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-rw-r--r--progs/xdemos/Makefile30
-rw-r--r--progs/xdemos/descrip.mms83
-rw-r--r--progs/xdemos/glthreads.c281
3 files changed, 235 insertions, 159 deletions
diff --git a/progs/xdemos/Makefile b/progs/xdemos/Makefile
index f8f2f15380..8d248fb0a9 100644
--- a/progs/xdemos/Makefile
+++ b/progs/xdemos/Makefile
@@ -50,7 +50,7 @@ EXTRA_PROGS = \
.SUFFIXES: .c
.c: $(LIB_DEP)
- $(CC) -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) $(LDFLAGS) $< $(LIBS) -o $@
+ $(APP_CC) -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) $(LDFLAGS) $< $(LIBS) -o $@
##### TARGETS #####
@@ -68,44 +68,44 @@ clean:
# special cases
pbinfo: pbinfo.o pbutil.o
- $(CC) $(CFLAGS) $(LDFLAGS) pbinfo.o pbutil.o $(LIBS) -o $@
+ $(APP_CC) $(CFLAGS) $(LDFLAGS) pbinfo.o pbutil.o $(LIBS) -o $@
pbdemo: pbdemo.o pbutil.o
- $(CC) $(CFLAGS) $(LDFLAGS) pbdemo.o pbutil.o $(LIBS) -o $@
+ $(APP_CC) $(CFLAGS) $(LDFLAGS) pbdemo.o pbutil.o $(LIBS) -o $@
pbinfo.o: pbinfo.c pbutil.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) pbinfo.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) pbinfo.c
pbdemo.o: pbdemo.c pbutil.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) pbdemo.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) pbdemo.c
pbutil.o: pbutil.c pbutil.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) pbutil.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) pbutil.c
glxgears_fbconfig: glxgears_fbconfig.o pbutil.o
- $(CC) $(CFLAGS) $(LDFLAGS) glxgears_fbconfig.o pbutil.o $(LIBS) -o $@
+ $(APP_CC) $(CFLAGS) $(LDFLAGS) glxgears_fbconfig.o pbutil.o $(LIBS) -o $@
glxgears_fbconfig.o: glxgears_fbconfig.c pbutil.h
- $(CC) -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) -c -I. $(CFLAGS) glxgears_fbconfig.c
+ $(APP_CC) -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) -c -I. $(CFLAGS) glxgears_fbconfig.c
xrotfontdemo: xrotfontdemo.o xuserotfont.o
- $(CC) $(CFLAGS) $(LDFLAGS) xrotfontdemo.o xuserotfont.o $(LIBS) -o $@
+ $(APP_CC) $(CFLAGS) $(LDFLAGS) xrotfontdemo.o xuserotfont.o $(LIBS) -o $@
xuserotfont.o: xuserotfont.c xuserotfont.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) xuserotfont.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) xuserotfont.c
xrotfontdemo.o: xrotfontdemo.c xuserotfont.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) xrotfontdemo.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) xrotfontdemo.c
corender: corender.o ipc.o
- $(CC) $(CFLAGS) corender.o ipc.o $(LIBS) -o $@
+ $(APP_CC) $(CFLAGS) corender.o ipc.o $(LIBS) -o $@
corender.o: corender.c ipc.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) corender.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) corender.c
ipc.o: ipc.c ipc.h
- $(CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) ipc.c
+ $(APP_CC) -c -I. -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) ipc.c
yuvrect_client: yuvrect_client.c
- $(CC) -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) $< $(LDFLAGS) $(LIBS) -l$(GLU_LIB) -o $@
+ $(APP_CC) -I$(INCDIR) $(X11_INCLUDES) $(CFLAGS) $< $(LDFLAGS) $(LIBS) -l$(GLU_LIB) -o $@
diff --git a/progs/xdemos/descrip.mms b/progs/xdemos/descrip.mms
deleted file mode 100644
index aa74daff59..0000000000
--- a/progs/xdemos/descrip.mms
+++ /dev/null
@@ -1,83 +0,0 @@
-# Makefile for GLUT-based demo programs for VMS
-# contributed by Jouk Jansen joukj@hrem.stm.tudelft.nl
-
-
-.first
- define gl [--.include.gl]
-
-.include [--]mms-config.
-
-##### MACROS #####
-
-INCDIR = ([--.include],[-.util])
-CFLAGS = /include=$(INCDIR)/prefix=all/name=(as_is,short)/nowarn/float=ieee/ieee=denorm
-
-.ifdef SHARE
-GL_LIBS = $(XLIBS)
-.else
-GL_LIBS = [--.lib]libGLUT/l,libMesaGLU/l,libMesaGL/l,$(XLIBS)
-.endif
-
-LIB_DEP = [--.lib]$(GL_LIB) [--.lib]$(GLU_LIB) [--.lib]$(GLUT_LIB)
-
-PROGS =glthreads.exe,\
- glxdemo.exe,\
- glxgears.exe,\
- glxheads.exe,\
- glxinfo.exe,\
- glxpixmap.exe,\
- manywin.exe,\
- offset.exe,\
- pbinfo.exe,\
- pbdemo.exe,\
- wincopy.exe,\
- xdemo.exe,\
- xfont.exe
-
-##### RULES #####
-.obj.exe :
- cxxlink $(MMS$TARGET_NAME),$(GL_LIBS)
-
-##### TARGETS #####
-default :
- $(MMS)$(MMSQUALIFIERS) $(PROGS)
-
-clean :
- delete *.obj;*
-
-realclean :
- delete $(PROGS)
- delete *.obj;*
-
-
-glthreads.exe : glthreads.obj $(LIB_DEP)
-glxdemo.exe : glxdemo.obj $(LIB_DEP)
-glxgears.exe : glxgears.obj $(LIB_DEP)
-glxheads.exe : glxheads.obj $(LIB_DEP)
-glxinfo.exe : glxinfo.obj $(LIB_DEP)
-glxpixmap.exe : glxpixmap.obj $(LIB_DEP)
-manywin.exe : manywin.obj $(LIB_DEP)
-offset.exe : offset.obj $(LIB_DEP)
-pbinfo.exe : pbinfo.obj pbutil.obj $(LIB_DEP)
- cxxlink pbinfo.obj,pbutil.obj,$(GL_LIBS)
-pbdemo.exe : pbdemo.obj pbutil.obj $(LIB_DEP)
- cxxlink pbdemo.obj,pbutil.obj,$(GL_LIBS)
-wincopy.exe : wincopy.obj $(LIB_DEP)
-xdemo.exe : xdemo.obj $(LIB_DEP)
-xfont.exe :xfont.obj $(LIB_DEP)
-
-
-glthreads.obj : glthreads.c
-glxdemo.obj : glxdemo.c
-glxgears.obj : glxgears.c
-glxheads.obj : glxheads.c
-glxinfo.obj : glxinfo.c
-glxpixmap.obj : glxpixmap.c
-manywin.obj : manywin.c
-offset.obj : offset.c
-pbinfo.obj : pbinfo.c
-pbutil.obj : pbutil.c
-pbdemo.obj : pbdemo.c
-wincopy.obj : wincopy.c
-xdemo.obj : xdemo.c
-xfont.obj :xfont.c
diff --git a/progs/xdemos/glthreads.c b/progs/xdemos/glthreads.c
index 4f87ee75d4..b90e6b4f31 100644
--- a/progs/xdemos/glthreads.c
+++ b/progs/xdemos/glthreads.c
@@ -27,16 +27,30 @@
* -l Enable application-side locking
* -n <num threads> Number of threads to create (default is 2)
* -display <display name> Specify X display (default is :0.0)
+ * -t Use texture mapping
*
* Brian Paul 20 July 2000
*/
+/*
+ * Notes:
+ * - Each thread gets its own GLX context.
+ *
+ * - The GLX contexts share texture objects.
+ *
+ * - When 't' is pressed to update the texture image, the window/thread which
+ * has input focus is signalled to change the texture. The other threads
+ * should see the updated texture the next time they call glBindTexture.
+ */
+
+
#if defined(PTHREADS) /* defined by Mesa on Linux and other platforms */
#include <assert.h>
#include <GL/gl.h>
#include <GL/glx.h>
+#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -56,6 +70,8 @@ struct winthread {
float Angle;
int WinWidth, WinHeight;
GLboolean NewSize;
+ GLboolean Initialized;
+ GLboolean MakeNewTexture;
};
@@ -66,8 +82,13 @@ static volatile GLboolean ExitFlag = GL_FALSE;
static GLboolean MultiDisplays = 0;
static GLboolean Locking = 0;
+static GLboolean Texture = GL_FALSE;
+static GLuint TexObj = 12;
+static GLboolean Animate = GL_TRUE;
static pthread_mutex_t Mutex;
+static pthread_cond_t CondVar;
+static pthread_mutex_t CondMutex;
static void
@@ -78,6 +99,59 @@ Error(const char *msg)
}
+static void
+signal_redraw(void)
+{
+ pthread_mutex_lock(&CondMutex);
+ pthread_cond_broadcast(&CondVar);
+ pthread_mutex_unlock(&CondMutex);
+}
+
+
+static void
+MakeNewTexture(struct winthread *wt)
+{
+#define TEX_SIZE 128
+ static float step = 0.0;
+ GLfloat image[TEX_SIZE][TEX_SIZE][4];
+ GLint width;
+ int i, j;
+
+ for (j = 0; j < TEX_SIZE; j++) {
+ for (i = 0; i < TEX_SIZE; i++) {
+ float dt = 5.0 * (j - 0.5 * TEX_SIZE) / TEX_SIZE;
+ float ds = 5.0 * (i - 0.5 * TEX_SIZE) / TEX_SIZE;
+ float r = dt * dt + ds * ds + step;
+ image[j][i][0] =
+ image[j][i][1] =
+ image[j][i][2] = 0.75 + 0.25 * cos(r);
+ image[j][i][3] = 1.0;
+ }
+ }
+
+ step += 0.5;
+
+ glBindTexture(GL_TEXTURE_2D, TexObj);
+
+ glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width);
+ if (width) {
+ assert(width == TEX_SIZE);
+ /* sub-tex replace */
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, TEX_SIZE, TEX_SIZE,
+ GL_RGBA, GL_FLOAT, image);
+ }
+ else {
+ /* create new */
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, TEX_SIZE, TEX_SIZE, 0,
+ GL_RGBA, GL_FLOAT, image);
+ }
+}
+
+
+
/* draw a colored cube */
static void
draw_object(void)
@@ -86,52 +160,61 @@ draw_object(void)
glScalef(0.75, 0.75, 0.75);
glColor3f(1, 0, 0);
- glBegin(GL_POLYGON);
- glVertex3f(1, -1, -1);
- glVertex3f(1, 1, -1);
- glVertex3f(1, 1, 1);
- glVertex3f(1, -1, 1);
- glEnd();
+ if (Texture) {
+ glBindTexture(GL_TEXTURE_2D, TexObj);
+ glEnable(GL_TEXTURE_2D);
+ }
+ else {
+ glDisable(GL_TEXTURE_2D);
+ }
+
+ glBegin(GL_QUADS);
+
+ /* -X */
glColor3f(0, 1, 1);
- glBegin(GL_POLYGON);
- glVertex3f(-1, -1, -1);
- glVertex3f(-1, 1, -1);
- glVertex3f(-1, 1, 1);
- glVertex3f(-1, -1, 1);
- glEnd();
+ glTexCoord2f(0, 0); glVertex3f(-1, -1, -1);
+ glTexCoord2f(1, 0); glVertex3f(-1, 1, -1);
+ glTexCoord2f(1, 1); glVertex3f(-1, 1, 1);
+ glTexCoord2f(0, 1); glVertex3f(-1, -1, 1);
- glColor3f(0, 1, 0);
- glBegin(GL_POLYGON);
- glVertex3f(-1, 1, -1);
- glVertex3f( 1, 1, -1);
- glVertex3f( 1, 1, 1);
- glVertex3f(-1, 1, 1);
- glEnd();
+ /* +X */
+ glColor3f(1, 0, 0);
+ glTexCoord2f(0, 0); glVertex3f(1, -1, -1);
+ glTexCoord2f(1, 0); glVertex3f(1, 1, -1);
+ glTexCoord2f(1, 1); glVertex3f(1, 1, 1);
+ glTexCoord2f(0, 1); glVertex3f(1, -1, 1);
+ /* -Y */
glColor3f(1, 0, 1);
- glBegin(GL_POLYGON);
- glVertex3f(-1, -1, -1);
- glVertex3f( 1, -1, -1);
- glVertex3f( 1, -1, 1);
- glVertex3f(-1, -1, 1);
- glEnd();
+ glTexCoord2f(0, 0); glVertex3f(-1, -1, -1);
+ glTexCoord2f(1, 0); glVertex3f( 1, -1, -1);
+ glTexCoord2f(1, 1); glVertex3f( 1, -1, 1);
+ glTexCoord2f(0, 1); glVertex3f(-1, -1, 1);
- glColor3f(0, 0, 1);
- glBegin(GL_POLYGON);
- glVertex3f(-1, -1, 1);
- glVertex3f( 1, -1, 1);
- glVertex3f( 1, 1, 1);
- glVertex3f(-1, 1, 1);
- glEnd();
+ /* +Y */
+ glColor3f(0, 1, 0);
+ glTexCoord2f(0, 0); glVertex3f(-1, 1, -1);
+ glTexCoord2f(1, 0); glVertex3f( 1, 1, -1);
+ glTexCoord2f(1, 1); glVertex3f( 1, 1, 1);
+ glTexCoord2f(0, 1); glVertex3f(-1, 1, 1);
+ /* -Z */
glColor3f(1, 1, 0);
- glBegin(GL_POLYGON);
- glVertex3f(-1, -1, -1);
- glVertex3f( 1, -1, -1);
- glVertex3f( 1, 1, -1);
- glVertex3f(-1, 1, -1);
+ glTexCoord2f(0, 0); glVertex3f(-1, -1, -1);
+ glTexCoord2f(1, 0); glVertex3f( 1, -1, -1);
+ glTexCoord2f(1, 1); glVertex3f( 1, 1, -1);
+ glTexCoord2f(0, 1); glVertex3f(-1, 1, -1);
+
+ /* +Y */
+ glColor3f(0, 0, 1);
+ glTexCoord2f(0, 0); glVertex3f(-1, -1, 1);
+ glTexCoord2f(1, 0); glVertex3f( 1, -1, 1);
+ glTexCoord2f(1, 1); glVertex3f( 1, 1, 1);
+ glTexCoord2f(0, 1); glVertex3f(-1, 1, 1);
+
glEnd();
+
glPopMatrix();
}
@@ -143,6 +226,8 @@ resize(struct winthread *wt, int w, int h)
wt->NewSize = GL_TRUE;
wt->WinWidth = w;
wt->WinHeight = h;
+ if (!Animate)
+ signal_redraw();
}
@@ -152,18 +237,19 @@ resize(struct winthread *wt, int w, int h)
static void
draw_loop(struct winthread *wt)
{
- GLboolean firstIter = GL_TRUE;
-
while (!ExitFlag) {
if (Locking)
pthread_mutex_lock(&Mutex);
glXMakeCurrent(wt->Dpy, wt->Win, wt->Context);
- if (firstIter) {
+ if (!wt->Initialized) {
printf("glthreads: %d: GL_RENDERER = %s\n", wt->Index,
(char *) glGetString(GL_RENDERER));
- firstIter = GL_FALSE;
+ if (Texture /*&& wt->Index == 0*/) {
+ MakeNewTexture(wt);
+ }
+ wt->Initialized = GL_TRUE;
}
if (Locking)
@@ -183,10 +269,15 @@ draw_loop(struct winthread *wt)
wt->NewSize = GL_FALSE;
}
+ if (wt->MakeNewTexture) {
+ MakeNewTexture(wt);
+ wt->MakeNewTexture = GL_FALSE;
+ }
+
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
- glRotatef(wt->Angle, 0, 0, 1);
+ glRotatef(wt->Angle, 0, 1, 0);
glRotatef(wt->Angle, 1, 0, 0);
glScalef(0.7, 0.7, 0.7);
draw_object();
@@ -200,12 +291,63 @@ draw_loop(struct winthread *wt)
if (Locking)
pthread_mutex_unlock(&Mutex);
- usleep(5000);
+ if (Animate) {
+ usleep(5000);
+ }
+ else {
+ /* wait for signal to draw */
+ pthread_mutex_lock(&CondMutex);
+ pthread_cond_wait(&CondVar, &CondMutex);
+ pthread_mutex_unlock(&CondMutex);
+ }
wt->Angle += 1.0;
}
}
+static void
+keypress(XEvent *event, struct winthread *wt)
+{
+ char buf[100];
+ KeySym keySym;
+ XComposeStatus stat;
+
+ XLookupString(&event->xkey, buf, sizeof(buf), &keySym, &stat);
+
+ switch (keySym) {
+ case XK_Escape:
+ /* tell all threads to exit */
+ if (!Animate) {
+ signal_redraw();
+ }
+ ExitFlag = GL_TRUE;
+ /*printf("exit draw_loop %d\n", wt->Index);*/
+ return;
+ case XK_t:
+ case XK_T:
+ if (Texture) {
+ wt->MakeNewTexture = GL_TRUE;
+ if (!Animate)
+ signal_redraw();
+ }
+ break;
+ case XK_a:
+ case XK_A:
+ Animate = !Animate;
+ if (Animate) /* yes, prev Animate state! */
+ signal_redraw();
+ break;
+ case XK_s:
+ case XK_S:
+ if (!Animate)
+ signal_redraw();
+ break;
+ default:
+ ; /* nop */
+ }
+}
+
+
/*
* The main process thread runs this loop.
* Single display connection for all threads.
@@ -251,10 +393,14 @@ event_loop(Display *dpy)
}
break;
case KeyPress:
- /* tell all threads to exit */
- ExitFlag = GL_TRUE;
- /*printf("exit draw_loop %d\n", wt->Index);*/
- return;
+ for (i = 0; i < NumWinThreads; i++) {
+ struct winthread *wt = &WinThreads[i];
+ if (event.xkey.window == wt->Win) {
+ keypress(&event, wt);
+ break;
+ }
+ }
+ break;
default:
/*no-op*/ ;
}
@@ -282,12 +428,10 @@ event_loop_multi(void)
resize(wt, event.xconfigure.width, event.xconfigure.height);
break;
case KeyPress:
- /* tell all threads to exit */
- ExitFlag = GL_TRUE;
- /*printf("exit draw_loop %d\n", wt->Index);*/
- return;
+ keypress(&event, wt);
+ break;
default:
- /*no-op*/ ;
+ ; /* nop */
}
}
w = (w + 1) % NumWinThreads;
@@ -301,7 +445,7 @@ event_loop_multi(void)
* we'll call this once for each thread, before the threads are created.
*/
static void
-create_window(struct winthread *wt)
+create_window(struct winthread *wt, GLXContext shareCtx)
{
Window win;
GLXContext ctx;
@@ -317,9 +461,9 @@ create_window(struct winthread *wt)
unsigned long mask;
Window root;
XVisualInfo *visinfo;
- int width = 80, height = 80;
- int xpos = (wt->Index % 10) * 90;
- int ypos = (wt->Index / 10) * 100;
+ int width = 160, height = 160;
+ int xpos = (wt->Index % 8) * (width + 10);
+ int ypos = (wt->Index / 8) * (width + 20);
scrnum = DefaultScreen(wt->Dpy);
root = RootWindow(wt->Dpy, scrnum);
@@ -356,7 +500,7 @@ create_window(struct winthread *wt)
}
- ctx = glXCreateContext(wt->Dpy, visinfo, NULL, True);
+ ctx = glXCreateContext(wt->Dpy, visinfo, shareCtx, True);
if (!ctx) {
Error("Couldn't create GLX context");
}
@@ -417,6 +561,12 @@ usage(void)
printf(" -n NUMTHREADS Number of threads to create\n");
printf(" -p Use a separate display connection for each thread\n");
printf(" -l Use application-side locking\n");
+ printf(" -t Enable texturing\n");
+ printf("Keyboard:\n");
+ printf(" Esc Exit\n");
+ printf(" t Change texture image (requires -t option)\n");
+ printf(" a Toggle animation\n");
+ printf(" s Step rotation (when not animating)\n");
}
@@ -445,6 +595,9 @@ main(int argc, char *argv[])
else if (strcmp(argv[i], "-l") == 0) {
Locking = 1;
}
+ else if (strcmp(argv[i], "-t") == 0) {
+ Texture = 1;
+ }
else if (strcmp(argv[i], "-n") == 0 && i + 1 < argc) {
numThreads = atoi(argv[i + 1]);
if (numThreads < 1)
@@ -491,9 +644,9 @@ main(int argc, char *argv[])
}
}
- if (Locking) {
- pthread_mutex_init(&Mutex, NULL);
- }
+ pthread_mutex_init(&Mutex, NULL);
+ pthread_mutex_init(&CondMutex, NULL);
+ pthread_cond_init(&CondVar, NULL);
printf("glthreads: creating windows\n");
@@ -501,6 +654,8 @@ main(int argc, char *argv[])
/* Create the GLX windows and contexts */
for (i = 0; i < numThreads; i++) {
+ GLXContext share;
+
if (MultiDisplays) {
WinThreads[i].Dpy = XOpenDisplay(displayName);
assert(WinThreads[i].Dpy);
@@ -509,7 +664,11 @@ main(int argc, char *argv[])
WinThreads[i].Dpy = dpy;
}
WinThreads[i].Index = i;
- create_window(&WinThreads[i]);
+ WinThreads[i].Initialized = GL_FALSE;
+
+ share = (Texture && i > 0) ? WinThreads[0].Context : 0;
+
+ create_window(&WinThreads[i], share);
}
printf("glthreads: creating threads\n");
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