283 lines
8.0 KiB
C
283 lines
8.0 KiB
C
/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "glxserver.h"
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#include "glxutil.h"
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#include "glxext.h"
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#include "indirect_dispatch.h"
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#include "unpack.h"
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int
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__glXDispSwap_FeedbackBuffer(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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GLsizei size;
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GLenum type;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLXcontext *cx;
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int error;
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REQUEST_FIXED_SIZE(xGLXSingleReq, 8);
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__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
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cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
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if (!cx) {
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return error;
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}
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pc += __GLX_SINGLE_HDR_SIZE;
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__GLX_SWAP_INT(pc + 0);
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__GLX_SWAP_INT(pc + 4);
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size = *(GLsizei *) (pc + 0);
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type = *(GLenum *) (pc + 4);
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if (cx->feedbackBufSize < size) {
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cx->feedbackBuf = reallocarray(cx->feedbackBuf,
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(size_t) size, __GLX_SIZE_FLOAT32);
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if (!cx->feedbackBuf) {
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cl->client->errorValue = size;
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return BadAlloc;
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}
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cx->feedbackBufSize = size;
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}
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glFeedbackBuffer(size, type, cx->feedbackBuf);
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return Success;
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}
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int
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__glXDispSwap_SelectBuffer(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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__GLXcontext *cx;
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GLsizei size;
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__GLX_DECLARE_SWAP_VARIABLES;
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int error;
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REQUEST_FIXED_SIZE(xGLXSingleReq, 4);
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__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
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cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
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if (!cx) {
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return error;
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}
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pc += __GLX_SINGLE_HDR_SIZE;
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__GLX_SWAP_INT(pc + 0);
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size = *(GLsizei *) (pc + 0);
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if (cx->selectBufSize < size) {
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cx->selectBuf = reallocarray(cx->selectBuf,
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(size_t) size, __GLX_SIZE_CARD32);
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if (!cx->selectBuf) {
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cl->client->errorValue = size;
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return BadAlloc;
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}
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cx->selectBufSize = size;
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}
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glSelectBuffer(size, cx->selectBuf);
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return Success;
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}
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int
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__glXDispSwap_RenderMode(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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__GLXcontext *cx;
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xGLXRenderModeReply reply;
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GLint nitems = 0, retBytes = 0, retval, newModeCheck;
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GLubyte *retBuffer = NULL;
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GLenum newMode;
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__GLX_DECLARE_SWAP_VARIABLES;
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__GLX_DECLARE_SWAP_ARRAY_VARIABLES;
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int error;
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REQUEST_FIXED_SIZE(xGLXSingleReq, 4);
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__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
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cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
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if (!cx) {
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return error;
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}
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pc += __GLX_SINGLE_HDR_SIZE;
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__GLX_SWAP_INT(pc);
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newMode = *(GLenum *) pc;
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retval = glRenderMode(newMode);
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/* Check that render mode worked */
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glGetIntegerv(GL_RENDER_MODE, &newModeCheck);
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if (newModeCheck != newMode) {
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/* Render mode change failed. Bail */
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newMode = newModeCheck;
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goto noChangeAllowed;
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}
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/*
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** Render mode might have still failed if we get here. But in this
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** case we can't really tell, nor does it matter. If it did fail, it
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** will return 0, and thus we won't send any data across the wire.
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*/
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switch (cx->renderMode) {
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case GL_RENDER:
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cx->renderMode = newMode;
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break;
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case GL_FEEDBACK:
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if (retval < 0) {
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/* Overflow happened. Copy the entire buffer */
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nitems = cx->feedbackBufSize;
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}
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else {
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nitems = retval;
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}
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retBytes = nitems * __GLX_SIZE_FLOAT32;
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retBuffer = (GLubyte *) cx->feedbackBuf;
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__GLX_SWAP_FLOAT_ARRAY((GLbyte *) retBuffer, nitems);
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cx->renderMode = newMode;
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break;
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case GL_SELECT:
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if (retval < 0) {
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/* Overflow happened. Copy the entire buffer */
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nitems = cx->selectBufSize;
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}
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else {
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GLuint *bp = cx->selectBuf;
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GLint i;
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/*
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** Figure out how many bytes of data need to be sent. Parse
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** the selection buffer to determine this fact as the
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** return value is the number of hits, not the number of
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** items in the buffer.
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*/
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nitems = 0;
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i = retval;
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while (--i >= 0) {
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GLuint n;
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/* Parse select data for this hit */
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n = *bp;
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bp += 3 + n;
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}
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nitems = bp - cx->selectBuf;
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}
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retBytes = nitems * __GLX_SIZE_CARD32;
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retBuffer = (GLubyte *) cx->selectBuf;
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__GLX_SWAP_INT_ARRAY((GLbyte *) retBuffer, nitems);
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cx->renderMode = newMode;
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break;
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}
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/*
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** First reply is the number of elements returned in the feedback or
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** selection array, as per the API for glRenderMode itself.
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*/
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noChangeAllowed:;
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reply = (xGLXRenderModeReply) {
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.type = X_Reply,
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.sequenceNumber = client->sequence,
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.length = nitems,
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.retval = retval,
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.size = nitems,
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.newMode = newMode
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};
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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.retval);
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__GLX_SWAP_INT(&reply.size);
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__GLX_SWAP_INT(&reply.newMode);
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WriteToClient(client, sz_xGLXRenderModeReply, &reply);
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if (retBytes) {
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WriteToClient(client, retBytes, retBuffer);
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}
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return Success;
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}
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int
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__glXDispSwap_Flush(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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__GLXcontext *cx;
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int error;
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__GLX_DECLARE_SWAP_VARIABLES;
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REQUEST_SIZE_MATCH(xGLXSingleReq);
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__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
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cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
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if (!cx) {
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return error;
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}
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glFlush();
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return Success;
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}
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int
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__glXDispSwap_Finish(__GLXclientState * cl, GLbyte * pc)
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{
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ClientPtr client = cl->client;
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__GLXcontext *cx;
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int error;
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__GLX_DECLARE_SWAP_VARIABLES;
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REQUEST_SIZE_MATCH(xGLXSingleReq);
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__GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag);
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cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
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if (!cx) {
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return error;
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}
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/* Do a local glFinish */
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glFinish();
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/* Send empty reply packet to indicate finish is finished */
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__GLX_BEGIN_REPLY(0);
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__GLX_PUT_RETVAL(0);
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__GLX_SWAP_REPLY_HEADER();
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__GLX_SEND_HEADER();
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return Success;
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}
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int
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__glXDispSwap_GetString(__GLXclientState * cl, GLbyte * pc)
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{
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return DoGetString(cl, pc, GL_TRUE);
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}
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