Acme-MITHALDU-BleedingOpenGL
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pogl_gl_top.xs  view on Meta::CPAN 


    glBindTexture(target,oga->tex_handle[1]);
    glTexParameteri(target,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
    glTexParameteri(target,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
    glTexParameteri(target,GL_TEXTURE_WRAP_S,GL_CLAMP);
    glTexParameteri(target,GL_TEXTURE_WRAP_T,GL_CLAMP);

    glTexImage2D(target,0,pixel_type,w,h,0,
      pixel_format,element_size,0);

    glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
      GL_COLOR_ATTACHMENT0_EXT,target,oga->tex_handle[1],0);

    status = glCheckFramebufferStatusEXT(GL_RENDERBUFFER_EXT);
    if (status) croak("enable_fbo status: %04X\n",status);
  }
  else
  {
    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,oga->fbo_handle);
  }

  /* Load data */
  glBindTexture(target,oga->tex_handle[0]);
  glTexImage2D(target,0,pixel_type,w,h,0,
    pixel_format,element_size,oga->data);

  glEnable(target);
  //glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
  glBindTexture(target,oga->tex_handle[0]);
  glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL);
}

/* Disable an FBO bound to an OGA */
void disable_fbo(oga_struct * oga)
{
  if (!oga) return;
  if (oga->fbo_handle)
  {
    glDisable(oga->target);
    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,0);
  }
}
#endif




MODULE = Acme::MITHALDU::BleedingOpenGL::GL::Top		PACKAGE = Acme::MITHALDU::BleedingOpenGL



#// Test for GL
int
_have_gl()
	CODE:
#ifdef HAVE_GL
	RETVAL = 1;
#else
	RETVAL = 0;
#endif /* defined HAVE_GL */
	OUTPUT:
	RETVAL

#// Test for GLU
int
_have_glu()
	CODE:
#ifdef HAVE_GLU
	RETVAL = 1;
#else
	RETVAL = 0;
#endif /* defined HAVE_GLU */
	OUTPUT:
	RETVAL

#// Test for GLUT
int
_have_glut()
	CODE:
#if defined(HAVE_GLUT) || defined(HAVE_FREEGLUT)
	RETVAL = 1;
#else
	RETVAL = 0;
#endif /* defined HAVE_GLUT or HAVE_FREEGLUT */
	OUTPUT:
	RETVAL

#// Test for FreeGLUT
int
_have_freeglut()
	CODE:
#if defined(HAVE_FREEGLUT)
	RETVAL = 1;
#else
	RETVAL = 0;
#endif /* defined HAVE_FREEGLUT */
	OUTPUT:
	RETVAL

#// Test for GLX
int
_have_glx()
	CODE:
#ifdef HAVE_GLX
	RETVAL = 1;
#else
	RETVAL = 0;
#endif /* defined HAVE_GLX */
	OUTPUT:
	RETVAL

#// Test for GLpc
int
_have_glp()
	CODE:
#ifdef HAVE_GLpc
	RETVAL = 1;
#else
	RETVAL = 0;
#endif /* defined HAVE_GLpc */
	OUTPUT:
	RETVAL





# /* 13000 lines snipped */

##################### GLU #########################


############################## GLUT #########################


# /* This is assigned to GLX for now.  The glp*() functions should be split out */

#ifdef IN_POGL_GLX_XS

# /* The following material is directly copied from Stan Melax's original OpenGL-0.4 */


int
__had_dbuffer_hack()

#ifdef HAVE_GLpc			/* GLX */

#// $ID = glpcOpenWindow($x,$y,$w,$h,$pw,$steal,$event_mask,@attribs);
HV *
glpcOpenWindow(x,y,w,h,pw,event_mask,steal, ...)
    int	x
    int	y
    int	w
    int	h
    int	pw
    long	event_mask
    int	steal
    CODE:
{
    XEvent event;
    Window pwin = (Window)pw;
    unsigned int err;
    int *attributes = default_attributes + 1;
    int *a_buf = NULL;

    RETVAL = newHV(); /* Create hash to return GL Object info */

    if(items > NUM_ARG){
        int i;
        a_buf = (int *) malloc((items-NUM_ARG+2) * sizeof(int));
        a_buf[0] = GLX_DOUBLEBUFFER; /* Preallocate */
        attributes = a_buf + 1;
        for (i=NUM_ARG; i<items; i++) {
            attributes[i-NUM_ARG] = SvIV(ST(i));
        }
        attributes[items-NUM_ARG] = None;
    }
    if (debug) {
        int i;	
        for (i=0; attributes[i] != None; i++) {
            printf("att=%d %d\n", i, attributes[i]);

pogl_gl_top.xs  view on Meta::CPAN 

#endif	/* defined HAVE_GLX */

    if (!pwin) {
        pwin = RootWindow(dpy, vi->screen);
        if (debug) printf("Using root as parent window 0x%x\n", pwin);
    }
    if (steal) {
        win = nativeWindowId(dpy, pwin); /* What about depth/visual */
    } else {
        win = XCreateWindow(dpy, pwin, 
                x, y, w, h,
                0, vi->depth, InputOutput, vi->visual,
                CWBorderPixel|CWColormap|CWEventMask, &swa);
        /* NOTE: PDL code had CWBackPixel above */
    }
    if (!win) {
        croak("No Window");
    } else {
        if (debug) printf("win = 0x%x\n", win);
    }
    XMapWindow(dpy, win);
#ifndef HAVE_GLX  /* For OS/2 GLX emulation stuff -chm 2009.09.14 */
    /* On OS/2: cannot create a context before mapping something... */
    /* create a GLX context */
    ctx = glXCreateContext(dpy, vi, 0, GL_TRUE);
    if (!ctx)
        croak("No context!\n");

    LastEventMask = event_mask;
#else	/* HAVE_GLX, this is the default branch */
    if ( (event_mask & StructureNotifyMask) && !steal ) {
        XIfEvent(dpy, &event, WaitForNotify, (char*)win);
    }
#endif	/* not defined HAVE_GLX */

    /* connect the context to the window */
    if (!glXMakeCurrent(dpy, win, ctx))
        croak("Non current");

    if (debug)
        printf("Display=0x%x Window=0x%x Context=0x%x\n",dpy, win, ctx);

    /* Create the GL object hash information */
    hv_store(RETVAL, "Display", strlen("Display"), newSViv(PTR2IV(dpy)), 0);
    hv_store(RETVAL, "Window", strlen("Window"),   newSViv(  (IV) win ), 0);
    hv_store(RETVAL, "Context", strlen("Context"), newSViv(PTR2IV(ctx)), 0);

    hv_store(RETVAL, "GL_Version",strlen("GL_Version"), 
            newSVpv((char *) glGetString(GL_VERSION),0),0);
    hv_store(RETVAL, "GL_Vendor",strlen("GL_Vendor"), 
            newSVpv((char *) glGetString(GL_VENDOR),0),0);
    hv_store(RETVAL, "GL_Renderer",strlen("GL_Renderer"), 
            newSVpv((char *) glGetString(GL_RENDERER),0),0);

    /* clear the buffer */
    glClearColor(0,0,0,1);
    while ( (err = glGetError()) != GL_NO_ERROR ) {
        printf("ERROR issued in GL %s\n", gluErrorString(err));
    }
}
OUTPUT:
RETVAL

#// glpRasterFont(name,base,number,d)
int
glpRasterFont(name,base,number,d)
        char *name
        int base
        int number
        Display *d
        CODE:
        {
                XFontStruct *fi;
                int lb;
                fi = XLoadQueryFont(d,name);
                if(fi == NULL) {
                        die("No font %s found",name);
                }
                lb = glGenLists(number);
                if(lb == 0) {
                        die("No display lists left for font %s (need %d)",name,number);
                }
                glXUseXFont(fi->fid, base, number, lb);
                RETVAL=lb;
        }
        OUTPUT:
        RETVAL

#// glpPrintString(base,str);
void
glpPrintString(base,str)
        int base
        char *str
        CODE:
        {
                glPushAttrib(GL_LIST_BIT);
                glListBase(base);
                glCallLists(strlen(str),GL_UNSIGNED_BYTE,(GLubyte*)str);
                glPopAttrib();
        }

#// glpDisplay();
Display *
glpDisplay(name)
        char *name
	CODE:
	    /* get a connection */
	    if (!dpy_open) {
		dpy = XOpenDisplay(name);
		dpy_open = 1;
	    }
	    if (!dpy)
		croak("No display!");
	    RETVAL = dpy;
        OUTPUT:
	RETVAL

#// glpMoveResizeWindow($x, $y, $width, $height[, $winID[, $display]]);
void
glpMoveResizeWindow(x, y, width, height, w=win, d=dpy)
    void* d
    GLXDrawable w
    int x
    int y
    unsigned int width
    unsigned int height

#// glpMoveWindow($x, $y[, $winID[, $display]]);
void
glpMoveWindow(x, y, w=win, d=dpy)
    void* d
    GLXDrawable w
    int x
    int y

#// glpResizeWindow($width, $height[, $winID[, $display]])
void
glpResizeWindow(width, height, w=win, d=dpy)
    void* d
    GLXDrawable w
    unsigned int width
    unsigned int height

# If glpOpenWindow was used then glXSwapBuffers should be called
# without parameters (i.e. use the default parameters)

#// glXSwapBuffers([$winID[, $display]])
void
glXSwapBuffers(w=win,d=dpy)
	void *	d
	GLXDrawable	w
	CODE:
	{
	    glXSwapBuffers(d,w);
	}

#// XPending([$display]);
int
XPending(d=dpy)
	void *	d
	CODE:
	{
		RETVAL = XPending(d);
	}
	OUTPUT:
	RETVAL

#// glpXNextEvent([$display]);
void
glpXNextEvent(d=dpy)
	void *	d
	PPCODE:
	{
		XEvent event;
		char buf[10];
		KeySym ks;
		XNextEvent(d,&event);
		switch(event.type) {
			case ConfigureNotify:
				EXTEND(sp,3);
				PUSHs(sv_2mortal(newSViv(event.type)));
				PUSHs(sv_2mortal(newSViv(event.xconfigure.width)));
				PUSHs(sv_2mortal(newSViv(event.xconfigure.height)));				
				break;
			case KeyPress:
			case KeyRelease:
				EXTEND(sp,2);
				PUSHs(sv_2mortal(newSViv(event.type)));
				XLookupString(&event.xkey,buf,sizeof(buf),&ks,0);
				buf[0]=(char)ks;buf[1]='\0';
				PUSHs(sv_2mortal(newSVpv(buf,1)));
				break;
			case ButtonPress:
			case ButtonRelease:
				EXTEND(sp,7);
				PUSHs(sv_2mortal(newSViv(event.type)));
				PUSHs(sv_2mortal(newSViv(event.xbutton.button)));
				PUSHs(sv_2mortal(newSViv(event.xbutton.x)));
				PUSHs(sv_2mortal(newSViv(event.xbutton.y)));
				PUSHs(sv_2mortal(newSViv(event.xbutton.x_root)));
				PUSHs(sv_2mortal(newSViv(event.xbutton.y_root)));
				PUSHs(sv_2mortal(newSViv(event.xbutton.state)));
				break;
			case MotionNotify:
				EXTEND(sp,4);
				PUSHs(sv_2mortal(newSViv(event.type)));
				PUSHs(sv_2mortal(newSViv(event.xmotion.state)));
				PUSHs(sv_2mortal(newSViv(event.xmotion.x)));
				PUSHs(sv_2mortal(newSViv(event.xmotion.y)));
				break;
			case Expose:
			default:
				EXTEND(sp,1);
				PUSHs(sv_2mortal(newSViv(event.type)));
				break;
		}
	}

#// glpXQueryPointer([$winID[, $display]]);
void
glpXQueryPointer(w=win,d=dpy)
	void *	d
	GLXDrawable	w
	PPCODE:
	{

pogl_gl_top.xs  view on Meta::CPAN 

	{
		GLsizei w,h;
		int d,i;
		char buf[250];
		unsigned char *image;
		FILE *fp;
		char *ret;

		fp=fopen(file,"r");

		if(!fp)	croak("couldn't open file %s",file);

		ret = fgets(buf,250,fp);		/* P3 */

		if (buf[0] != 'P' || buf[1] != '3')
			croak("Format is not P3 in file %s",file);

		ret = fgets(buf,250,fp);

		while (buf[0] == '#' && fgets(buf,250,fp));	/* Empty */

		if (2 != sscanf(buf,"%d%d",&w,&h))
			croak("couldn't read image size from file %s",file);
		if (1 != fscanf(fp,"%d",&d))
			croak("couldn't read image depth from file %s",file);
		if(d != 255)
			croak("image depth != 255 in file %s unsupported",file);
		if(w>10000 || h>10000)
			croak("suspicious size w=%d d=%d in file %s", w, d, file);

		New(1431, image, w*h*3, unsigned char);

		for(i=0;i<w*h*3;i++) {
			int v;

			if (1 != fscanf(fp,"%d",&v)) {
				Safefree(image);
				croak("Error reading number #%d of %d from file %s", i, w*h*3,file);
			}

			image[i]=(unsigned char) v;
		}

		fclose(fp);

		glTexImage2D(GL_TEXTURE_2D, 0, 3, w,h, 
			0, GL_RGB, GL_UNSIGNED_BYTE,image);
	}

#//# glpHasGLUT();
int
glpHasGLUT()
	CODE:
	{
#if defined(HAVE_GLUT) || defined(HAVE_FREEGLUT)
		RETVAL = 1;
#else
		RETVAL = 0;
#endif /* defined HAVE_GLUT or HAVE_FREEGLUT */
	}
	OUTPUT:
		RETVAL


#//# glpHasGPGPU();
int
glpHasGPGPU()
	CODE:
		RETVAL = gpgpu_size();
	OUTPUT:
		RETVAL

#endif /* End IN_POGL_GLX_XS */



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