/* $Id: fakeglx.c,v 1.59 2001/10/22 22:45:18 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 4.1
*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This is an emulation of the GLX API which allows Mesa/GLX-based programs
* to run on X servers which do not have the real GLX extension.
*
* Thanks to the contributors:
*
* Initial version: Philip Brown (phil@bolthole.com)
* Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
* Further visual-handling refinements: Wolfram Gloger
* (wmglo@Dent.MED.Uni-Muenchen.DE).
*
* Notes:
* Don't be fooled, stereo isn't supported yet.
*/
#include "glxheader.h"
#include "glxapi.h"
#include "GL/xmesa.h"
#include "context.h"
#include "config.h"
#include "macros.h"
#include "mem.h"
#include "mmath.h"
#include "mtypes.h"
#include "xfonts.h"
#include "xmesaP.h"
/* This indicates the client-side GLX API and GLX encoder version. */
#define CLIENT_MAJOR_VERSION 1
#define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
/* This indicates the server-side GLX decoder version.
* GLX 1.4 indicates OpenGL 1.3 support
*/
#define SERVER_MAJOR_VERSION 1
#define SERVER_MINOR_VERSION 4
/* This is appended onto the glXGetClient/ServerString version strings. */
#define MESA_GLX_VERSION "Mesa 4.1"
/* Who implemented this GLX? */
#define VENDOR "Brian Paul"
/* Silence compiler warnings */
extern void Fake_glXDummyFunc( void );
void Fake_glXDummyFunc( void )
{
(void) kernel8;
(void) DitherValues;
(void) HPCR_DRGB;
(void) kernel1;
}
/*
* Our fake GLX context will contain a "real" GLX context and an XMesa context.
*
* Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
* and vice versa.
*
* We really just need this structure in order to make the libGL functions
* glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
* work correctly.
*/
struct fake_glx_context {
__GLXcontext glxContext; /* this MUST be first! */
XMesaContext xmesaContext;
};
/**********************************************************************/
/*** GLX Visual Code ***/
/**********************************************************************/
#define DONT_CARE -1
#define MAX_VISUALS 100
static XMesaVisual VisualTable[MAX_VISUALS];
static int NumVisuals = 0;
/*
* This struct and some code fragments borrowed
* from Mark Kilgard's GLUT library.
*/
typedef struct _OverlayInfo {
/* Avoid 64-bit portability problems by being careful to use
longs due to the way XGetWindowProperty is specified. Note
that these parameters are passed as CARD32s over X
protocol. */
unsigned long overlay_visual;
long transparent_type;
long value;
long layer;
} OverlayInfo;
/* Macro to handle c_class vs class field name in XVisualInfo struct */
#if defined(__cplusplus) || defined(c_plusplus)
#define CLASS c_class
#else
#define CLASS class
#endif
/*
* Test if the given XVisualInfo is usable for Mesa rendering.
*/
static GLboolean is_usable_visual( XVisualInfo *vinfo )
{
switch (vinfo->CLASS) {
case StaticGray:
case GrayScale:
/* Any StaticGray/GrayScale visual works in RGB or CI mode */
return GL_TRUE;
case StaticColor:
case PseudoColor:
/* Any StaticColor/PseudoColor visual of at least 4 bits */
if (vinfo->depth>=4) {
return GL_TRUE;
}
else {
return GL_FALSE;
}
case TrueColor:
case DirectColor:
/* Any depth of TrueColor or DirectColor works in RGB mode */
return GL_TRUE;
default:
/* This should never happen */
return GL_FALSE;
}
}
/*
* Return the level (overlay, normal, underlay) of a given XVisualInfo.
* Input: dpy - the X display
* vinfo - the XVisualInfo to test
* Return: level of the visual:
* 0 = normal planes
* >0 = overlay planes
* <0 = underlay planes
*/
static int level_of_visual( Display *dpy, XVisualInfo *vinfo )
{
Atom overlayVisualsAtom;
OverlayInfo *overlay_info = NULL;
int numOverlaysPerScreen;
Status status;
Atom actualType;
int actualFormat;
unsigned long sizeData, bytesLeft;
int i;
/*
* The SERVER_OVERLAY_VISUALS property on the root window contains
* a list of overlay visuals. Get that list now.
*/
overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
if (overlayVisualsAtom == None) {
return 0;
}
status = XGetWindowProperty(dpy, RootWindow( dpy, vinfo->screen ),
overlayVisualsAtom, 0L, (long) 10000, False,
overlayVisualsAtom, &actualType, &actualFormat,
&sizeData, &bytesLeft,
(unsigned char **) &overlay_info );
if (status != Success || actualType != overlayVisualsAtom ||
actualFormat != 32 || sizeData < 4) {
/* something went wrong */
XFree((void *) overlay_info);
return 0;
}
/* search the overlay visual list for the visual ID of interest */
numOverlaysPerScreen = (int) (sizeData / 4);
for (i=0;i<numOverlaysPerScreen;i++) {
OverlayInfo *ov;
ov = overlay_info + i;
if (ov->overlay_visual==vinfo->visualid) {
/* found the visual */
if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
int level = ov->layer;
XFree((void *) overlay_info);
return level;
}
else {
XFree((void *) overlay_info);
return 0;
}
}
}
/* The visual ID was not found in the overlay list. */
XFree((void *) overlay_info);
return 0;
}
/*
* Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
* configuration in our list of GLX visuals.
*/
static XMesaVisual
save_glx_visual( Display *dpy, XVisualInfo *vinfo,
GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
GLboolean stereoFlag,
GLint depth_size, GLint stencil_size,
GLint accumRedSize, GLint accumGreenSize,
GLint accumBlueSize, GLint accumAlphaSize,
GLint level )
{
GLboolean ximageFlag = GL_TRUE;
XMesaVisual xmvis;
GLint i;
GLboolean comparePointers;
if (dbFlag) {
/* Check if the MESA_BACK_BUFFER env var is set */
char *backbuffer = getenv("MESA_BACK_BUFFER");
if (backbuffer) {
if (backbuffer[0]=='p' || backbuffer[0]=='P') {
ximageFlag = GL_FALSE;
}
else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
ximageFlag = GL_TRUE;
}
else {
fprintf(stderr, "Mesa: invalid value for MESA_BACK_BUFFER ");
fprintf(stderr, "environment variable, using an XImage.\n");
}
}
}
/* Comparing IDs uses less memory but sometimes fails. */
/* XXX revisit this after 3.0 is finished. */
if (getenv("MESA_GLX_VISUAL_HACK"))
comparePointers = GL_TRUE;
else
comparePointers = GL_FALSE;
/* First check if a matching visual is already in the list */
for (i=0; i<NumVisuals; i++) {
XMesaVisual v = VisualTable[i];
if (v->display == dpy
&& v->level == level
&& v->ximage_flag == ximageFlag
&& v->mesa_visual.rgbMode == rgbFlag
&& v->mesa_visual.doubleBufferMode == dbFlag
&& v->mesa_visual.stereoMode == stereoFlag
&& (v->mesa_visual.alphaBits > 0) == alphaFlag
&& (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
&& (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
&& (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
&& (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
&& (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
&& (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
/* now either compare XVisualInfo pointers or visual IDs */
if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
|| (comparePointers && v->vishandle == vinfo)) {
return v;
}
}
}
/* Create a new visual and add it to the list. */
if (NumVisuals>=MAX_VISUALS) {
fprintf( stderr, "GLX Error: maximum number of visuals exceeded\n");
return NULL;
}
xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
stereoFlag, ximageFlag,
depth_size, stencil_size,
accumRedSize, accumBlueSize,
accumBlueSize, accumAlphaSize, 0, level,
GLX_NONE_EXT );
if (xmvis) {
VisualTable[NumVisuals] = xmvis;
NumVisuals++;
}
return xmvis;
}
/*
* Create a GLX visual from a regular XVisualInfo.
* This is called when Fake GLX is given an XVisualInfo which wasn't
* returned by glXChooseVisual. Since this is the first time we're
* considering this visual we'll take a guess at reasonable values
* for depth buffer size, stencil size, accum size, etc.
* This is the best we can do with a client-side emulation of GLX.
*/
static XMesaVisual
create_glx_visual( Display *dpy, XVisualInfo *visinfo )
{
int vislevel;
vislevel = level_of_visual( dpy, visinfo );
if (vislevel) {
/* Configure this visual as a CI, single-buffered overlay */
return save_glx_visual( dpy, visinfo,
GL_FALSE, /* rgb */
GL_FALSE, /* alpha */
GL_FALSE, /* double */
GL_FALSE, /* stereo */
0, /* depth bits */
0, /* stencil bits */
0,0,0,0, /* accum bits */
vislevel /* level */
);
}
else if (is_usable_visual( visinfo )) {
if (getenv("MESA_GLX_FORCE_CI")) {
/* Configure this visual as a COLOR INDEX visual. */
return save_glx_visual( dpy, visinfo,
GL_FALSE, /* rgb */
GL_FALSE, /* alpha */
GL_TRUE, /* double */
GL_FALSE, /* stereo */
DEFAULT_SOFTWARE_DEPTH_BITS,
8 * sizeof(GLstencil),
0 * sizeof(GLaccum), /* r */
0 * sizeof(GLaccum), /* g */
0 * sizeof(GLaccum), /* b */
0 * sizeof(GLaccum), /* a */
0 /* level */
);
}
else {
/* Configure this visual as RGB, double-buffered, depth-buffered. */
/* This is surely wrong for some people's needs but what else */
/* can be done? They should use glXChooseVisual(). */
return save_glx_visual( dpy, visinfo,
GL_TRUE, /* rgb */
GL_FALSE, /* alpha */
GL_TRUE, /* double */
GL_FALSE, /* stereo */
DEFAULT_SOFTWARE_DEPTH_BITS,
8 * sizeof(GLstencil),
8 * sizeof(GLaccum), /* r */
8 * sizeof(GLaccum), /* g */
8 * sizeof(GLaccum), /* b */
8 * sizeof(GLaccum), /* a */
0 /* level */
);
}
}
else {
fprintf(stderr,"Mesa: error in glXCreateContext: bad visual\n");
return NULL;
}
}
/*
* Find the GLX visual associated with an XVisualInfo.
*/
static XMesaVisual
find_glx_visual( Display *dpy, XVisualInfo *vinfo )
{
int i;
/* First try to match pointers */
for (i=0;i<NumVisuals;i++) {
if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
return VisualTable[i];
}
}
/* try to match visual id */
for (i=0;i<NumVisuals;i++) {
if (VisualTable[i]->display==dpy
&& VisualTable[i]->visinfo->visualid == vinfo->visualid) {
return VisualTable[i];
}
}
return NULL;
}
/*
* Return the transparent pixel value for a GLX visual.
* Input: glxvis - the glx_visual
* Return: a pixel value or -1 if no transparent pixel
*/
static int transparent_pixel( XMesaVisual glxvis )
{
Display *dpy = glxvis->display;
XVisualInfo *vinfo = glxvis->visinfo;
Atom overlayVisualsAtom;
OverlayInfo *overlay_info = NULL;
int numOverlaysPerScreen;
Status status;
Atom actualType;
int actualFormat;
unsigned long sizeData, bytesLeft;
int i;
/*
* The SERVER_OVERLAY_VISUALS property on the root window contains
* a list of overlay visuals. Get that list now.
*/
overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
if (overlayVisualsAtom == None) {
return -1;
}
status = XGetWindowProperty(dpy, RootWindow( dpy, vinfo->screen ),
overlayVisualsAtom, 0L, (long) 10000, False,
overlayVisualsAtom, &actualType, &actualFormat,
&sizeData, &bytesLeft,
(unsigned char **) &overlay_info );
if (status != Success || actualType != overlayVisualsAtom ||
actualFormat != 32 || sizeData < 4) {
/* something went wrong */
XFree((void *) overlay_info);
return -1;
}
/* search the overlay visual list for the visual ID of interest */
numOverlaysPerScreen = (int) (sizeData / 4);
for (i=0;i<numOverlaysPerScreen;i++) {
OverlayInfo *ov;
ov = overlay_info + i;
if (ov->overlay_visual==vinfo->visualid) {
/* found it! */
if (ov->transparent_type==0) {
/* type 0 indicates no transparency */
XFree((void *) overlay_info);
return -1;
}
else {
/* ov->value is the transparent pixel */
XFree((void *) overlay_info);
return ov->value;
}
}
}
/* The visual ID was not found in the overlay list. */
XFree((void *) overlay_info);
return -1;
}
/*
* Try to get an X visual which matches the given arguments.
*/
static XVisualInfo *get_visual( Display *dpy, int scr,
unsigned int depth, int xclass )
{
XVisualInfo temp, *vis;
long mask;
int n;
unsigned int default_depth;
int default_class;
mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
temp.screen = scr;
temp.depth = depth;
temp.CLASS = xclass;
default_depth = DefaultDepth(dpy,scr);
default_class = DefaultVisual(dpy,scr)->CLASS;
if (depth==default_depth && xclass==default_class) {
/* try to get root window's visual */
temp.visualid = DefaultVisual(dpy,scr)->visualid;
mask |= VisualIDMask;
}
vis = XGetVisualInfo( dpy, mask, &temp, &n );
/* In case bits/pixel > 24, make sure color channels are still <=8 bits.
* An SGI Infinite Reality system, for example, can have 30bpp pixels:
* 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
*/
if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
_mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
_mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
return vis;
}
else {
XFree((void *) vis);
return NULL;
}
}
return vis;
}
/*
* Retrieve the value of the given environment variable and find
* the X visual which matches it.
* Input: dpy - the display
* screen - the screen number
* varname - the name of the environment variable
* Return: an XVisualInfo pointer to NULL if error.
*/
static XVisualInfo *get_env_visual(Display *dpy, int scr, const char *varname)
{
char value[100], type[100];
int depth, xclass = -1;
XVisualInfo *vis;
if (!getenv( varname )) {
return NULL;
}
strncpy( value, getenv(varname), 100 );
value[99] = 0;
sscanf( value, "%s %d", type, &depth );
if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
else if (strcmp(type,"StaticColor")==0) xclass = StaticColor;
else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
if (xclass>-1 && depth>0) {
vis = get_visual( dpy, scr, depth, xclass );
if (vis) {
return vis;
}
}
fprintf( stderr, "Mesa: GLX unable to find visual class=%s, depth=%d.\n",
type, depth );
return NULL;
}
/*
* Select an X visual which satisfies the RGBA/CI flag and minimum depth.
* Input: dpy, screen - X display and screen number
* rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode
* min_depth - minimum visual depth
* preferred_class - preferred GLX visual class or DONT_CARE
* Return: pointer to an XVisualInfo or NULL.
*/
static XVisualInfo *choose_x_visual( Display *dpy, int screen,
GLboolean rgba, int min_depth,
int preferred_class )
{
XVisualInfo *vis;
int xclass, visclass = 0;
int depth;
if (rgba) {
Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
/* First see if the MESA_RGB_VISUAL env var is defined */
vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
if (vis) {
return vis;
}
/* Otherwise, search for a suitable visual */
if (preferred_class==DONT_CARE) {
for (xclass=0;xclass<6;xclass++) {
switch (xclass) {
case 0: visclass = TrueColor; break;
case 1: visclass = DirectColor; break;
case 2: visclass = PseudoColor; break;
case 3: visclass = StaticColor; break;
case 4: visclass = GrayScale; break;
case 5: visclass = StaticGray; break;
}
if (min_depth==0) {
/* start with shallowest */
for (depth=0;depth<=32;depth++) {
if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
/* Special case: try to get 8-bit PseudoColor before */
/* 8-bit TrueColor */
vis = get_visual( dpy, screen, 8, PseudoColor );
if (vis) {
return vis;
}
}
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
}
else {
/* start with deepest */
for (depth=32;depth>=min_depth;depth--) {
if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
/* Special case: try to get 8-bit PseudoColor before */
/* 8-bit TrueColor */
vis = get_visual( dpy, screen, 8, PseudoColor );
if (vis) {
return vis;
}
}
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
}
}
}
else {
/* search for a specific visual class */
switch (preferred_class) {
case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
default: return NULL;
}
if (min_depth==0) {
/* start with shallowest */
for (depth=0;depth<=32;depth++) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
}
else {
/* start with deepest */
for (depth=32;depth>=min_depth;depth--) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
}
}
}
else {
/* First see if the MESA_CI_VISUAL env var is defined */
vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" );
if (vis) {
return vis;
}
/* Otherwise, search for a suitable visual, starting with shallowest */
if (preferred_class==DONT_CARE) {
for (xclass=0;xclass<4;xclass++) {
switch (xclass) {
case 0: visclass = PseudoColor; break;
case 1: visclass = StaticColor; break;
case 2: visclass = GrayScale; break;
case 3: visclass = StaticGray; break;
}
/* try 8-bit up through 16-bit */
for (depth=8;depth<=16;depth++) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
/* try min_depth up to 8-bit */
for (depth=min_depth;depth<8;depth++) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
}
}
else {
/* search for a specific visual class */
switch (preferred_class) {
case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
default: return NULL;
}
/* try 8-bit up through 16-bit */
for (depth=8;depth<=16;depth++) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
/* try min_depth up to 8-bit */
for (depth=min_depth;depth<8;depth++) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
}
}
/* didn't find a visual */
return NULL;
}
/*
* Find the deepest X over/underlay visual of at least min_depth.
* Input: dpy, screen - X display and screen number
* level - the over/underlay level
* trans_type - transparent pixel type: GLX_NONE_EXT,
* GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
* or DONT_CARE
* trans_value - transparent pixel value or DONT_CARE
* min_depth - minimum visual depth
* preferred_class - preferred GLX visual class or DONT_CARE
* Return: pointer to an XVisualInfo or NULL.
*/
static XVisualInfo *choose_x_overlay_visual( Display *dpy, int scr,
GLboolean rgbFlag,
int level, int trans_type,
int trans_value,
int min_depth,
int preferred_class )
{
Atom overlayVisualsAtom;
OverlayInfo *overlay_info;
int numOverlaysPerScreen;
Status status;
Atom actualType;
int actualFormat;
unsigned long sizeData, bytesLeft;
int i;
XVisualInfo *deepvis;
int deepest;
/*DEBUG int tt, tv; */
switch (preferred_class) {
case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
default: preferred_class = DONT_CARE;
}
/*
* The SERVER_OVERLAY_VISUALS property on the root window contains
* a list of overlay visuals. Get that list now.
*/
overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
if (overlayVisualsAtom == (Atom) None) {
return NULL;
}
status = XGetWindowProperty(dpy, RootWindow( dpy, scr ),
overlayVisualsAtom, 0L, (long) 10000, False,
overlayVisualsAtom, &actualType, &actualFormat,
&sizeData, &bytesLeft,
(unsigned char **) &overlay_info );
if (status != Success || actualType != overlayVisualsAtom ||
actualFormat != 32 || sizeData < 4) {
/* something went wrong */
return NULL;
}
/* Search for the deepest overlay which satisifies all criteria. */
deepest = min_depth;
deepvis = NULL;
numOverlaysPerScreen = (int) (sizeData / 4);
for (i=0;i<numOverlaysPerScreen;i++) {
XVisualInfo *vislist, vistemplate;
int count;
OverlayInfo *ov;
ov = overlay_info + i;
if (ov->layer!=level) {
/* failed overlay level criteria */
continue;
}
if (!(trans_type==DONT_CARE
|| (trans_type==GLX_TRANSPARENT_INDEX_EXT
&& ov->transparent_type>0)
|| (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
/* failed transparent pixel type criteria */
continue;
}
if (trans_value!=DONT_CARE && trans_value!=ov->value) {
/* failed transparent pixel value criteria */
continue;
}
/* get XVisualInfo and check the depth */
vistemplate.visualid = ov->overlay_visual;
vistemplate.screen = scr;
vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
&vistemplate, &count );
if (count!=1) {
/* something went wrong */
continue;
}
if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
/* wrong visual class */
continue;
}
/* if RGB was requested, make sure we have True/DirectColor */
if (rgbFlag && vislist->CLASS != TrueColor
&& vislist->CLASS != DirectColor)
continue;
/* if CI was requested, make sure we have a color indexed visual */
if (!rgbFlag
&& (vislist->CLASS == TrueColor || vislist->CLASS == DirectColor))
continue;
if (deepvis==NULL || vislist->depth > deepest) {
/* YES! found a satisfactory visual */
if (deepvis) {
XFree( deepvis );
}
deepest = vislist->depth;
deepvis = vislist;
/* DEBUG tt = ov->transparent_type;*/
/* DEBUG tv = ov->value; */
}
}
/*DEBUG
if (deepvis) {
printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
deepvis->visualid, level, deepvis->depth, tt, tv );
}
*/
return deepvis;
}
/**********************************************************************/
/*** Begin Fake GLX API Functions ***/
/**********************************************************************/
static XVisualInfo *
Fake_glXChooseVisual( Display *dpy, int screen, int *list )
{
int *parselist;
XVisualInfo *vis;
int min_ci = 0;
int min_red=0, min_green=0, min_blue=0;
GLboolean rgb_flag = GL_FALSE;
GLboolean alpha_flag = GL_FALSE;
GLboolean double_flag = GL_FALSE;
GLboolean stereo_flag = GL_FALSE;
GLint depth_size = 0;
GLint stencil_size = 0;
GLint accumRedSize = 0;
GLint accumGreenSize = 0;
GLint accumBlueSize = 0;
GLint accumAlphaSize = 0;
int level = 0;
int visual_type = DONT_CARE;
int trans_type = DONT_CARE;
int trans_value = DONT_CARE;
GLint caveat = DONT_CARE;
parselist = list;
while (*parselist) {
switch (*parselist) {
case GLX_USE_GL:
/* ignore */
parselist++;
break;
case GLX_BUFFER_SIZE:
parselist++;
min_ci = *parselist++;
break;
case GLX_LEVEL:
parselist++;
level = *parselist++;
break;
case GLX_RGBA:
rgb_flag = GL_TRUE;
parselist++;
break;
case GLX_DOUBLEBUFFER:
double_flag = GL_TRUE;
parselist++;
break;
case GLX_STEREO:
stereo_flag = GL_TRUE;
return NULL;
case GLX_AUX_BUFFERS:
/* ignore */
parselist++;
parselist++;
break;
case GLX_RED_SIZE:
parselist++;
min_red = *parselist++;
break;
case GLX_GREEN_SIZE:
parselist++;
min_green = *parselist++;
break;
case GLX_BLUE_SIZE:
parselist++;
min_blue = *parselist++;
break;
case GLX_ALPHA_SIZE:
parselist++;
{
GLint size = *parselist++;
alpha_flag = size>0 ? 1 : 0;
}
break;
case GLX_DEPTH_SIZE:
parselist++;
depth_size = *parselist++;
break;
case GLX_STENCIL_SIZE:
parselist++;
stencil_size = *parselist++;
break;
case GLX_ACCUM_RED_SIZE:
parselist++;
{
GLint size = *parselist++;
accumRedSize = MAX2( accumRedSize, size );
}
break;
case GLX_ACCUM_GREEN_SIZE:
parselist++;
{
GLint size = *parselist++;
accumGreenSize = MAX2( accumGreenSize, size );
}
break;
case GLX_ACCUM_BLUE_SIZE:
parselist++;
{
GLint size = *parselist++;
accumBlueSize = MAX2( accumBlueSize, size );
}
break;
case GLX_ACCUM_ALPHA_SIZE:
parselist++;
{
GLint size = *parselist++;
accumAlphaSize = MAX2( accumAlphaSize, size );
}
break;
/*
* GLX_EXT_visual_info extension
*/
case GLX_X_VISUAL_TYPE_EXT:
parselist++;
visual_type = *parselist++;
break;
case GLX_TRANSPARENT_TYPE_EXT:
parselist++;
trans_type = *parselist++;
break;
case GLX_TRANSPARENT_INDEX_VALUE_EXT:
parselist++;
trans_value = *parselist++;
break;
case GLX_TRANSPARENT_RED_VALUE_EXT:
case GLX_TRANSPARENT_GREEN_VALUE_EXT:
case GLX_TRANSPARENT_BLUE_VALUE_EXT:
case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
/* ignore */
parselist++;
parselist++;
break;
/*
* GLX_EXT_visual_info extension
*/
case GLX_VISUAL_CAVEAT_EXT:
parselist++;
caveat = *parselist++; /* ignored for now */
break;
case None:
break;
default:
/* undefined attribute */
return NULL;
}
}
/*
* Since we're only simulating the GLX extension this function will never
* find any real GL visuals. Instead, all we can do is try to find an RGB
* or CI visual of appropriate depth. Other requested attributes such as
* double buffering, depth buffer, etc. will be associated with the X
* visual and stored in the VisualTable[].
*/
if (level==0) {
/* normal color planes */
if (rgb_flag) {
/* Get an RGB visual */
int min_rgb = min_red + min_green + min_blue;
if (min_rgb>1 && min_rgb<8) {
/* a special case to be sure we can get a monochrome visual */
min_rgb = 1;
}
vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type );
}
else {
/* Get a color index visual */
vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type );
accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0;
}
}
else {
/* over/underlay planes */
if (rgb_flag) {
/* rgba overlay */
int min_rgb = min_red + min_green + min_blue;
if (min_rgb>1 && min_rgb<8) {
/* a special case to be sure we can get a monochrome visual */
min_rgb = 1;
}
vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
trans_type, trans_value, min_rgb, visual_type );
}
else {
/* color index overlay */
vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
trans_type, trans_value, min_ci, visual_type );
}
}
if (vis) {
/* Note: we're not exactly obeying the glXChooseVisual rules here.
* When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
* largest depth buffer size, which is 32bits/value. Instead, we
* return 16 to maintain performance with earlier versions of Mesa.
*/
if (depth_size > 24)
depth_size = 31; /* 32 causes int overflow problems */
else if (depth_size > 16)
depth_size = 24;
else if (depth_size > 0)
depth_size = DEFAULT_SOFTWARE_DEPTH_BITS; /*16*/
/* we only support one size of stencil and accum buffers. */
if (stencil_size > 0)
stencil_size = STENCIL_BITS;
if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
accumAlphaSize > 0) {
accumRedSize = ACCUM_BITS;
accumGreenSize = ACCUM_BITS;
accumBlueSize = ACCUM_BITS;
accumAlphaSize = alpha_flag ? ACCUM_BITS : 0;
}
if (!save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
stereo_flag, depth_size, stencil_size,
accumRedSize, accumGreenSize,
accumBlueSize, accumAlphaSize,
level ))
return NULL;
}
return vis;
}
static GLXContext
Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
GLXContext share_list, Bool direct )
{
XMesaVisual glxvis;
struct fake_glx_context *glxCtx;
struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
glxCtx = CALLOC_STRUCT(fake_glx_context);
if (!glxCtx)
return 0;
/* deallocate unused windows/buffers */
XMesaGarbageCollect();
glxvis = find_glx_visual( dpy, visinfo );
if (!glxvis) {
/* This visual wasn't found with glXChooseVisual() */
glxvis = create_glx_visual( dpy, visinfo );
if (!glxvis) {
/* unusable visual */
FREE(glxCtx);
return NULL;
}
}
glxCtx->xmesaContext = XMesaCreateContext(glxvis,
shareCtx ? shareCtx->xmesaContext : NULL);
if (!glxCtx->xmesaContext) {
FREE(glxCtx);
return NULL;
}
glxCtx->xmesaContext->direct = GL_FALSE;
glxCtx->glxContext.isDirect = GL_FALSE;
glxCtx->glxContext.currentDpy = dpy;
glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
return (GLXContext) glxCtx;
}
/* XXX these may have to be removed due to thread-safety issues. */
static GLXContext MakeCurrent_PrevContext = 0;
static GLXDrawable MakeCurrent_PrevDrawable = 0;
static GLXDrawable MakeCurrent_PrevReadable = 0;
static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
/* GLX 1.3 and later */
static Bool
Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
GLXDrawable read, GLXContext ctx )
{
struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
if (ctx && draw && read) {
XMesaBuffer drawBuffer, readBuffer;
XMesaContext xmctx = glxCtx->xmesaContext;
/* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
if (ctx == MakeCurrent_PrevContext
&& draw == MakeCurrent_PrevDrawable) {
drawBuffer = MakeCurrent_PrevDrawBuffer;
}
else {
drawBuffer = XMesaFindBuffer( dpy, draw );
}
if (!drawBuffer) {
/* drawable must be a new window! */
drawBuffer = XMesaCreateWindowBuffer2( xmctx->xm_visual, draw, xmctx);
if (!drawBuffer) {
/* Out of memory, or context/drawable depth mismatch */
return False;
}
}
/* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
if (ctx == MakeCurrent_PrevContext
&& read == MakeCurrent_PrevReadable) {
readBuffer = MakeCurrent_PrevReadBuffer;
}
else {
readBuffer = XMesaFindBuffer( dpy, read );
}
if (!readBuffer) {
/* drawable must be a new window! */
readBuffer = XMesaCreateWindowBuffer2(glxCtx->xmesaContext->xm_visual,
read, xmctx);
if (!readBuffer) {
/* Out of memory, or context/drawable depth mismatch */
return False;
}
}
MakeCurrent_PrevContext = ctx;
MakeCurrent_PrevDrawable = draw;
MakeCurrent_PrevReadable = read;
MakeCurrent_PrevDrawBuffer = drawBuffer;
MakeCurrent_PrevReadBuffer = readBuffer;
/* Now make current! */
if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
((__GLXcontext *) ctx)->currentDpy = dpy;
((__GLXcontext *) ctx)->currentDrawable = draw;
((__GLXcontext *) ctx)->currentReadable = read;
#ifdef GLX_BUILT_IN_XMESA
printf("Set fake context ctx %p\n", ctx);
__glXSetCurrentContext(ctx);
#endif
return True;
}
else {
return False;
}
}
else if (!ctx && !draw && !read) {
/* release current context w/out assigning new one. */
XMesaMakeCurrent( NULL, NULL );
MakeCurrent_PrevContext = 0;
MakeCurrent_PrevDrawable = 0;
MakeCurrent_PrevReadable = 0;
MakeCurrent_PrevDrawBuffer = 0;
MakeCurrent_PrevReadBuffer = 0;
#ifdef GLX_BUILT_IN_XMESA
/* XXX bind dummy context with __glXSetCurrentContext(ctx); */
#endif
return True;
}
else {
/* The args must either all be non-zero or all zero.
* This is an error.
*/
return False;
}
}
static Bool
Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
{
return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
}
static GLXPixmap
Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
{
XMesaVisual v;
XMesaBuffer b;
v = find_glx_visual( dpy, visinfo );
if (!v) {
v = create_glx_visual( dpy, visinfo );
if (!v) {
/* unusable visual */
return 0;
}
}
b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
if (!b) {
return 0;
}
return b->frontbuffer;
}
/*** GLX_MESA_pixmap_colormap ***/
static GLXPixmap
Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
Pixmap pixmap, Colormap cmap )
{
XMesaVisual v;
XMesaBuffer b;
v = find_glx_visual( dpy, visinfo );
if (!v) {
v = create_glx_visual( dpy, visinfo );
if (!v) {
/* unusable visual */
return 0;
}
}
b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
if (!b) {
return 0;
}
return b->frontbuffer;
}
static void
Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
{
XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
if (b) {
XMesaDestroyBuffer(b);
}
else if (getenv("MESA_DEBUG")) {
fprintf( stderr, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
}
}
static void
Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
unsigned long mask )
{
XMesaContext xm_src = (XMesaContext) src;
XMesaContext xm_dst = (XMesaContext) dst;
(void) dpy;
_mesa_copy_context( xm_src->gl_ctx, xm_dst->gl_ctx, (GLuint) mask );
}
static Bool
Fake_glXQueryExtension( Display *dpy, int *errorb, int *event )
{
/* Mesa's GLX isn't really an X extension but we try to act like one. */
(void) dpy;
(void) errorb;
(void) event;
return True;
}
extern void _kw_ungrab_all( Display *dpy );
void _kw_ungrab_all( Display *dpy )
{
XUngrabPointer( dpy, CurrentTime );
XUngrabKeyboard( dpy, CurrentTime );
}
static void
Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
{
struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
(void) dpy;
MakeCurrent_PrevContext = 0;
MakeCurrent_PrevDrawable = 0;
MakeCurrent_PrevReadable = 0;
MakeCurrent_PrevDrawBuffer = 0;
MakeCurrent_PrevReadBuffer = 0;
XMesaDestroyContext( glxCtx->xmesaContext );
XMesaGarbageCollect();
}
static Bool
Fake_glXIsDirect( Display *dpy, GLXContext ctx )
{
struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
(void) dpy;
return glxCtx->xmesaContext->direct;
}
static void
Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
{
XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
if (buffer) {
XMesaSwapBuffers(buffer);
}
else if (getenv("MESA_DEBUG")) {
fprintf(stderr, "Mesa Warning: glXSwapBuffers: invalid drawable\n");
}
}
/*** GLX_MESA_copy_sub_buffer ***/
static void
Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
int x, int y, int width, int height )
{
XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
if (buffer) {
XMesaCopySubBuffer(buffer, x, y, width, height);
}
else if (getenv("MESA_DEBUG")) {
fprintf(stderr, "Mesa Warning: glXCopySubBufferMESA: invalid drawable\n");
}
}
static Bool
Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
{
(void) dpy;
/* Return GLX version, not Mesa version */
assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
*maj = CLIENT_MAJOR_VERSION;
*min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
return True;
}
/*
* Query the GLX attributes of the given XVisualInfo.
*/
static int
Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
int attrib, int *value )
{
XMesaVisual glxvis;
glxvis = find_glx_visual( dpy, visinfo );
if (!glxvis) {
/* this visual wasn't obtained with glXChooseVisual */
glxvis = create_glx_visual( dpy, visinfo );
if (!glxvis) {
/* this visual can't be used for GL rendering */
if (attrib==GLX_USE_GL) {
*value = (int) False;
return 0;
}
else {
/*fprintf( stderr, "Mesa: Error in glXGetConfig: bad visual\n");*/
return GLX_BAD_VISUAL;
}
}
}
switch(attrib) {
case GLX_USE_GL:
*value = (int) True;
return 0;
case GLX_BUFFER_SIZE:
*value = visinfo->depth;
return 0;
case GLX_LEVEL:
*value = glxvis->level;
return 0;
case GLX_RGBA:
if (glxvis->mesa_visual.rgbMode) {
*value = True;
}
else {
*value = False;
}
return 0;
case GLX_DOUBLEBUFFER:
*value = (int) glxvis->mesa_visual.doubleBufferMode;
return 0;
case GLX_STEREO:
*value = (int) glxvis->mesa_visual.stereoMode;
return 0;
case GLX_AUX_BUFFERS:
*value = (int) False;
return 0;
case GLX_RED_SIZE:
*value = glxvis->mesa_visual.redBits;
return 0;
case GLX_GREEN_SIZE:
*value = glxvis->mesa_visual.greenBits;
return 0;
case GLX_BLUE_SIZE:
*value = glxvis->mesa_visual.blueBits;
return 0;
case GLX_ALPHA_SIZE:
*value = glxvis->mesa_visual.alphaBits;
return 0;
case GLX_DEPTH_SIZE:
*value = glxvis->mesa_visual.depthBits;
return 0;
case GLX_STENCIL_SIZE:
*value = glxvis->mesa_visual.stencilBits;
return 0;
case GLX_ACCUM_RED_SIZE:
*value = glxvis->mesa_visual.accumRedBits;
return 0;
case GLX_ACCUM_GREEN_SIZE:
*value = glxvis->mesa_visual.accumGreenBits;
return 0;
case GLX_ACCUM_BLUE_SIZE:
*value = glxvis->mesa_visual.accumBlueBits;
return 0;
case GLX_ACCUM_ALPHA_SIZE:
*value = glxvis->mesa_visual.accumAlphaBits;
return 0;
/*
* GLX_EXT_visual_info extension
*/
case GLX_X_VISUAL_TYPE_EXT:
switch (glxvis->visinfo->CLASS) {
case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
}
return 0;
case GLX_TRANSPARENT_TYPE_EXT:
if (glxvis->level==0) {
/* normal planes */
*value = GLX_NONE_EXT;
}
else if (glxvis->level>0) {
/* overlay */
if (glxvis->mesa_visual.rgbMode) {
*value = GLX_TRANSPARENT_RGB_EXT;
}
else {
*value = GLX_TRANSPARENT_INDEX_EXT;
}
}
else if (glxvis->level<0) {
/* underlay */
*value = GLX_NONE_EXT;
}
return 0;
case GLX_TRANSPARENT_INDEX_VALUE_EXT:
{
int pixel = transparent_pixel( glxvis );
if (pixel>=0) {
*value = pixel;
}
/* else undefined */
}
return 0;
case GLX_TRANSPARENT_RED_VALUE_EXT:
/* undefined */
return 0;
case GLX_TRANSPARENT_GREEN_VALUE_EXT:
/* undefined */
return 0;
case GLX_TRANSPARENT_BLUE_VALUE_EXT:
/* undefined */
return 0;
case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
/* undefined */
return 0;
/*
* GLX_EXT_visual_info extension
*/
case GLX_VISUAL_CAVEAT_EXT:
/* test for zero, just in case */
if (glxvis->VisualCaveat > 0)
*value = glxvis->VisualCaveat;
else
*value = GLX_NONE_EXT;
return 0;
/*
* Extensions
*/
default:
return GLX_BAD_ATTRIBUTE;
}
}
static void
Fake_glXWaitGL( void )
{
XMesaContext xmesa = XMesaGetCurrentContext();
XMesaFlush( xmesa );
}
static void
Fake_glXWaitX( void )
{
XMesaContext xmesa = XMesaGetCurrentContext();
XMesaFlush( xmesa );
}
/*
* Return the extensions string, which is 3Dfx-dependant.
*/
static const char *get_extensions( void )
{
#ifdef FX
const char *fx = getenv("MESA_GLX_FX");
if (fx && fx[0] != 'd') {
return "GLX_MESA_pixmap_colormap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_MESA_release_buffers GLX_MESA_copy_sub_buffer GLX_SGI_video_sync GLX_MESA_set_3dfx_mode GLX_ARB_get_proc_address";
}
#endif
return "GLX_MESA_pixmap_colormap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_MESA_release_buffers GLX_MESA_copy_sub_buffer GLX_SGI_video_sync GLX_ARB_get_proc_address";
}
/* GLX 1.1 and later */
static const char *
Fake_glXQueryExtensionsString( Display *dpy, int screen )
{
(void) dpy;
(void) screen;
return get_extensions();
}
/* GLX 1.1 and later */
static const char *
Fake_glXQueryServerString( Display *dpy, int screen, int name )
{
static char version[1000];
sprintf(version, "%d.%d %s", SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION,
MESA_GLX_VERSION);
(void) dpy;
(void) screen;
switch (name) {
case GLX_EXTENSIONS:
return get_extensions();
case GLX_VENDOR:
return VENDOR;
case GLX_VERSION:
return version;
default:
return NULL;
}
}
/* GLX 1.1 and later */
static const char *
Fake_glXGetClientString( Display *dpy, int name )
{
static char version[1000];
sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION, CLIENT_MINOR_VERSION,
MESA_GLX_VERSION);
(void) dpy;
switch (name) {
case GLX_EXTENSIONS:
return get_extensions();
case GLX_VENDOR:
return VENDOR;
case GLX_VERSION:
return version;
default:
return NULL;
}
}
/*
* GLX 1.3 and later
*/
/* XXX Move this when done.
* Create an XMesaBuffer as a Pbuffer.
* New in Mesa 4.0 but untested.
*/
extern XMesaBuffer XMesaCreatePBuffer( XMesaVisual v, XMesaColormap cmap,
unsigned int width, unsigned int height );
static GLXFBConfig *
Fake_glXChooseFBConfig( Display *dpy, int screen,
const int *attribList, int *nitems )
{
(void) dpy;
(void) screen;
(void) attribList;
(void) nitems;
return 0;
}
static int
Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
int attribute, int *value )
{
XMesaVisual v = NULL; /* XXX Fix this */
(void) dpy;
(void) config;
(void) attribute;
(void) value;
if (!dpy || !config || !value)
return -1;
switch (attribute) {
case GLX_FBCONFIG_ID:
case GLX_BUFFER_SIZE:
if (v->mesa_visual.rgbMode)
*value = v->mesa_visual.redBits + v->mesa_visual.greenBits +
v->mesa_visual.blueBits + v->mesa_visual.alphaBits;
else
*value = v->mesa_visual.indexBits;
break;
case GLX_LEVEL:
*value = v->level;
break;
case GLX_DOUBLEBUFFER:
*value = v->mesa_visual.doubleBufferMode;
break;
case GLX_STEREO:
*value = v->mesa_visual.stereoMode;
break;
case GLX_AUX_BUFFERS:
*value = v->mesa_visual.numAuxBuffers;
break;
case GLX_RED_SIZE:
*value = v->mesa_visual.redBits;
break;
case GLX_GREEN_SIZE:
*value = v->mesa_visual.greenBits;
break;
case GLX_BLUE_SIZE:
*value = v->mesa_visual.blueBits;
break;
case GLX_ALPHA_SIZE:
*value = v->mesa_visual.alphaBits;
break;
case GLX_DEPTH_SIZE:
*value = v->mesa_visual.depthBits;
break;
case GLX_STENCIL_SIZE:
*value = v->mesa_visual.stencilBits;
break;
case GLX_ACCUM_RED_SIZE:
*value = v->mesa_visual.accumRedBits;
break;
case GLX_ACCUM_GREEN_SIZE:
*value = v->mesa_visual.accumGreenBits;
break;
case GLX_ACCUM_BLUE_SIZE:
*value = v->mesa_visual.accumBlueBits;
break;
case GLX_ACCUM_ALPHA_SIZE:
*value = v->mesa_visual.accumAlphaBits;
break;
case GLX_RENDER_TYPE:
*value = 0; /* XXX ??? */
break;
case GLX_DRAWABLE_TYPE:
*value = GLX_PBUFFER_BIT; /* XXX fix? */
break;
case GLX_X_RENDERABLE:
*value = False; /* XXX ??? */
break;
case GLX_X_VISUAL_TYPE:
switch (v->vishandle->class) {
case GrayScale:
*value = GLX_GRAY_SCALE;
break;
case StaticGray:
*value = GLX_STATIC_GRAY;
break;
case StaticColor:
*value = GLX_STATIC_COLOR;
break;
case PseudoColor:
*value = GLX_PSEUDO_COLOR;
break;
case TrueColor:
*value = GLX_TRUE_COLOR;
break;
case DirectColor:
*value = GLX_DIRECT_COLOR;
break;
default:
*value = 0;
}
break;
case GLX_CONFIG_CAVEAT:
*value = 0; /* XXX ??? */
break;
case GLX_TRANSPARENT_TYPE:
if (v->level == 0) {
/* normal planes */
*value = GLX_NONE_EXT;
}
else if (v->level > 0) {
/* overlay */
if (v->mesa_visual.rgbMode) {
*value = GLX_TRANSPARENT_RGB_EXT;
}
else {
*value = GLX_TRANSPARENT_INDEX_EXT;
}
}
else if (v->level < 0) {
/* underlay */
*value = GLX_NONE_EXT;
}
break;
case GLX_TRANSPARENT_INDEX_VALUE:
*value = transparent_pixel( v );
break;
case GLX_TRANSPARENT_RED_VALUE:
*value = 0; /* not implemented */
break;
case GLX_TRANSPARENT_GREEN_VALUE:
*value = 0; /* not implemented */
break;
case GLX_TRANSPARENT_BLUE_VALUE:
*value = 0; /* not implemented */
break;
case GLX_TRANSPARENT_ALPHA_VALUE:
*value = 0; /* not implemented */
break;
case GLX_MAX_PBUFFER_WIDTH:
*value = DisplayWidth(dpy, v->vishandle->screen);
break;
case GLX_MAX_PBUFFER_HEIGHT:
*value = DisplayHeight(dpy, v->vishandle->screen);
break;
case GLX_MAX_PBUFFER_PIXELS:
*value = DisplayWidth(dpy, v->vishandle->screen) *
DisplayHeight(dpy, v->vishandle->screen);
break;
case GLX_VISUAL_ID:
*value = v->vishandle->visualid;
break;
default:
return GLX_BAD_ATTRIBUTE;
}
return Success;
}
static GLXFBConfig *
Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
{
(void) dpy;
(void) screen;
(void) nelements;
return 0;
}
static XVisualInfo *
Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
{
if (dpy && config) {
XMesaVisual v = (XMesaVisual) config;
return v->vishandle;
}
else {
return NULL;
}
}
static GLXWindow
Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
const int *attribList )
{
(void) dpy;
(void) config;
(void) win;
(void) attribList; /* Ignored in GLX 1.3 */
return win; /* A hack for now */
}
static void
Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
{
XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
if (b)
XMesaDestroyBuffer(b);
/* don't destroy X window */
}
/* XXX untested */
static GLXPixmap
Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
const int *attribList )
{
XMesaVisual v = (XMesaVisual) config;
XVisualInfo *visinfo;
XMesaBuffer b;
(void) dpy;
(void) config;
(void) pixmap;
(void) attribList; /* Ignored in GLX 1.3 */
if (!dpy || !config || !pixmap)
return 0;
visinfo = v->vishandle;
v = find_glx_visual( dpy, visinfo );
if (!v) {
v = create_glx_visual( dpy, visinfo );
if (!v) {
/* unusable visual */
return 0;
}
}
b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
if (!b) {
return 0;
}
return pixmap;
}
static void
Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
{
XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
if (b)
XMesaDestroyBuffer(b);
/* don't destroy X pixmap */
}
static GLXPbuffer
Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
const int *attribList )
{
const int *attrib;
int width = 0, height = 0;
GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
(void) dpy;
(void) config;
for (attrib = attribList; attrib; attrib++) {
switch (*attrib) {
case GLX_PBUFFER_WIDTH:
width = *(++attrib);
break;
case GLX_PBUFFER_HEIGHT:
height = *(++attrib);
break;
case GLX_PRESERVED_CONTENTS:
preserveContents = GL_TRUE; /* ignored */
break;
case GLX_LARGEST_PBUFFER:
useLargest = GL_TRUE; /* ignored */
break;
default:
return 0;
}
}
if (width == 0 || height == 0)
return 0;
return 0;
}
static void
Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
{
(void) dpy;
(void) pbuf;
}
static void
Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
unsigned int *value )
{
(void) dpy;
(void) draw;
switch (attribute) {
case GLX_WIDTH:
case GLX_HEIGHT:
case GLX_PRESERVED_CONTENTS:
case GLX_LARGEST_PBUFFER:
case GLX_FBCONFIG_ID:
*value = 0;
return;
default:
return; /* GLX_BAD_ATTRIBUTE? */
}
}
static GLXContext
Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
int renderType, GLXContext shareList, Bool direct )
{
XMesaVisual v = (XMesaVisual) config;
if (!dpy || !config ||
(renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
return 0;
return Fake_glXCreateContext(dpy, v->vishandle, shareList, direct);
}
static int
Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
{
(void) dpy;
(void) ctx;
switch (attribute) {
case GLX_FBCONFIG_ID:
case GLX_RENDER_TYPE:
case GLX_SCREEN:
*value = 0;
return Success;
default:
return GLX_BAD_ATTRIBUTE;
}
}
static void
Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
{
(void) dpy;
(void) drawable;
(void) mask;
}
static void
Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
unsigned long *mask )
{
(void) dpy;
(void) drawable;
(void) mask;
}
/*** GLX_SGI_swap_control ***/
static int
Fake_glXSwapIntervalSGI(int interval)
{
(void) interval;
return 0;
}
/*** GLX_SGI_video_sync ***/
static int
Fake_glXGetVideoSyncSGI(unsigned int *count)
{
(void) count;
return 0;
}
static int
Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
{
(void) divisor;
(void) remainder;
(void) count;
return 0;
}
/*** GLX_SGI_make_current_read ***/
static Bool
Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
{
(void) dpy;
(void) draw;
(void) read;
(void) ctx;
return False;
}
/* not used
static GLXDrawable
Fake_glXGetCurrentReadDrawableSGI(void)
{
return 0;
}
*/
/*** GLX_SGIX_video_source ***/
#if defined(_VL_H)
static GLXVideoSourceSGIX
Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
{
(void) dpy;
(void) screen;
(void) server;
(void) path;
(void) nodeClass;
(void) drainNode;
return 0;
}
static void
Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
{
(void) dpy;
(void) src;
}
#endif
/*** GLX_EXT_import_context ***/
static void
Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
{
(void) dpy;
(void) context;
}
static GLXContextID
Fake_glXGetContextIDEXT(const GLXContext context)
{
(void) context;
return 0;
}
static GLXContext
Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
{
(void) dpy;
(void) contextID;
return 0;
}
static int
Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
{
(void) dpy;
(void) context;
(void) attribute;
(void) value;
return 0;
}
/*** GLX_SGIX_fbconfig ***/
static int
Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
{
(void) dpy;
(void) config;
(void) attribute;
(void) value;
return 0;
}
static GLXFBConfigSGIX *
Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
{
(void) dpy;
(void) screen;
(void) attrib_list;
(void) nelements;
return 0;
}
static GLXPixmap
Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
{
(void) dpy;
(void) config;
(void) pixmap;
return 0;
}
static GLXContext
Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
{
(void) dpy;
(void) config;
(void) render_type;
(void) share_list;
(void) direct;
return 0;
}
static XVisualInfo *
Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
{
(void) dpy;
(void) config;
return NULL;
}
static GLXFBConfigSGIX
Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
{
(void) dpy;
(void) vis;
return 0;
}
/*** GLX_SGIX_pbuffer ***/
static GLXPbufferSGIX
Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config, unsigned int width, unsigned int height, int *attrib_list)
{
(void) dpy;
(void) config;
(void) width;
(void) height;
(void) attrib_list;
return 0;
}
static void
Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
{
(void) dpy;
(void) pbuf;
}
static int
Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
{
(void) dpy;
(void) pbuf;
(void) attribute;
(void) value;
return 0;
}
static void
Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
{
(void) dpy;
(void) drawable;
(void) mask;
}
static void
Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
{
(void) dpy;
(void) drawable;
(void) mask;
}
/*** GLX_SGI_cushion ***/
static void
Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
{
(void) dpy;
(void) win;
(void) cushion;
}
/*** GLX_SGIX_video_resize ***/
static int
Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
{
(void) dpy;
(void) screen;
(void) channel;
(void) window;
return 0;
}
static int
Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
{
(void) dpy;
(void) screen;
(void) channel;
(void) x;
(void) y;
(void) w;
(void) h;
return 0;
}
static int
Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
{
(void) dpy;
(void) screen;
(void) channel;
(void) x;
(void) y;
(void) w;
(void) h;
return 0;
}
static int
Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
{
(void) dpy;
(void) screen;
(void) channel;
(void) dx;
(void) dy;
(void) dw;
(void) dh;
return 0;
}
static int
Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
{
(void) dpy;
(void) screen;
(void) channel;
(void) synctype;
return 0;
}
/*** GLX_SGIX_dmbuffer **/
#if defined(_DM_BUFFER_H_)
static Bool
Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
{
(void) dpy;
(void) pbuffer;
(void) params;
(void) dmbuffer;
return False;
}
#endif
/*** GLX_SGIX_swap_group ***/
static void
Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
{
(void) dpy;
(void) drawable;
(void) member;
}
/*** GLX_SGIX_swap_barrier ***/
static void
Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
{
(void) dpy;
(void) drawable;
(void) barrier;
}
static Bool
Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
{
(void) dpy;
(void) screen;
(void) max;
return False;
}
/*** GLX_SUN_get_transparent_index ***/
static Status
Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
{
(void) dpy;
(void) overlay;
(void) underlay;
(void) pTransparent;
return 0;
}
/*** GLX_MESA_release_buffers ***/
/*
* Release the depth, stencil, accum buffers attached to a GLXDrawable
* (a window or pixmap) prior to destroying the GLXDrawable.
*/
static Bool
Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
{
XMesaBuffer b = XMesaFindBuffer(dpy, d);
if (b) {
XMesaDestroyBuffer(b);
return True;
}
return False;
}
/*** GLX_MESA_set_3dfx_mode ***/
static Bool
Fake_glXSet3DfxModeMESA( int mode )
{
return XMesaSetFXmode( mode );
}
extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
struct _glxapi_table *_mesa_GetGLXDispatchTable(void)
{
static struct _glxapi_table glx;
/* be sure our dispatch table size <= libGL's table */
{
GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
(void) size;
assert(_glxapi_get_dispatch_table_size() >= size);
}
/* initialize the whole table to no-ops */
_glxapi_set_no_op_table(&glx);
/* now initialize the table with the functions I implement */
glx.ChooseVisual = Fake_glXChooseVisual;
glx.CopyContext = Fake_glXCopyContext;
glx.CreateContext = Fake_glXCreateContext;
glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
glx.DestroyContext = Fake_glXDestroyContext;
glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
glx.GetConfig = Fake_glXGetConfig;
/*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
/*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
glx.IsDirect = Fake_glXIsDirect;
glx.MakeCurrent = Fake_glXMakeCurrent;
glx.QueryExtension = Fake_glXQueryExtension;
glx.QueryVersion = Fake_glXQueryVersion;
glx.SwapBuffers = Fake_glXSwapBuffers;
glx.UseXFont = Fake_glXUseXFont;
glx.WaitGL = Fake_glXWaitGL;
glx.WaitX = Fake_glXWaitX;
/*** GLX_VERSION_1_1 ***/
glx.GetClientString = Fake_glXGetClientString;
glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
glx.QueryServerString = Fake_glXQueryServerString;
/*** GLX_VERSION_1_2 ***/
/*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
/*** GLX_VERSION_1_3 ***/
glx.ChooseFBConfig = Fake_glXChooseFBConfig;
glx.CreateNewContext = Fake_glXCreateNewContext;
glx.CreatePbuffer = Fake_glXCreatePbuffer;
glx.CreatePixmap = Fake_glXCreatePixmap;
glx.CreateWindow = Fake_glXCreateWindow;
glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
glx.DestroyPixmap = Fake_glXDestroyPixmap;
glx.DestroyWindow = Fake_glXDestroyWindow;
/*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
glx.GetFBConfigs = Fake_glXGetFBConfigs;
glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
glx.QueryContext = Fake_glXQueryContext;
glx.QueryDrawable = Fake_glXQueryDrawable;
glx.SelectEvent = Fake_glXSelectEvent;
/*** GLX_SGI_swap_control ***/
glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
/*** GLX_SGI_video_sync ***/
glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
/*** GLX_SGI_make_current_read ***/
glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
/*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
/*** GLX_SGIX_video_source ***/
#if defined(_VL_H)
glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
#endif
/*** GLX_EXT_import_context ***/
glx.FreeContextEXT = Fake_glXFreeContextEXT;
glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
/*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
glx.ImportContextEXT = Fake_glXImportContextEXT;
glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
/*** GLX_SGIX_fbconfig ***/
glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
/*** GLX_SGIX_pbuffer ***/
glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
/*** GLX_SGI_cushion ***/
glx.CushionSGI = Fake_glXCushionSGI;
/*** GLX_SGIX_video_resize ***/
glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
/*** GLX_SGIX_dmbuffer **/
#if defined(_DM_BUFFER_H_)
glx.AssociateDMPbufferSGIX = NULL;
#endif
/*** GLX_SGIX_swap_group ***/
glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
/*** GLX_SGIX_swap_barrier ***/
glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
/*** GLX_SUN_get_transparent_index ***/
glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
/*** GLX_MESA_copy_sub_buffer ***/
glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
/*** GLX_MESA_release_buffers ***/
glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
/*** GLX_MESA_pixmap_colormap ***/
glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
/*** GLX_MESA_set_3dfx_mode ***/
glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
return &glx;
}