1579 lines
42 KiB
C
1579 lines
42 KiB
C
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/* $XFree86: xc/programs/Xserver/GL/glx/glxcmds.c,v 1.9 2002/12/14 01:36:09 dawes Exp $ */
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/*
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** License Applicability. Except to the extent portions of this file are
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** made subject to an alternative license as permitted in the SGI Free
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** Software License B, Version 1.1 (the "License"), the contents of this
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** file are subject only to the provisions of the License. You may not use
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** this file except in compliance with the License. You may obtain a copy
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** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
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** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
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**
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** http://oss.sgi.com/projects/FreeB
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**
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** Note that, as provided in the License, the Software is distributed on an
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** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
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** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
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** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
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** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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**
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** Original Code. The Original Code is: OpenGL Sample Implementation,
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** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
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** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
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** Copyright in any portions created by third parties is as indicated
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** elsewhere herein. All Rights Reserved.
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**
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** Additional Notice Provisions: The application programming interfaces
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** established by SGI in conjunction with the Original Code are The
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** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
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** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
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** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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** Window System(R) (Version 1.3), released October 19, 1998. This software
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** was created using the OpenGL(R) version 1.2.1 Sample Implementation
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** published by SGI, but has not been independently verified as being
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** compliant with the OpenGL(R) version 1.2.1 Specification.
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**
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*/
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#define NEED_REPLIES
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#define FONT_PCF
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#include "glxserver.h"
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#include <GL/glxtokens.h>
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#include <unpack.h>
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#include "g_disptab.h"
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#include <pixmapstr.h>
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#include <windowstr.h>
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#include "g_disptab_EXT.h"
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#include "glximports.h"
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#include "glxutil.h"
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#include "glxext.h"
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#include "GL/glx_ansic.h"
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/************************************************************************/
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static __GLimports imports = {
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__glXImpMalloc,
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__glXImpCalloc,
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__glXImpRealloc,
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__glXImpFree,
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__glXImpWarning,
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__glXImpFatal,
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__glXImpGetenv,
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__glXImpAtoi,
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__glXImpSprintf,
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__glXImpFopen,
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__glXImpFclose,
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__glXImpFprintf,
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__glXImpGetDrawablePrivate,
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NULL
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};
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/************************************************************************/
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/*
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** Create a GL context with the given properties.
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*/
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int __glXCreateContext(__GLXclientState *cl, GLbyte *pc)
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{
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ClientPtr client = cl->client;
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xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;
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VisualPtr pVisual;
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ScreenPtr pScreen;
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__GLXcontext *glxc, *shareglxc;
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__GLXvisualConfig *pGlxVisual;
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__GLXscreenInfo *pGlxScreen;
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__GLinterface *shareGC;
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GLXContextID gcId = req->context;
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GLXContextID shareList = req->shareList;
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VisualID visual = req->visual;
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GLuint screen = req->screen;
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GLboolean isDirect = req->isDirect;
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GLint i;
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/*
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** Check if screen exists.
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*/
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if (screen >= screenInfo.numScreens) {
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client->errorValue = screen;
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return BadValue;
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}
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pScreen = screenInfo.screens[screen];
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pGlxScreen = &__glXActiveScreens[screen];
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/*
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** Check if the visual ID is valid for this screen.
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*/
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pVisual = pScreen->visuals;
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for (i = 0; i < pScreen->numVisuals; i++, pVisual++) {
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if (pVisual->vid == visual) {
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break;
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}
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}
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if (i == pScreen->numVisuals) {
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client->errorValue = visual;
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return BadValue;
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}
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/*
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** Get configuration of the visual. This assumes that the
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** glXActiveScreens structure contains visual configurations only for the
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** subset of Visuals that are supported by this implementation of the
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** OpenGL.
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*/
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pGlxVisual = pGlxScreen->pGlxVisual;
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for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {
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if (pGlxVisual->vid == visual) {
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break;
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}
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}
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if (i == pGlxScreen->numVisuals) {
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/*
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** Visual not support on this screen by this OpenGL implementation.
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*/
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client->errorValue = visual;
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return BadValue;
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}
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/*
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** Find the display list space that we want to share.
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**
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** NOTE: In a multithreaded X server, we would need to keep a reference
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** count for each display list so that if one client detroyed a list that
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** another client was using, the list would not really be freed until it
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** was no longer in use. Since this sample implementation has no support
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** for multithreaded servers, we don't do this.
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*/
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if (shareList == None) {
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shareGC = 0;
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} else {
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shareglxc = (__GLXcontext *) LookupIDByType(shareList, __glXContextRes);
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if (!shareglxc) {
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client->errorValue = shareList;
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return __glXBadContext;
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}
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if (shareglxc->isDirect) {
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/*
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** NOTE: no support for sharing display lists between direct
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** contexts, even if they are in the same address space.
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*/
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#if 0
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/* Disabling this code seems to allow shared display lists
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* and texture objects to work. We'll leave it disabled for now.
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*/
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client->errorValue = shareList;
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return BadMatch;
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#endif
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} else {
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/*
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** Create an indirect context regardless of what the client asked
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** for; this way we can share display list space with shareList.
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*/
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isDirect = GL_FALSE;
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}
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shareGC = shareglxc->gc;
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}
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/*
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** Allocate memory for the new context
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*/
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glxc = (__GLXcontext *) __glXMalloc(sizeof(__GLXcontext));
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if (!glxc) {
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return BadAlloc;
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}
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__glXMemset(glxc, 0, sizeof(__GLXcontext));
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/*
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** Initially, setup the part of the context that could be used by
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** a GL core that needs windowing information (e.g., Mesa).
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*/
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glxc->pScreen = pScreen;
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glxc->pGlxScreen = pGlxScreen;
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glxc->pVisual = pVisual;
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glxc->pGlxVisual = pGlxVisual;
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if (!isDirect) {
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__GLcontextModes *modes;
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/*
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** first build __GLcontextModes from __GLXvisualConfig
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*/
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modes = (__GLcontextModes *) __glXMalloc(sizeof(__GLcontextModes));
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glxc->modes = modes;
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__glXFormatGLModes(modes, pGlxVisual);
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/*
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** Allocate a GL context
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*/
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imports.other = (void *)glxc;
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glxc->gc = (*pGlxScreen->createContext)(&imports, modes, shareGC);
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if (!glxc->gc) {
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__glXFree(glxc);
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client->errorValue = gcId;
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return BadAlloc;
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}
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} else {
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/*
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** Don't need local GL context for a direct context.
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*/
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glxc->gc = 0;
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}
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/*
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** Register this context as a resource.
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*/
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if (!AddResource(gcId, __glXContextRes, (pointer)glxc)) {
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if (!isDirect) {
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(*glxc->gc->exports.destroyContext)((__GLcontext *)glxc->gc);
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}
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__glXFree(glxc);
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client->errorValue = gcId;
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return BadAlloc;
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}
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/*
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** Finally, now that everything is working, setup the rest of the
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** context.
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*/
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glxc->id = gcId;
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glxc->share_id = shareList;
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glxc->idExists = GL_TRUE;
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glxc->isCurrent = GL_FALSE;
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glxc->isDirect = isDirect;
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glxc->renderMode = GL_RENDER;
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return Success;
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}
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/*
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** Destroy a GL context as an X resource.
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*/
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int __glXDestroyContext(__GLXclientState *cl, GLbyte *pc)
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{
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ClientPtr client = cl->client;
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xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;
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GLXContextID gcId = req->context;
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__GLXcontext *glxc;
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glxc = (__GLXcontext *) LookupIDByType(gcId, __glXContextRes);
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if (glxc) {
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/*
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** Just free the resource; don't actually destroy the context,
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** because it might be in use. The
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** destroy method will be called by the resource destruction routine
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** if necessary.
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*/
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FreeResourceByType(gcId, __glXContextRes, FALSE);
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return Success;
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} else {
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client->errorValue = gcId;
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return __glXBadContext;
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}
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}
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/*****************************************************************************/
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/*
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** For each client, the server keeps a table of all the contexts that are
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** current for that client (each thread of a client may have its own current
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** context). These routines add, change, and lookup contexts in the table.
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*/
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/*
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** Add a current context, and return the tag that will be used to refer to it.
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*/
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static int AddCurrentContext(__GLXclientState *cl, __GLXcontext *glxc)
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{
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int i;
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int num = cl->numCurrentContexts;
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__GLXcontext **table = cl->currentContexts;
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if (!glxc) return -1;
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/*
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** Try to find an empty slot and use it.
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*/
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for (i=0; i < num; i++) {
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if (!table[i]) {
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table[i] = glxc;
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return i+1;
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}
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}
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/*
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** Didn't find a free slot, so we'll have to grow the table.
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*/
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if (!num) {
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table = (__GLXcontext **) __glXMalloc(sizeof(__GLXcontext *));
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} else {
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table = (__GLXcontext **) __glXRealloc(table,
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(num+1)*sizeof(__GLXcontext *));
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}
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table[num] = glxc;
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cl->currentContexts = table;
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cl->numCurrentContexts++;
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return num+1;
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}
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/*
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** Given a tag, change the current context for the corresponding entry.
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*/
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static void ChangeCurrentContext(__GLXclientState *cl, __GLXcontext *glxc,
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GLXContextTag tag)
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{
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__GLXcontext **table = cl->currentContexts;
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table[tag-1] = glxc;
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}
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|
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/*
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** For this implementation we have chosen to simply use the index of the
|
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** context's entry in the table as the context tag. A tag must be greater
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** than 0.
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*/
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__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag)
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{
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int num = cl->numCurrentContexts;
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if (tag < 1 || tag > num) {
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return 0;
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} else {
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return cl->currentContexts[tag-1];
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}
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}
|
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|
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/*****************************************************************************/
|
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|
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static void StopUsingContext(__GLXcontext *glxc)
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{
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if (glxc) {
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if (glxc == __glXLastContext) {
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/* Tell server GL library */
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__glXLastContext = 0;
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}
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glxc->isCurrent = GL_FALSE;
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if (!glxc->idExists) {
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__glXFreeContext(glxc);
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}
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}
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}
|
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|
|
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static void StartUsingContext(__GLXclientState *cl, __GLXcontext *glxc)
|
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{
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glxc->isCurrent = GL_TRUE;
|
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}
|
||
|
|
||
|
/*****************************************************************************/
|
||
|
/*
|
||
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** Make an OpenGL context and drawable current.
|
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|
*/
|
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int __glXMakeCurrent(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
DrawablePtr pDraw;
|
||
|
xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;
|
||
|
xGLXMakeCurrentReply reply;
|
||
|
GLXDrawable drawId = req->drawable;
|
||
|
GLXContextID contextId = req->context;
|
||
|
__GLXpixmap *pGlxPixmap = 0;
|
||
|
__GLXcontext *glxc, *prevglxc;
|
||
|
__GLinterface *gc, *prevgc;
|
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|
__GLXdrawablePrivate *glxPriv = NULL;
|
||
|
GLXContextTag tag = req->oldContextTag;
|
||
|
GLint error;
|
||
|
|
||
|
/*
|
||
|
** If one is None and the other isn't, it's a bad match.
|
||
|
*/
|
||
|
if ((drawId == None && contextId != None) ||
|
||
|
(drawId != None && contextId == None)) {
|
||
|
return BadMatch;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Lookup old context. If we have one, it must be in a usable state.
|
||
|
*/
|
||
|
if (tag != 0) {
|
||
|
prevglxc = __glXLookupContextByTag(cl, tag);
|
||
|
if (!prevglxc) {
|
||
|
/*
|
||
|
** Tag for previous context is invalid.
|
||
|
*/
|
||
|
return __glXBadContextTag;
|
||
|
}
|
||
|
if (prevglxc->renderMode != GL_RENDER) {
|
||
|
/* Oops. Not in render mode render. */
|
||
|
client->errorValue = prevglxc->id;
|
||
|
return __glXBadContextState;
|
||
|
}
|
||
|
prevgc = prevglxc->gc;
|
||
|
} else {
|
||
|
prevglxc = 0;
|
||
|
prevgc = 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Lookup new context. It must not be current for someone else.
|
||
|
*/
|
||
|
if (contextId != None) {
|
||
|
glxc = (__GLXcontext *) LookupIDByType(contextId, __glXContextRes);
|
||
|
if (!glxc) {
|
||
|
client->errorValue = contextId;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
if ((glxc != prevglxc) && glxc->isCurrent) {
|
||
|
/* Context is current to somebody else */
|
||
|
return BadAccess;
|
||
|
}
|
||
|
gc = glxc->gc;
|
||
|
} else {
|
||
|
/* Switching to no context. Ignore new drawable. */
|
||
|
glxc = 0;
|
||
|
gc = 0;
|
||
|
}
|
||
|
|
||
|
if (drawId != None) {
|
||
|
pDraw = (DrawablePtr) LookupDrawable(drawId, client);
|
||
|
if (pDraw) {
|
||
|
if (pDraw->type == DRAWABLE_WINDOW) {
|
||
|
/*
|
||
|
** Drawable is an X Window.
|
||
|
*/
|
||
|
WindowPtr pWin = (WindowPtr)pDraw;
|
||
|
VisualID vid = wVisual(pWin);
|
||
|
|
||
|
/*
|
||
|
** Check if window and context are similar.
|
||
|
*/
|
||
|
if ((vid != glxc->pVisual->vid) ||
|
||
|
(pWin->drawable.pScreen != glxc->pScreen)) {
|
||
|
client->errorValue = drawId;
|
||
|
return BadMatch;
|
||
|
}
|
||
|
|
||
|
} else {
|
||
|
/*
|
||
|
** An X Pixmap is not allowed as a parameter (a GLX Pixmap
|
||
|
** is, but it must first be created with glxCreateGLXPixmap).
|
||
|
*/
|
||
|
client->errorValue = drawId;
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
} else {
|
||
|
pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
|
||
|
__glXPixmapRes);
|
||
|
if (pGlxPixmap) {
|
||
|
/*
|
||
|
** Check if pixmap and context are similar.
|
||
|
*/
|
||
|
if (pGlxPixmap->pScreen != glxc->pScreen ||
|
||
|
pGlxPixmap->pGlxVisual != glxc->pGlxVisual) {
|
||
|
client->errorValue = drawId;
|
||
|
return BadMatch;
|
||
|
}
|
||
|
pDraw = pGlxPixmap->pDraw;
|
||
|
|
||
|
} else {
|
||
|
/*
|
||
|
** Drawable is neither a Window nor a GLXPixmap.
|
||
|
*/
|
||
|
client->errorValue = drawId;
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
}
|
||
|
} else {
|
||
|
pDraw = 0;
|
||
|
}
|
||
|
|
||
|
/* get the drawable private */
|
||
|
if (pDraw) {
|
||
|
glxPriv = __glXGetDrawablePrivate(pDraw, drawId, glxc->modes);
|
||
|
if (glxPriv == NULL) {
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (prevglxc) {
|
||
|
/*
|
||
|
** Flush the previous context if needed.
|
||
|
*/
|
||
|
if (__GLX_HAS_UNFLUSHED_CMDS(prevglxc)) {
|
||
|
if (__glXForceCurrent(cl, tag, (int *)&error)) {
|
||
|
glFlush();
|
||
|
__GLX_NOTE_FLUSHED_CMDS(prevglxc);
|
||
|
} else {
|
||
|
return error;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Make the previous context not current.
|
||
|
*/
|
||
|
if (!(*prevgc->exports.loseCurrent)((__GLcontext *)prevgc)) {
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
__glXDeassociateContext(prevglxc, prevglxc->glxPriv);
|
||
|
}
|
||
|
|
||
|
if ((glxc != 0) && !glxc->isDirect) {
|
||
|
|
||
|
glxc->glxPriv = glxPriv;
|
||
|
__glXCacheDrawableSize(glxPriv);
|
||
|
|
||
|
/* make the context current */
|
||
|
if (!(*gc->exports.makeCurrent)((__GLcontext *)gc, &glxPriv->glPriv)) {
|
||
|
glxc->glxPriv = NULL;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
|
||
|
/* resize the buffers */
|
||
|
if (!__glXResizeDrawableBuffers(glxPriv)) {
|
||
|
/* could not do initial resize. make current failed */
|
||
|
(*gc->exports.loseCurrent)((__GLcontext *)gc);
|
||
|
glxc->glxPriv = NULL;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
|
||
|
glxc->isCurrent = GL_TRUE;
|
||
|
__glXAssociateContext(glxc, glxPriv);
|
||
|
assert(glxPriv->glxc == glxc);
|
||
|
}
|
||
|
|
||
|
if (prevglxc) {
|
||
|
if (prevglxc->pGlxPixmap) {
|
||
|
/*
|
||
|
** The previous drawable was a glx pixmap, release it.
|
||
|
*/
|
||
|
prevglxc->pGlxPixmap->refcnt--;
|
||
|
if (!prevglxc->pGlxPixmap->idExists &&
|
||
|
!prevglxc->pGlxPixmap->refcnt) {
|
||
|
PixmapPtr pPixmap = (PixmapPtr) prevglxc->pGlxPixmap->pDraw;
|
||
|
/*
|
||
|
** The DestroyPixmap routine should decrement the
|
||
|
** refcount of the X pixmap and free only if it's zero.
|
||
|
*/
|
||
|
(*prevglxc->pGlxPixmap->pScreen->DestroyPixmap)(pPixmap);
|
||
|
__glXFree(prevglxc->pGlxPixmap);
|
||
|
}
|
||
|
prevglxc->pGlxPixmap = 0;
|
||
|
}
|
||
|
ChangeCurrentContext(cl, glxc, tag);
|
||
|
StopUsingContext(prevglxc);
|
||
|
} else {
|
||
|
tag = AddCurrentContext(cl, glxc);
|
||
|
}
|
||
|
if (glxc) {
|
||
|
if (pGlxPixmap) {
|
||
|
pGlxPixmap->refcnt++;
|
||
|
glxc->pGlxPixmap = pGlxPixmap;
|
||
|
}
|
||
|
StartUsingContext(cl, glxc);
|
||
|
reply.contextTag = tag;
|
||
|
} else {
|
||
|
reply.contextTag = 0;
|
||
|
}
|
||
|
reply.length = 0;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
|
||
|
if (client->swapped) {
|
||
|
__glXSwapMakeCurrentReply(client, &reply);
|
||
|
} else {
|
||
|
WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)&reply);
|
||
|
}
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXIsDirect(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;
|
||
|
xGLXIsDirectReply reply;
|
||
|
__GLXcontext *glxc;
|
||
|
|
||
|
/*
|
||
|
** Find the GL context.
|
||
|
*/
|
||
|
glxc = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);
|
||
|
if (!glxc) {
|
||
|
client->errorValue = req->context;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
|
||
|
reply.isDirect = glxc->isDirect;
|
||
|
reply.length = 0;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
|
||
|
if (client->swapped) {
|
||
|
__glXSwapIsDirectReply(client, &reply);
|
||
|
} else {
|
||
|
WriteToClient(client, sz_xGLXIsDirectReply, (char *)&reply);
|
||
|
}
|
||
|
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXQueryVersion(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc;
|
||
|
xGLXQueryVersionReply reply;
|
||
|
GLuint major, minor;
|
||
|
|
||
|
major = req->majorVersion;
|
||
|
minor = req->minorVersion;
|
||
|
|
||
|
/*
|
||
|
** Server should take into consideration the version numbers sent by the
|
||
|
** client if it wants to work with older clients; however, in this
|
||
|
** implementation the server just returns its version number.
|
||
|
*/
|
||
|
reply.majorVersion = GLX_SERVER_MAJOR_VERSION;
|
||
|
reply.minorVersion = GLX_SERVER_MINOR_VERSION;
|
||
|
reply.length = 0;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
|
||
|
if (client->swapped) {
|
||
|
__glXSwapQueryVersionReply(client, &reply);
|
||
|
} else {
|
||
|
WriteToClient(client, sz_xGLXQueryVersionReply, (char *)&reply);
|
||
|
}
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXWaitGL(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;
|
||
|
int error;
|
||
|
|
||
|
if (!__glXForceCurrent(cl, req->contextTag, &error)) {
|
||
|
return error;
|
||
|
}
|
||
|
glFinish();
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXWaitX(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXWaitXReq *req = (xGLXWaitXReq *)pc;
|
||
|
int error;
|
||
|
|
||
|
if (!__glXForceCurrent(cl, req->contextTag, &error)) {
|
||
|
return error;
|
||
|
}
|
||
|
/*
|
||
|
** In a multithreaded server that had separate X and GL threads, we would
|
||
|
** have to wait for the X thread to finish before returning. As it stands,
|
||
|
** this sample implementation only supports singlethreaded servers, and
|
||
|
** nothing needs to be done here.
|
||
|
*/
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXCopyContext(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc;
|
||
|
GLXContextID source = req->source;
|
||
|
GLXContextID dest = req->dest;
|
||
|
GLXContextTag tag = req->contextTag;
|
||
|
unsigned long mask = req->mask;
|
||
|
__GLXcontext *src, *dst;
|
||
|
int error;
|
||
|
|
||
|
/*
|
||
|
** Check that each context exists.
|
||
|
*/
|
||
|
src = (__GLXcontext *) LookupIDByType(source, __glXContextRes);
|
||
|
if (!src) {
|
||
|
client->errorValue = source;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
dst = (__GLXcontext *) LookupIDByType(dest, __glXContextRes);
|
||
|
if (!dst) {
|
||
|
client->errorValue = dest;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** They must be in the same address space, and same screen.
|
||
|
** NOTE: no support for direct rendering contexts here.
|
||
|
*/
|
||
|
if (src->isDirect || dst->isDirect ||
|
||
|
(src->pGlxScreen != dst->pGlxScreen)) {
|
||
|
client->errorValue = source;
|
||
|
return BadMatch;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** The destination context must not be current for any client.
|
||
|
*/
|
||
|
if (dst->isCurrent) {
|
||
|
client->errorValue = dest;
|
||
|
return BadAccess;
|
||
|
}
|
||
|
|
||
|
if (tag) {
|
||
|
__GLXcontext *tagcx = __glXLookupContextByTag(cl, tag);
|
||
|
|
||
|
if (!tagcx) {
|
||
|
return __glXBadContextTag;
|
||
|
}
|
||
|
if (tagcx != src) {
|
||
|
/*
|
||
|
** This would be caused by a faulty implementation of the client
|
||
|
** library.
|
||
|
*/
|
||
|
return BadMatch;
|
||
|
}
|
||
|
/*
|
||
|
** In this case, glXCopyContext is in both GL and X streams, in terms
|
||
|
** of sequentiality.
|
||
|
*/
|
||
|
if (__glXForceCurrent(cl, tag, &error)) {
|
||
|
/*
|
||
|
** Do whatever is needed to make sure that all preceding requests
|
||
|
** in both streams are completed before the copy is executed.
|
||
|
*/
|
||
|
glFinish();
|
||
|
__GLX_NOTE_FLUSHED_CMDS(tagcx);
|
||
|
} else {
|
||
|
return error;
|
||
|
}
|
||
|
}
|
||
|
/*
|
||
|
** Issue copy. The only reason for failure is a bad mask.
|
||
|
*/
|
||
|
if (!(*dst->gc->exports.copyContext)((__GLcontext *)dst->gc,
|
||
|
(__GLcontext *)src->gc,
|
||
|
mask)) {
|
||
|
client->errorValue = mask;
|
||
|
return BadValue;
|
||
|
}
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXGetVisualConfigs(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;
|
||
|
xGLXGetVisualConfigsReply reply;
|
||
|
__GLXscreenInfo *pGlxScreen;
|
||
|
__GLXvisualConfig *pGlxVisual;
|
||
|
CARD32 buf[__GLX_TOTAL_CONFIG];
|
||
|
unsigned int screen;
|
||
|
int i, p;
|
||
|
|
||
|
screen = req->screen;
|
||
|
if (screen >= screenInfo.numScreens) {
|
||
|
/* The client library must send a valid screen number. */
|
||
|
client->errorValue = screen;
|
||
|
return BadValue;
|
||
|
}
|
||
|
pGlxScreen = &__glXActiveScreens[screen];
|
||
|
|
||
|
reply.numVisuals = pGlxScreen->numUsableVisuals;
|
||
|
reply.numProps = __GLX_TOTAL_CONFIG;
|
||
|
reply.length = (pGlxScreen->numUsableVisuals * __GLX_SIZE_CARD32 *
|
||
|
__GLX_TOTAL_CONFIG) >> 2;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
|
||
|
WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply);
|
||
|
|
||
|
for (i=0; i < pGlxScreen->numVisuals; i++) {
|
||
|
pGlxVisual = &pGlxScreen->pGlxVisual[i];
|
||
|
if (pGlxVisual->vid == 0) {
|
||
|
/* not a usable visual */
|
||
|
continue;
|
||
|
}
|
||
|
p = 0;
|
||
|
buf[p++] = pGlxVisual->vid;
|
||
|
buf[p++] = pGlxVisual->class;
|
||
|
buf[p++] = pGlxVisual->rgba;
|
||
|
|
||
|
buf[p++] = pGlxVisual->redSize;
|
||
|
buf[p++] = pGlxVisual->greenSize;
|
||
|
buf[p++] = pGlxVisual->blueSize;
|
||
|
buf[p++] = pGlxVisual->alphaSize;
|
||
|
buf[p++] = pGlxVisual->accumRedSize;
|
||
|
buf[p++] = pGlxVisual->accumGreenSize;
|
||
|
buf[p++] = pGlxVisual->accumBlueSize;
|
||
|
buf[p++] = pGlxVisual->accumAlphaSize;
|
||
|
|
||
|
buf[p++] = pGlxVisual->doubleBuffer;
|
||
|
buf[p++] = pGlxVisual->stereo;
|
||
|
|
||
|
buf[p++] = pGlxVisual->bufferSize;
|
||
|
buf[p++] = pGlxVisual->depthSize;
|
||
|
buf[p++] = pGlxVisual->stencilSize;
|
||
|
buf[p++] = pGlxVisual->auxBuffers;
|
||
|
buf[p++] = pGlxVisual->level;
|
||
|
/*
|
||
|
** Add token/value pairs for extensions.
|
||
|
*/
|
||
|
buf[p++] = GLX_VISUAL_CAVEAT_EXT;
|
||
|
buf[p++] = pGlxVisual->visualRating;
|
||
|
buf[p++] = GLX_TRANSPARENT_TYPE_EXT;
|
||
|
buf[p++] = pGlxVisual->transparentPixel;
|
||
|
buf[p++] = GLX_TRANSPARENT_RED_VALUE_EXT;
|
||
|
buf[p++] = pGlxVisual->transparentRed;
|
||
|
buf[p++] = GLX_TRANSPARENT_GREEN_VALUE_EXT;
|
||
|
buf[p++] = pGlxVisual->transparentGreen;
|
||
|
buf[p++] = GLX_TRANSPARENT_BLUE_VALUE_EXT;
|
||
|
buf[p++] = pGlxVisual->transparentBlue;
|
||
|
buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE_EXT;
|
||
|
buf[p++] = pGlxVisual->transparentAlpha;
|
||
|
buf[p++] = GLX_TRANSPARENT_INDEX_VALUE_EXT;
|
||
|
buf[p++] = pGlxVisual->transparentIndex;
|
||
|
|
||
|
WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG,
|
||
|
(char *)buf);
|
||
|
}
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Create a GLX Pixmap from an X Pixmap.
|
||
|
*/
|
||
|
int __glXCreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;
|
||
|
VisualID visual = req->visual;
|
||
|
GLuint screenNum = req->screen;
|
||
|
XID pixmapId = req->pixmap;
|
||
|
XID glxpixmapId = req->glxpixmap;
|
||
|
DrawablePtr pDraw;
|
||
|
ScreenPtr pScreen;
|
||
|
VisualPtr pVisual;
|
||
|
__GLXpixmap *pGlxPixmap;
|
||
|
__GLXscreenInfo *pGlxScreen;
|
||
|
__GLXvisualConfig *pGlxVisual;
|
||
|
int i;
|
||
|
|
||
|
pDraw = (DrawablePtr) LookupDrawable(pixmapId, client);
|
||
|
if (!pDraw || pDraw->type != DRAWABLE_PIXMAP) {
|
||
|
client->errorValue = pixmapId;
|
||
|
return BadPixmap;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Check if screen of visual matches screen of pixmap.
|
||
|
*/
|
||
|
pScreen = pDraw->pScreen;
|
||
|
if (screenNum != pScreen->myNum) {
|
||
|
return BadMatch;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Find the VisualRec for this visual.
|
||
|
*/
|
||
|
pVisual = pScreen->visuals;
|
||
|
for (i=0; i < pScreen->numVisuals; i++, pVisual++) {
|
||
|
if (pVisual->vid == visual) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (i == pScreen->numVisuals) {
|
||
|
client->errorValue = visual;
|
||
|
return BadValue;
|
||
|
}
|
||
|
/*
|
||
|
** Check if depth of visual matches depth of pixmap.
|
||
|
*/
|
||
|
if (pVisual->nplanes != pDraw->depth) {
|
||
|
return BadMatch;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Get configuration of the visual.
|
||
|
*/
|
||
|
pGlxScreen = &__glXActiveScreens[screenNum];
|
||
|
pGlxVisual = pGlxScreen->pGlxVisual;
|
||
|
for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {
|
||
|
if (pGlxVisual->vid == visual) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (i == pGlxScreen->numVisuals) {
|
||
|
/*
|
||
|
** Visual not support on this screen by this OpenGL implementation.
|
||
|
*/
|
||
|
client->errorValue = visual;
|
||
|
return BadValue;
|
||
|
}
|
||
|
|
||
|
pGlxPixmap = (__GLXpixmap *) __glXMalloc(sizeof(__GLXpixmap));
|
||
|
if (!pGlxPixmap) {
|
||
|
return BadAlloc;
|
||
|
}
|
||
|
if (!(AddResource(glxpixmapId, __glXPixmapRes, pGlxPixmap))) {
|
||
|
return BadAlloc;
|
||
|
}
|
||
|
pGlxPixmap->pDraw = pDraw;
|
||
|
pGlxPixmap->pGlxScreen = pGlxScreen;
|
||
|
pGlxPixmap->pGlxVisual = pGlxVisual;
|
||
|
pGlxPixmap->pScreen = pScreen;
|
||
|
pGlxPixmap->idExists = True;
|
||
|
pGlxPixmap->refcnt = 0;
|
||
|
|
||
|
/*
|
||
|
** Bump the ref count on the X pixmap so it won't disappear.
|
||
|
*/
|
||
|
((PixmapPtr) pDraw)->refcnt++;
|
||
|
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXDestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;
|
||
|
XID glxpixmap = req->glxpixmap;
|
||
|
|
||
|
/*
|
||
|
** Check if it's a valid GLX pixmap.
|
||
|
*/
|
||
|
if (!LookupIDByType(glxpixmap, __glXPixmapRes)) {
|
||
|
client->errorValue = glxpixmap;
|
||
|
return __glXBadPixmap;
|
||
|
}
|
||
|
FreeResource(glxpixmap, FALSE);
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
/*****************************************************************************/
|
||
|
|
||
|
/*
|
||
|
** NOTE: There is no portable implementation for swap buffers as of
|
||
|
** this time that is of value. Consequently, this code must be
|
||
|
** implemented by somebody other than SGI.
|
||
|
*/
|
||
|
int __glXSwapBuffers(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
DrawablePtr pDraw;
|
||
|
xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;
|
||
|
GLXContextTag tag = req->contextTag;
|
||
|
XID drawId = req->drawable;
|
||
|
__GLXpixmap *pGlxPixmap;
|
||
|
__GLXcontext *glxc = NULL;
|
||
|
int error;
|
||
|
|
||
|
/*
|
||
|
** Check that the GLX drawable is valid.
|
||
|
*/
|
||
|
pDraw = (DrawablePtr) LookupDrawable(drawId, client);
|
||
|
if (pDraw) {
|
||
|
if (pDraw->type == DRAWABLE_WINDOW) {
|
||
|
/*
|
||
|
** Drawable is an X window.
|
||
|
*/
|
||
|
} else {
|
||
|
/*
|
||
|
** Drawable is an X pixmap, which is not allowed.
|
||
|
*/
|
||
|
client->errorValue = drawId;
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
} else {
|
||
|
pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
|
||
|
__glXPixmapRes);
|
||
|
if (pGlxPixmap) {
|
||
|
/*
|
||
|
** Drawable is a GLX pixmap.
|
||
|
*/
|
||
|
} else {
|
||
|
/*
|
||
|
** Drawable is neither a X window nor a GLX pixmap.
|
||
|
*/
|
||
|
client->errorValue = drawId;
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (tag) {
|
||
|
glxc = __glXLookupContextByTag(cl, tag);
|
||
|
if (!glxc) {
|
||
|
return __glXBadContextTag;
|
||
|
}
|
||
|
/*
|
||
|
** The calling thread is swapping its current drawable. In this case,
|
||
|
** glxSwapBuffers is in both GL and X streams, in terms of
|
||
|
** sequentiality.
|
||
|
*/
|
||
|
if (__glXForceCurrent(cl, tag, &error)) {
|
||
|
/*
|
||
|
** Do whatever is needed to make sure that all preceding requests
|
||
|
** in both streams are completed before the swap is executed.
|
||
|
*/
|
||
|
glFinish();
|
||
|
__GLX_NOTE_FLUSHED_CMDS(glxc);
|
||
|
} else {
|
||
|
return error;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (pDraw) {
|
||
|
__GLXdrawablePrivate *glxPriv;
|
||
|
|
||
|
if (glxc) {
|
||
|
glxPriv = __glXGetDrawablePrivate(pDraw, drawId, glxc->modes);
|
||
|
if (glxPriv == NULL) {
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
glxPriv = __glXFindDrawablePrivate(drawId);
|
||
|
if (glxPriv == NULL) {
|
||
|
/* This is a window we've never seen before, do nothing */
|
||
|
return Success;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if ((*glxPriv->swapBuffers)(glxPriv) == GL_FALSE) {
|
||
|
return __glXBadDrawable;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
|
||
|
int __glXQueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
__GLXcontext *ctx;
|
||
|
xGLXQueryContextInfoEXTReq *req;
|
||
|
xGLXQueryContextInfoEXTReply reply;
|
||
|
int nProps;
|
||
|
int *sendBuf, *pSendBuf;
|
||
|
int nReplyBytes;
|
||
|
|
||
|
req = (xGLXQueryContextInfoEXTReq *)pc;
|
||
|
ctx = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);
|
||
|
if (!ctx) {
|
||
|
client->errorValue = req->context;
|
||
|
return __glXBadContext;
|
||
|
}
|
||
|
|
||
|
nProps = 3;
|
||
|
reply.length = nProps << 1;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
reply.n = nProps;
|
||
|
|
||
|
nReplyBytes = reply.length << 2;
|
||
|
sendBuf = (int *)__glXMalloc((size_t)nReplyBytes);
|
||
|
if (sendBuf == NULL) {
|
||
|
return __glXBadContext; /* XXX: Is this correct? */
|
||
|
}
|
||
|
pSendBuf = sendBuf;
|
||
|
*pSendBuf++ = GLX_SHARE_CONTEXT_EXT;
|
||
|
*pSendBuf++ = (int)(ctx->share_id);
|
||
|
*pSendBuf++ = GLX_VISUAL_ID_EXT;
|
||
|
*pSendBuf++ = (int)(ctx->pVisual->vid);
|
||
|
*pSendBuf++ = GLX_SCREEN_EXT;
|
||
|
*pSendBuf++ = (int)(ctx->pScreen->myNum);
|
||
|
|
||
|
if (client->swapped) {
|
||
|
__glXSwapQueryContextInfoEXTReply(client, &reply, sendBuf);
|
||
|
} else {
|
||
|
WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)&reply);
|
||
|
WriteToClient(client, nReplyBytes, (char *)sendBuf);
|
||
|
}
|
||
|
__glXFree((char *)sendBuf);
|
||
|
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
|
||
|
/************************************************************************/
|
||
|
|
||
|
/*
|
||
|
** Render and Renderlarge are not in the GLX API. They are used by the GLX
|
||
|
** client library to send batches of GL rendering commands.
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
** Execute all the drawing commands in a request.
|
||
|
*/
|
||
|
int __glXRender(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXRenderReq *req;
|
||
|
ClientPtr client= cl->client;
|
||
|
int left, cmdlen, error;
|
||
|
int commandsDone;
|
||
|
CARD16 opcode;
|
||
|
__GLXrenderHeader *hdr;
|
||
|
__GLXcontext *glxc;
|
||
|
|
||
|
/*
|
||
|
** NOTE: much of this code also appears in the byteswapping version of this
|
||
|
** routine, __glXSwapRender(). Any changes made here should also be
|
||
|
** duplicated there.
|
||
|
*/
|
||
|
|
||
|
req = (xGLXRenderReq *) pc;
|
||
|
glxc = __glXForceCurrent(cl, req->contextTag, &error);
|
||
|
if (!glxc) {
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
commandsDone = 0;
|
||
|
pc += sz_xGLXRenderReq;
|
||
|
left = (req->length << 2) - sz_xGLXRenderReq;
|
||
|
while (left > 0) {
|
||
|
__GLXrenderSizeData *entry;
|
||
|
int extra;
|
||
|
void (* proc)(GLbyte *);
|
||
|
|
||
|
/*
|
||
|
** Verify that the header length and the overall length agree.
|
||
|
** Also, each command must be word aligned.
|
||
|
*/
|
||
|
hdr = (__GLXrenderHeader *) pc;
|
||
|
cmdlen = hdr->length;
|
||
|
opcode = hdr->opcode;
|
||
|
|
||
|
/*
|
||
|
** Check for core opcodes and grab entry data.
|
||
|
*/
|
||
|
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
|
||
|
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
|
||
|
entry = &__glXRenderSizeTable[opcode];
|
||
|
proc = __glXRenderTable[opcode];
|
||
|
#if __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT
|
||
|
} else if ( (opcode >= __GLX_MIN_RENDER_OPCODE_EXT) &&
|
||
|
(opcode <= __GLX_MAX_RENDER_OPCODE_EXT) ) {
|
||
|
entry =
|
||
|
&__glXRenderSizeTable_EXT[opcode -
|
||
|
__GLX_MIN_RENDER_OPCODE_EXT];
|
||
|
proc = __glXRenderTable_EXT[opcode -
|
||
|
__GLX_MIN_RENDER_OPCODE_EXT];
|
||
|
#endif /* __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT */
|
||
|
} else {
|
||
|
client->errorValue = commandsDone;
|
||
|
return __glXBadRenderRequest;
|
||
|
}
|
||
|
|
||
|
if (!entry->bytes) {
|
||
|
/* unused opcode */
|
||
|
client->errorValue = commandsDone;
|
||
|
return __glXBadRenderRequest;
|
||
|
}
|
||
|
if (entry->varsize) {
|
||
|
/* variable size command */
|
||
|
extra = (*entry->varsize)(pc + __GLX_RENDER_HDR_SIZE, False);
|
||
|
if (extra < 0) {
|
||
|
extra = 0;
|
||
|
}
|
||
|
if (cmdlen != __GLX_PAD(entry->bytes + extra)) {
|
||
|
return BadLength;
|
||
|
}
|
||
|
} else {
|
||
|
/* constant size command */
|
||
|
if (cmdlen != __GLX_PAD(entry->bytes)) {
|
||
|
return BadLength;
|
||
|
}
|
||
|
}
|
||
|
if (left < cmdlen) {
|
||
|
return BadLength;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Skip over the header and execute the command. We allow the
|
||
|
** caller to trash the command memory. This is useful especially
|
||
|
** for things that require double alignment - they can just shift
|
||
|
** the data towards lower memory (trashing the header) by 4 bytes
|
||
|
** and achieve the required alignment.
|
||
|
*/
|
||
|
(*proc)(pc + __GLX_RENDER_HDR_SIZE);
|
||
|
pc += cmdlen;
|
||
|
left -= cmdlen;
|
||
|
commandsDone++;
|
||
|
}
|
||
|
__GLX_NOTE_UNFLUSHED_CMDS(glxc);
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Execute a large rendering request (one that spans multiple X requests).
|
||
|
*/
|
||
|
int __glXRenderLarge(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXRenderLargeReq *req;
|
||
|
ClientPtr client= cl->client;
|
||
|
GLuint dataBytes;
|
||
|
void (*proc)(GLbyte *);
|
||
|
__GLXrenderLargeHeader *hdr;
|
||
|
__GLXcontext *glxc;
|
||
|
int error;
|
||
|
CARD16 opcode;
|
||
|
|
||
|
/*
|
||
|
** NOTE: much of this code also appears in the byteswapping version of this
|
||
|
** routine, __glXSwapRenderLarge(). Any changes made here should also be
|
||
|
** duplicated there.
|
||
|
*/
|
||
|
|
||
|
req = (xGLXRenderLargeReq *) pc;
|
||
|
glxc = __glXForceCurrent(cl, req->contextTag, &error);
|
||
|
if (!glxc) {
|
||
|
/* Reset in case this isn't 1st request. */
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
return error;
|
||
|
}
|
||
|
dataBytes = req->dataBytes;
|
||
|
|
||
|
/*
|
||
|
** Check the request length.
|
||
|
*/
|
||
|
if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) {
|
||
|
client->errorValue = req->length;
|
||
|
/* Reset in case this isn't 1st request. */
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
return BadLength;
|
||
|
}
|
||
|
pc += sz_xGLXRenderLargeReq;
|
||
|
|
||
|
if (cl->largeCmdRequestsSoFar == 0) {
|
||
|
__GLXrenderSizeData *entry;
|
||
|
int extra, cmdlen;
|
||
|
/*
|
||
|
** This is the first request of a multi request command.
|
||
|
** Make enough space in the buffer, then copy the entire request.
|
||
|
*/
|
||
|
if (req->requestNumber != 1) {
|
||
|
client->errorValue = req->requestNumber;
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
|
||
|
hdr = (__GLXrenderLargeHeader *) pc;
|
||
|
cmdlen = hdr->length;
|
||
|
opcode = hdr->opcode;
|
||
|
|
||
|
/*
|
||
|
** Check for core opcodes and grab entry data.
|
||
|
*/
|
||
|
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
|
||
|
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
|
||
|
entry = &__glXRenderSizeTable[opcode];
|
||
|
#if __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT
|
||
|
} else if ( (opcode >= __GLX_MIN_RENDER_OPCODE_EXT) &&
|
||
|
(opcode <= __GLX_MAX_RENDER_OPCODE_EXT) ) {
|
||
|
opcode -= __GLX_MIN_RENDER_OPCODE_EXT;
|
||
|
entry = &__glXRenderSizeTable_EXT[opcode];
|
||
|
#endif /* __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT */
|
||
|
} else {
|
||
|
client->errorValue = opcode;
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
|
||
|
if (!entry->bytes) {
|
||
|
/* unused opcode */
|
||
|
client->errorValue = opcode;
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
if (entry->varsize) {
|
||
|
/*
|
||
|
** If it's a variable-size command (a command whose length must
|
||
|
** be computed from its parameters), all the parameters needed
|
||
|
** will be in the 1st request, so it's okay to do this.
|
||
|
*/
|
||
|
extra = (*entry->varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE, False);
|
||
|
if (extra < 0) {
|
||
|
extra = 0;
|
||
|
}
|
||
|
/* large command's header is 4 bytes longer, so add 4 */
|
||
|
if (cmdlen != __GLX_PAD(entry->bytes + 4 + extra)) {
|
||
|
return BadLength;
|
||
|
}
|
||
|
} else {
|
||
|
/* constant size command */
|
||
|
if (cmdlen != __GLX_PAD(entry->bytes + 4)) {
|
||
|
return BadLength;
|
||
|
}
|
||
|
}
|
||
|
/*
|
||
|
** Make enough space in the buffer, then copy the entire request.
|
||
|
*/
|
||
|
if (cl->largeCmdBufSize < cmdlen) {
|
||
|
if (!cl->largeCmdBuf) {
|
||
|
cl->largeCmdBuf = (GLbyte *) __glXMalloc((size_t)cmdlen);
|
||
|
} else {
|
||
|
cl->largeCmdBuf = (GLbyte *) __glXRealloc(cl->largeCmdBuf,
|
||
|
(size_t)cmdlen);
|
||
|
}
|
||
|
if (!cl->largeCmdBuf) {
|
||
|
return BadAlloc;
|
||
|
}
|
||
|
cl->largeCmdBufSize = cmdlen;
|
||
|
}
|
||
|
__glXMemcpy(cl->largeCmdBuf, pc, dataBytes);
|
||
|
|
||
|
cl->largeCmdBytesSoFar = dataBytes;
|
||
|
cl->largeCmdBytesTotal = cmdlen;
|
||
|
cl->largeCmdRequestsSoFar = 1;
|
||
|
cl->largeCmdRequestsTotal = req->requestTotal;
|
||
|
return Success;
|
||
|
|
||
|
} else {
|
||
|
/*
|
||
|
** We are receiving subsequent (i.e. not the first) requests of a
|
||
|
** multi request command.
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
** Check the request number and the total request count.
|
||
|
*/
|
||
|
if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) {
|
||
|
client->errorValue = req->requestNumber;
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
if (req->requestTotal != cl->largeCmdRequestsTotal) {
|
||
|
client->errorValue = req->requestTotal;
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Check that we didn't get too much data.
|
||
|
*/
|
||
|
if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) {
|
||
|
client->errorValue = dataBytes;
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
__glXMemcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes);
|
||
|
cl->largeCmdBytesSoFar += dataBytes;
|
||
|
cl->largeCmdRequestsSoFar++;
|
||
|
|
||
|
if (req->requestNumber == cl->largeCmdRequestsTotal) {
|
||
|
/*
|
||
|
** This is the last request; it must have enough bytes to complete
|
||
|
** the command.
|
||
|
*/
|
||
|
/* NOTE: the two pad macros have been added below; they are needed
|
||
|
** because the client library pads the total byte count, but not
|
||
|
** the per-request byte counts. The Protocol Encoding says the
|
||
|
** total byte count should not be padded, so a proposal will be
|
||
|
** made to the ARB to relax the padding constraint on the total
|
||
|
** byte count, thus preserving backward compatibility. Meanwhile,
|
||
|
** the padding done below fixes a bug that did not allow
|
||
|
** large commands of odd sizes to be accepted by the server.
|
||
|
*/
|
||
|
if (__GLX_PAD(cl->largeCmdBytesSoFar) !=
|
||
|
__GLX_PAD(cl->largeCmdBytesTotal)) {
|
||
|
client->errorValue = dataBytes;
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf;
|
||
|
opcode = hdr->opcode;
|
||
|
|
||
|
/*
|
||
|
** Use the opcode to index into the procedure table.
|
||
|
*/
|
||
|
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
|
||
|
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
|
||
|
proc = __glXRenderTable[opcode];
|
||
|
#if __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT
|
||
|
} else if ( (opcode >= __GLX_MIN_RENDER_OPCODE_EXT) &&
|
||
|
(opcode <= __GLX_MAX_RENDER_OPCODE_EXT) ) {
|
||
|
opcode -= __GLX_MIN_RENDER_OPCODE_EXT;
|
||
|
proc = __glXRenderTable_EXT[opcode];
|
||
|
#endif /* __GLX_MAX_RENDER_OPCODE_EXT > __GLX_MIN_RENDER_OPCODE_EXT */
|
||
|
} else {
|
||
|
client->errorValue = opcode;
|
||
|
return __glXBadLargeRequest;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
** Skip over the header and execute the command.
|
||
|
*/
|
||
|
(*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE);
|
||
|
__GLX_NOTE_UNFLUSHED_CMDS(glxc);
|
||
|
|
||
|
/*
|
||
|
** Reset for the next RenderLarge series.
|
||
|
*/
|
||
|
__glXResetLargeCommandStatus(cl);
|
||
|
} else {
|
||
|
/*
|
||
|
** This is neither the first nor the last request.
|
||
|
*/
|
||
|
}
|
||
|
return Success;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
/************************************************************************/
|
||
|
|
||
|
/*
|
||
|
** No support is provided for the vendor-private requests other than
|
||
|
** allocating the entry points in the dispatch table.
|
||
|
*/
|
||
|
|
||
|
int __glXVendorPrivate(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXVendorPrivateReq *req;
|
||
|
GLint vendorcode;
|
||
|
|
||
|
req = (xGLXVendorPrivateReq *) pc;
|
||
|
vendorcode = req->vendorCode;
|
||
|
|
||
|
if ((vendorcode >= __GLX_MIN_VENDPRIV_OPCODE_EXT) &&
|
||
|
(vendorcode <= __GLX_MAX_VENDPRIV_OPCODE_EXT)) {
|
||
|
(*__glXVendorPrivTable_EXT[vendorcode-__GLX_MIN_VENDPRIV_OPCODE_EXT])
|
||
|
(cl, (GLbyte*)req);
|
||
|
return Success;
|
||
|
}
|
||
|
/*
|
||
|
** This sample implemention does not support any private requests.
|
||
|
*/
|
||
|
cl->client->errorValue = req->vendorCode;
|
||
|
return __glXUnsupportedPrivateRequest;
|
||
|
}
|
||
|
|
||
|
int __glXVendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXVendorPrivateWithReplyReq *req;
|
||
|
GLint vendorcode;
|
||
|
|
||
|
req = (xGLXVendorPrivateWithReplyReq *) pc;
|
||
|
vendorcode = req->vendorCode;
|
||
|
|
||
|
switch (vendorcode) {
|
||
|
case X_GLXvop_QueryContextInfoEXT:
|
||
|
return __glXQueryContextInfoEXT(cl, pc);
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if ((vendorcode >= __GLX_MIN_VENDPRIV_OPCODE_EXT) &&
|
||
|
(vendorcode <= __GLX_MAX_VENDPRIV_OPCODE_EXT)) {
|
||
|
return
|
||
|
(*__glXVendorPrivTable_EXT[vendorcode-__GLX_MIN_VENDPRIV_OPCODE_EXT])
|
||
|
(cl, (GLbyte*)req);
|
||
|
}
|
||
|
|
||
|
cl->client->errorValue = vendorcode;
|
||
|
return __glXUnsupportedPrivateRequest;
|
||
|
}
|
||
|
|
||
|
int __glXQueryExtensionsString(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc;
|
||
|
xGLXQueryExtensionsStringReply reply;
|
||
|
GLuint screen;
|
||
|
size_t n, length;
|
||
|
const char *ptr;
|
||
|
char *buf;
|
||
|
|
||
|
screen = req->screen;
|
||
|
/*
|
||
|
** Check if screen exists.
|
||
|
*/
|
||
|
if (screen >= screenInfo.numScreens) {
|
||
|
client->errorValue = screen;
|
||
|
return BadValue;
|
||
|
}
|
||
|
|
||
|
ptr = __glXActiveScreens[screen].GLXextensions;
|
||
|
|
||
|
n = __glXStrlen(ptr) + 1;
|
||
|
length = __GLX_PAD(n) >> 2;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
reply.length = length;
|
||
|
reply.n = n;
|
||
|
|
||
|
if ((buf = (char *) __glXMalloc(length << 2)) == NULL) {
|
||
|
return BadAlloc;
|
||
|
}
|
||
|
__glXStrncpy(buf, ptr, n);
|
||
|
|
||
|
if (client->swapped) {
|
||
|
glxSwapQueryExtensionsStringReply(client, &reply, buf);
|
||
|
} else {
|
||
|
WriteToClient(client, sz_xGLXQueryExtensionsStringReply,(char *)&reply);
|
||
|
WriteToClient(client, (int)(length << 2), (char *)buf);
|
||
|
}
|
||
|
|
||
|
__glXFree(buf);
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXQueryServerString(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
ClientPtr client = cl->client;
|
||
|
xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc;
|
||
|
xGLXQueryServerStringReply reply;
|
||
|
int name;
|
||
|
GLuint screen;
|
||
|
size_t n, length;
|
||
|
const char *ptr;
|
||
|
char *buf;
|
||
|
|
||
|
name = req->name;
|
||
|
screen = req->screen;
|
||
|
/*
|
||
|
** Check if screen exists.
|
||
|
*/
|
||
|
if (screen >= screenInfo.numScreens) {
|
||
|
client->errorValue = screen;
|
||
|
return BadValue;
|
||
|
}
|
||
|
switch(name) {
|
||
|
case GLX_VENDOR:
|
||
|
ptr = __glXActiveScreens[screen].GLXvendor;
|
||
|
break;
|
||
|
case GLX_VERSION:
|
||
|
ptr = __glXActiveScreens[screen].GLXversion;
|
||
|
break;
|
||
|
case GLX_EXTENSIONS:
|
||
|
ptr = __glXActiveScreens[screen].GLXextensions;
|
||
|
break;
|
||
|
default:
|
||
|
return BadValue;
|
||
|
}
|
||
|
|
||
|
n = __glXStrlen(ptr) + 1;
|
||
|
length = __GLX_PAD(n) >> 2;
|
||
|
reply.type = X_Reply;
|
||
|
reply.sequenceNumber = client->sequence;
|
||
|
reply.length = length;
|
||
|
reply.n = n;
|
||
|
|
||
|
if ((buf = (char *) Xalloc(length << 2)) == NULL) {
|
||
|
return BadAlloc;
|
||
|
}
|
||
|
__glXStrncpy(buf, ptr, n);
|
||
|
|
||
|
if (client->swapped) {
|
||
|
glxSwapQueryServerStringReply(client, &reply, buf);
|
||
|
} else {
|
||
|
WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)&reply);
|
||
|
WriteToClient(client, (int)(length << 2), buf);
|
||
|
}
|
||
|
|
||
|
__glXFree(buf);
|
||
|
return Success;
|
||
|
}
|
||
|
|
||
|
int __glXClientInfo(__GLXclientState *cl, GLbyte *pc)
|
||
|
{
|
||
|
xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;
|
||
|
const char *buf;
|
||
|
|
||
|
cl->GLClientmajorVersion = req->major;
|
||
|
cl->GLClientminorVersion = req->minor;
|
||
|
if (cl->GLClientextensions) __glXFree(cl->GLClientextensions);
|
||
|
buf = (const char *)(req+1);
|
||
|
cl->GLClientextensions = __glXStrdup(buf);
|
||
|
|
||
|
return Success;
|
||
|
}
|
||
|
|