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 "glthread.h"
  35 #include <GL/glxproto.h>
  36
  37 void
  38 __indirect_glGetSeparableFilter(GLenum target, GLenum format, GLenum type,
  39                                 GLvoid * row, GLvoid * column, GLvoid * span)
  40 {
  41    __GLX_SINGLE_DECLARE_VARIABLES();
  42    const __GLXattribute *state;
  43    xGLXGetSeparableFilterReply reply;
  44    GLubyte *rowBuf, *colBuf;
  45
  46    if (!dpy)
  47       return;
  48    __GLX_SINGLE_LOAD_VARIABLES();
  49    state = gc->client_state_private;
  50
  51    /* Send request */
  52    __GLX_SINGLE_BEGIN(X_GLsop_GetSeparableFilter, __GLX_PAD(13));
  53    __GLX_SINGLE_PUT_LONG(0, target);
  54    __GLX_SINGLE_PUT_LONG(4, format);
  55    __GLX_SINGLE_PUT_LONG(8, type);
  56    __GLX_SINGLE_PUT_CHAR(12, state->storePack.swapEndian);
  57    __GLX_SINGLE_READ_XREPLY();
  58    compsize = reply.length << 2;
  59
  60    if (compsize != 0) {
  61       GLint width, height;
  62       GLint widthsize, heightsize;
  63
  64       width = reply.width;
  65       height = reply.height;
  66
  67       widthsize = __glImageSize(width, 1, 1, format, type, 0);
  68       heightsize = __glImageSize(height, 1, 1, format, type, 0);
  69
  70       /* Allocate a holding buffer to transform the data from */
  71       rowBuf = (GLubyte *) malloc(widthsize);
  72       if (!rowBuf) {
  73          /* Throw data away */
  74          _XEatData(dpy, compsize);
  75          __glXSetError(gc, GL_OUT_OF_MEMORY);
  76          UnlockDisplay(dpy);
  77          SyncHandle();
  78          return;
  79       }
  80       else {
  81          __GLX_SINGLE_GET_CHAR_ARRAY(((char *) rowBuf), widthsize);
  82          __glEmptyImage(gc, 1, width, 1, 1, format, type, rowBuf, row);
  83          free((char *) rowBuf);
  84       }
  85       colBuf = (GLubyte *) malloc(heightsize);
  86       if (!colBuf) {
  87          /* Throw data away */
  88          _XEatData(dpy, compsize - __GLX_PAD(widthsize));
  89          __glXSetError(gc, GL_OUT_OF_MEMORY);
  90          UnlockDisplay(dpy);
  91          SyncHandle();
  92          return;
  93       }
  94       else {
  95          __GLX_SINGLE_GET_CHAR_ARRAY(((char *) colBuf), heightsize);
  96          __glEmptyImage(gc, 1, height, 1, 1, format, type, colBuf, column);
  97          free((char *) colBuf);
  98       }
  99    }
 100    else {
 101       /*
 102        ** don't modify user's buffer.
 103        */
 104    }
 105    __GLX_SINGLE_END();
 106
 107 }
 108
 109
 110 /* it is defined to gl_dispatch_stub_NNN in indirect.h */
 111 void gl_dispatch_stub_GetSeparableFilterEXT (GLenum target, GLenum format,
 112                                              GLenum type, GLvoid * row,
 113                                              GLvoid * column, GLvoid * span)
 114 {
 115    struct glx_context *const gc = __glXGetCurrentContext();
 116
 117 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 118    if (gc->isDirect) {
 119       const _glapi_proc *const table = (_glapi_proc *) GET_DISPATCH();
 120       PFNGLGETSEPARABLEFILTEREXTPROC p =
 121          (PFNGLGETSEPARABLEFILTEREXTPROC) table[359];
 122
 123       p(target, format, type, row, column, span);
 124       return;
 125    }
 126    else
 127 #endif
 128    {
 129       Display *const dpy = gc->currentDpy;
 130       const GLuint cmdlen = __GLX_PAD(13);
 131
 132       if (dpy != NULL) {
 133          const __GLXattribute *const state = gc->client_state_private;
 134          xGLXGetSeparableFilterReply reply;
 135          GLubyte const *pc =
 136             __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
 137                                     X_GLvop_GetSeparableFilterEXT, cmdlen);
 138          unsigned compsize;
 139
 140
 141          (void) memcpy((void *) (pc + 0), (void *) (&target), 4);
 142          (void) memcpy((void *) (pc + 4), (void *) (&format), 4);
 143          (void) memcpy((void *) (pc + 8), (void *) (&type), 4);
 144          *(int8_t *) (pc + 12) = state->storePack.swapEndian;
 145
 146          (void) _XReply(dpy, (xReply *) & reply, 0, False);
 147
 148          compsize = reply.length << 2;
 149
 150          if (compsize != 0) {
 151             const GLint width = reply.width;
 152             const GLint height = reply.height;
 153             const GLint widthsize =
 154                __glImageSize(width, 1, 1, format, type, 0);
 155             const GLint heightsize =
 156                __glImageSize(height, 1, 1, format, type, 0);
 157             GLubyte *const buf =
 158                (GLubyte *) malloc((widthsize > heightsize) ? widthsize : heightsize);
 159
 160             if (buf == NULL) {
 161                /* Throw data away */
 162                _XEatData(dpy, compsize);
 163                __glXSetError(gc, GL_OUT_OF_MEMORY);
 164
 165                UnlockDisplay(dpy);
 166                SyncHandle();
 167                return;
 168             }
 169             else {
 170                int extra;
 171
 172                extra = 4 - (widthsize & 3);
 173                _XRead(dpy, (char *) buf, widthsize);
 174                if (extra < 4) {
 175                   _XEatData(dpy, extra);
 176                }
 177
 178                __glEmptyImage(gc, 1, width, 1, 1, format, type, buf, row);
 179
 180                extra = 4 - (heightsize & 3);
 181                _XRead(dpy, (char *) buf, heightsize);
 182                if (extra < 4) {
 183                   _XEatData(dpy, extra);
 184                }
 185
 186                __glEmptyImage(gc, 1, height, 1, 1, format, type, buf, column);
 187
 188                free((char *) buf);
 189             }
 190          }
 191       }
 192    }
 193 }