singlepix.c revision 23215ef4d60a86d9f3b3fdc08e3fdadc59e98890 
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#include "packsingle.h"
32#include "indirect.h"
33#include "glapitable.h"
34#include "glapidispatch.h"
35#include "glapi.h"
36#include "glthread.h"
37#include "glapioffsets.h"
38#include <GL/glxproto.h>
39
40void
41__indirect_glGetSeparableFilter(GLenum target, GLenum format, GLenum type,
42                                GLvoid * row, GLvoid * column, GLvoid * span)
43{
44   __GLX_SINGLE_DECLARE_VARIABLES();
45   const __GLXattribute *state;
46   xGLXGetSeparableFilterReply reply;
47   GLubyte *rowBuf, *colBuf;
48
49   if (!dpy)
50      return;
51   __GLX_SINGLE_LOAD_VARIABLES();
52   state = gc->client_state_private;
53
54   /* Send request */
55   __GLX_SINGLE_BEGIN(X_GLsop_GetSeparableFilter, __GLX_PAD(13));
56   __GLX_SINGLE_PUT_LONG(0, target);
57   __GLX_SINGLE_PUT_LONG(4, format);
58   __GLX_SINGLE_PUT_LONG(8, type);
59   __GLX_SINGLE_PUT_CHAR(12, state->storePack.swapEndian);
60   __GLX_SINGLE_READ_XREPLY();
61   compsize = reply.length << 2;
62
63   if (compsize != 0) {
64      GLint width, height;
65      GLint widthsize, heightsize;
66
67      width = reply.width;
68      height = reply.height;
69
70      widthsize = __glImageSize(width, 1, 1, format, type, 0);
71      heightsize = __glImageSize(height, 1, 1, format, type, 0);
72
73      /* Allocate a holding buffer to transform the data from */
74      rowBuf = (GLubyte *) Xmalloc(widthsize);
75      if (!rowBuf) {
76         /* Throw data away */
77         _XEatData(dpy, compsize);
78         __glXSetError(gc, GL_OUT_OF_MEMORY);
79         UnlockDisplay(dpy);
80         SyncHandle();
81         return;
82      }
83      else {
84         __GLX_SINGLE_GET_CHAR_ARRAY(((char *) rowBuf), widthsize);
85         __glEmptyImage(gc, 1, width, 1, 1, format, type, rowBuf, row);
86         Xfree((char *) rowBuf);
87      }
88      colBuf = (GLubyte *) Xmalloc(heightsize);
89      if (!colBuf) {
90         /* Throw data away */
91         _XEatData(dpy, compsize - __GLX_PAD(widthsize));
92         __glXSetError(gc, GL_OUT_OF_MEMORY);
93         UnlockDisplay(dpy);
94         SyncHandle();
95         return;
96      }
97      else {
98         __GLX_SINGLE_GET_CHAR_ARRAY(((char *) colBuf), heightsize);
99         __glEmptyImage(gc, 1, height, 1, 1, format, type, colBuf, column);
100         Xfree((char *) colBuf);
101      }
102   }
103   else {
104      /*
105       ** don't modify user's buffer.
106       */
107   }
108   __GLX_SINGLE_END();
109
110}
111
112
113#define CONCAT(a,b) a ## b
114#define NAME(o) CONCAT(gl_dispatch_stub_, o)
115
116void NAME(_gloffset_GetSeparableFilter) (GLenum target, GLenum format,
117                                         GLenum type, GLvoid * row,
118                                         GLvoid * column, GLvoid * span)
119{
120   __GLXcontext *const gc = __glXGetCurrentContext();
121
122#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
123   if (gc->driContext) {
124      CALL_GetSeparableFilter(GET_DISPATCH(),
125                              (target, format, type, row, column, span));
126      return;
127   }
128   else
129#endif
130   {
131      Display *const dpy = gc->currentDpy;
132      const GLuint cmdlen = __GLX_PAD(13);
133
134      if (dpy != NULL) {
135         const __GLXattribute *const state = gc->client_state_private;
136         xGLXGetSeparableFilterReply reply;
137         GLubyte const *pc =
138            __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
139                                    X_GLvop_GetSeparableFilterEXT, cmdlen);
140         unsigned compsize;
141
142
143         (void) memcpy((void *) (pc + 0), (void *) (&target), 4);
144         (void) memcpy((void *) (pc + 4), (void *) (&format), 4);
145         (void) memcpy((void *) (pc + 8), (void *) (&type), 4);
146         *(int8_t *) (pc + 12) = state->storePack.swapEndian;
147
148         (void) _XReply(dpy, (xReply *) & reply, 0, False);
149
150         compsize = reply.length << 2;
151
152         if (compsize != 0) {
153            const GLint width = reply.width;
154            const GLint height = reply.height;
155            const GLint widthsize =
156               __glImageSize(width, 1, 1, format, type, 0);
157            const GLint heightsize =
158               __glImageSize(height, 1, 1, format, type, 0);
159            GLubyte *const buf =
160               (GLubyte *) Xmalloc((widthsize > heightsize) ? widthsize :
161                                   heightsize);
162
163            if (buf == NULL) {
164               /* Throw data away */
165               _XEatData(dpy, compsize);
166               __glXSetError(gc, GL_OUT_OF_MEMORY);
167
168               UnlockDisplay(dpy);
169               SyncHandle();
170               return;
171            }
172            else {
173               int extra;
174
175               extra = 4 - (widthsize & 3);
176               _XRead(dpy, (char *) buf, widthsize);
177               if (extra < 4) {
178                  _XEatData(dpy, extra);
179               }
180
181               __glEmptyImage(gc, 1, width, 1, 1, format, type, buf, row);
182
183               extra = 4 - (heightsize & 3);
184               _XRead(dpy, (char *) buf, heightsize);
185               if (extra < 4) {
186                  _XEatData(dpy, extra);
187               }
188
189               __glEmptyImage(gc, 1, height, 1, 1, format, type, buf, column);
190
191               Xfree((char *) buf);
192            }
193         }
194      }
195   }
196}
197