singlepix.c revision e4dbfa44ed018d124e1531077d506c8c914c1a51 
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 "glapi.h"
35#include "glthread.h"
36#include <GL/glxproto.h>
37
38void
39__indirect_glGetSeparableFilter(GLenum target, GLenum format, GLenum type,
40                                GLvoid * row, GLvoid * column, GLvoid * span)
41{
42   __GLX_SINGLE_DECLARE_VARIABLES();
43   const __GLXattribute *state;
44   xGLXGetSeparableFilterReply reply;
45   GLubyte *rowBuf, *colBuf;
46
47   if (!dpy)
48      return;
49   __GLX_SINGLE_LOAD_VARIABLES();
50   state = gc->client_state_private;
51
52   /* Send request */
53   __GLX_SINGLE_BEGIN(X_GLsop_GetSeparableFilter, __GLX_PAD(13));
54   __GLX_SINGLE_PUT_LONG(0, target);
55   __GLX_SINGLE_PUT_LONG(4, format);
56   __GLX_SINGLE_PUT_LONG(8, type);
57   __GLX_SINGLE_PUT_CHAR(12, state->storePack.swapEndian);
58   __GLX_SINGLE_READ_XREPLY();
59   compsize = reply.length << 2;
60
61   if (compsize != 0) {
62      GLint width, height;
63      GLint widthsize, heightsize;
64
65      width = reply.width;
66      height = reply.height;
67
68      widthsize = __glImageSize(width, 1, 1, format, type, 0);
69      heightsize = __glImageSize(height, 1, 1, format, type, 0);
70
71      /* Allocate a holding buffer to transform the data from */
72      rowBuf = (GLubyte *) Xmalloc(widthsize);
73      if (!rowBuf) {
74         /* Throw data away */
75         _XEatData(dpy, compsize);
76         __glXSetError(gc, GL_OUT_OF_MEMORY);
77         UnlockDisplay(dpy);
78         SyncHandle();
79         return;
80      }
81      else {
82         __GLX_SINGLE_GET_CHAR_ARRAY(((char *) rowBuf), widthsize);
83         __glEmptyImage(gc, 1, width, 1, 1, format, type, rowBuf, row);
84         Xfree((char *) rowBuf);
85      }
86      colBuf = (GLubyte *) Xmalloc(heightsize);
87      if (!colBuf) {
88         /* Throw data away */
89         _XEatData(dpy, compsize - __GLX_PAD(widthsize));
90         __glXSetError(gc, GL_OUT_OF_MEMORY);
91         UnlockDisplay(dpy);
92         SyncHandle();
93         return;
94      }
95      else {
96         __GLX_SINGLE_GET_CHAR_ARRAY(((char *) colBuf), heightsize);
97         __glEmptyImage(gc, 1, height, 1, 1, format, type, colBuf, column);
98         Xfree((char *) colBuf);
99      }
100   }
101   else {
102      /*
103       ** don't modify user's buffer.
104       */
105   }
106   __GLX_SINGLE_END();
107
108}
109
110
111/* it is defined to gl_dispatch_stub_NNN in indirect.h */
112void gl_dispatch_stub_GetSeparableFilterEXT (GLenum target, GLenum format,
113                                             GLenum type, GLvoid * row,
114                                             GLvoid * column, GLvoid * span)
115{
116   struct glx_context *const gc = __glXGetCurrentContext();
117
118#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
119   if (gc->isDirect) {
120      GET_DISPATCH()->GetSeparableFilter(target, format, type,
121                                         row, column, span);
122      return;
123   }
124   else
125#endif
126   {
127      Display *const dpy = gc->currentDpy;
128      const GLuint cmdlen = __GLX_PAD(13);
129
130      if (dpy != NULL) {
131         const __GLXattribute *const state = gc->client_state_private;
132         xGLXGetSeparableFilterReply reply;
133         GLubyte const *pc =
134            __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
135                                    X_GLvop_GetSeparableFilterEXT, cmdlen);
136         unsigned compsize;
137
138
139         (void) memcpy((void *) (pc + 0), (void *) (&target), 4);
140         (void) memcpy((void *) (pc + 4), (void *) (&format), 4);
141         (void) memcpy((void *) (pc + 8), (void *) (&type), 4);
142         *(int8_t *) (pc + 12) = state->storePack.swapEndian;
143
144         (void) _XReply(dpy, (xReply *) & reply, 0, False);
145
146         compsize = reply.length << 2;
147
148         if (compsize != 0) {
149            const GLint width = reply.width;
150            const GLint height = reply.height;
151            const GLint widthsize =
152               __glImageSize(width, 1, 1, format, type, 0);
153            const GLint heightsize =
154               __glImageSize(height, 1, 1, format, type, 0);
155            GLubyte *const buf =
156               (GLubyte *) Xmalloc((widthsize > heightsize) ? widthsize :
157                                   heightsize);
158
159            if (buf == NULL) {
160               /* Throw data away */
161               _XEatData(dpy, compsize);
162               __glXSetError(gc, GL_OUT_OF_MEMORY);
163
164               UnlockDisplay(dpy);
165               SyncHandle();
166               return;
167            }
168            else {
169               int extra;
170
171               extra = 4 - (widthsize & 3);
172               _XRead(dpy, (char *) buf, widthsize);
173               if (extra < 4) {
174                  _XEatData(dpy, extra);
175               }
176
177               __glEmptyImage(gc, 1, width, 1, 1, format, type, buf, row);
178
179               extra = 4 - (heightsize & 3);
180               _XRead(dpy, (char *) buf, heightsize);
181               if (extra < 4) {
182                  _XEatData(dpy, extra);
183               }
184
185               __glEmptyImage(gc, 1, height, 1, 1, format, type, buf, column);
186
187               Xfree((char *) buf);
188            }
189         }
190      }
191   }
192}
193