClipTexture();
pfMPClipTextureClipTexture(Shared->mpcliptex, Shared->ct);
(void)pfuAddMPClipTextureToPipes(Shared->mpcliptex, pfGetPipe(0), NULL);
for(i = 0; i < numWin;i++) {
p = pfGetPipe(i);
pfPipeScreen(p, 0); /* all pipes use 1 screen */
Shared->pw[i] = pfNewPWin(p);
(void)sprintf(namestring,
"Clip Texture Demo: %s%s",
winnames[i + 1 - (numWin & 0x1)],
i == 0 ? "(control)" : "");
pfPWinName(Shared->pw[i], namestring);
pfPWinType(Shared->pw[i], WinType);
if (NoBorder)
pfPWinMode(Shared->pw[i], PFWIN_NOBORDER, 1);
/* Open and configure the GL window. */
pfPWinConfigFunc(Shared->pw[i], OpenPipeWin);
pfConfigPWin(Shared->pw[i]);
if (FullScreen)
pfPWinFullScreen(Shared->pw[i]);
else
pfPWinOriginSize(Shared->pw[i], 0, 0, 512, 512);
pfPipeIncrementalStateChanNum(p, 0);
}
/* set off the draw process to open windows and call init callbacks */
pfFrame();
/* specify directories where geometry and textures exist */
if (!(getenv("PFPATH")))
pfFilePath(
"."
":./data"
":../data"
":../../data"
":../../../../data"
":/usr/share/Performer/data"
);
pfNotify(PFNFY_INFO, PFNFY_PRINT,"FilePath: %s\n", pfGetFilePath());
/* load files named by command line arguments */
scene = pfNewScene();
/* build a scene with a terrain node */
root = pfNewGroup();
pfAddChild(scene, root);
terrain = pfNewGeode();
pfAddChild(root, terrain);
quad = pfNewGSet(arena);
texvals = (pfVec2 *)pfMalloc(sizeof(pfVec2) * 4, arena);
pfSetVec2(texvals[0], 0., 0.);
pfSetVec2(texvals[1], 1., 0.);
pfSetVec2(texvals[2], 1., 1.);
pfSetVec2(texvals[3], 0., 1.);
corners = (pfVec3 *)pfMalloc(sizeof(pfVec3) * 4, arena);
pfSetVec3(corners[0], 0.f, 0.f, 0.f);
pfSetVec3(corners[1], POLYSIZE, 0.f, 0.f);
pfSetVec3(corners[2], POLYSIZE, POLYSIZE, 0.f);
pfSetVec3(corners[3], 0.f, POLYSIZE, 0.f);
pfGSetAttr(quad, PFGS_COORD3, PFGS_PER_VERTEX, corners, NULL);
pfGSetAttr(quad, PFGS_TEXCOORD2, PFGS_PER_VERTEX, texvals, NULL);
pfGSetPrimType(quad, PFGS_QUADS);
pfGSetNumPrims(quad, 1);
pfAddGSet(terrain, quad);
/* set up geo state */
gstate = pfNewGState(arena);
pfGStateMode(gstate, PFSTATE_ENTEXTURE, 1);
pfGStateAttr(gstate, PFSTATE_TEXTURE, Shared->ct);
pfGSetGState(quad, gstate);
for (found = 0; arg < argc; arg++)
{
if ((obj = pfdLoadFile(argv[arg])) != NULL)
{
pfAddChild(root,obj);
found++;
}
}
/* Write out nodes in scene (for debugging) */
if (WriteScene)
{
FILE *fp;
if (fp = fopen("scene.out", "w"))
{
pfPrint(scene, PFTRAV_SELF|PFTRAV_DESCEND, PFPRINT_VB_DEBUG, fp);
fclose(fp);
}
else
pfNotify(PFNFY_WARN, PFNFY_RESOURCE,
"Could not open scene.out for debug printing.");
}
/* determine extent of scene's geometry */
pfuTravCalcBBox(scene, &bbox);
pfFrameRate(30.0f);
pfPhase(PFPHASE_FREE_RUN);
eSky = pfNewESky();
pfESkyMode(eSky, PFES_BUFFER_CLEAR, PFES_SKY_GRND);
pfESkyAttr(eSky, PFES_GRND_HT, -POLYSIZE/500.f);
pfESkyColor(eSky, PFES_GRND_FAR, 0.1f, 0.1f, 0.1f, 1.0f);
pfESkyColor(eSky, PFES_GRND_NEAR, 0.2f, 0.4f, 0.2f, 1.0f);
pfSetVec3(offset.xyz, 0.f, 0.f, 0.f);
pfSetVec3(offset.hpr, 0.f, 0.f, 0.f);
for(i = 0; i < numWin; i++) {
chan[i] = pfNewChan(pfGetPipe(i));
pfAddChan(Shared->pw[i], chan[i]);
if(i > 0) {
pfAttachChan(chan[0], chan[i]);
offset.hpr[PF_H] = i * -90.f + (numWin - 1) * 90.f - 45.f;
pfChanViewOffsets(chan[i], offset.xyz, offset.hpr);
} else {
/* vertical FOV is matched to window aspect ratio */
pfChanFOV(chan[i], 45.0f, -1.0f);
pfSetVec3(Shared->view.xyz, POLYSIZE/2.f,
POLYSIZE/2.f,
POLYSIZE/50.f);
pfSetVec3(Shared->view.hpr, 0.f, 0.f, 0.f);
Shared->view.hpr[PF_H] = -(numWin -1) * 22.5;
PFSET_VEC3(bbox.min, 0.0, 0.0, 0.0);
PFSET_VEC3(bbox.max, POLYSIZE, POLYSIZE, POLYSIZE);
Shared->sceneSize = POLYSIZE;
pfChanView(chan[i], Shared->view.xyz, Shared->view.hpr);
PFCOPY_VEC3(Shared->viewOrig.xyz, Shared->view.xyz);
PFCOPY_VEC3(Shared->viewOrig.hpr, Shared->view.hpr);
pfChanScene(chan[i], scene);
pfChanNearFar(chan[i], 0.1f, far);
pfChanESky(chan[i], eSky);
pfChanTravFunc(chan[i], PFTRAV_CULL, CullChannel);
pfChanTravFunc(chan[i], PFTRAV_DRAW, DrawChannel);
}
pfChanTravMode(chan[i], PFTRAV_CULL, PFCULL_ALL);
}
/* create forked XInput handling process
* since the Shared pointer has already been initialized, that structure
* will be visible to the XInput process. Nothing else created in the
* application after this fork whose handles are not put in shared memory
* (such as the database and channels) will be visible to the
* XInput process.
*/
if (WinType & PFPWIN_TYPE_X)
{
pid_t fpid = 0;
if (ForkedXInput)
{
if ((fpid = fork()) < 0)
pfNotify(PFNFY_FATAL, PFNFY_SYSERR, "Fork of XInput process failed.");
else if (fpid)
pfNotify(PFNFY_NOTICE,PFNFY_PRINT,"XInput running in forked process %d",
fpid);
if (!fpid)
DoXInput();
}
else
{
dsp = pfGetCurWSConnection();
}
}
/* main simulation loop */
while (!Shared->exitFlag)
{
/* wait until next frame boundary */
pfSync();
/* delete the current cliptexture, if one exists */
if(Shared->deleteClipTex && Shared->mpcliptex)
{
int framecount;
int notclear = 1;
/* Only need to delete cliptex GLhandle 1x on multiple pipes (?) */
Shared->ct = pfGetMPClipTextureClipTexture(Shared->mpcliptex);
pfRef(Shared->ct);
pfDelete(Shared->mpcliptex);
framecount = pfGetFrameCount(); /* what frame am I deleting in? */
while(notclear)
{
/* wait until all pipes have drawn this frame */
pfFrame();
notclear = 0;
for(i = 0; i < numWin; i++)
if(framecount+4 > pfGetPipeDrawCount(i))
notclear = 1;
}
/* disconnect cliptexture from scenegraph */
pfGStateAttr(gstate, PFSTATE_TEXTURE, NULL);
Shared->deleteFinished = 0;
for(i = 0; i < numWin; i++)
{
pfUserData(Shared->pw[i], (void *)Shared->ct);
pfPWinConfigFunc(Shared->pw[i], DeleteClipTexture);
pfConfigPWin(Shared->pw[i]);
}
while(Shared->deleteFinished < numWin)
pfFrame();
/* wait for frame to go by if in lock mode. this ensures
that all downloads to texture memory and cliptexture are done */
for (i = 0; i < numWin; i++)
{
pfUserData(Shared->pw[i], NULL); /* stop referencing cliptexture */
}
framecount = pfGetFrameCount(); /* what frame am I deleting in? */
notclear = 1;
while(notclear)
{
/* wait until all pipes have drawn this frame */
pfFrame();
notclear = 0;
for(i = 0; i < numWin; i++)
if(framecount+4 > pfGetPipeDrawCount(i))
notclear = 1;
}
/* undo ref from attaching mpcliptex to cliptex and delete */
pfNotify(PFNFY_WARN,PFNFY_PRINT,"Starting Unref Delete (%d)",pfGetRef(Shared->ct));
pfUnrefDelete(Shared->ct);
pfNotify(PFNFY_WARN,PFNFY_PRINT,"Finished Unref Delete");
Shared->mpcliptex = NULL;
Shared->ct = NULL;
}
/* if there is no cliptexture, and it's no longer supposed to be
* deleted, create a new one
*/
if(!Shared->mpcliptex && !Shared->deleteClipTex)
{
int framecount;
int notclear = 1;
/* create new mp clip texture */
Shared->ct = pfdLoadClipTexture(ClipTexFileName);
if(!Shared->ct)
pfNotify(PFNFY_FATAL, PFNFY_PRINT,
"%s: Invalid cliptexture configuration file: %s\n",
ProgName, ClipTexFileName);
pfGetClipTextureVirtualSize(Shared->ct,
&Shared->ctWidth,
&Shared->ctHeight,
&Shared->ctDepth);
Shared->mpcliptex = pfNewMPClipTexture();
pfMPClipTextureClipTexture(Shared->mpcliptex, Shared->ct);
(void)pfuAddMPClipTextureToPipes(Shared->mpcliptex, pfGetPipe(0),
NULL);
framecount = pfGetFrameCount(); /* what frame am I deleting in? */
pfNotify(PFNFY_WARN,PFNFY_PRINT,"Created New Ct 0x%x in frame %d",
Shared->ct, framecount);
while(notclear)
{
/* wait until all pipes have drawn this frame */
pfFrame();
notclear = 0;
for(i = 0; i < numWin; i++)
if(framecount+4 > pfGetPipeDrawCount(i))
notclear = 1;
}
pfNotify(PFNFY_WARN,PFNFY_PRINT,"Attaching Ct 0x%x to gstate in frame %d",
Shared->ct, pfGetFrameCount());
pfGStateAttr(gstate, PFSTATE_TEXTURE, Shared->ct);
}
/* initiate traversal using current state */
pfFrame();
/* Set view parameters for next frame */
UpdateView();
/* update center based on (x, y) position */
if(Shared->mpcliptex)
pfMPClipTextureCenter(Shared->mpcliptex,
Shared->view.xyz[PF_X] *
Shared->ctWidth/POLYSIZE,
Shared->view.xyz[PF_Y] *
Shared->ctHeight/POLYSIZE,
0);
pfChanView(chan[0], Shared->view.xyz, Shared->view.hpr);
if (!ForkedXInput)
{
if (!Shared->XInputInited)
InitXInput(dsp);
if (Shared->XInputInited)
GetXInput(dsp);
}
}
/* terminate cull and draw processes (if they exist) */
pfExit();
/* exit to operating system */
exit(0);
}
static void
InitXInput(pfWSConnection dsp)
{
Window w;
/* wait for X Window to exist in Performer shared memory */
/* only take x events from window 0 */
if (w = pfGetPWinWSWindow(Shared->pw[0]))
{
XSelectInput(dsp, w, PointerMotionMask |
ButtonPressMask | ButtonReleaseMask | KeyPressMask);
XMapWindow(dsp, w);
XFlush(dsp);
Shared->XInputInited = 1;
}
}
/*
* DoXInput() runs an asychronous forked even handling process.
* Shared memory structures can be read from this process
* but NO performer calls that set any structures should be
* issues by routines in this process.
*/
static void
DoXInput(void)
{
/* windows from draw should now exist so can attach X input handling
* to the X window
*/
pfWSConnection dsp = pfGetCurWSConnection();
#ifndef __linux__
prctl(PR_TERMCHILD); /* Exit when parent does */
sigset(SIGHUP, SIG_DFL); /* Exit when sent SIGHUP by TERMCHILD */
#endif
while (1)
{
XEvent event;
if (!Shared->XInputInited)
InitXInput(dsp);
if (Shared->XInputInited)
{
XPeekEvent(dsp, &event);
GetXInput(dsp);
}
}
}
/*
* UpdateView() updates the eyepoint based on the information
* placed in shared memory by GetInput().
*/
static void
UpdateView(void)
{
static float speed = 0.0f;
pfCoord *view = &Shared->view;
float cp;
float mx, my;
static double thisTime = -1.0f;
double prevTime;
float deltaTime;
prevTime = thisTime;
thisTime = pfGetTime();
if (prevTime < 0.0f)
return;
if (!Shared->inWindow || Shared->reset)
{
speed = 0;
Shared->reset = 0;
Shared->accelRate = 0.05f * Shared->sceneSize;
return;
}
deltaTime = thisTime - prevTime;
switch (Shared->mouseButtons)
{
case Button1Mask: /* LEFTMOUSE: faster forward or slower backward*/
case Button1Mask|Button2Mask:
speed += Shared->accelRate * deltaTime;
if (speed > Shared->sceneSize * .5f)
speed = Shared->sceneSize * .5f;
break;
case Button3Mask: /* RIGHTMOUSE: faster backward or slower foreward*/
case Button3Mask|Button2Mask:
speed -= Shared->accelRate * deltaTime;
if (speed < -Shared->sceneSize * .5f)
speed = -Shared->sceneSize * .5f;
break;
}
if (Shared->mouseButtons)
{
mx = 2.0f * (Shared->mouseX / (float)Shared->winSizeX) - 1.0f;
my = 2.0f * (Shared->mouseY / (float)Shared->winSizeY) - 1.0f;
/* update view direction */
view->hpr[PF_H] -= mx * PF_ABS(mx) * 30.0f * deltaTime;
view->hpr[PF_P] += my * PF_ABS(my) * 30.0f * deltaTime;
view->hpr[PF_R] = 0.0f;
/* update view position */
cp = cosf(PF_DEG2RAD(view->hpr[PF_P]));
view->xyz[PF_X] += speed*sinf(-PF_DEG2RAD(view->hpr[PF_H]))*cp;
view->xyz[PF_Y] += speed*cosf(-PF_DEG2RAD(view->hpr[PF_H]))*cp;
view->xyz[PF_Z] += speed*sinf( PF_DEG2RAD(view->hpr[PF_P]));
/* clamp (x, y, z) range */
if(view->xyz[PF_X] < 0.f)
view->xyz[PF_X] = 0.f;
if(view->xyz[PF_X] > POLYSIZE)
view->xyz[PF_X] = POLYSIZE;
if(view->xyz[PF_Y] < 0.f)
view->xyz[PF_Y] = 0.f;
if(view->xyz[PF_Y] > POLYSIZE)
view->xyz[PF_Y] = POLYSIZE;
if(view->xyz[PF_Z] < POLYSIZE / 200.f)
view->xyz[PF_Z] = POLYSIZE / 200.f;
if(view->xyz[PF_Z] > POLYSIZE / 2.f)
view->xyz[PF_Z] = POLYSIZE / 2.f;
}
else
{
speed = 0.0f;
Shared->accelRate = 0.001f * Shared->sceneSize;
}
}
/*
* CullChannel() -- traverse the scene graph and generate a
* display list for the draw process. This procedure is
* executed in the CULL process.
*/
static void
CullChannel(pfChannel *channel, void *data)
{
/*
* pfDrawGeoSet or other display listable Performer routines
* could be invoked before or after pfCull()
*/
(channel, data);
pfCull();
}
/*
* OpenPipeWin() -- create a win: setup the GL and OpenGL Performer.
* This procedure is executed in the DRAW process
* (when there is a separate draw process).
*/
static void
OpenPipeWin(pfPipeWindow *pw)
{
pfPipe *p;
Window w;
Display *dsp;
pfOpenPWin(pw);
/* create a light source in the "south-west" (QIII) */
Sun = pfNewLight(NULL);
pfLightPos(Sun, -0.3f, -0.3f, 1.0f, 0.0f);
pfApplyTEnv(pfNewTEnv(pfGetSharedArena()));
pfOverride(PFSTATE_TEXENV, PF_ON);
}
static void
DeleteClipTexture(pfPipeWindow *pw)
{
pfClipTexture *clip;
pfNotify(PFNFY_WARN, PFNFY_PRINT,"Start DeleteClipTex");
pfApplyTex(Shared->dummy); /* stop global state from using ct */
/* get libpr cliptexture ptr */
clip = (pfClipTexture*)pfGetUserData(pw); /* ptr can be passed other ways */
PFASSERTALWAYS(pfIsOfType(clip, pfGetClipTextureClassType()));
pfDeleteGLHandle((pfTexture *)clip);
pfNotify(PFNFY_WARN, PFNFY_PRINT,"Finish DeleteClipTex");
Shared->deleteFinished++;
}
static void
ClearGlobalState(pfPipeWindow *pw)
{
pfNotify(PFNFY_WARN, PFNFY_PRINT,"Start Clear Global");
pfApplyTex(Shared->dummy); /* stop global state from using ct */
pfNotify(PFNFY_WARN, PFNFY_PRINT,"Finish Clear Global");
}
/*
* DrawChannel() -- draw a channel and read input queue. this
* procedure is executed in the draw process (when there is a
* separate draw process).
*/
static void
DrawChannel (pfChannel *channel, void *data)
{
(channel, data);
/* rebind light so it stays fixed in position */
pfLightOn(Sun);
/* erase framebuffer and draw Earth-Sky model */
pfClearChan(channel);
/* invoke Performer draw-processing for this frame */
pfDraw();
/* draw Performer throughput statistics */
if (Shared->drawStats)
pfDrawChanStats(channel);
/* read window origin and size (it may have changed) */
pfGetPWinSize(pfGetChanPWin(channel), &Shared->winSizeX, &Shared->winSizeY);
}
static void
GetXInput(pfWSConnection dsp)
{
static int x=0, y=0;
if (XEventsQueued(dsp, QueuedAfterFlush))
while (XEventsQueued(dsp, QueuedAlready))
{
XEvent event;
XNextEvent(dsp, &event);
switch (event.type)
{
case ConfigureNotify:
break;
case FocusIn:
Shared->inWindow = 1;
break;
case FocusOut:
Shared->inWindow = 0;
break;
case MotionNotify:
{
XMotionEvent *motion_event = (XMotionEvent *) &event;
x = motion_event->x;
y = Shared->winSizeY - motion_event->y;
}
break;
case ButtonPress:
{
XButtonEvent *button_event = (XButtonEvent *) &event;
x = event.xbutton.x;
y = Shared->winSizeY - event.xbutton.y;
Shared->inWindow = 1;
switch (button_event->button) {
case Button1:
Shared->mouseButtons |= Button1Mask;
break;
case Button2:
Shared->mouseButtons |= Button2Mask;
break;
case Button3:
Shared->mouseButtons |= Button3Mask;
break;
}
}
break;
case ButtonRelease:
{
XButtonEvent *button_event = (XButtonEvent *) &event;
switch (button_event->button) {
case Button1:
Shared->mouseButtons &= ~Button1Mask;
break;
case Button2:
Shared->mouseButtons &= ~Button2Mask;
break;
case Button3:
Shared->mouseButtons &= ~Button3Mask;
break;
}
}
break;
case KeyPress:
{
char buf[100];
int rv;
KeySym ks;
rv = XLookupString(&event.xkey, buf, sizeof(buf), &ks, 0);
switch(ks) {
case XK_Escape:
Shared->exitFlag = 1;
exit(0);
break;
case XK_space:
Shared->reset = 1;
PFCOPY_VEC3(Shared->view.xyz, Shared->viewOrig.xyz);
PFCOPY_VEC3(Shared->view.hpr, Shared->viewOrig.hpr);
pfNotify(PFNFY_NOTICE, PFNFY_PRINT, "Reset");
break;
case XK_g:
Shared->drawStats = !Shared->drawStats;
break;
case XK_D: /* MP deletion of cliptextures */
case XK_d:
if(!Shared->deleteClipTex)
pfNotify(PFNFY_NOTICE, PFNFY_PRINT, "deleting cliptexture");
Shared->deleteClipTex = 1;
break;
case XK_L: /* MP load of cliptextures */
case XK_l:
if(Shared->deleteClipTex)
pfNotify(PFNFY_NOTICE, PFNFY_PRINT, "creating cliptexture");
Shared->deleteClipTex = 0;
break;
default:
break;
}
}
break;
default:
break;
}/* switch */
}
Shared->mouseX = x;
Shared->mouseY = y;
}
![[BACK]](/icons/back.gif){kind=icon}
Return to cliptex.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [Development] / performer / src / pguide / libpf / C