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a09e091a JB |
1 | /* |
2 | * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) | |
3 | * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice including the dates of first publication and | |
13 | * either this permission notice or a reference to | |
14 | * http://oss.sgi.com/projects/FreeB/ | |
15 | * shall be included in all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
21 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF | |
22 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
24 | * | |
25 | * Except as contained in this notice, the name of Silicon Graphics, Inc. | |
26 | * shall not be used in advertising or otherwise to promote the sale, use or | |
27 | * other dealings in this Software without prior written authorization from | |
28 | * Silicon Graphics, Inc. | |
29 | */ | |
30 | ||
31 | #ifdef HAVE_DIX_CONFIG_H | |
32 | #include <dix-config.h> | |
33 | #endif | |
34 | ||
35 | #include "glxserver.h" | |
36 | #include "glxutil.h" | |
37 | #include "glxext.h" | |
38 | #include "indirect_dispatch.h" | |
39 | #include "unpack.h" | |
40 | ||
41 | int | |
42 | __glXDispSwap_FeedbackBuffer(__GLXclientState * cl, GLbyte * pc) | |
43 | { | |
44 | GLsizei size; | |
45 | GLenum type; | |
46 | ||
47 | __GLX_DECLARE_SWAP_VARIABLES; | |
48 | __GLXcontext *cx; | |
49 | int error; | |
50 | ||
51 | __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); | |
52 | cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); | |
53 | if (!cx) { | |
54 | return error; | |
55 | } | |
56 | ||
57 | pc += __GLX_SINGLE_HDR_SIZE; | |
58 | __GLX_SWAP_INT(pc + 0); | |
59 | __GLX_SWAP_INT(pc + 4); | |
60 | size = *(GLsizei *) (pc + 0); | |
61 | type = *(GLenum *) (pc + 4); | |
62 | if (cx->feedbackBufSize < size) { | |
63 | cx->feedbackBuf = (GLfloat *) realloc(cx->feedbackBuf, | |
64 | (size_t) size | |
65 | * __GLX_SIZE_FLOAT32); | |
66 | if (!cx->feedbackBuf) { | |
67 | cl->client->errorValue = size; | |
68 | return BadAlloc; | |
69 | } | |
70 | cx->feedbackBufSize = size; | |
71 | } | |
72 | glFeedbackBuffer(size, type, cx->feedbackBuf); | |
73 | cx->hasUnflushedCommands = GL_TRUE; | |
74 | return Success; | |
75 | } | |
76 | ||
77 | int | |
78 | __glXDispSwap_SelectBuffer(__GLXclientState * cl, GLbyte * pc) | |
79 | { | |
80 | __GLXcontext *cx; | |
81 | GLsizei size; | |
82 | ||
83 | __GLX_DECLARE_SWAP_VARIABLES; | |
84 | int error; | |
85 | ||
86 | __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); | |
87 | cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); | |
88 | if (!cx) { | |
89 | return error; | |
90 | } | |
91 | ||
92 | pc += __GLX_SINGLE_HDR_SIZE; | |
93 | __GLX_SWAP_INT(pc + 0); | |
94 | size = *(GLsizei *) (pc + 0); | |
95 | if (cx->selectBufSize < size) { | |
96 | cx->selectBuf = (GLuint *) realloc(cx->selectBuf, | |
97 | (size_t) size * __GLX_SIZE_CARD32); | |
98 | if (!cx->selectBuf) { | |
99 | cl->client->errorValue = size; | |
100 | return BadAlloc; | |
101 | } | |
102 | cx->selectBufSize = size; | |
103 | } | |
104 | glSelectBuffer(size, cx->selectBuf); | |
105 | cx->hasUnflushedCommands = GL_TRUE; | |
106 | return Success; | |
107 | } | |
108 | ||
109 | int | |
110 | __glXDispSwap_RenderMode(__GLXclientState * cl, GLbyte * pc) | |
111 | { | |
112 | ClientPtr client; | |
113 | __GLXcontext *cx; | |
114 | xGLXRenderModeReply reply; | |
115 | GLint nitems = 0, retBytes = 0, retval, newModeCheck; | |
116 | GLubyte *retBuffer = NULL; | |
117 | GLenum newMode; | |
118 | ||
119 | __GLX_DECLARE_SWAP_VARIABLES; | |
120 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; | |
121 | int error; | |
122 | ||
123 | __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); | |
124 | cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); | |
125 | if (!cx) { | |
126 | return error; | |
127 | } | |
128 | ||
129 | pc += __GLX_SINGLE_HDR_SIZE; | |
130 | __GLX_SWAP_INT(pc); | |
131 | newMode = *(GLenum *) pc; | |
132 | retval = glRenderMode(newMode); | |
133 | ||
134 | /* Check that render mode worked */ | |
135 | glGetIntegerv(GL_RENDER_MODE, &newModeCheck); | |
136 | if (newModeCheck != newMode) { | |
137 | /* Render mode change failed. Bail */ | |
138 | newMode = newModeCheck; | |
139 | goto noChangeAllowed; | |
140 | } | |
141 | ||
142 | /* | |
143 | ** Render mode might have still failed if we get here. But in this | |
144 | ** case we can't really tell, nor does it matter. If it did fail, it | |
145 | ** will return 0, and thus we won't send any data across the wire. | |
146 | */ | |
147 | ||
148 | switch (cx->renderMode) { | |
149 | case GL_RENDER: | |
150 | cx->renderMode = newMode; | |
151 | break; | |
152 | case GL_FEEDBACK: | |
153 | if (retval < 0) { | |
154 | /* Overflow happened. Copy the entire buffer */ | |
155 | nitems = cx->feedbackBufSize; | |
156 | } | |
157 | else { | |
158 | nitems = retval; | |
159 | } | |
160 | retBytes = nitems * __GLX_SIZE_FLOAT32; | |
161 | retBuffer = (GLubyte *) cx->feedbackBuf; | |
162 | __GLX_SWAP_FLOAT_ARRAY((GLbyte *) retBuffer, nitems); | |
163 | cx->renderMode = newMode; | |
164 | break; | |
165 | case GL_SELECT: | |
166 | if (retval < 0) { | |
167 | /* Overflow happened. Copy the entire buffer */ | |
168 | nitems = cx->selectBufSize; | |
169 | } | |
170 | else { | |
171 | GLuint *bp = cx->selectBuf; | |
172 | GLint i; | |
173 | ||
174 | /* | |
175 | ** Figure out how many bytes of data need to be sent. Parse | |
176 | ** the selection buffer to determine this fact as the | |
177 | ** return value is the number of hits, not the number of | |
178 | ** items in the buffer. | |
179 | */ | |
180 | nitems = 0; | |
181 | i = retval; | |
182 | while (--i >= 0) { | |
183 | GLuint n; | |
184 | ||
185 | /* Parse select data for this hit */ | |
186 | n = *bp; | |
187 | bp += 3 + n; | |
188 | } | |
189 | nitems = bp - cx->selectBuf; | |
190 | } | |
191 | retBytes = nitems * __GLX_SIZE_CARD32; | |
192 | retBuffer = (GLubyte *) cx->selectBuf; | |
193 | __GLX_SWAP_INT_ARRAY((GLbyte *) retBuffer, nitems); | |
194 | cx->renderMode = newMode; | |
195 | break; | |
196 | } | |
197 | ||
198 | /* | |
199 | ** First reply is the number of elements returned in the feedback or | |
200 | ** selection array, as per the API for glRenderMode itself. | |
201 | */ | |
202 | noChangeAllowed:; | |
203 | client = cl->client; | |
204 | reply = (xGLXRenderModeReply) { | |
205 | .type = X_Reply, | |
206 | .sequenceNumber = client->sequence, | |
207 | .length = nitems, | |
208 | .retval = retval, | |
209 | .size = nitems, | |
210 | .newMode = newMode | |
211 | }; | |
212 | __GLX_SWAP_SHORT(&reply.sequenceNumber); | |
213 | __GLX_SWAP_INT(&reply.length); | |
214 | __GLX_SWAP_INT(&reply.retval); | |
215 | __GLX_SWAP_INT(&reply.size); | |
216 | __GLX_SWAP_INT(&reply.newMode); | |
217 | WriteToClient(client, sz_xGLXRenderModeReply, &reply); | |
218 | if (retBytes) { | |
219 | WriteToClient(client, retBytes, retBuffer); | |
220 | } | |
221 | return Success; | |
222 | } | |
223 | ||
224 | int | |
225 | __glXDispSwap_Flush(__GLXclientState * cl, GLbyte * pc) | |
226 | { | |
227 | __GLXcontext *cx; | |
228 | int error; | |
229 | ||
230 | __GLX_DECLARE_SWAP_VARIABLES; | |
231 | ||
232 | __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); | |
233 | cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); | |
234 | if (!cx) { | |
235 | return error; | |
236 | } | |
237 | ||
238 | glFlush(); | |
239 | cx->hasUnflushedCommands = GL_FALSE; | |
240 | return Success; | |
241 | } | |
242 | ||
243 | int | |
244 | __glXDispSwap_Finish(__GLXclientState * cl, GLbyte * pc) | |
245 | { | |
246 | __GLXcontext *cx; | |
247 | ClientPtr client; | |
248 | int error; | |
249 | ||
250 | __GLX_DECLARE_SWAP_VARIABLES; | |
251 | ||
252 | __GLX_SWAP_INT(&((xGLXSingleReq *) pc)->contextTag); | |
253 | cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error); | |
254 | if (!cx) { | |
255 | return error; | |
256 | } | |
257 | ||
258 | /* Do a local glFinish */ | |
259 | glFinish(); | |
260 | cx->hasUnflushedCommands = GL_FALSE; | |
261 | ||
262 | /* Send empty reply packet to indicate finish is finished */ | |
263 | client = cl->client; | |
264 | __GLX_BEGIN_REPLY(0); | |
265 | __GLX_PUT_RETVAL(0); | |
266 | __GLX_SWAP_REPLY_HEADER(); | |
267 | __GLX_SEND_HEADER(); | |
268 | ||
269 | return Success; | |
270 | } | |
271 | ||
272 | int | |
273 | __glXDispSwap_GetString(__GLXclientState * cl, GLbyte * pc) | |
274 | { | |
275 | return DoGetString(cl, pc, GL_TRUE); | |
276 | } |