795 lines
24 KiB
C
795 lines
24 KiB
C
/* $XFree86: xc/programs/Xserver/GL/glx/glxcmdsswap.c,v 1.7 2002/01/14 22:47:08 tsi 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 "glxutil.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 <g_disptab_EXT.h>
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#include <pixmapstr.h>
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#include <windowstr.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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/*
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** Byteswapping versions of GLX commands. In most cases they just swap
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** the incoming arguments and then call the unswapped routine. For commands
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** that have replies, a separate swapping routine for the reply is provided;
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** it is called at the end of the unswapped routine.
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*/
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int __glXSwapCreateContext(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->context);
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__GLX_SWAP_INT(&req->visual);
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__GLX_SWAP_INT(&req->screen);
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__GLX_SWAP_INT(&req->shareList);
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return __glXCreateContext(cl, pc);
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}
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int __glXSwapDestroyContext(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->context);
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return __glXDestroyContext(cl, pc);
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}
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int __glXSwapMakeCurrent(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->drawable);
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__GLX_SWAP_INT(&req->context);
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__GLX_SWAP_INT(&req->oldContextTag);
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return __glXMakeCurrent(cl, pc);
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}
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int __glXSwapIsDirect(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->context);
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return __glXIsDirect(cl, pc);
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}
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int __glXSwapQueryVersion(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->majorVersion);
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__GLX_SWAP_INT(&req->minorVersion);
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return __glXQueryVersion(cl, pc);
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}
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int __glXSwapWaitGL(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXWaitGLReq *req = (xGLXWaitGLReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->contextTag);
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return __glXWaitGL(cl, pc);
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}
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int __glXSwapWaitX(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXWaitXReq *req = (xGLXWaitXReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->contextTag);
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return __glXWaitX(cl, pc);
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}
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int __glXSwapCopyContext(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->source);
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__GLX_SWAP_INT(&req->dest);
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__GLX_SWAP_INT(&req->mask);
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return __glXCopyContext(cl, pc);
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}
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int __glXSwapGetVisualConfigs(__GLXclientState *cl, GLbyte *pc)
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{
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ClientPtr client = cl->client;
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xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;
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xGLXGetVisualConfigsReply reply;
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__GLXscreenInfo *pGlxScreen;
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__GLXvisualConfig *pGlxVisual;
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CARD32 buf[__GLX_TOTAL_CONFIG];
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unsigned int screen;
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int i, p;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_DECLARE_SWAP_ARRAY_VARIABLES;
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__GLX_SWAP_INT(&req->screen);
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screen = req->screen;
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if (screen > screenInfo.numScreens) {
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/* The client library must send a valid screen number. */
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client->errorValue = screen;
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return BadValue;
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}
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pGlxScreen = &__glXActiveScreens[screen];
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reply.numVisuals = pGlxScreen->numUsableVisuals;
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reply.numProps = __GLX_TOTAL_CONFIG;
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reply.length = (pGlxScreen->numUsableVisuals * __GLX_SIZE_CARD32 *
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__GLX_TOTAL_CONFIG) >> 2;
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reply.type = X_Reply;
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reply.sequenceNumber = client->sequence;
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__GLX_SWAP_SHORT(&reply.sequenceNumber);
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__GLX_SWAP_INT(&reply.length);
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__GLX_SWAP_INT(&reply.numVisuals);
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__GLX_SWAP_INT(&reply.numProps);
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WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply);
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for (i=0; i < pGlxScreen->numVisuals; i++) {
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pGlxVisual = &pGlxScreen->pGlxVisual[i];
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if (pGlxVisual->vid == 0) {
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/* not a usable visual */
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continue;
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}
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p = 0;
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buf[p++] = pGlxVisual->vid;
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buf[p++] = pGlxVisual->class;
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buf[p++] = pGlxVisual->rgba;
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buf[p++] = pGlxVisual->redSize;
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buf[p++] = pGlxVisual->greenSize;
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buf[p++] = pGlxVisual->blueSize;
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buf[p++] = pGlxVisual->alphaSize;
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buf[p++] = pGlxVisual->accumRedSize;
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buf[p++] = pGlxVisual->accumGreenSize;
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buf[p++] = pGlxVisual->accumBlueSize;
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buf[p++] = pGlxVisual->accumAlphaSize;
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buf[p++] = pGlxVisual->doubleBuffer;
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buf[p++] = pGlxVisual->stereo;
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buf[p++] = pGlxVisual->bufferSize;
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buf[p++] = pGlxVisual->depthSize;
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buf[p++] = pGlxVisual->stencilSize;
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buf[p++] = pGlxVisual->auxBuffers;
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buf[p++] = pGlxVisual->level;
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/*
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** Add token/value pairs for extensions.
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*/
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buf[p++] = GLX_VISUAL_CAVEAT_EXT;
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buf[p++] = pGlxVisual->visualRating;
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buf[p++] = GLX_TRANSPARENT_TYPE_EXT;
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buf[p++] = pGlxVisual->transparentPixel;
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buf[p++] = GLX_TRANSPARENT_RED_VALUE_EXT;
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buf[p++] = pGlxVisual->transparentRed;
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buf[p++] = GLX_TRANSPARENT_GREEN_VALUE_EXT;
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buf[p++] = pGlxVisual->transparentGreen;
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buf[p++] = GLX_TRANSPARENT_BLUE_VALUE_EXT;
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buf[p++] = pGlxVisual->transparentBlue;
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buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE_EXT;
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buf[p++] = pGlxVisual->transparentAlpha;
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buf[p++] = GLX_TRANSPARENT_INDEX_VALUE_EXT;
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buf[p++] = pGlxVisual->transparentIndex;
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__GLX_SWAP_INT_ARRAY(buf, __GLX_TOTAL_CONFIG);
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WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG,
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(char *)buf);
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}
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return Success;
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}
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int __glXSwapCreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->screen);
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__GLX_SWAP_INT(&req->visual);
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__GLX_SWAP_INT(&req->pixmap);
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__GLX_SWAP_INT(&req->glxpixmap);
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return __glXCreateGLXPixmap(cl, pc);
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}
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int __glXSwapDestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->glxpixmap);
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return __glXDestroyGLXPixmap(cl, pc);
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}
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int __glXSwapSwapBuffers(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->contextTag);
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__GLX_SWAP_INT(&req->drawable);
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return __glXSwapBuffers(cl, pc);
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}
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int __glXSwapUseXFont(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXUseXFontReq *req = (xGLXUseXFontReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->contextTag);
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__GLX_SWAP_INT(&req->font);
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__GLX_SWAP_INT(&req->first);
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__GLX_SWAP_INT(&req->count);
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__GLX_SWAP_INT(&req->listBase);
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return __glXUseXFont(cl, pc);
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}
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int __glXSwapQueryExtensionsString(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXQueryExtensionsStringReq *req = NULL;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->screen);
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return __glXQueryExtensionsString(cl, pc);
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}
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int __glXSwapQueryServerString(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *)pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->screen);
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__GLX_SWAP_INT(&req->name);
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return __glXQueryServerString(cl, pc);
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}
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int __glXSwapClientInfo(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXClientInfoReq *req = (xGLXClientInfoReq *)pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->major);
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__GLX_SWAP_INT(&req->minor);
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__GLX_SWAP_INT(&req->numbytes);
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return __glXClientInfo(cl, pc);
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}
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int __glXSwapQueryContextInfoEXT(__GLXclientState *cl, char *pc)
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{
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xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->context);
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return __glXQueryContextInfoEXT(cl, (GLbyte *)pc);
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}
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/************************************************************************/
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/*
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** Swap replies.
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*/
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void __glXSwapMakeCurrentReply(ClientPtr client, xGLXMakeCurrentReply *reply)
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{
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&reply->sequenceNumber);
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__GLX_SWAP_INT(&reply->length);
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__GLX_SWAP_INT(&reply->contextTag);
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WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)reply);
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}
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void __glXSwapIsDirectReply(ClientPtr client, xGLXIsDirectReply *reply)
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{
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&reply->sequenceNumber);
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__GLX_SWAP_INT(&reply->length);
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WriteToClient(client, sz_xGLXIsDirectReply, (char *)reply);
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}
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void __glXSwapQueryVersionReply(ClientPtr client, xGLXQueryVersionReply *reply)
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{
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&reply->sequenceNumber);
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__GLX_SWAP_INT(&reply->length);
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__GLX_SWAP_INT(&reply->majorVersion);
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__GLX_SWAP_INT(&reply->minorVersion);
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WriteToClient(client, sz_xGLXQueryVersionReply, (char *)reply);
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}
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void glxSwapQueryExtensionsStringReply(ClientPtr client,
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xGLXQueryExtensionsStringReply *reply, char *buf)
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{
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int length = reply->length;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_DECLARE_SWAP_ARRAY_VARIABLES;
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__GLX_SWAP_SHORT(&reply->sequenceNumber);
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__GLX_SWAP_INT(&reply->length);
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__GLX_SWAP_INT(&reply->n);
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WriteToClient(client, sz_xGLXQueryExtensionsStringReply, (char *)reply);
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__GLX_SWAP_INT_ARRAY((int *)buf, length);
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WriteToClient(client, length << 2, buf);
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}
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void glxSwapQueryServerStringReply(ClientPtr client,
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xGLXQueryServerStringReply *reply, char *buf)
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{
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int length = reply->length;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_SWAP_SHORT(&reply->sequenceNumber);
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__GLX_SWAP_INT(&reply->length);
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__GLX_SWAP_INT(&reply->n);
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WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)reply);
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/** no swap is needed for an array of chars **/
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/* __GLX_SWAP_INT_ARRAY((int *)buf, length); */
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WriteToClient(client, length << 2, buf);
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}
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void __glXSwapQueryContextInfoEXTReply(ClientPtr client, xGLXQueryContextInfoEXTReply *reply, int *buf)
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{
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int length = reply->length;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_DECLARE_SWAP_ARRAY_VARIABLES;
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__GLX_SWAP_SHORT(&reply->sequenceNumber);
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__GLX_SWAP_INT(&reply->length);
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__GLX_SWAP_INT(&reply->n);
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WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)reply);
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__GLX_SWAP_INT_ARRAY((int *)buf, length);
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WriteToClient(client, length << 2, (char *)buf);
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}
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/************************************************************************/
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/*
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** Render and Renderlarge are not in the GLX API. They are used by the GLX
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** client library to send batches of GL rendering commands.
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*/
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int __glXSwapRender(__GLXclientState *cl, GLbyte *pc)
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{
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xGLXRenderReq *req;
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ClientPtr client= cl->client;
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int left, cmdlen, error;
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int commandsDone;
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CARD16 opcode;
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__GLXrenderHeader *hdr;
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__GLXcontext *cx;
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__GLX_DECLARE_SWAP_VARIABLES;
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/*
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** NOTE: much of this code also appears in the nonswapping version of this
|
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** routine, __glXRender(). Any changes made here should also be
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** duplicated there.
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*/
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req = (xGLXRenderReq *) pc;
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__GLX_SWAP_SHORT(&req->length);
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__GLX_SWAP_INT(&req->contextTag);
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cx = __glXForceCurrent(cl, req->contextTag, &error);
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if (!cx) {
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return error;
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}
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commandsDone = 0;
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pc += sz_xGLXRenderReq;
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left = (req->length << 2) - sz_xGLXRenderReq;
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while (left > 0) {
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__GLXrenderSizeData *entry;
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int extra;
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void (* proc)(GLbyte *);
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|
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/*
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|
** Verify that the header length and the overall length agree.
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|
** Also, each command must be word aligned.
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|
*/
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hdr = (__GLXrenderHeader *) pc;
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__GLX_SWAP_SHORT(&hdr->length);
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__GLX_SWAP_SHORT(&hdr->opcode);
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cmdlen = hdr->length;
|
|
opcode = hdr->opcode;
|
|
|
|
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
|
|
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
|
|
entry = &__glXRenderSizeTable[opcode];
|
|
proc = __glXSwapRenderTable[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) ) {
|
|
int index = opcode - __GLX_MIN_RENDER_OPCODE_EXT;
|
|
entry = &__glXRenderSizeTable_EXT[index];
|
|
proc = __glXSwapRenderTable_EXT[index];
|
|
#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, True);
|
|
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(cx);
|
|
return Success;
|
|
}
|
|
|
|
/*
|
|
** Execute a large rendering request (one that spans multiple X requests).
|
|
*/
|
|
int __glXSwapRenderLarge(__GLXclientState *cl, GLbyte *pc)
|
|
{
|
|
xGLXRenderLargeReq *req;
|
|
ClientPtr client= cl->client;
|
|
size_t dataBytes;
|
|
void (*proc)(GLbyte *);
|
|
__GLXrenderLargeHeader *hdr;
|
|
__GLXcontext *cx;
|
|
int error;
|
|
CARD16 opcode;
|
|
__GLX_DECLARE_SWAP_VARIABLES;
|
|
|
|
/*
|
|
** NOTE: much of this code also appears in the nonswapping version of this
|
|
** routine, __glXRenderLarge(). Any changes made here should also be
|
|
** duplicated there.
|
|
*/
|
|
|
|
req = (xGLXRenderLargeReq *) pc;
|
|
__GLX_SWAP_SHORT(&req->length);
|
|
__GLX_SWAP_INT(&req->contextTag);
|
|
__GLX_SWAP_INT(&req->dataBytes);
|
|
__GLX_SWAP_SHORT(&req->requestNumber);
|
|
__GLX_SWAP_SHORT(&req->requestTotal);
|
|
cx = __glXForceCurrent(cl, req->contextTag, &error);
|
|
if (!cx) {
|
|
/* 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;
|
|
size_t 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;
|
|
__GLX_SWAP_INT(&hdr->length);
|
|
__GLX_SWAP_INT(&hdr->opcode);
|
|
cmdlen = hdr->length;
|
|
opcode = hdr->opcode;
|
|
|
|
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
|
|
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
|
|
entry = &__glXRenderSizeTable[opcode];
|
|
proc = __glXSwapRenderTable[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) ) {
|
|
int index = opcode - __GLX_MIN_RENDER_OPCODE_EXT;
|
|
entry = &__glXRenderSizeTable_EXT[index];
|
|
proc = __glXSwapRenderTable_EXT[index];
|
|
#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, True);
|
|
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(cmdlen);
|
|
} else {
|
|
cl->largeCmdBuf = (GLbyte *) __glXRealloc(cl->largeCmdBuf, 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;
|
|
/*
|
|
** The opcode and length field in the header had already been
|
|
** swapped when the first request was received.
|
|
*/
|
|
|
|
/*
|
|
** Use the opcode to index into the procedure table.
|
|
*/
|
|
opcode = hdr->opcode;
|
|
if ( (opcode >= __GLX_MIN_RENDER_OPCODE) &&
|
|
(opcode <= __GLX_MAX_RENDER_OPCODE) ) {
|
|
proc = __glXSwapRenderTable[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) ) {
|
|
int index = opcode - __GLX_MIN_RENDER_OPCODE_EXT;
|
|
proc = __glXSwapRenderTable_EXT[index];
|
|
#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(cx);
|
|
|
|
/*
|
|
** 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 these entry points in the dispatch table.
|
|
*/
|
|
|
|
int __glXSwapVendorPrivate(__GLXclientState *cl, GLbyte *pc)
|
|
{
|
|
xGLXVendorPrivateReq *req;
|
|
GLint vendorcode;
|
|
|
|
__GLX_DECLARE_SWAP_VARIABLES;
|
|
|
|
req = (xGLXVendorPrivateReq *) pc;
|
|
__GLX_SWAP_SHORT(&req->length);
|
|
__GLX_SWAP_INT(&req->vendorCode);
|
|
|
|
vendorcode = req->vendorCode;
|
|
|
|
if ((vendorcode >= __GLX_MIN_VENDPRIV_OPCODE_EXT) &&
|
|
(vendorcode <= __GLX_MAX_VENDPRIV_OPCODE_EXT)) {
|
|
(*__glXSwapVendorPrivTable_EXT[vendorcode-__GLX_MIN_VENDPRIV_OPCODE_EXT])(cl, (GLbyte*)req);
|
|
return Success;
|
|
}
|
|
cl->client->errorValue = req->vendorCode;
|
|
return __glXUnsupportedPrivateRequest;
|
|
}
|
|
|
|
int __glXSwapVendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc)
|
|
{
|
|
xGLXVendorPrivateWithReplyReq *req;
|
|
GLint vendorcode;
|
|
|
|
__GLX_DECLARE_SWAP_VARIABLES;
|
|
|
|
req = (xGLXVendorPrivateWithReplyReq *) pc;
|
|
__GLX_SWAP_SHORT(&req->length);
|
|
__GLX_SWAP_INT(&req->vendorCode);
|
|
|
|
vendorcode = req->vendorCode;
|
|
|
|
if ((vendorcode >= __GLX_MIN_VENDPRIV_OPCODE_EXT) &&
|
|
(vendorcode <= __GLX_MAX_VENDPRIV_OPCODE_EXT)) {
|
|
return (*__glXSwapVendorPrivTable_EXT[vendorcode-__GLX_MIN_VENDPRIV_OPCODE_EXT])(cl, (GLbyte*)req);
|
|
}
|
|
cl->client->errorValue = req->vendorCode;
|
|
return __glXUnsupportedPrivateRequest;
|
|
}
|