frederik
/
xserver
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
xserver/hw/kdrive/ephyr/ephyrhostglx.c

351 lines
10 KiB
C
Raw Blame History

/*
* Xephyr - A kdrive X server thats runs in a host X window.
* Authored by Matthew Allum <mallum@openedhand.com>
*
* Copyright © 2007 OpenedHand Ltd
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of OpenedHand Ltd not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. OpenedHand Ltd makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* OpenedHand Ltd DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL OpenedHand Ltd BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* a lots of the content of this file has been adapted from the mesa source
* code.
* Authors:
* Dodji Seketeli <dodji@openedhand.com>
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include <X11/Xlibint.h>
#include <GL/glx.h>
#include <GL/internal/glcore.h>
#include <GL/glxproto.h>
#include <GL/glxint.h>
#include "hostx.h"
#include "ephyrhostglx.h"
#define _HAVE_XALLOC_DECLS
#include "ephyrlog.h"
#ifdef XEPHYR_DRI
Bool
ephyrHostGLXGetMajorOpcode (int *a_opcode)
{
Bool is_ok=FALSE ;
Display *dpy=hostx_get_display () ;
static int opcode ;
int first_event_return=0, first_error_return=0;
EPHYR_RETURN_VAL_IF_FAIL (dpy, FALSE) ;
EPHYR_LOG ("enter\n") ;
if (!opcode) {
if (!XQueryExtension (dpy, GLX_EXTENSION_NAME, &opcode,
&first_event_return, &first_error_return)) {
EPHYR_LOG_ERROR ("XQueryExtension() failed\n") ;
goto out ;
}
}
*a_opcode = opcode ;
is_ok = TRUE ;
out:
EPHYR_LOG ("release\n") ;
return is_ok ;
}
Bool
ephyrHostGLXQueryVersion (int *a_major, int *a_minor)
{
Bool is_ok = FALSE ;
Display *dpy = hostx_get_display () ;
EPHYR_RETURN_VAL_IF_FAIL (a_major && a_minor, FALSE) ;
EPHYR_LOG ("enter\n") ;
if (!glXQueryVersion (dpy, a_major, a_minor)) {
EPHYR_LOG_ERROR ("glxQueryVersion() failed\n") ;
goto out ;
}
is_ok = TRUE ;
out:
EPHYR_LOG ("leave\n") ;
return is_ok ;
}
/**
* GLX protocol structure for the ficticious "GXLGenericGetString" request.
*
* This is a non-existant protocol packet. It just so happens that all of
* the real protocol packets used to request a string from the server have
* an identical binary layout. The only difference between them is the
* meaning of the \c for_whom field and the value of the \c glxCode.
*/
typedef struct GLXGenericGetString {
CARD8 reqType;
CARD8 glxCode;
CARD16 length B16;
CARD32 for_whom B32;
CARD32 name B32;
} xGLXGenericGetStringReq;
/* These defines are only needed to make the GetReq macro happy.
*/
#define sz_xGLXGenericGetStringReq 12
#define X_GLXGenericGetString 0
Bool
ephyrHostGLXGetStringFromServer (int a_screen_number,
int a_string_name,
char **a_string)
{
Display *dpy = hostx_get_display () ;
xGLXGenericGetStringReq *req=NULL;
xGLXSingleReply reply;
int length=0, numbytes=0, major_opcode=0;
EPHYR_RETURN_VAL_IF_FAIL (dpy && a_string, FALSE) ;
EPHYR_LOG ("enter\n") ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
return FALSE ;
}
EPHYR_LOG ("major opcode: %d\n", major_opcode) ;
LockDisplay (dpy);
/* All of the GLX protocol requests for getting a string from the server
* look the same. The exact meaning of the a_for_whom field is usually
* either the screen number (for glXQueryServerString) or the context tag
* (for GLXSingle).
*/
GetReq (GLXGenericGetString, req);
req->reqType = major_opcode;
req->glxCode = X_GLXQueryServerString;
req->for_whom = a_screen_number;
req->name = a_string_name;
_XReply (dpy, (xReply *)&reply, 0, False);
length = reply.length * 4;
numbytes = reply.size;
*a_string = (char *) Xmalloc( numbytes );
if (*a_string != NULL) {
if (_XRead (dpy, *a_string, numbytes)) {
EPHYR_LOG_ERROR ("read failed\n") ;
}
length -= numbytes;
}
_XEatData (dpy, length) ;
UnlockDisplay (dpy);
SyncHandle ();
EPHYR_LOG ("leave\n") ;
return TRUE ;
}
Bool
ephyrHostGLXGetVisualConfigs (int32_t a_screen,
int32_t *a_num_visuals,
int32_t *a_num_props,
int32_t *a_props_buf_size,
int32_t **a_props_buf)
{
Bool is_ok = FALSE ;
Display *dpy = hostx_get_display () ;
xGLXGetVisualConfigsReq *req;
xGLXGetFBConfigsReq *fb_req;
xGLXVendorPrivateWithReplyReq *vpreq;
xGLXGetFBConfigsSGIXReq *sgi_req;
xGLXGetVisualConfigsReply reply;
unsigned supported_request=0;
char *server_glx_version=NULL,
*server_glx_extensions=NULL ;
int j=0,
screens=0,
major_opcode=0,
num_props=0,
num_visuals=0,
props_buf_size=0,
props_per_visual_size=0;
int32_t *props_buf=NULL;
EPHYR_RETURN_VAL_IF_FAIL (dpy, FALSE) ;
screens = ScreenCount (dpy);
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get opcode\n") ;
goto out ;
}
if (!ephyrHostGLXGetStringFromServer (0, GLX_VERSION,
&server_glx_version)
|| !server_glx_version) {
EPHYR_LOG_ERROR ("failed to get glx version from server\n") ;
goto out ;
}
if (atof (server_glx_version) >= 1.3 ) {
supported_request = 1;
}
if (!ephyrHostGLXGetStringFromServer (a_screen, GLX_EXTENSIONS,
&server_glx_extensions)) {
EPHYR_LOG_ERROR ("failed to get glx extensions from server for screen: %d\n",
a_screen) ;
goto out ;
}
if (supported_request != 1) {
if (server_glx_extensions
&& strstr (server_glx_extensions, "GLX_SGIX_fbconfig" ) != NULL ) {
supported_request = 2;
} else {
supported_request = 3;
}
}
LockDisplay(dpy);
switch (supported_request) {
case 1:
GetReq(GLXGetFBConfigs,fb_req);
fb_req->reqType = major_opcode;
fb_req->glxCode = X_GLXGetFBConfigs;
fb_req->screen = a_screen;
break;
case 2:
GetReqExtra(GLXVendorPrivateWithReply,
sz_xGLXGetFBConfigsSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
sgi_req->reqType = major_opcode;
sgi_req->glxCode = X_GLXVendorPrivateWithReply;
sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
sgi_req->screen = a_screen;
break;
case 3:
GetReq(GLXGetVisualConfigs,req);
req->reqType = major_opcode;
req->glxCode = X_GLXGetVisualConfigs;
req->screen = a_screen;
break;
}
if (!_XReply(dpy, (xReply*) &reply, 0, False)) {
EPHYR_LOG_ERROR ("unknown error\n") ;
UnlockDisplay(dpy);
goto out ;
}
if (!reply.numVisuals) {
EPHYR_LOG_ERROR ("screen does not support GL rendering\n") ;
UnlockDisplay(dpy);
goto out ;
}
num_visuals = reply.numVisuals ;
/* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for
* FIXME: FBconfigs?
*/
/* Check number of properties */
num_props = reply.numProps;
if ((num_props < __GLX_MIN_CONFIG_PROPS) ||
(num_props > __GLX_MAX_CONFIG_PROPS)) {
/* Huh? Not in protocol defined limits. Punt */
EPHYR_LOG_ERROR ("got a bad reply to request\n") ;
UnlockDisplay(dpy);
goto out ;
}
if (supported_request != 3) {
num_props *= 2;
}
props_per_visual_size = num_props * __GLX_SIZE_INT32;
props_buf_size = props_per_visual_size * reply.numVisuals;
props_buf = malloc (props_buf_size) ;
for (j = 0; j < reply.numVisuals; j++) {
if (_XRead (dpy,
(char*)props_buf + j*props_per_visual_size,
props_per_visual_size) != Success) {
EPHYR_LOG_ERROR ("read failed\n") ;
}
}
UnlockDisplay(dpy);
*a_num_visuals = num_visuals ;
*a_num_props = num_props ;
*a_props_buf_size = props_buf_size ;
*a_props_buf = props_buf ;
is_ok = TRUE ;
out:
if (server_glx_version) {
XFree (server_glx_version) ;
server_glx_version = NULL ;
}
if (server_glx_extensions) {
XFree (server_glx_extensions) ;
server_glx_extensions = NULL ;
}
SyncHandle () ;
return is_ok;
}
Bool
ephyrHostGLXSendClientInfo (int32_t a_major, int32_t a_minor,
const char* a_extension_list)
{
Bool is_ok = FALSE ;
Display *dpy = hostx_get_display () ;
xGLXClientInfoReq *req;
int size;
int32_t major_opcode=0 ;
EPHYR_RETURN_VAL_IF_FAIL (dpy && a_extension_list, FALSE) ;
if (!ephyrHostGLXGetMajorOpcode (&major_opcode)) {
EPHYR_LOG_ERROR ("failed to get major opcode\n") ;
goto out ;
}
LockDisplay (dpy);
GetReq (GLXClientInfo,req);
req->reqType = major_opcode;
req->glxCode = X_GLXClientInfo;
req->major = a_major;
req->minor = a_minor;
size = strlen (a_extension_list) + 1;
req->length += (size + 3) >> 2;
req->numbytes = size;
Data (dpy, a_extension_list, size);
is_ok=TRUE ;
out:
UnlockDisplay(dpy);
SyncHandle();
return is_ok ;
}
#endif /*XEPHYR_DRI*/
Reference in New Issue View Git Blame Copy Permalink