src/glx/singlepix.c

   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
  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 */
 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 }