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 "glapi.h"
34 #include <GL/glxproto.h>
35 
36 void
__indirect_glGetSeparableFilter(GLenum target,GLenum format,GLenum type,GLvoid * row,GLvoid * column,GLvoid * span)37 __indirect_glGetSeparableFilter(GLenum target, GLenum format, GLenum type,
38                                 GLvoid * row, GLvoid * column, GLvoid * span)
39 {
40    __GLX_SINGLE_DECLARE_VARIABLES();
41    const __GLXattribute *state;
42    xGLXGetSeparableFilterReply reply;
43    GLubyte *rowBuf, *colBuf;
44 
45    if (!dpy)
46       return;
47    __GLX_SINGLE_LOAD_VARIABLES();
48    state = gc->client_state_private;
49 
50    /* Send request */
51    __GLX_SINGLE_BEGIN(X_GLsop_GetSeparableFilter, __GLX_PAD(13));
52    __GLX_SINGLE_PUT_LONG(0, target);
53    __GLX_SINGLE_PUT_LONG(4, format);
54    __GLX_SINGLE_PUT_LONG(8, type);
55    __GLX_SINGLE_PUT_CHAR(12, state->storePack.swapEndian);
56    __GLX_SINGLE_READ_XREPLY();
57    compsize = reply.length << 2;
58 
59    if (compsize != 0) {
60       GLint width, height;
61       GLint widthsize, heightsize;
62 
63       width = reply.width;
64       height = reply.height;
65 
66       widthsize = __glImageSize(width, 1, 1, format, type, 0);
67       heightsize = __glImageSize(height, 1, 1, format, type, 0);
68 
69       /* Allocate a holding buffer to transform the data from */
70       rowBuf = malloc(widthsize);
71       if (!rowBuf) {
72          /* Throw data away */
73          _XEatData(dpy, compsize);
74          __glXSetError(gc, GL_OUT_OF_MEMORY);
75          UnlockDisplay(dpy);
76          SyncHandle();
77          return;
78       }
79       else {
80          __GLX_SINGLE_GET_CHAR_ARRAY(((char *) rowBuf), widthsize);
81          __glEmptyImage(gc, 1, width, 1, 1, format, type, rowBuf, row);
82          free((char *) rowBuf);
83       }
84       colBuf = malloc(heightsize);
85       if (!colBuf) {
86          /* Throw data away */
87          _XEatData(dpy, compsize - __GLX_PAD(widthsize));
88          __glXSetError(gc, GL_OUT_OF_MEMORY);
89          UnlockDisplay(dpy);
90          SyncHandle();
91          return;
92       }
93       else {
94          __GLX_SINGLE_GET_CHAR_ARRAY(((char *) colBuf), heightsize);
95          __glEmptyImage(gc, 1, height, 1, 1, format, type, colBuf, column);
96          free((char *) colBuf);
97       }
98    }
99    else {
100       /*
101        ** don't modify user's buffer.
102        */
103    }
104    __GLX_SINGLE_END();
105 
106 }
107 
108 
109 /* it is defined to gl_dispatch_stub_NNN in indirect.h */
gl_dispatch_stub_GetSeparableFilterEXT(GLenum target,GLenum format,GLenum type,GLvoid * row,GLvoid * column,GLvoid * span)110 void gl_dispatch_stub_GetSeparableFilterEXT (GLenum target, GLenum format,
111                                              GLenum type, GLvoid * row,
112                                              GLvoid * column, GLvoid * span)
113 {
114    struct glx_context *const gc = __glXGetCurrentContext();
115 
116 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
117    if (gc->isDirect) {
118       const _glapi_proc *const table = (_glapi_proc *) GET_DISPATCH();
119       PFNGLGETSEPARABLEFILTEREXTPROC p =
120          (PFNGLGETSEPARABLEFILTEREXTPROC) table[359];
121 
122       p(target, format, type, row, column, span);
123       return;
124    }
125    else
126 #endif
127    {
128       Display *const dpy = gc->currentDpy;
129       const GLuint cmdlen = __GLX_PAD(13);
130 
131       if (dpy != NULL) {
132          const __GLXattribute *const state = gc->client_state_private;
133          xGLXGetSeparableFilterReply reply;
134          GLubyte const *pc =
135             __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
136                                     X_GLvop_GetSeparableFilterEXT, cmdlen);
137          unsigned compsize;
138 
139 
140          (void) memcpy((void *) (pc + 0), (void *) (&target), 4);
141          (void) memcpy((void *) (pc + 4), (void *) (&format), 4);
142          (void) memcpy((void *) (pc + 8), (void *) (&type), 4);
143          *(int8_t *) (pc + 12) = state->storePack.swapEndian;
144 
145          (void) _XReply(dpy, (xReply *) & reply, 0, False);
146 
147          compsize = reply.length << 2;
148 
149          if (compsize != 0) {
150             const GLint width = reply.width;
151             const GLint height = reply.height;
152             const GLint widthsize =
153                __glImageSize(width, 1, 1, format, type, 0);
154             const GLint heightsize =
155                __glImageSize(height, 1, 1, format, type, 0);
156             GLubyte *const buf =
157                malloc((widthsize > heightsize) ? widthsize : 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                free((char *) buf);
188             }
189          }
190       }
191    }
192 }
193