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 "glapitable.h"
  34 #include "glapidispatch.h"
  35 #include "glapi.h"
  36 #include "glthread.h"
  37 #include "glapioffsets.h"
  38 #include <GL/glxproto.h>
  39
  40 void
  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
 116 void NAME(_gloffset_GetSeparableFilter) (GLenum target, GLenum format,
 117                                          GLenum type, GLvoid * row,
 118                                          GLvoid * column, GLvoid * span)
 119 {
 120    struct glx_context *const gc = __glXGetCurrentContext();
 121
 122 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 123    if (gc->isDirect) {
 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 }