/* $XFree86: xc/programs/Xserver/GL/glx/glxcmdsswap.c,v 1.9 2003/10/28 22:50:17 tsi Exp $ */ /* ** License Applicability. Except to the extent portions of this file are ** made subject to an alternative license as permitted in the SGI Free ** Software License B, Version 1.1 (the "License"), the contents of this ** file are subject only to the provisions of the License. You may not use ** this file except in compliance with the License. You may obtain a copy ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: ** ** http://oss.sgi.com/projects/FreeB ** ** Note that, as provided in the License, the Software is distributed on an ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. ** ** Original Code. The Original Code is: OpenGL Sample Implementation, ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. ** Copyright in any portions created by third parties is as indicated ** elsewhere herein. All Rights Reserved. ** ** Additional Notice Provisions: The application programming interfaces ** established by SGI in conjunction with the Original Code are The ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X ** Window System(R) (Version 1.3), released October 19, 1998. This software ** was created using the OpenGL(R) version 1.2.1 Sample Implementation ** published by SGI, but has not been independently verified as being ** compliant with the OpenGL(R) version 1.2.1 Specification. ** */ #define NEED_REPLIES #define FONT_PCF #include "glxserver.h" #include "glxutil.h" #include #include #include #include #include #include #include "glxext.h" #include "GL/glx_ansic.h" /************************************************************************/ /* ** Byteswapping versions of GLX commands. In most cases they just swap ** the incoming arguments and then call the unswapped routine. For commands ** that have replies, a separate swapping routine for the reply is provided; ** it is called at the end of the unswapped routine. */ int __glXSwapCreateContext(__GLXclientState *cl, GLbyte *pc) { xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->context); __GLX_SWAP_INT(&req->visual); __GLX_SWAP_INT(&req->screen); __GLX_SWAP_INT(&req->shareList); return __glXCreateContext(cl, pc); } int __glXSwapDestroyContext(__GLXclientState *cl, GLbyte *pc) { xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->context); return __glXDestroyContext(cl, pc); } int __glXSwapMakeCurrent(__GLXclientState *cl, GLbyte *pc) { xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->drawable); __GLX_SWAP_INT(&req->context); __GLX_SWAP_INT(&req->oldContextTag); return __glXMakeCurrent(cl, pc); } int __glXSwapMakeContextCurrent(__GLXclientState *cl, GLbyte *pc) { xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->drawable); __GLX_SWAP_INT(&req->readdrawable); __GLX_SWAP_INT(&req->context); __GLX_SWAP_INT(&req->oldContextTag); return __glXMakeContextCurrent(cl, pc); } int __glXSwapMakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc) { xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->drawable); __GLX_SWAP_INT(&req->readable); __GLX_SWAP_INT(&req->context); __GLX_SWAP_INT(&req->oldContextTag); return __glXMakeCurrentReadSGI(cl, pc); } int __glXSwapIsDirect(__GLXclientState *cl, GLbyte *pc) { xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->context); return __glXIsDirect(cl, pc); } int __glXSwapQueryVersion(__GLXclientState *cl, GLbyte *pc) { xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->majorVersion); __GLX_SWAP_INT(&req->minorVersion); return __glXQueryVersion(cl, pc); } int __glXSwapWaitGL(__GLXclientState *cl, GLbyte *pc) { xGLXWaitGLReq *req = (xGLXWaitGLReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->contextTag); return __glXWaitGL(cl, pc); } int __glXSwapWaitX(__GLXclientState *cl, GLbyte *pc) { xGLXWaitXReq *req = (xGLXWaitXReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->contextTag); return __glXWaitX(cl, pc); } int __glXSwapCopyContext(__GLXclientState *cl, GLbyte *pc) { xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->source); __GLX_SWAP_INT(&req->dest); __GLX_SWAP_INT(&req->mask); return __glXCopyContext(cl, pc); } int __glXSwapGetVisualConfigs(__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; __GLX_DECLARE_SWAP_VARIABLES; __GLX_DECLARE_SWAP_ARRAY_VARIABLES; __GLX_SWAP_INT(&req->screen); 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; __GLX_SWAP_SHORT(&reply.sequenceNumber); __GLX_SWAP_INT(&reply.length); __GLX_SWAP_INT(&reply.numVisuals); __GLX_SWAP_INT(&reply.numProps); 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; __GLX_SWAP_INT_ARRAY(buf, __GLX_TOTAL_CONFIG); WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG, (char *)buf); } return Success; } int __glXSwapCreateGLXPixmap(__GLXclientState *cl, GLbyte *pc) { xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->screen); __GLX_SWAP_INT(&req->visual); __GLX_SWAP_INT(&req->pixmap); __GLX_SWAP_INT(&req->glxpixmap); return __glXCreateGLXPixmap(cl, pc); } int __glXSwapDestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc) { xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->glxpixmap); return __glXDestroyGLXPixmap(cl, pc); } int __glXSwapSwapBuffers(__GLXclientState *cl, GLbyte *pc) { xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->contextTag); __GLX_SWAP_INT(&req->drawable); return __glXSwapBuffers(cl, pc); } int __glXSwapUseXFont(__GLXclientState *cl, GLbyte *pc) { xGLXUseXFontReq *req = (xGLXUseXFontReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->contextTag); __GLX_SWAP_INT(&req->font); __GLX_SWAP_INT(&req->first); __GLX_SWAP_INT(&req->count); __GLX_SWAP_INT(&req->listBase); return __glXUseXFont(cl, pc); } int __glXSwapQueryExtensionsString(__GLXclientState *cl, GLbyte *pc) { xGLXQueryExtensionsStringReq *req = NULL; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->screen); return __glXQueryExtensionsString(cl, pc); } int __glXSwapQueryServerString(__GLXclientState *cl, GLbyte *pc) { xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *)pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->screen); __GLX_SWAP_INT(&req->name); return __glXQueryServerString(cl, pc); } int __glXSwapClientInfo(__GLXclientState *cl, GLbyte *pc) { xGLXClientInfoReq *req = (xGLXClientInfoReq *)pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->major); __GLX_SWAP_INT(&req->minor); __GLX_SWAP_INT(&req->numbytes); return __glXClientInfo(cl, pc); } int __glXSwapQueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc) { xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->context); return __glXQueryContextInfoEXT(cl, pc); } /************************************************************************/ /* ** Swap replies. */ void __glXSwapMakeCurrentReply(ClientPtr client, xGLXMakeCurrentReply *reply) { __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&reply->sequenceNumber); __GLX_SWAP_INT(&reply->length); __GLX_SWAP_INT(&reply->contextTag); WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)reply); } void __glXSwapIsDirectReply(ClientPtr client, xGLXIsDirectReply *reply) { __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&reply->sequenceNumber); __GLX_SWAP_INT(&reply->length); WriteToClient(client, sz_xGLXIsDirectReply, (char *)reply); } void __glXSwapQueryVersionReply(ClientPtr client, xGLXQueryVersionReply *reply) { __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&reply->sequenceNumber); __GLX_SWAP_INT(&reply->length); __GLX_SWAP_INT(&reply->majorVersion); __GLX_SWAP_INT(&reply->minorVersion); WriteToClient(client, sz_xGLXQueryVersionReply, (char *)reply); } void glxSwapQueryExtensionsStringReply(ClientPtr client, xGLXQueryExtensionsStringReply *reply, char *buf) { int length = reply->length; __GLX_DECLARE_SWAP_VARIABLES; __GLX_DECLARE_SWAP_ARRAY_VARIABLES; __GLX_SWAP_SHORT(&reply->sequenceNumber); __GLX_SWAP_INT(&reply->length); __GLX_SWAP_INT(&reply->n); WriteToClient(client, sz_xGLXQueryExtensionsStringReply, (char *)reply); __GLX_SWAP_INT_ARRAY((int *)buf, length); WriteToClient(client, length << 2, buf); } void glxSwapQueryServerStringReply(ClientPtr client, xGLXQueryServerStringReply *reply, char *buf) { int length = reply->length; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_SHORT(&reply->sequenceNumber); __GLX_SWAP_INT(&reply->length); __GLX_SWAP_INT(&reply->n); WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)reply); /** no swap is needed for an array of chars **/ /* __GLX_SWAP_INT_ARRAY((int *)buf, length); */ WriteToClient(client, length << 2, buf); } void __glXSwapQueryContextInfoEXTReply(ClientPtr client, xGLXQueryContextInfoEXTReply *reply, int *buf) { int length = reply->length; __GLX_DECLARE_SWAP_VARIABLES; __GLX_DECLARE_SWAP_ARRAY_VARIABLES; __GLX_SWAP_SHORT(&reply->sequenceNumber); __GLX_SWAP_INT(&reply->length); __GLX_SWAP_INT(&reply->n); WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)reply); __GLX_SWAP_INT_ARRAY((int *)buf, length); WriteToClient(client, length << 2, (char *)buf); } /************************************************************************/ /* ** Render and Renderlarge are not in the GLX API. They are used by the GLX ** client library to send batches of GL rendering commands. */ int __glXSwapRender(__GLXclientState *cl, GLbyte *pc) { xGLXRenderReq *req; ClientPtr client= cl->client; int left, cmdlen, error; int commandsDone; CARD16 opcode; __GLXrenderHeader *hdr; __GLXcontext *cx; __GLX_DECLARE_SWAP_VARIABLES; /* ** NOTE: much of this code also appears in the nonswapping version of this ** routine, __glXRender(). Any changes made here should also be ** duplicated there. */ req = (xGLXRenderReq *) pc; __GLX_SWAP_SHORT(&req->length); __GLX_SWAP_INT(&req->contextTag); cx = __glXForceCurrent(cl, req->contextTag, &error); if (!cx) { 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; __GLX_SWAP_SHORT(&hdr->length); __GLX_SWAP_SHORT(&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 = 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; switch (vendorcode) { case X_GLXvop_QueryContextInfoEXT: return __glXSwapQueryContextInfoEXT(cl, pc); case X_GLXvop_MakeCurrentReadSGI: return __glXSwapMakeCurrentReadSGI(cl, pc); default: break; } 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; }