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-rw-r--r--src/glx/x11/glx_pbuffer.c594
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diff --git a/src/glx/x11/glx_pbuffer.c b/src/glx/x11/glx_pbuffer.c
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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 "glapi.h"
+#include "glxextensions.h"
+#include "glcontextmodes.h"
+#include "glheader.h"
+
+static void ChangeDrawableAttribute( Display * dpy, GLXDrawable drawable,
+ const CARD32 * attribs, size_t num_attribs );
+
+static void DestroyPbuffer( Display * dpy, GLXDrawable drawable );
+
+static GLXDrawable CreatePbuffer( Display *dpy,
+ const __GLcontextModes * fbconfig, unsigned int width, unsigned int height,
+ const int *attrib_list, GLboolean size_in_attribs );
+
+static int GetDrawableAttribute( Display *dpy, GLXDrawable drawable,
+ int attribute, unsigned int *value );
+
+
+/**
+ * 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;
+
+ GetReqExtra( GLXDestroyPbuffer, 4, 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;
+}
+
+
+/**
+ * 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;
+
+ if ( (dpy == NULL) || (drawable == 0) ) {
+ return 0;
+ }
+
+ priv = __glXInitialize(dpy);
+ GLboolean 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;
+ }
+ }
+
+ 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 = (GLXPbuffer) drawable;
+ req->glxwindow = (GLXWindow) XAllocID(dpy);
+ req->numAttribs = (CARD32) i;
+
+ memcpy( data, attrib_list, 8 * i );
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ 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();
+
+ 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)
+{
+ return (GLXPbuffer) CreatePbuffer( dpy, (__GLcontextModes *) config,
+ 0, 0,
+ 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)
+{
+ 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 )
+{
+ return CreateDrawable( dpy, (__GLcontextModes *) config,
+ (Drawable) pixmap, attrib_list,
+ X_GLXCreatePixmap );
+}
+
+
+PUBLIC GLXWindow
+glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
+ const int *attrib_list )
+{
+ return CreateDrawable( dpy, (__GLcontextModes *) config,
+ (Drawable) win, attrib_list,
+ X_GLXCreateWindow );
+}
+
+
+PUBLIC void
+glXDestroyPixmap(Display *dpy, GLXPixmap pixmap)
+{
+ DestroyDrawable( dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap );
+}
+
+
+PUBLIC void
+glXDestroyWindow(Display *dpy, GLXWindow win)
+{
+ 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)