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Diffstat (limited to 'glx/single2swap.c')
| -rw-r--r-- | glx/single2swap.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/glx/single2swap.c b/glx/single2swap.c new file mode 100644 index 000000000..41a42bb0f --- /dev/null +++ b/glx/single2swap.c @@ -0,0 +1,272 @@ +/* +** 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 +#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 *) xrealloc(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) ); + __GLX_NOTE_UNFLUSHED_CMDS(cx); + 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 *) xrealloc(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) ); + __GLX_NOTE_UNFLUSHED_CMDS(cx); + 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.length = nitems; + reply.type = X_Reply; + reply.sequenceNumber = client->sequence; + reply.retval = retval; + reply.size = nitems; + reply.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, (char *)&reply); + if (retBytes) { + WriteToClient(client, retBytes, (char *)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(), () ); + __GLX_NOTE_FLUSHED_CMDS(cx); + 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(), () ); + __GLX_NOTE_FLUSHED_CMDS(cx); + + /* 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); +} |