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xserver/hw/kdrive/ephyr/ephyrhostglx.c

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/*
* 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
/*
* including some server headers (like kdrive-config.h)
* might define the macro _XSERVER64
* on 64 bits machines. That macro must _NOT_ be defined for Xlib
* client code, otherwise bad things happen.
* So let's undef that macro if necessary.
*/
#ifdef _XSERVER64
#undef _XSERVER64
#endif
#include <X11/Xlibint.h>
#include <GL/glx.h>
#include <GL/internal/glcore.h>
#include <GL/glxproto.h>
#include <GL/glxint.h>
#include "ephyrhostglx.h"
#define _HAVE_XALLOC_DECLS
#include "ephyrlog.h"
#include "hostx.h"
enum VisualConfRequestType {
EPHYR_GET_FB_CONFIG,
EPHYR_VENDOR_PRIV_GET_FB_CONFIG_SGIX,
EPHYR_GET_VISUAL_CONFIGS
};
static Bool ephyrHostGLXGetVisualConfigsInternal
(enum VisualConfRequestType a_type,
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
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();
int major_opcode = 0;
xGLXQueryVersionReq *req = NULL;
xGLXQueryVersionReply reply;
EPHYR_RETURN_VAL_IF_FAIL(a_major && a_minor, FALSE);
EPHYR_LOG("enter\n");
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
EPHYR_LOG("major opcode: %d\n", major_opcode);
/* Send the glXQueryVersion request */
memset(&reply, 0, sizeof(reply));
LockDisplay(dpy);
GetReq(GLXQueryVersion, req);
req->reqType = major_opcode;
req->glxCode = X_GLXQueryVersion;
req->majorVersion = 2;
req->minorVersion = 1;
_XReply(dpy, (xReply *) & reply, 0, False);
UnlockDisplay(dpy);
SyncHandle();
*a_major = reply.majorVersion;
*a_minor = reply.minorVersion;
EPHYR_LOG("major:%d, minor:%d\n", *a_major, *a_minor);
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.
* (this has been copied from the mesa source code)
*/
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,
enum EphyrHostGLXGetStringOps a_op,
char **a_string)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int default_screen = DefaultScreen(dpy);
xGLXGenericGetStringReq *req = NULL;
xGLXSingleReply reply;
int length = 0, numbytes = 0, major_opcode = 0, get_string_op = 0;
EPHYR_RETURN_VAL_IF_FAIL(dpy && a_string, FALSE);
EPHYR_LOG("enter\n");
switch (a_op) {
case EPHYR_HOST_GLX_QueryServerString:
get_string_op = X_GLXQueryServerString;
break;
case EPHYR_HOST_GLX_GetString:
get_string_op = X_GLsop_GetString;
EPHYR_LOG("Going to glXGetString. strname:%#x, ctxttag:%d\n",
a_string_name, a_screen_number);
break;
default:
EPHYR_LOG_ERROR("unknown EphyrHostGLXGetStringOp:%d\n", a_op);
goto out;
}
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
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 = get_string_op;
req->for_whom = default_screen;
req->name = a_string_name;
_XReply(dpy, (xReply *) & reply, 0, False);
length = reply.length * 4;
if (!length) {
numbytes = 0;
}
else {
numbytes = reply.size;
}
EPHYR_LOG("going to get a string of size:%d\n", numbytes);
*a_string = (char *) Xmalloc(numbytes + 1);
if (!a_string) {
EPHYR_LOG_ERROR("allocation failed\n");
goto out;
}
memset(*a_string, 0, numbytes + 1);
if (_XRead(dpy, *a_string, numbytes)) {
UnlockDisplay(dpy);
SyncHandle();
EPHYR_LOG_ERROR("read failed\n");
goto out;
}
length -= numbytes;
_XEatData(dpy, length);
UnlockDisplay(dpy);
SyncHandle();
EPHYR_LOG("strname:%#x, strvalue:'%s', strlen:%d\n",
a_string_name, *a_string, numbytes);
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
static Bool
ephyrHostGLXGetVisualConfigsInternal(enum VisualConfRequestType a_type,
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;
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;
}
LockDisplay(dpy);
switch (a_type) {
case EPHYR_GET_FB_CONFIG:
GetReq(GLXGetFBConfigs, fb_req);
fb_req->reqType = major_opcode;
fb_req->glxCode = X_GLXGetFBConfigs;
fb_req->screen = DefaultScreen(dpy);
break;
case EPHYR_VENDOR_PRIV_GET_FB_CONFIG_SGIX:
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 = DefaultScreen(dpy);
break;
case EPHYR_GET_VISUAL_CONFIGS:
GetReq(GLXGetVisualConfigs, req);
req->reqType = major_opcode;
req->glxCode = X_GLXGetVisualConfigs;
req->screen = DefaultScreen(dpy);
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 (a_type != EPHYR_GET_VISUAL_CONFIGS) {
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 = reply.numProps;
*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
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;
EPHYR_LOG("enter\n");
is_ok = ephyrHostGLXGetVisualConfigsInternal(EPHYR_GET_VISUAL_CONFIGS,
a_screen,
a_num_visuals,
a_num_props,
a_props_buf_size, a_props_buf);
EPHYR_LOG("leave:%d\n", is_ok);
return is_ok;
}
Bool
ephyrHostGLXVendorPrivGetFBConfigsSGIX(int 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;
EPHYR_LOG("enter\n");
is_ok = ephyrHostGLXGetVisualConfigsInternal
(EPHYR_VENDOR_PRIV_GET_FB_CONFIG_SGIX,
a_screen, a_num_visuals, a_num_props, a_props_buf_size, a_props_buf);
EPHYR_LOG("leave\n");
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 += bytes_to_int32(size);
req->numbytes = size;
Data(dpy, a_extension_list, size);
UnlockDisplay(dpy);
SyncHandle();
is_ok = TRUE;
out:
return is_ok;
}
Bool
ephyrHostGLXCreateContext(int a_screen,
int a_visual_id,
int a_context_id,
int a_share_list_ctxt_id, Bool a_direct)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int major_opcode = 0, remote_context_id = 0;
xGLXCreateContextReq *req;
EPHYR_LOG("enter. screen:%d, visual:%d, contextid:%d, direct:%d\n",
a_screen, a_visual_id, a_context_id, a_direct);
if (!hostx_allocate_resource_id_peer(a_context_id, &remote_context_id)) {
EPHYR_LOG_ERROR("failed to peer the context id %d host X",
remote_context_id);
goto out;
}
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
LockDisplay(dpy);
/* Send the glXCreateContext request */
GetReq(GLXCreateContext, req);
req->reqType = major_opcode;
req->glxCode = X_GLXCreateContext;
req->context = remote_context_id;
req->visual = a_visual_id;
req->screen = DefaultScreen(dpy);
req->shareList = a_share_list_ctxt_id;
req->isDirect = a_direct;
UnlockDisplay(dpy);
SyncHandle();
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
Bool
ephyrHostDestroyContext(int a_ctxt_id)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int major_opcode = 0, remote_ctxt_id = 0;
xGLXDestroyContextReq *req = NULL;
EPHYR_LOG("enter:%d\n", a_ctxt_id);
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
if (!hostx_get_resource_id_peer(a_ctxt_id, &remote_ctxt_id)) {
EPHYR_LOG_ERROR("failed to get remote glx ctxt id\n");
goto out;
}
EPHYR_LOG("host context id:%d\n", remote_ctxt_id);
LockDisplay(dpy);
GetReq(GLXDestroyContext, req);
req->reqType = major_opcode;
req->glxCode = X_GLXDestroyContext;
req->context = remote_ctxt_id;
UnlockDisplay(dpy);
SyncHandle();
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
Bool
ephyrHostGLXMakeCurrent(int a_drawable,
int a_glx_ctxt_id, int a_old_ctxt_tag, int *a_ctxt_tag)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int32_t major_opcode = 0;
int remote_glx_ctxt_id = 0;
xGLXMakeCurrentReq *req;
xGLXMakeCurrentReply reply;
EPHYR_RETURN_VAL_IF_FAIL(a_ctxt_tag, FALSE);
EPHYR_LOG("enter. drawable:%d, context:%d, oldtag:%d\n",
a_drawable, a_glx_ctxt_id, a_old_ctxt_tag);
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
if (!hostx_get_resource_id_peer(a_glx_ctxt_id, &remote_glx_ctxt_id)) {
EPHYR_LOG_ERROR("failed to get remote glx ctxt id\n");
goto out;
}
LockDisplay(dpy);
GetReq(GLXMakeCurrent, req);
req->reqType = major_opcode;
req->glxCode = X_GLXMakeCurrent;
req->drawable = a_drawable;
req->context = remote_glx_ctxt_id;
req->oldContextTag = a_old_ctxt_tag;
memset(&reply, 0, sizeof(reply));
if (!_XReply(dpy, (xReply *) & reply, 0, False)) {
EPHYR_LOG_ERROR("failed to get reply from host\n");
UnlockDisplay(dpy);
SyncHandle();
goto out;
}
UnlockDisplay(dpy);
SyncHandle();
*a_ctxt_tag = reply.contextTag;
EPHYR_LOG("context tag:%d\n", *a_ctxt_tag);
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
#define X_GLXSingle 0
#define __EPHYR_GLX_SINGLE_PUT_CHAR(offset,a) \
*((INT8 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_PUT_SHORT(offset,a) \
*((INT16 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_PUT_LONG(offset,a) \
*((INT32 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_PUT_FLOAT(offset,a) \
*((FLOAT32 *) (pc + offset)) = a
#define EPHYR_GLX_SINGLE_READ_XREPLY() \
(void) _XReply(dpy, (xReply*) &reply, 0, False)
#define EPHYR_GLX_SINGLE_GET_RETVAL(a,cast) \
a = (cast) reply.retval
#define EPHYR_GLX_SINGLE_GET_SIZE(a) \
a = (GLint) reply.size
#define EPHYR_GLX_SINGLE_GET_CHAR(p) \
*p = *(GLbyte *)&reply.pad3;
#define EPHYR_GLX_SINGLE_GET_SHORT(p) \
*p = *(GLshort *)&reply.pad3;
#define EPHYR_GLX_SINGLE_GET_LONG(p) \
*p = *(GLint *)&reply.pad3;
#define EPHYR_GLX_SINGLE_GET_FLOAT(p) \
*p = *(GLfloat *)&reply.pad3;
Bool
ephyrHostGetIntegerValue(int a_current_context_tag, int a_int, int *a_val)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int major_opcode = 0, size = 0;
xGLXSingleReq *req = NULL;
xGLXSingleReply reply;
unsigned char *pc = NULL;
EPHYR_RETURN_VAL_IF_FAIL(a_val, FALSE);
EPHYR_LOG("enter\n");
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
LockDisplay(dpy);
GetReqExtra(GLXSingle, 4, req);
req->reqType = major_opcode;
req->glxCode = X_GLsop_GetIntegerv;
req->contextTag = a_current_context_tag;
pc = ((unsigned char *) (req) + sz_xGLXSingleReq);
EPHYR_GLX_SINGLE_PUT_LONG(0, a_int);
EPHYR_GLX_SINGLE_READ_XREPLY();
EPHYR_GLX_SINGLE_GET_SIZE(size);
if (!size) {
UnlockDisplay(dpy);
SyncHandle();
EPHYR_LOG_ERROR("X_GLsop_GetIngerv failed\n");
goto out;
}
EPHYR_GLX_SINGLE_GET_LONG(a_val);
UnlockDisplay(dpy);
SyncHandle();
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
Bool
ephyrHostIsContextDirect(int a_ctxt_id, int *a_is_direct)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
xGLXIsDirectReq *req = NULL;
xGLXIsDirectReply reply;
int major_opcode = 0, remote_glx_ctxt_id = 0;
EPHYR_LOG("enter\n");
if (!ephyrHostGLXGetMajorOpcode(&major_opcode)) {
EPHYR_LOG_ERROR("failed to get major opcode\n");
goto out;
}
if (!hostx_get_resource_id_peer(a_ctxt_id, &remote_glx_ctxt_id)) {
EPHYR_LOG_ERROR("failed to get remote glx ctxt id\n");
goto out;
}
memset(&reply, 0, sizeof(reply));
/* Send the glXIsDirect request */
LockDisplay(dpy);
GetReq(GLXIsDirect, req);
req->reqType = major_opcode;
req->glxCode = X_GLXIsDirect;
req->context = remote_glx_ctxt_id;
if (!_XReply(dpy, (xReply *) & reply, 0, False)) {
EPHYR_LOG_ERROR("fail in reading reply from host\n");
UnlockDisplay(dpy);
SyncHandle();
goto out;
}
UnlockDisplay(dpy);
SyncHandle();
*a_is_direct = reply.isDirect;
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
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