/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2004 by Ilya Korniyko  <k_ilya@ukr.net>                 *
 *   Adapted from Brian Paul's glxinfo from Mesa demos (http:/www.mesa3d.org)
 *   Copyright (C) 1999-2002  Brian Paul                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#if defined(INFO_OPENGL_AVAILABLE)

#define KCMGL_DO_GLU

#include <qregexp.h>
#include <qlistview.h>
#include <qfile.h>
#include <qstring.h>

#include <klocale.h>
#include <kmessagebox.h>
#include <kdebug.h>

#include <X11/Xlib.h>
#include <X11/Xutil.h>

#ifdef KCMGL_DO_GLU
#include <GL/glu.h>
#endif

#include <GL/gl.h>
#include <GL/glext.h>
#include <GL/glx.h>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

static bool IsDirect;

static struct glinfo {
      const char *serverVendor;
      const char *serverVersion;
      const char *serverExtensions;
      const char *clientVendor;
      const char *clientVersion;
      const char *clientExtensions;
      const char *glxExtensions;
      const char *glVendor;
      const char *glRenderer;
      const char *glVersion;
      const char *glExtensions;
      const char *gluVersion;
      const char *gluExtensions;
      char *displayName;
} gli;

static struct {
	QString module,
		pci,
		vendor,
		device,
		subvendor,
		rev;
} dri_info;

static int ReadPipe(QString FileName, QStringList &list)
{
    FILE *pipe;

    if ((pipe = popen(FileName.ascii(), "r")) == NULL) {
	pclose(pipe);
	return 0;
    }

    QTextStream t(pipe, IO_ReadOnly);

    while (!t.atEnd()) list.append(t.readLine());

    pclose(pipe);
    return list.count();
}

#if defined(Q_OS_LINUX)

#define INFO_DRI "/proc/dri/0/name"

static bool get_dri_device()
{
    QFile file;
    file.setName(INFO_DRI);
    if (!file.exists() || !file.open(IO_ReadOnly))
	return false;

    QTextStream stream(&file);
    QString line = stream.readLine();
    if (!line.isEmpty()) {
	dri_info.module = line.mid(0, line.find(0x20));

	// possible formats, for regression testing
	// line = " PCI:01:00:0";
	// line = " pci:0000:01:00.0"
	QRegExp rx = QRegExp("\\b[Pp][Cc][Ii][:]([0-9a-fA-F]+[:])?([0-9a-fA-F]+[:][0-9a-fA-F]+[:.][0-9a-fA-F]+)\\b");
	if (rx.search(line)>0)	 {
		dri_info.pci = rx.cap(2);
		int end = dri_info.pci.findRev(':');
		int end2 = dri_info.pci.findRev('.');
		if (end2>end) end=end2;
		dri_info.pci[end]='.';

		QString cmd = QString("lspci -m -v -s ") + dri_info.pci;
		QStringList pci_info;
		int num;
		if (((num = ReadPipe(cmd, pci_info)) ||
		(num = ReadPipe("/sbin/"+cmd, pci_info)) ||
		(num = ReadPipe("/usr/sbin/"+cmd, pci_info)) ||
		(num = ReadPipe("/usr/local/sbin/"+cmd, pci_info))) && num>=7) {
			for (int i=2; i<=6; i++) {
				line = pci_info[i];
				line.remove(QRegExp("[^:]*:[ ]*"));
				switch (i){
					case 2: dri_info.vendor = line;    break;
					case 3: dri_info.device = line;    break;
					case 4: dri_info.subvendor = line; break;
					case 6: dri_info.rev = line;       break;
				}
			}
			return true;
		}
	}
    }

    return false;
}

#elif defined(Q_OS_FREEBSD)

static bool get_dri_device() {

	QStringList pci_info;
	if (ReadPipe("sysctl -n hw.dri.0.name",pci_info)) {
		dri_info.module = pci_info[0].mid(0, pci_info[0].find(0x20));
		}
	return false;
}

#else

static bool get_dri_device() { return false; }

#endif

static void
mesa_hack(Display *dpy, int scrnum)
{
   static int attribs[] = {
      GLX_RGBA,
      GLX_RED_SIZE, 1,
      GLX_GREEN_SIZE, 1,
      GLX_BLUE_SIZE, 1,
      GLX_DEPTH_SIZE, 1,
      GLX_STENCIL_SIZE, 1,
      GLX_ACCUM_RED_SIZE, 1,
      GLX_ACCUM_GREEN_SIZE, 1,
      GLX_ACCUM_BLUE_SIZE, 1,
      GLX_ACCUM_ALPHA_SIZE, 1,
      GLX_DOUBLEBUFFER,
      None
   };
   XVisualInfo *visinfo;

   visinfo = glXChooseVisual(dpy, scrnum, attribs);
   if (visinfo)
      XFree(visinfo);
}


static void
print_extension_list(const char *ext, QListViewItem *l1)
{
   int i, j;

   if (!ext || !ext[0])
      return;
   QString *qext = new QString(ext);
   QListViewItem *l2 = NULL;

   i = j = 0;
   while (1) {
      if (ext[j] == ' ' || ext[j] == 0) {
         /* found end of an extension name */
         const int len = j - i;
         /* print the extension name between ext[i] and ext[j] */
	 if (!l2) l2 = new QListViewItem(l1, qext->mid(i, len));
	 else l2 = new QListViewItem(l1, l2, qext->mid(i, len));
	 i=j;
         if (ext[j] == 0) {
            break;
         }
         else {
            i++;
            j++;
            if (ext[j] == 0)
               break;
         }
      }
      j++;
   }
}

#if defined(GLX_ARB_get_proc_address) && defined(__GLXextFuncPtr)
extern "C" {
	extern __GLXextFuncPtr glXGetProcAddressARB (const GLubyte *);
}
#endif

static void
print_limits(QListViewItem *l1, const char * glExtensions, bool GetProcAddress)
{
 /*  TODO
      GL_SAMPLE_BUFFERS
      GL_SAMPLES
      GL_COMPRESSED_TEXTURE_FORMATS
*/

  struct token_name {
      GLuint type;  // count and flags, !!! count must be <=2 for now
      GLenum token;
      const QString name;
   };

   struct token_group {
   	int count;
	int type;
	const token_name *group;
	const QString descr;
	const char *ext;
   };

   QListViewItem *l2 = NULL, *l3 = NULL;
#if defined(PFNGLGETPROGRAMIVARBPROC)
   PFNGLGETPROGRAMIVARBPROC kcm_glGetProgramivARB = NULL;
#endif

   #define KCMGL_FLOAT 128
   #define KCMGL_PROG 256
   #define KCMGL_COUNT_MASK(x) (x & 127)
   #define KCMGL_SIZE(x) (sizeof(x)/sizeof(x[0]))

   const struct token_name various_limits[] = {
      { 1, GL_MAX_LIGHTS, 		i18n("Max. number of light sources") },
      { 1, GL_MAX_CLIP_PLANES,		i18n("Max. number of clipping planes") },
      { 1, GL_MAX_PIXEL_MAP_TABLE, 	i18n("Max. pixel map table size") },
      { 1, GL_MAX_LIST_NESTING, 	i18n("Max. display list nesting level") },
      { 1, GL_MAX_EVAL_ORDER, 		i18n("Max. evaluator order") },
      { 1, GL_MAX_ELEMENTS_VERTICES, 	i18n("Max. recommended vertex count") },
      { 1, GL_MAX_ELEMENTS_INDICES, 	i18n("Max. recommended index count") },
#ifdef GL_QUERY_COUNTER_BITS
      { 1, GL_QUERY_COUNTER_BITS, 	i18n("Occlusion query counter bits")},
#endif
#ifdef GL_MAX_VERTEX_UNITS_ARB
      { 1, GL_MAX_VERTEX_UNITS_ARB, 	i18n("Max. vertex blend matrices") },
#endif
#ifdef GL_MAX_PALETTE_MATRICES_ARB
      { 1, GL_MAX_PALETTE_MATRICES_ARB, i18n("Max. vertex blend matrix palette size") },
#endif
      {0,0,0}
     };

   const struct token_name texture_limits[] = {
      { 1, GL_MAX_TEXTURE_SIZE, 	i18n("Max. texture size") },
      { 1, GL_MAX_TEXTURE_UNITS_ARB, 	i18n("Num. of texture units") },
      { 1, GL_MAX_3D_TEXTURE_SIZE, 		i18n("Max. 3D texture size") },
      { 1, GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, 	i18n("Max. cube map texture size") },
#ifdef GL_MAX_RECTANGLE_TEXTURE_SIZE_NV
      { 1, GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, 	i18n("Max. rectangular texture size") },
#endif
      { 1 | KCMGL_FLOAT, GL_MAX_TEXTURE_LOD_BIAS_EXT, i18n("Max. texture LOD bias") },
      { 1, GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, 	i18n("Max. anisotropy filtering level") },
      { 1, GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, i18n("Num. of compressed texture formats") },
      {0,0,0}
     };

   const struct token_name float_limits[] = {
      { 2 | KCMGL_FLOAT, GL_ALIASED_POINT_SIZE_RANGE, 	"ALIASED_POINT_SIZE_RANGE" },
      { 2 | KCMGL_FLOAT, GL_SMOOTH_POINT_SIZE_RANGE, 	"SMOOTH_POINT_SIZE_RANGE" },
      { 1 | KCMGL_FLOAT, GL_SMOOTH_POINT_SIZE_GRANULARITY,"SMOOTH_POINT_SIZE_GRANULARITY"},
      { 2 | KCMGL_FLOAT, GL_ALIASED_LINE_WIDTH_RANGE, 	"ALIASED_LINE_WIDTH_RANGE" },
      { 2 | KCMGL_FLOAT, GL_SMOOTH_LINE_WIDTH_RANGE, 	"SMOOTH_LINE_WIDTH_RANGE" },
      { 1 | KCMGL_FLOAT, GL_SMOOTH_LINE_WIDTH_GRANULARITY,"SMOOTH_LINE_WIDTH_GRANULARITY"},
      {0,0,0}
     };

   const struct token_name stack_depth[] = {
      { 1, GL_MAX_MODELVIEW_STACK_DEPTH, 	"MAX_MODELVIEW_STACK_DEPTH" },
      { 1, GL_MAX_PROJECTION_STACK_DEPTH, 	"MAX_PROJECTION_STACK_DEPTH" },
      { 1, GL_MAX_TEXTURE_STACK_DEPTH, 		"MAX_TEXTURE_STACK_DEPTH" },
      { 1, GL_MAX_NAME_STACK_DEPTH, 		"MAX_NAME_STACK_DEPTH" },
      { 1, GL_MAX_ATTRIB_STACK_DEPTH, 		"MAX_ATTRIB_STACK_DEPTH" },
      { 1, GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, 	"MAX_CLIENT_ATTRIB_STACK_DEPTH" },
      { 1, GL_MAX_COLOR_MATRIX_STACK_DEPTH, 	"MAX_COLOR_MATRIX_STACK_DEPTH" },
#ifdef GL_MAX_MATRIX_PALETTE_STACK_DEPTH_ARB
      { 1, GL_MAX_MATRIX_PALETTE_STACK_DEPTH_ARB,"MAX_MATRIX_PALETTE_STACK_DEPTH"},
#endif
      {0,0,0}
   };

#ifdef GL_ARB_fragment_program
   const struct token_name arb_fp[] = {
    { 1, GL_MAX_TEXTURE_COORDS_ARB, "MAX_TEXTURE_COORDS" },
    { 1, GL_MAX_TEXTURE_IMAGE_UNITS_ARB, "MAX_TEXTURE_IMAGE_UNITS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_ENV_PARAMETERS_ARB, "MAX_PROGRAM_ENV_PARAMETERS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB, "MAX_PROGRAM_LOCAL_PARAMETERS" },
    { 1, GL_MAX_PROGRAM_MATRICES_ARB, "MAX_PROGRAM_MATRICES" },
    { 1, GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, "MAX_PROGRAM_MATRIX_STACK_DEPTH" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_INSTRUCTIONS_ARB, "MAX_PROGRAM_INSTRUCTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB, "MAX_PROGRAM_ALU_INSTRUCTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB, "MAX_PROGRAM_TEX_INSTRUCTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB, "MAX_PROGRAM_TEX_INDIRECTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_TEMPORARIES_ARB, "MAX_PROGRAM_TEMPORARIES" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_PARAMETERS_ARB, "MAX_PROGRAM_PARAMETERS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_ATTRIBS_ARB, "MAX_PROGRAM_ATTRIBS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB, "MAX_PROGRAM_NATIVE_INSTRUCTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB, "MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB, "MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB, "MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB, "MAX_PROGRAM_NATIVE_TEMPORARIES" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB, "MAX_PROGRAM_NATIVE_PARAMETERS" },
    { 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB, "MAX_PROGRAM_NATIVE_ATTRIBS" },
    {0,0,0}
   };
#endif

#ifdef GL_ARB_vertex_program
   const struct token_name arb_vp[] = {
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_ENV_PARAMETERS_ARB,"MAX_PROGRAM_ENV_PARAMETERS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB,"MAX_PROGRAM_LOCAL_PARAMETERS"},
{ 1, GL_MAX_VERTEX_ATTRIBS_ARB, "MAX_VERTEX_ATTRIBS"},
{ 1, GL_MAX_PROGRAM_MATRICES_ARB,"MAX_PROGRAM_MATRICES"},
{ 1, GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB,"MAX_PROGRAM_MATRIX_STACK_DEPTH"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_INSTRUCTIONS_ARB,"MAX_PROGRAM_INSTRUCTIONS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_TEMPORARIES_ARB,"MAX_PROGRAM_TEMPORARIES"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_PARAMETERS_ARB,"MAX_PROGRAM_PARAMETERS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_ATTRIBS_ARB,"MAX_PROGRAM_ATTRIBS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB,"MAX_PROGRAM_ADDRESS_REGISTERS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,"MAX_PROGRAM_NATIVE_INSTRUCTIONS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,"MAX_PROGRAM_NATIVE_TEMPORARIES"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB,"MAX_PROGRAM_NATIVE_PARAMETERS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB,"MAX_PROGRAM_NATIVE_ATTRIBS"},
{ 1 | KCMGL_PROG, GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB ,"MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS"},
{0,0,0}
};
#endif

#ifdef GL_ARB_vertex_shader
   const struct token_name arb_vs[] = {
    { 1, GL_MAX_VERTEX_ATTRIBS_ARB,"MAX_VERTEX_ATTRIBS"},
    { 1, GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,"MAX_VERTEX_UNIFORM_COMPONENTS"},
    { 1, GL_MAX_VARYING_FLOATS_ARB,"MAX_VARYING_FLOATS"},
    { 1, GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,"MAX_COMBINED_TEXTURE_IMAGE_UNITS"},
    { 1, GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,"MAX_VERTEX_TEXTURE_IMAGE_UNITS"},
    { 1, GL_MAX_TEXTURE_IMAGE_UNITS_ARB,"MAX_TEXTURE_IMAGE_UNITS"},
    { 1, GL_MAX_TEXTURE_COORDS_ARB,"MAX_TEXTURE_COORDS"},
    {0,0,0}
   };
#endif

#ifdef GL_ARB_fragment_shader
   const struct token_name arb_fs[] = {
    { 1, GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,"MAX_FRAGMENT_UNIFORM_COMPONENTS"},
    { 1, GL_MAX_TEXTURE_IMAGE_UNITS_ARB,"MAX_TEXTURE_IMAGE_UNITS"},
    { 1, GL_MAX_TEXTURE_COORDS_ARB,"MAX_TEXTURE_COORDS"},
    {0,0,0}
   };
#endif

   const struct token_name frame_buffer_props[] = {
      { 2, GL_MAX_VIEWPORT_DIMS, 	i18n("Max. viewport dimensions") },
      { 1, GL_SUBPIXEL_BITS, 		i18n("Subpixel bits") },
      { 1, GL_AUX_BUFFERS, 		i18n("Aux. buffers")},
      {0,0,0}
    };

   const struct token_group groups[] =
   {
    {KCMGL_SIZE(frame_buffer_props), 0, frame_buffer_props, i18n("Frame buffer properties"), NULL},
    {KCMGL_SIZE(various_limits), 0, texture_limits, i18n("Texturing"), NULL},
    {KCMGL_SIZE(various_limits), 0, various_limits, i18n("Various limits"), NULL},
    {KCMGL_SIZE(float_limits), 0, float_limits, i18n("Points and lines"), NULL},
    {KCMGL_SIZE(stack_depth), 0, stack_depth, i18n("Stack depth limits"), NULL},
#ifdef GL_ARB_vertex_program
    {KCMGL_SIZE(arb_vp), GL_VERTEX_PROGRAM_ARB, arb_vp, "ARB_vertex_program", "GL_ARB_vertex_program"},
#endif
#ifdef GL_ARB_fragment_program
    {KCMGL_SIZE(arb_fp), GL_FRAGMENT_PROGRAM_ARB, arb_fp, "ARB_fragment_program", "GL_ARB_fragment_program"},
#endif
#ifdef GL_ARB_vertex_shader
    {KCMGL_SIZE(arb_vs), 0, arb_vs, "ARB_vertex_shader", "GL_ARB_vertex_shader"},
#endif
#ifdef GL_ARB_fragment_shader
    {KCMGL_SIZE(arb_fs), 0, arb_fs, "ARB_fragment_shader", "GL_ARB_fragment_shader"},
#endif
   };

#if defined(GLX_ARB_get_proc_address) && defined(PFNGLGETPROGRAMIVARBPROC)
   if (GetProcAddress && strstr(glExtensions, "GL_ARB_vertex_program"))
   kcm_glGetProgramivARB = (PFNGLGETPROGRAMIVARBPROC) glXGetProcAddressARB((const GLubyte *)"glGetProgramivARB");
#endif

   for (uint i = 0; i<KCMGL_SIZE(groups); i++) {
   	if (groups[i].ext && !strstr(glExtensions, groups[i].ext)) continue;

	if (l2) l2 = new QListViewItem(l1, l2, groups[i].descr);
   	   else l2 = new QListViewItem(l1, groups[i].descr);
	l3 = NULL;
   	const struct token_name *cur_token;
	for (cur_token = groups[i].group; cur_token->type; cur_token++) {

   		bool tfloat = cur_token->type & KCMGL_FLOAT;
   		bool tprog = cur_token->type & KCMGL_PROG;
		int count = KCMGL_COUNT_MASK(cur_token->type);
		GLint max[2]={0,0};
   		GLfloat fmax[2]={0.0,0.0};

#if defined(PFNGLGETPROGRAMIVARBPROC) && defined(GL_ARB_vertex_program)
		if (tprog && kcm_glGetProgramivARB)
			kcm_glGetProgramivARB(groups[i].type, cur_token->token, max);
		else
#endif
		if (tfloat) glGetFloatv(cur_token->token, fmax);
   			else glGetIntegerv(cur_token->token, max);

		if (glGetError() == GL_NONE) {
			QString s;
		 	if (!tfloat && count == 1) s = QString::number(max[0]); else
		 	if (!tfloat && count == 2) s = QString("%1, %2").arg(max[0]).arg(max[1]); else
		 	if (tfloat && count == 2) s = QString("%1 - %2").arg(fmax[0],0,'f',6).arg(fmax[1],0,'f',6); else
			if (tfloat && count == 1) s = QString::number(fmax[0],'f',6);
   			if (l3) l3 = new QListViewItem(l2, l3, cur_token->name, s);
   	   			else l3 = new QListViewItem(l2, cur_token->name, s);

		}
	}

     }
}


static QListViewItem *print_screen_info(QListViewItem *l1, QListViewItem *after)
{
   	QListViewItem *l2 = NULL, *l3 = NULL;

   	if (after) l1= new QListViewItem(l1,after,IsDirect ? i18n("Direct Rendering") : i18n("Indirect Rendering"));
         	else l1= new QListViewItem(l1,IsDirect ? i18n("Direct Rendering") : i18n("Indirect Rendering"));
   	if (IsDirect)
   	 	if (get_dri_device())  {
      			l2 = new QListViewItem(l1, i18n("3D Accelerator"));
    			l2->setOpen(true);
   			l3 = new QListViewItem(l2, l3, i18n("Vendor"), dri_info.vendor);
   			l3 = new QListViewItem(l2, l3, i18n("Device"), dri_info.device);
   			l3 = new QListViewItem(l2, l3, i18n("Subvendor"), dri_info.subvendor);
   			l3 = new QListViewItem(l2, l3, i18n("Revision"), dri_info.rev);
		}
		else l2=new QListViewItem(l1, l2, i18n("3D Accelerator"),i18n("unknown"));
    	if (l2) l2 = new QListViewItem(l1, l2, i18n("Driver"));
       		else l2 = new QListViewItem(l1, i18n("Driver"));
    	l2->setOpen(true);

  	l3 = new QListViewItem(l2, i18n("Vendor"),gli.glVendor);
    	l3 = new QListViewItem(l2, l3, i18n("Renderer"), gli.glRenderer);
    	l3 = new QListViewItem(l2, l3, i18n("OpenGL version"), gli.glVersion);

    	if (IsDirect) {
    		if (!dri_info.module) dri_info.module = i18n("unknown");
    		l3 = new QListViewItem(l2, l3, i18n("Kernel module"), dri_info.module);
    	}

    	l3 = new QListViewItem(l2, l3, i18n("OpenGL extensions"));
    	print_extension_list(gli.glExtensions,l3);

    	l3 = new QListViewItem(l2, l3, i18n("Implementation specific"));
    	print_limits(l3, gli.glExtensions, strstr(gli.clientExtensions, "GLX_ARB_get_proc_address") != NULL);

        return l1;
}

void print_glx_glu(QListViewItem *l1, QListViewItem *l2)
{
   QListViewItem *l3;

   l2=new QListViewItem(l1, l2, i18n("GLX"));
   l3 = new QListViewItem(l2, i18n("server GLX vendor"),gli.serverVendor);
   l3 = new QListViewItem(l2, l3, i18n("server GLX version"),gli.serverVersion);
   l3 = new QListViewItem(l2, l3, i18n("server GLX extensions"));
   print_extension_list(gli.serverExtensions,l3);

    l3 = new QListViewItem(l2, l3, i18n("client GLX vendor"),gli.clientVendor);
    l3 = new QListViewItem(l2, l3, i18n("client GLX version"),gli.clientVersion);
    l3 = new QListViewItem(l2, l3, i18n("client GLX extensions"));
    print_extension_list(gli.clientExtensions,l3);
    l3 = new QListViewItem(l2, l3, i18n("GLX extensions"));
    print_extension_list(gli.glxExtensions,l3);

#ifdef KCMGL_DO_GLU
    l2 = new QListViewItem(l1, l2, i18n("GLU"));
    l3 = new QListViewItem(l2, i18n("GLU version"), gli.gluVersion);
    l3 = new QListViewItem(l2, l3, i18n("GLU extensions"));
    print_extension_list(gli.gluExtensions,l3);
#endif

}

static QListViewItem *get_gl_info(Display *dpy, int scrnum, Bool allowDirect,QListViewItem *l1, QListViewItem *after)
{
   Window win;
   int attribSingle[] = {
      GLX_RGBA,
      GLX_RED_SIZE, 1,
      GLX_GREEN_SIZE, 1,
      GLX_BLUE_SIZE, 1,
      None };
   int attribDouble[] = {
      GLX_RGBA,
      GLX_RED_SIZE, 1,
      GLX_GREEN_SIZE, 1,
      GLX_BLUE_SIZE, 1,
      GLX_DOUBLEBUFFER,
      None };

   XSetWindowAttributes attr;
   unsigned long mask;
   Window root;
   GLXContext ctx;
   XVisualInfo *visinfo;
   int width = 100, height = 100;
   QListViewItem *result = after;

   root = RootWindow(dpy, scrnum);

   visinfo = glXChooseVisual(dpy, scrnum, attribSingle);
   if (!visinfo) {
      visinfo = glXChooseVisual(dpy, scrnum, attribDouble);
      if (!visinfo) {
		   kdDebug() << "Error: couldn't find RGB GLX visual\n";
         return result;
      }
   }

   attr.background_pixel = 0;
   attr.border_pixel = 0;
   attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
   attr.event_mask = StructureNotifyMask | ExposureMask;
   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
   win = XCreateWindow(dpy, root, 0, 0, width, height,
   			0, visinfo->depth, InputOutput,
		       visinfo->visual, mask, &attr);

   ctx = glXCreateContext( dpy, visinfo, NULL, allowDirect );
   if (!ctx) {
		kdDebug() << "Error: glXCreateContext failed\n";
      XDestroyWindow(dpy, win);
      return result;
   }

   if (glXMakeCurrent(dpy, win, ctx)) {
      gli.serverVendor = glXQueryServerString(dpy, scrnum, GLX_VENDOR);
      gli.serverVersion = glXQueryServerString(dpy, scrnum, GLX_VERSION);
      gli.serverExtensions = glXQueryServerString(dpy, scrnum, GLX_EXTENSIONS);
      gli.clientVendor = glXGetClientString(dpy, GLX_VENDOR);
      gli.clientVersion = glXGetClientString(dpy, GLX_VERSION);
      gli.clientExtensions = glXGetClientString(dpy, GLX_EXTENSIONS);
      gli.glxExtensions = glXQueryExtensionsString(dpy, scrnum);
      gli.glVendor = (const char *) glGetString(GL_VENDOR);
      gli.glRenderer = (const char *) glGetString(GL_RENDERER);
      gli.glVersion = (const char *) glGetString(GL_VERSION);
      gli.glExtensions = (const char *) glGetString(GL_EXTENSIONS);
      gli.displayName = NULL;
#ifdef KCMGL_DO_GLU
      gli.gluVersion = (const char *) gluGetString(GLU_VERSION);
      gli.gluExtensions = (const char *) gluGetString(GLU_EXTENSIONS);
#endif
      IsDirect = glXIsDirect(dpy, ctx);

      result = print_screen_info(l1, after);
   }
   else {
      kdDebug() << "Error: glXMakeCurrent failed\n";
      glXDestroyContext(dpy, ctx);
   }

   glXDestroyContext(dpy, ctx);
   XDestroyWindow(dpy, win);
   return result;

}


static bool GetInfo_OpenGL_Generic( QListView *lBox )
{
   QListViewItem *l1, *l2 = NULL;

   char *displayName = NULL;
   Display *dpy;
   int numScreens, scrnum;

   dpy = XOpenDisplay(displayName);
   if (!dpy) {
//      kdDebug() << "Error: unable to open display " << displayName << endl;
      return false;
   }

    lBox->addColumn(i18n("Information") );
    lBox->addColumn(i18n("Value") );

    l1 = new QListViewItem(lBox, i18n("Name of the Display"), DisplayString(dpy));
    l1->setOpen(true);
    l1->setSelectable(false);
    l1->setExpandable(false);

    numScreens = ScreenCount(dpy);

  scrnum = 0;
#ifdef KCMGL_MANY_SCREENS
      for (; scrnum < numScreens; scrnum++)
#endif
      {
         mesa_hack(dpy, scrnum);

	 l2 = get_gl_info(dpy, scrnum, true, l1, l2);
	 if (l2) l2->setOpen(true);

	 if (IsDirect) l2 = get_gl_info(dpy, scrnum, false, l1, l2);

//   TODO      print_visual_info(dpy, scrnum, mode);
      }
    if (l2)
	print_glx_glu(l1, l2);
    else
	KMessageBox::error(0, i18n("Could not initialize OpenGL"));

    XCloseDisplay(dpy);
    return true;
   }

bool GetInfo_OpenGL(QListView * lBox)
{
    return GetInfo_OpenGL_Generic(lBox);
}

#endif /* INFO_OPENGL_AVAILABLE */

