/* * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice including the dates of first publication and * either this permission notice or a reference to * http://oss.sgi.com/projects/FreeB/ * shall be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of Silicon Graphics, Inc. * shall not be used in advertising or otherwise to promote the sale, use or * other dealings in this Software without prior written authorization from * Silicon Graphics, Inc. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include "glxserver.h" #include "glxutil.h" #include "glxext.h" #include "indirect_dispatch.h" #include "unpack.h" #include "glapitable.h" #include "glapi.h" #include "glthread.h" #include "dispatch.h" int __glXDispSwap_FeedbackBuffer(__GLXclientState * cl, GLbyte * pc) { GLsizei size; GLenum type; __GLX_DECLARE_SWAP_VARIABLES; __GLXcontext *cx; int error; __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); if (!cx) { return error; } pc += __GLX_SINGLE_HDR_SIZE; __GLX_SWAP_INT(pc + 0); __GLX_SWAP_INT(pc + 4); size = *(GLsizei *) (pc + 0); type = *(GLenum *) (pc + 4); if (cx->feedbackBufSize < size) { cx->feedbackBuf = (GLfloat *) realloc(cx->feedbackBuf, (size_t) size * __GLX_SIZE_FLOAT32); if (!cx->feedbackBuf) { cl->client->errorValue = size; return BadAlloc; } cx->feedbackBufSize = size; } CALL_FeedbackBuffer(GET_DISPATCH(), (size, type, cx->feedbackBuf)); cx->hasUnflushedCommands = GL_TRUE; return Success; } int __glXDispSwap_SelectBuffer(__GLXclientState * cl, GLbyte * pc) { __GLXcontext *cx; GLsizei size; __GLX_DECLARE_SWAP_VARIABLES; int error; __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); if (!cx) { return error; } pc += __GLX_SINGLE_HDR_SIZE; __GLX_SWAP_INT(pc + 0); size = *(GLsizei *) (pc + 0); if (cx->selectBufSize < size) { cx->selectBuf = (GLuint *) realloc(cx->selectBuf, (size_t) size * __GLX_SIZE_CARD32); if (!cx->selectBuf) { cl->client->errorValue = size; return BadAlloc; } cx->selectBufSize = size; } CALL_SelectBuffer(GET_DISPATCH(), (size, cx->selectBuf)); cx->hasUnflushedCommands = GL_TRUE; return Success; } int __glXDispSwap_RenderMode(__GLXclientState * cl, GLbyte * pc) { ClientPtr client; __GLXcontext *cx; xGLXRenderModeReply reply; GLint nitems = 0, retBytes = 0, retval, newModeCheck; GLubyte *retBuffer = NULL; GLenum newMode; __GLX_DECLARE_SWAP_VARIABLES; __GLX_DECLARE_SWAP_ARRAY_VARIABLES; int error; __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); if (!cx) { return error; } pc += __GLX_SINGLE_HDR_SIZE; __GLX_SWAP_INT(pc); newMode = *(GLenum *) pc; retval = CALL_RenderMode(GET_DISPATCH(), (newMode)); /* Check that render mode worked */ CALL_GetIntegerv(GET_DISPATCH(), (GL_RENDER_MODE, &newModeCheck)); if (newModeCheck != newMode) { /* Render mode change failed. Bail */ newMode = newModeCheck; goto noChangeAllowed; } /* ** Render mode might have still failed if we get here. But in this ** case we can't really tell, nor does it matter. If it did fail, it ** will return 0, and thus we won't send any data across the wire. */ switch (cx->renderMode) { case GL_RENDER: cx->renderMode = newMode; break; case GL_FEEDBACK: if (retval < 0) { /* Overflow happened. Copy the entire buffer */ nitems = cx->feedbackBufSize; } else { nitems = retval; } retBytes = nitems * __GLX_SIZE_FLOAT32; retBuffer = (GLubyte *) cx->feedbackBuf; __GLX_SWAP_FLOAT_ARRAY((GLbyte *) retBuffer, nitems); cx->renderMode = newMode; break; case GL_SELECT: if (retval < 0) { /* Overflow happened. Copy the entire buffer */ nitems = cx->selectBufSize; } else { GLuint *bp = cx->selectBuf; GLint i; /* ** Figure out how many bytes of data need to be sent. Parse ** the selection buffer to determine this fact as the ** return value is the number of hits, not the number of ** items in the buffer. */ nitems = 0; i = retval; while (--i >= 0) { GLuint n; /* Parse select data for this hit */ n = *bp; bp += 3 + n; } nitems = bp - cx->selectBuf; } retBytes = nitems * __GLX_SIZE_CARD32; retBuffer = (GLubyte *) cx->selectBuf; __GLX_SWAP_INT_ARRAY((GLbyte *) retBuffer, nitems); cx->renderMode = newMode; break; } /* ** First reply is the number of elements returned in the feedback or ** selection array, as per the API for glRenderMode itself. */ noChangeAllowed:; client = cl->client; reply = (xGLXRenderModeReply) { .type = X_Reply, .sequenceNumber = client->sequence, .length = nitems, .retval = retval, .size = nitems, .newMode = newMode }; __GLX_SWAP_SHORT(&reply.sequenceNumber); __GLX_SWAP_INT(&reply.length); __GLX_SWAP_INT(&reply.retval); __GLX_SWAP_INT(&reply.size); __GLX_SWAP_INT(&reply.newMode); WriteToClient(client, sz_xGLXRenderModeReply, &reply); if (retBytes) { WriteToClient(client, retBytes, retBuffer); } return Success; } int __glXDispSwap_Flush(__GLXclientState * cl, GLbyte * pc) { __GLXcontext *cx; int error; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); if (!cx) { return error; } CALL_Flush(GET_DISPATCH(), ()); cx->hasUnflushedCommands = GL_FALSE; return Success; } int __glXDispSwap_Finish(__GLXclientState * cl, GLbyte * pc) { __GLXcontext *cx; ClientPtr client; int error; __GLX_DECLARE_SWAP_VARIABLES; __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); if (!cx) { return error; } /* Do a local glFinish */ CALL_Finish(GET_DISPATCH(), ()); cx->hasUnflushedCommands = GL_FALSE; /* Send empty reply packet to indicate finish is finished */ client = cl->client; __GLX_BEGIN_REPLY(0); __GLX_PUT_RETVAL(0); __GLX_SWAP_REPLY_HEADER(); __GLX_SEND_HEADER(); return Success; } int __glXDispSwap_GetString(__GLXclientState * cl, GLbyte * pc) { return DoGetString(cl, pc, GL_TRUE); }