blob: 52e067165c8c1a127f9ab289a8bd4708c4aef079 [file] [log] [blame]
/*
* (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 "glxextensions.h"
#define WARN_ONCE_GLX_1_3(a, b) { \
static int warned=1; \
if(warned) { \
warn_GLX_1_3((a), b ); \
warned=0; \
} \
}
/**
* Emit a warning when clients use GLX 1.3 functions on pre-1.3 systems.
*/
static void
warn_GLX_1_3(Display *dpy, const char *function_name)
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
if (priv->minorVersion < 3) {
fprintf(stderr,
"WARNING: Application calling GLX 1.3 function \"%s\" "
"when GLX 1.3 is not supported! This is an application bug!\n",
function_name);
}
}
/**
* 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.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
ChangeDrawableAttribute(Display * dpy, GLXDrawable drawable,
const CARD32 * attribs, size_t num_attribs)
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
CARD32 *output;
CARD8 opcode;
if ((dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
xGLXChangeDrawableAttributesReq *req;
GetReqExtra(GLXChangeDrawableAttributes, 8 + (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, 4 + (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++;
}
(void) memcpy(output, attribs, sizeof(CARD32) * 2 * num_attribs);
UnlockDisplay(dpy);
SyncHandle();
return;
}
/**
* 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.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
DestroyPbuffer(Display * dpy, GLXDrawable drawable)
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
CARD8 opcode;
if ((dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
if ((priv->majorVersion > 1) || (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();
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
/**
* 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.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static int
GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
__GLXdisplayPrivate *priv;
xGLXGetDrawableAttributesReply reply;
CARD32 *data;
CARD8 opcode;
unsigned int length;
unsigned int i;
unsigned int num_attributes;
GLboolean use_glx_1_3;
if ((dpy == NULL) || (drawable == 0)) {
return 0;
}
priv = __glXInitialize(dpy);
use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));
*value = 0;
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return 0;
LockDisplay(dpy);
if (use_glx_1_3) {
xGLXGetDrawableAttributesReq *req;
GetReqExtra(GLXGetDrawableAttributes, 4, 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 = (use_glx_1_3) ? reply.numAttribs : length / 2;
data = (CARD32 *) Xmalloc(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) {
*value = data[(i * 2) + 1];
break;
}
}
#ifdef GLX_DIRECT_RENDERING
{
__GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
if (pdraw != NULL && !pdraw->textureTarget)
pdraw->textureTarget =
determineTextureTarget((const int *) data, num_attributes);
if (pdraw != NULL && !pdraw->textureFormat)
pdraw->textureFormat =
determineTextureFormat((const int *) data, num_attributes);
}
#endif
Xfree(data);
}
}
UnlockDisplay(dpy);
SyncHandle();
return 0;
}
/**
* Create a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static GLXDrawable
CreateDrawable(Display * dpy, const __GLcontextModes * fbconfig,
Drawable drawable, const int *attrib_list, CARD8 glxCode)
{
xGLXCreateWindowReq *req;
CARD32 *data;
unsigned int i;
CARD8 opcode;
i = 0;
if (attrib_list) {
while (attrib_list[i * 2] != None)
i++;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return None;
LockDisplay(dpy);
GetReqExtra(GLXCreateWindow, 8 * i, req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = glxCode;
req->screen = (CARD32) fbconfig->screen;
req->fbconfig = fbconfig->fbconfigID;
req->window = (CARD32) drawable;
req->glxwindow = (GLXWindow) XAllocID(dpy);
req->numAttribs = (CARD32) i;
if (attrib_list)
memcpy(data, attrib_list, 8 * i);
UnlockDisplay(dpy);
SyncHandle();
#ifdef GLX_DIRECT_RENDERING
do {
/* FIXME: Maybe delay __DRIdrawable creation until the drawable
* is actually bound to a context... */
__GLXdisplayPrivate *const priv = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw;
__GLXscreenConfigs *psc;
psc = &priv->screenConfigs[fbconfig->screen];
if (psc->driScreen == NULL)
break;
pdraw = psc->driScreen->createDrawable(psc, drawable,
req->glxwindow, fbconfig);
if (pdraw == NULL) {
fprintf(stderr, "failed to create drawable\n");
break;
}
if (__glxHashInsert(psc->drawHash, req->glxwindow, pdraw)) {
(*pdraw->destroyDrawable) (pdraw);
return None; /* FIXME: Check what we're supposed to do here... */
}
pdraw->textureTarget = determineTextureTarget(attrib_list, i);
pdraw->textureFormat = determineTextureFormat(attrib_list, i);
} while (0);
#endif
return (GLXDrawable) req->glxwindow;
}
/**
* Destroy a non-pbuffer GLX drawable.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static void
DestroyDrawable(Display * dpy, GLXDrawable drawable, CARD32 glxCode)
{
xGLXDestroyPbufferReq *req;
CARD8 opcode;
if ((dpy == NULL) || (drawable == 0)) {
return;
}
opcode = __glXSetupForCommand(dpy);
if (!opcode)
return;
LockDisplay(dpy);
GetReqExtra(GLXDestroyPbuffer, 4, req);
req->reqType = opcode;
req->glxCode = glxCode;
req->pbuffer = (GLXPbuffer) drawable;
UnlockDisplay(dpy);
SyncHandle();
#ifdef GLX_DIRECT_RENDERING
{
int screen;
__GLXdisplayPrivate *const priv = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
__GLXscreenConfigs *psc = &priv->screenConfigs[screen];
if (pdraw != NULL) {
(*pdraw->destroyDrawable) (pdraw);
__glxHashDelete(psc->drawHash, drawable);
}
}
#endif
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.
*
* \todo
* This function needs to be modified to work with direct-rendering drivers.
*/
static GLXDrawable
CreatePbuffer(Display * dpy, const __GLcontextModes * fbconfig,
unsigned int width, unsigned int height,
const int *attrib_list, GLboolean size_in_attribs)
{
__GLXdisplayPrivate *priv = __glXInitialize(dpy);
GLXDrawable id = 0;
CARD32 *data;
CARD8 opcode;
unsigned int i;
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->majorVersion > 1) || (priv->minorVersion >= 3)) {
xGLXCreatePbufferReq *req;
unsigned int extra = (size_in_attribs) ? 0 : 2;
GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
data = (CARD32 *) (req + 1);
req->reqType = opcode;
req->glxCode = X_GLXCreatePbuffer;
req->screen = (CARD32) fbconfig->screen;
req->fbconfig = fbconfig->fbconfigID;
req->pbuffer = (GLXPbuffer) id;
req->numAttribs = (CARD32) (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] = (CARD32) fbconfig->screen;
data[1] = (CARD32) fbconfig->fbconfigID;
data[2] = (CARD32) id;
data[3] = (CARD32) width;
data[4] = (CARD32) height;
data += 5;
}
(void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
UnlockDisplay(dpy);
SyncHandle();
return id;
}
/**
* Create a new pbuffer.
*/
PUBLIC GLXPbufferSGIX
glXCreateGLXPbufferSGIX(Display * dpy, GLXFBConfigSGIX config,
unsigned int width, unsigned int height,
int *attrib_list)
{
return (GLXPbufferSGIX) CreatePbuffer(dpy, (__GLcontextModes *) config,
width, height,
attrib_list, GL_FALSE);
}
/**
* Create a new pbuffer.
*/
PUBLIC GLXPbuffer
glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
{
int i, width, height;
width = 0;
height = 0;
WARN_ONCE_GLX_1_3(dpy, __func__);
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, (__GLcontextModes *) config,
width, height, attrib_list, GL_TRUE);
}
/**
* Destroy an existing pbuffer.
*/
PUBLIC void
glXDestroyPbuffer(Display * dpy, GLXPbuffer pbuf)
{
DestroyPbuffer(dpy, pbuf);
}
/**
* Query an attribute of a drawable.
*/
PUBLIC void
glXQueryDrawable(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
GetDrawableAttribute(dpy, drawable, attribute, value);
}
/**
* Query an attribute of a pbuffer.
*/
PUBLIC int
glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
int attribute, unsigned int *value)
{
return GetDrawableAttribute(dpy, drawable, attribute, value);
}
/**
* Select the event mask for a drawable.
*/
PUBLIC void
glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
{
CARD32 attribs[2];
attribs[0] = (CARD32) GLX_EVENT_MASK;
attribs[1] = (CARD32) mask;
ChangeDrawableAttribute(dpy, drawable, attribs, 1);
}
/**
* Get the selected event mask for a drawable.
*/
PUBLIC void
glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
{
unsigned int value;
/* 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?
*/
GetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
*mask = value;
}
PUBLIC GLXPixmap
glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap,
const int *attrib_list)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
return CreateDrawable(dpy, (__GLcontextModes *) config,
(Drawable) pixmap, attrib_list, X_GLXCreatePixmap);
}
PUBLIC GLXWindow
glXCreateWindow(Display * dpy, GLXFBConfig config, Window win,
const int *attrib_list)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
return CreateDrawable(dpy, (__GLcontextModes *) config,
(Drawable) win, attrib_list, X_GLXCreateWindow);
}
PUBLIC void
glXDestroyPixmap(Display * dpy, GLXPixmap pixmap)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
DestroyDrawable(dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap);
}
PUBLIC void
glXDestroyWindow(Display * dpy, GLXWindow win)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
DestroyDrawable(dpy, (GLXDrawable) win, X_GLXDestroyWindow);
}
PUBLIC
GLX_ALIAS_VOID(glXDestroyGLXPbufferSGIX,
(Display * dpy, GLXPbufferSGIX pbuf),
(dpy, pbuf), glXDestroyPbuffer)
PUBLIC
GLX_ALIAS_VOID(glXSelectEventSGIX,
(Display * dpy, GLXDrawable drawable,
unsigned long mask), (dpy, drawable, mask), glXSelectEvent)
PUBLIC
GLX_ALIAS_VOID(glXGetSelectedEventSGIX,
(Display * dpy, GLXDrawable drawable,
unsigned long *mask), (dpy, drawable, mask),
glXGetSelectedEvent)