src/glx/x11/singlepix.c

   1 /* $XFree86: xc/lib/GL/glx/singlepix.c,v 1.3 2001/03/21 16:04:39 dawes Exp $ */
   2 /*
   3 ** License Applicability. Except to the extent portions of this file are
   4 ** made subject to an alternative license as permitted in the SGI Free
   5 ** Software License B, Version 1.1 (the "License"), the contents of this
   6 ** file are subject only to the provisions of the License. You may not use
   7 ** this file except in compliance with the License. You may obtain a copy
   8 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   9 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
  10 **
  11 ** http://oss.sgi.com/projects/FreeB
  12 **
  13 ** Note that, as provided in the License, the Software is distributed on an
  14 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  15 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  16 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  17 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  18 **
  19 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  20 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  21 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  22 ** Copyright in any portions created by third parties is as indicated
  23 ** elsewhere herein. All Rights Reserved.
  24 **
  25 ** Additional Notice Provisions: The application programming interfaces
  26 ** established by SGI in conjunction with the Original Code are The
  27 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  28 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  29 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  30 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  31 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  32 ** published by SGI, but has not been independently verified as being
  33 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  34 **
  35 */
  36
  37 #include "packsingle.h"
  38 #include "indirect.h"
  39 #include "dispatch.h"
  40 #include "glthread.h"
  41 #include "glapioffsets.h"
  42 #include <GL/glxproto.h>
  43
  44 void __indirect_glGetSeparableFilter(GLenum target, GLenum format, GLenum type,
  45                           GLvoid *row, GLvoid *column, GLvoid *span)
  46 {
  47     __GLX_SINGLE_DECLARE_VARIABLES();
  48     const __GLXattribute * state;
  49     xGLXGetSeparableFilterReply reply;
  50     GLubyte *rowBuf, *colBuf;
  51
  52     if (!dpy) return;
  53     __GLX_SINGLE_LOAD_VARIABLES();
  54     state = gc->client_state_private;
  55
  56     /* Send request */
  57     __GLX_SINGLE_BEGIN(X_GLsop_GetSeparableFilter, __GLX_PAD(13));
  58     __GLX_SINGLE_PUT_LONG(0,target);
  59     __GLX_SINGLE_PUT_LONG(4,format);
  60     __GLX_SINGLE_PUT_LONG(8,type);
  61     __GLX_SINGLE_PUT_CHAR(12,state->storePack.swapEndian);
  62     __GLX_SINGLE_READ_XREPLY();
  63     compsize = reply.length << 2;
  64
  65     if (compsize != 0) {
  66         GLint width, height;
  67         GLint widthsize, heightsize;
  68
  69         width = reply.width;
  70         height = reply.height;
  71
  72         widthsize = __glImageSize(width,1,1,format, type, 0);
  73         heightsize = __glImageSize(height,1,1,format, type, 0);
  74
  75         /* Allocate a holding buffer to transform the data from */
  76         rowBuf = (GLubyte*) Xmalloc(widthsize);
  77         if (!rowBuf) {
  78             /* Throw data away */
  79             _XEatData(dpy, compsize);
  80             __glXSetError(gc, GL_OUT_OF_MEMORY);
  81             UnlockDisplay(dpy);
  82             SyncHandle();
  83             return;
  84         } else {
  85             __GLX_SINGLE_GET_CHAR_ARRAY(((char*)rowBuf),widthsize);
  86             __glEmptyImage(gc, 1, width, 1, 1, format, type, rowBuf, row);
  87             Xfree((char*) rowBuf);
  88         }
  89         colBuf = (GLubyte*) Xmalloc(heightsize);
  90         if (!colBuf) {
  91             /* Throw data away */
  92             _XEatData(dpy, compsize - __GLX_PAD(widthsize));
  93             __glXSetError(gc, GL_OUT_OF_MEMORY);
  94             UnlockDisplay(dpy);
  95             SyncHandle();
  96             return;
  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     } else {
 103         /*
 104         ** don't modify user's buffer.
 105         */
 106     }
 107     __GLX_SINGLE_END();
 108
 109 }
 110
 111
 112 #define CONCAT(a,b) a ## b
 113 #define NAME(o) CONCAT(gl_dispatch_stub_, o)
 114
 115 void NAME(_gloffset_GetSeparableFilter)(GLenum target, GLenum format, GLenum type,
 116                                         GLvoid *row, GLvoid *column, GLvoid *span)
 117 {
 118     __GLXcontext * const gc = __glXGetCurrentContext();
 119
 120     if (gc->isDirect) {
 121         CALL_GetSeparableFilter(GET_DISPATCH(),
 122                                 (target, format, type, row, column, span));
 123         return;
 124     }
 125     else {
 126         Display *const dpy = gc->currentDpy;
 127         const GLuint cmdlen = __GLX_PAD(13);
 128
 129         if (dpy != NULL) {
 130             const __GLXattribute * const state = gc->client_state_private;
 131             xGLXGetSeparableFilterReply reply;
 132             GLubyte const *pc =
 133               __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
 134                                       X_GLvop_GetSeparableFilterEXT, cmdlen);
 135             unsigned compsize;
 136
 137
 138             (void) memcpy((void *) (pc + 0), (void *) (&target), 4);
 139             (void) memcpy((void *) (pc + 4), (void *) (&format), 4);
 140             (void) memcpy((void *) (pc + 8), (void *) (&type), 4);
 141             *(int8_t *) (pc + 12) = state->storePack.swapEndian;
 142
 143             (void) _XReply(dpy, (xReply *) & reply, 0, False);
 144
 145             compsize = reply.length << 2;
 146
 147             if (compsize != 0) {
 148                 const GLint width = reply.width;
 149                 const GLint height = reply.height;
 150                 const GLint widthsize =
 151                   __glImageSize(width, 1, 1, format, type, 0);
 152                 const GLint heightsize =
 153                   __glImageSize(height, 1, 1, format, type, 0);
 154                 GLubyte * const buf =
 155                   (GLubyte*) Xmalloc((widthsize > heightsize) ? widthsize : heightsize);
 156
 157                 if (buf == NULL) {
 158                     /* Throw data away */
 159                     _XEatData(dpy, compsize);
 160                     __glXSetError(gc, GL_OUT_OF_MEMORY);
 161
 162                     UnlockDisplay(dpy);
 163                     SyncHandle();
 164                     return;
 165                 } else {
 166                     int extra;
 167
 168                     extra = 4 - (widthsize & 3);
 169                     _XRead(dpy, (char *)buf, widthsize);
 170                     if (extra < 4) {
 171                         _XEatData(dpy, extra);
 172                     }
 173
 174                     __glEmptyImage(gc, 1, width, 1, 1, format, type, buf,
 175                                    row);
 176
 177                     extra = 4 - (heightsize & 3);
 178                     _XRead(dpy, (char *)buf, heightsize);
 179                     if (extra < 4) {
 180                         _XEatData(dpy, extra);
 181                     }
 182
 183                     __glEmptyImage(gc, 1, height, 1, 1, format, type, buf,
 184                                    column);
 185
 186                     Xfree((char*) buf);
 187                 }
 188             }
 189         }
 190     }
 191 }