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/*
* (C) Copyright IBM Corporation 2004
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* IBM AND/OR THEIR SUPPLIERS 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.
*/
/**
* \file glx_pbuffer.c
* Implementation of pbuffer related functions.
*
* \author Ian Romanick <idr@us.ibm.com>
*/
#include <inttypes.h>
#include "glxclient.h"
#include <X11/extensions/extutil.h>
#include <X11/extensions/Xext.h>
#include <assert.h>
#include <string.h>
#include <limits.h>
#include "glxextensions.h"
#include <X11/Xlib-xcb.h>
#include <xcb/xproto.h>
#ifdef GLX_USE_APPLEGL
#include <pthread.h>
#include "apple/apple_glx_drawable.h"
#endif
#include "glx_error.h"
#ifndef GLX_USE_APPLEGL
/**
* Change a drawable's attribute.
*
* This function is used to implement \c glXSelectEvent and
* \c glXSelectEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*/
static void
ChangeDrawableAttribute(Display * dpy, GLXDrawable drawable,
const CARD32 * attribs, size_t num_attribs)
{
struct glx_display *priv = __glXInitialize(dpy);
#ifdef GLX_DIRECT_RENDERING
__GLXDRIdrawable *pdraw;
int i;
#endif
CARD32 *output;
CARD8 opcode;
if ((priv == NULL) || (dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
if (priv->minorVersion >= 3) {
xGLXChangeDrawableAttributesReq *req;
GetReqExtra(GLXChangeDrawableAttributes, 8 * num_attribs, req);
output = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = X_GLXChangeDrawableAttributes;
req->drawable = drawable;
req->numAttribs = (CARD32) num_attribs;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra(GLXVendorPrivateWithReply, 8 + (8 * num_attribs), vpreq);
output = (CARD32 *) (vpreq + 1);
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_ChangeDrawableAttributesSGIX;
output[0] = (CARD32) drawable;
output[1] = num_attribs;
output += 2;
}
(void) memcpy(output, attribs, sizeof(CARD32) * 2 * num_attribs);
UnlockDisplay(dpy);
SyncHandle();
#ifdef GLX_DIRECT_RENDERING
pdraw = GetGLXDRIDrawable(dpy, drawable);
if (!pdraw)
return;
for (i = 0; i < num_attribs; i++) {
switch(attribs[i * 2]) {
case GLX_EVENT_MASK:
/* Keep a local copy for masking out DRI2 proto events as needed */
pdraw->eventMask = attribs[i * 2 + 1];
break;
}
}
#endif
return;
}
#ifdef GLX_DIRECT_RENDERING
static GLenum
determineTextureTarget(const int *attribs, int numAttribs)
{
GLenum target = 0;
int i;
for (i = 0; i < numAttribs; i++) {
if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {
switch (attribs[2 * i + 1]) {
case GLX_TEXTURE_2D_EXT:
target = GL_TEXTURE_2D;
break;
case GLX_TEXTURE_RECTANGLE_EXT:
target = GL_TEXTURE_RECTANGLE_ARB;
break;
}
}
}
return target;
}
static GLenum
determineTextureFormat(const int *attribs, int numAttribs)
{
int i;
for (i = 0; i < numAttribs; i++) {
if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)
return attribs[2 * i + 1];
}
return 0;
}
#endif
static GLboolean
CreateDRIDrawable(Display *dpy, struct glx_config *config,
XID drawable, XID glxdrawable, int type,
const int *attrib_list, size_t num_attribs)
{
#ifdef GLX_DIRECT_RENDERING
struct glx_display *const priv = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw;
struct glx_screen *psc;
if (priv == NULL) {
fprintf(stderr, "failed to create drawable\n");
return GL_FALSE;
}
psc = priv->screens[config->screen];
if (psc->driScreen == NULL)
return GL_TRUE;
pdraw = psc->driScreen->createDrawable(psc, drawable, glxdrawable,
type, config);
if (pdraw == NULL) {
fprintf(stderr, "failed to create drawable\n");
return GL_FALSE;
}
if (__glxHashInsert(priv->drawHash, glxdrawable, pdraw)) {
(*pdraw->destroyDrawable) (pdraw);
return GL_FALSE;
}
pdraw->textureTarget = determineTextureTarget(attrib_list, num_attribs);
pdraw->textureFormat = determineTextureFormat(attrib_list, num_attribs);
pdraw->refcount = 1;
#endif
return GL_TRUE;
}
static void
DestroyDRIDrawable(Display *dpy, GLXDrawable drawable)
{
#ifdef GLX_DIRECT_RENDERING
struct glx_display *const priv = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
if (priv != NULL && pdraw != NULL) {
(*pdraw->destroyDrawable) (pdraw);
__glxHashDelete(priv->drawHash, drawable);
}
#endif
}
/**
* Get a drawable's attribute.
*
* This function is used to implement \c glXGetSelectedEvent and
* \c glXGetSelectedEventSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*
* \todo
* The number of attributes returned is likely to be small, probably less than
* 10. Given that, this routine should try to use an array on the stack to
* capture the reply rather than always calling Xmalloc.
*/
int
__glXGetDrawableAttribute(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
struct glx_display *priv;
xGLXGetDrawableAttributesReply reply;
CARD32 *data;
CARD8 opcode;
unsigned int length;
unsigned int i;
unsigned int num_attributes;
int found = 0;
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
__GLXDRIdrawable *pdraw;
#endif
if (dpy == NULL)
return 0;
/* Page 38 (page 52 of the PDF) of glxencode1.3.pdf says:
*
* "If drawable is not a valid GLX drawable, a GLXBadDrawable error is
* generated."
*/
if (drawable == 0) {
__glXSendError(dpy, GLXBadDrawable, 0, X_GLXGetDrawableAttributes, false);
return 0;
}
priv = __glXInitialize(dpy);
if (priv == NULL)
return 0;
*value = 0;
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return 0;
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
pdraw = GetGLXDRIDrawable(dpy, drawable);
if (attribute == GLX_BACK_BUFFER_AGE_EXT) {
struct glx_context *gc = __glXGetCurrentContext();
struct glx_screen *psc;
/* The GLX_EXT_buffer_age spec says:
*
* "If querying GLX_BACK_BUFFER_AGE_EXT and <draw> is not bound to
* the calling thread's current context a GLXBadDrawable error is
* generated."
*/
if (pdraw == NULL || gc == &dummyContext || gc->currentDpy != dpy ||
(gc->currentDrawable != drawable &&
gc->currentReadable != drawable)) {
__glXSendError(dpy, GLXBadDrawable, drawable,
X_GLXGetDrawableAttributes, false);
return 0;
}
psc = pdraw->psc;
if (psc->driScreen->getBufferAge != NULL)
*value = psc->driScreen->getBufferAge(pdraw);
return 1;
}
if (pdraw) {
if (attribute == GLX_SWAP_INTERVAL_EXT) {
*value = pdraw->psc->driScreen->getSwapInterval(pdraw);
return 1;
} else if (attribute == GLX_MAX_SWAP_INTERVAL_EXT) {
*value = pdraw->psc->driScreen->maxSwapInterval;
return 1;
} else if (attribute == GLX_LATE_SWAPS_TEAR_EXT) {
*value = __glXExtensionBitIsEnabled(pdraw->psc,
EXT_swap_control_tear_bit);
return 1;
}
}
#endif
LockDisplay(dpy);
if (priv->minorVersion >= 3) {
xGLXGetDrawableAttributesReq *req;
GetReq(GLXGetDrawableAttributes, req);
req->reqType = opcode;
req->glxCode = X_GLXGetDrawableAttributes;
req->drawable = drawable;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
data = (CARD32 *) (vpreq + 1);
data[0] = (CARD32) drawable;
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
}
_XReply(dpy, (xReply *) & reply, 0, False);
if (reply.type == X_Error) {
UnlockDisplay(dpy);
SyncHandle();
return 0;
}
length = reply.length;
if (length) {
num_attributes = (priv->minorVersion > 2) ? reply.numAttribs : length / 2;
data = malloc(length * sizeof(CARD32));
if (data == NULL) {
/* Throw data on the floor */
_XEatData(dpy, length);
}
else {
_XRead(dpy, (char *) data, length * sizeof(CARD32));
/* Search the set of returned attributes for the attribute requested by
* the caller.
*/
for (i = 0; i < num_attributes; i++) {
if (data[i * 2] == attribute) {
found = 1;
*value = data[(i * 2) + 1];
break;
}
}
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
if (pdraw != NULL) {
if (!pdraw->textureTarget)
pdraw->textureTarget =
determineTextureTarget((const int *) data, num_attributes);
if (!pdraw->textureFormat)
pdraw->textureFormat =
determineTextureFormat((const int *) data, num_attributes);
}
#endif
free(data);
}
}
UnlockDisplay(dpy);
SyncHandle();
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
if (pdraw && attribute == GLX_FBCONFIG_ID && !found && priv && priv->screens != NULL) {
/* If we failed to lookup the GLX_FBCONFIG_ID, it may be because the drawable is
* a bare Window, so try differently by first figure out its visual, then GLX
* visual like driInferDrawableConfig does.
*/
xcb_get_window_attributes_cookie_t cookie = { 0 };
xcb_get_window_attributes_reply_t *attr = NULL;
xcb_connection_t *conn = XGetXCBConnection(dpy);
if (conn) {
cookie = xcb_get_window_attributes(conn, drawable);
attr = xcb_get_window_attributes_reply(conn, cookie, NULL);
if (attr) {
/* Find the Window's GLX Visual */
struct glx_config *conf = glx_config_find_visual(pdraw->psc->visuals, attr->visual);
free(attr);
if (conf && conf->screen >= 0 && conf->screen < ScreenCount(dpy)) {
/* Then find the GLXFBConfig of the GLX Visual */
struct glx_config *c;
for (c = priv->screens[conf->screen]->configs; c != NULL;
c = c->next) {
if (!c->visualID)
continue;
if (c->visualID == conf->visualID) {
*value = c->fbconfigID;
found = 1;
break;
}
}
}
}
}
}
#endif
return found;
}
static int dummyErrorHandler(Display *display, xError *err, XExtCodes *codes,
int *ret_code)
{
return 1; /* do nothing */
}
static void
protocolDestroyDrawable(Display *dpy, GLXDrawable drawable, CARD32 glxCode)
{
xGLXDestroyPbufferReq *req;
CARD8 opcode;
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
GetReq(GLXDestroyPbuffer, req);
req->reqType = opcode;
req->glxCode = glxCode;
req->pbuffer = (GLXPbuffer) drawable;
UnlockDisplay(dpy);
SyncHandle();
/* Viewperf2020/Sw calls XDestroyWindow(win) and then glXDestroyWindow(win),
* causing an X error and abort. This is the workaround.
*/
struct glx_display *priv = __glXInitialize(dpy);
if (priv->screens[0] &&
priv->screens[0]->allow_invalid_glx_destroy_window) {
void *old = XESetError(priv->dpy, priv->codes.extension,
dummyErrorHandler);
XSync(dpy, false);
XESetError(priv->dpy, priv->codes.extension, old);
}
}
/**
* Create a non-pbuffer GLX drawable.
*/
static GLXDrawable
CreateDrawable(Display *dpy, struct glx_config *config,
Drawable drawable, int type, const int *attrib_list)
{
xGLXCreateWindowReq *req;
struct glx_drawable *glxDraw;
CARD32 *data;
unsigned int i;
CARD8 opcode;
GLXDrawable xid;
if (!config)
return None;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2] != None)
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
glxDraw = malloc(sizeof(*glxDraw));
if (!glxDraw)
return None;
LockDisplay(dpy);
GetReqExtra(GLXCreateWindow, 8 * i, req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->screen = config->screen;
req->fbconfig = config->fbconfigID;
req->window = drawable;
req->glxwindow = xid = XAllocID(dpy);
req->numAttribs = i;
if (type == GLX_WINDOW_BIT)
req->glxCode = X_GLXCreateWindow;
else
req->glxCode = X_GLXCreatePixmap;
if (attrib_list)
memcpy(data, attrib_list, 8 * i);
UnlockDisplay(dpy);
SyncHandle();
if (InitGLXDrawable(dpy, glxDraw, drawable, xid)) {
free(glxDraw);
return None;
}
if (!CreateDRIDrawable(dpy, config, drawable, xid, type, attrib_list, i)) {
CARD8 glxCode;
if (type == GLX_PIXMAP_BIT)
glxCode = X_GLXDestroyPixmap;
else
glxCode = X_GLXDestroyWindow;
protocolDestroyDrawable(dpy, xid, glxCode);
xid = None;
}
return xid;
}
/**
* Destroy a non-pbuffer GLX drawable.
*/
static void
DestroyDrawable(Display * dpy, GLXDrawable drawable, CARD32 glxCode)
{
protocolDestroyDrawable(dpy, drawable, glxCode);
DestroyGLXDrawable(dpy, drawable);
DestroyDRIDrawable(dpy, drawable);
return;
}
/**
* Create a pbuffer.
*
* This function is used to implement \c glXCreatePbuffer and
* \c glXCreateGLXPbufferSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*/
static GLXDrawable
CreatePbuffer(Display * dpy, struct glx_config *config,
unsigned int width, unsigned int height,
const int *attrib_list, GLboolean size_in_attribs)
{
struct glx_display *priv = __glXInitialize(dpy);
GLXDrawable id = 0;
CARD32 *data;
CARD8 opcode;
unsigned int i;
GLboolean glx_1_3 = GL_FALSE;
if (priv == NULL)
return None;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2])
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
LockDisplay(dpy);
id = XAllocID(dpy);
if (priv->minorVersion >= 3) {
xGLXCreatePbufferReq *req;
unsigned int extra = (size_in_attribs) ? 0 : 2;
glx_1_3 = GL_TRUE;
GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = X_GLXCreatePbuffer;
req->screen = config->screen;
req->fbconfig = config->fbconfigID;
req->pbuffer = id;
req->numAttribs = i + extra;
if (!size_in_attribs) {
data[(2 * i) + 0] = GLX_PBUFFER_WIDTH;
data[(2 * i) + 1] = width;
data[(2 * i) + 2] = GLX_PBUFFER_HEIGHT;
data[(2 * i) + 3] = height;
data += 4;
}
}
else {
xGLXVendorPrivateReq *vpreq;
GetReqExtra(GLXVendorPrivate, 20 + (8 * i), vpreq);
data = (CARD32 *) (vpreq + 1);
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivate;
vpreq->vendorCode = X_GLXvop_CreateGLXPbufferSGIX;
data[0] = config->screen;
data[1] = config->fbconfigID;
data[2] = id;
data[3] = width;
data[4] = height;
data += 5;
}
(void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
UnlockDisplay(dpy);
SyncHandle();
/* xserver created a pixmap with the same id as pbuffer */
if (!CreateDRIDrawable(dpy, config, id, id, GLX_PBUFFER_BIT, attrib_list, i)) {
CARD32 o = glx_1_3 ? X_GLXDestroyPbuffer : X_GLXvop_DestroyGLXPbufferSGIX;
protocolDestroyDrawable(dpy, id, o);
id = None;
}
return id;
}
/**
* Destroy a pbuffer.
*
* This function is used to implement \c glXDestroyPbuffer and
* \c glXDestroyGLXPbufferSGIX.
*
* \note
* This function dynamically determines whether to use the SGIX_pbuffer
* version of the protocol or the GLX 1.3 version of the protocol.
*/
static void
DestroyPbuffer(Display * dpy, GLXDrawable drawable)
{
struct glx_display *priv = __glXInitialize(dpy);
CARD8 opcode;
if ((priv == NULL) || (dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
if (priv->minorVersion >= 3) {
xGLXDestroyPbufferReq *req;
GetReq(GLXDestroyPbuffer, req);
req->reqType = opcode;
req->glxCode = X_GLXDestroyPbuffer;
req->pbuffer = (GLXPbuffer) drawable;
}
else {
xGLXVendorPrivateWithReplyReq *vpreq;
CARD32 *data;
GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
data = (CARD32 *) (vpreq + 1);
data[0] = (CARD32) drawable;
vpreq->reqType = opcode;
vpreq->glxCode = X_GLXVendorPrivateWithReply;
vpreq->vendorCode = X_GLXvop_DestroyGLXPbufferSGIX;
}
UnlockDisplay(dpy);
SyncHandle();
DestroyDRIDrawable(dpy, drawable);
return;
}
/**
* Create a new pbuffer.
*/
_GLX_PUBLIC GLXPbufferSGIX
glXCreateGLXPbufferSGIX(Display * dpy, GLXFBConfigSGIX config,
unsigned int width, unsigned int height,
int *attrib_list)
{
return (GLXPbufferSGIX) CreatePbuffer(dpy, (struct glx_config *) config,
width, height,
attrib_list, GL_FALSE);
}
#endif /* GLX_USE_APPLEGL */
/**
* Create a new pbuffer.
*/
_GLX_PUBLIC GLXPbuffer
glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
{
int i, width, height;
#ifdef GLX_USE_APPLEGL
GLXPbuffer result;
int errorcode;
#endif
width = 0;
height = 0;
#ifdef GLX_USE_APPLEGL
for (i = 0; attrib_list[i]; ++i) {
switch (attrib_list[i]) {
case GLX_PBUFFER_WIDTH:
width = attrib_list[i + 1];
++i;
break;
case GLX_PBUFFER_HEIGHT:
height = attrib_list[i + 1];
++i;
break;
case GLX_LARGEST_PBUFFER:
/* This is a hint we should probably handle, but how? */
++i;
break;
case GLX_PRESERVED_CONTENTS:
/* The contents are always preserved with AppleSGLX with CGL. */
++i;
break;
default:
return None;
}
}
if (apple_glx_pbuffer_create(dpy, config, width, height, &errorcode,
&result)) {
/*
* apple_glx_pbuffer_create only sets the errorcode to core X11
* errors.
*/
__glXSendError(dpy, errorcode, 0, X_GLXCreatePbuffer, true);
return None;
}
return result;
#else
for (i = 0; attrib_list[i * 2]; i++) {
switch (attrib_list[i * 2]) {
case GLX_PBUFFER_WIDTH:
width = attrib_list[i * 2 + 1];
break;
case GLX_PBUFFER_HEIGHT:
height = attrib_list[i * 2 + 1];
break;
}
}
return (GLXPbuffer) CreatePbuffer(dpy, (struct glx_config *) config,
width, height, attrib_list, GL_TRUE);
#endif
}
/**
* Destroy an existing pbuffer.
*/
_GLX_PUBLIC void
glXDestroyPbuffer(Display * dpy, GLXPbuffer pbuf)
{
#ifdef GLX_USE_APPLEGL
if (apple_glx_pbuffer_destroy(dpy, pbuf)) {
__glXSendError(dpy, GLXBadPbuffer, pbuf, X_GLXDestroyPbuffer, false);
}
#else
DestroyPbuffer(dpy, pbuf);
#endif
}
/**
* Query an attribute of a drawable.
*/
_GLX_PUBLIC void
glXQueryDrawable(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
#ifdef GLX_USE_APPLEGL
Window root;
int x, y;
unsigned int width, height, bd, depth;
if (apple_glx_pixmap_query(drawable, attribute, value))
return; /*done */
if (apple_glx_pbuffer_query(drawable, attribute, value))
return; /*done */
/*
* The OpenGL spec states that we should report GLXBadDrawable if
* the drawable is invalid, however doing so would require that we
* use XSetErrorHandler(), which is known to not be thread safe.
* If we use a round-trip call to validate the drawable, there could
* be a race, so instead we just opt in favor of letting the
* XGetGeometry request fail with a GetGeometry request X error
* rather than GLXBadDrawable, in what is hoped to be a rare
* case of an invalid drawable. In practice most and possibly all
* X11 apps using GLX shouldn't notice a difference.
*/
if (XGetGeometry
(dpy, drawable, &root, &x, &y, &width, &height, &bd, &depth)) {
switch (attribute) {
case GLX_WIDTH:
*value = width;
break;
case GLX_HEIGHT:
*value = height;
break;
}
}
#else
__glXGetDrawableAttribute(dpy, drawable, attribute, value);
#endif
}
#ifndef GLX_USE_APPLEGL
/**
* Query an attribute of a pbuffer.
*/
_GLX_PUBLIC void
glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
int attribute, unsigned int *value)
{
__glXGetDrawableAttribute(dpy, drawable, attribute, value);
}
#endif
/**
* Select the event mask for a drawable.
*/
_GLX_PUBLIC void
glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
{
#ifdef GLX_USE_APPLEGL
XWindowAttributes xwattr;
if (apple_glx_pbuffer_set_event_mask(drawable, mask))
return; /*done */
/*
* The spec allows a window, but currently there are no valid
* events for a window, so do nothing.
*/
if (XGetWindowAttributes(dpy, drawable, &xwattr))
return; /*done */
/* The drawable seems to be invalid. Report an error. */
__glXSendError(dpy, GLXBadDrawable, drawable,
X_GLXChangeDrawableAttributes, false);
#else
CARD32 attribs[2];
attribs[0] = (CARD32) GLX_EVENT_MASK;
attribs[1] = (CARD32) mask;
ChangeDrawableAttribute(dpy, drawable, attribs, 1);
#endif
}
/**
* Get the selected event mask for a drawable.
*/
_GLX_PUBLIC void
glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
{
#ifdef GLX_USE_APPLEGL
XWindowAttributes xwattr;
if (apple_glx_pbuffer_get_event_mask(drawable, mask))
return; /*done */
/*
* The spec allows a window, but currently there are no valid
* events for a window, so do nothing, but set the mask to 0.
*/
if (XGetWindowAttributes(dpy, drawable, &xwattr)) {
/* The window is valid, so set the mask to 0. */
*mask = 0;
return; /*done */
}
/* The drawable seems to be invalid. Report an error. */
__glXSendError(dpy, GLXBadDrawable, drawable, X_GLXGetDrawableAttributes,
true);
#else
unsigned int value = 0;
/* The non-sense with value is required because on LP64 platforms
* sizeof(unsigned int) != sizeof(unsigned long). On little-endian
* we could just type-cast the pointer, but why?
*/
__glXGetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
*mask = value;
#endif
}
_GLX_PUBLIC GLXPixmap
glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap,
const int *attrib_list)
{
#ifdef GLX_USE_APPLEGL
const struct glx_config *modes = (const struct glx_config *) config;
if (apple_glx_pixmap_create(dpy, modes->screen, pixmap, modes))
return None;
return pixmap;
#else
return CreateDrawable(dpy, (struct glx_config *) config,
(Drawable) pixmap, GLX_PIXMAP_BIT, attrib_list);
#endif
}
_GLX_PUBLIC GLXWindow
glXCreateWindow(Display * dpy, GLXFBConfig config, Window win,
const int *attrib_list)
{
#ifdef GLX_USE_APPLEGL
XWindowAttributes xwattr;
XVisualInfo *visinfo;
(void) attrib_list; /*unused according to GLX 1.4 */
XGetWindowAttributes(dpy, win, &xwattr);
visinfo = glXGetVisualFromFBConfig(dpy, config);
if (NULL == visinfo) {
__glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateWindow, false);
return None;
}
if (visinfo->visualid != XVisualIDFromVisual(xwattr.visual)) {
__glXSendError(dpy, BadMatch, 0, X_GLXCreateWindow, true);
return None;
}
free(visinfo);
return win;
#else
return CreateDrawable(dpy, (struct glx_config *) config,
(Drawable) win, GLX_WINDOW_BIT, attrib_list);
#endif
}
_GLX_PUBLIC void
glXDestroyPixmap(Display * dpy, GLXPixmap pixmap)
{
#ifdef GLX_USE_APPLEGL
if (apple_glx_pixmap_destroy(dpy, pixmap))
__glXSendError(dpy, GLXBadPixmap, pixmap, X_GLXDestroyPixmap, false);
#else
DestroyDrawable(dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap);
#endif
}
_GLX_PUBLIC void
glXDestroyWindow(Display * dpy, GLXWindow win)
{
#ifndef GLX_USE_APPLEGL
DestroyDrawable(dpy, (GLXDrawable) win, X_GLXDestroyWindow);
#endif
}
_GLX_PUBLIC
GLX_ALIAS_VOID(glXDestroyGLXPbufferSGIX,
(Display * dpy, GLXPbufferSGIX pbuf),
(dpy, pbuf), glXDestroyPbuffer)
_GLX_PUBLIC
GLX_ALIAS_VOID(glXSelectEventSGIX,
(Display * dpy, GLXDrawable drawable,
unsigned long mask), (dpy, drawable, mask), glXSelectEvent)
_GLX_PUBLIC
GLX_ALIAS_VOID(glXGetSelectedEventSGIX,
(Display * dpy, GLXDrawable drawable,
unsigned long *mask), (dpy, drawable, mask),
glXGetSelectedEvent)
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