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 "glheader.h"
  38 #include "packsingle.h"
  39 #include "indirect.h"
  40 #include "dispatch.h"
  41 #include "glapi.h"
  42 #include "glthread.h"
  43 #include "glapioffsets.h"
  44 #include <GL/glxproto.h>
  45
  46 void __indirect_glGetSeparableFilter(GLenum target, GLenum format, GLenum type,
  47                           GLvoid *row, GLvoid *column, GLvoid *span)
  48 {
  49     __GLX_SINGLE_DECLARE_VARIABLES();
  50     const __GLXattribute * state;
  51     xGLXGetSeparableFilterReply reply;
  52     GLubyte *rowBuf, *colBuf;
  53
  54     if (!dpy) return;
  55     __GLX_SINGLE_LOAD_VARIABLES();
  56     state = gc->client_state_private;
  57
  58     /* Send request */
  59     __GLX_SINGLE_BEGIN(X_GLsop_GetSeparableFilter, __GLX_PAD(13));
  60     __GLX_SINGLE_PUT_LONG(0,target);
  61     __GLX_SINGLE_PUT_LONG(4,format);
  62     __GLX_SINGLE_PUT_LONG(8,type);
  63     __GLX_SINGLE_PUT_CHAR(12,state->storePack.swapEndian);
  64     __GLX_SINGLE_READ_XREPLY();
  65     compsize = reply.length << 2;
  66
  67     if (compsize != 0) {
  68         GLint width, height;
  69         GLint widthsize, heightsize;
  70
  71         width = reply.width;
  72         height = reply.height;
  73
  74         widthsize = __glImageSize(width,1,1,format, type, 0);
  75         heightsize = __glImageSize(height,1,1,format, type, 0);
  76
  77         /* Allocate a holding buffer to transform the data from */
  78         rowBuf = (GLubyte*) Xmalloc(widthsize);
  79         if (!rowBuf) {
  80             /* Throw data away */
  81             _XEatData(dpy, compsize);
  82             __glXSetError(gc, GL_OUT_OF_MEMORY);
  83             UnlockDisplay(dpy);
  84             SyncHandle();
  85             return;
  86         } else {
  87             __GLX_SINGLE_GET_CHAR_ARRAY(((char*)rowBuf),widthsize);
  88             __glEmptyImage(gc, 1, width, 1, 1, format, type, rowBuf, row);
  89             Xfree((char*) rowBuf);
  90         }
  91         colBuf = (GLubyte*) Xmalloc(heightsize);
  92         if (!colBuf) {
  93             /* Throw data away */
  94             _XEatData(dpy, compsize - __GLX_PAD(widthsize));
  95             __glXSetError(gc, GL_OUT_OF_MEMORY);
  96             UnlockDisplay(dpy);
  97             SyncHandle();
  98             return;
  99         } else {
 100             __GLX_SINGLE_GET_CHAR_ARRAY(((char*)colBuf),heightsize);
 101             __glEmptyImage(gc, 1, height, 1, 1, format, type, colBuf, column);
 102             Xfree((char*) colBuf);
 103         }
 104     } else {
 105         /*
 106         ** don't modify user's buffer.
 107         */
 108     }
 109     __GLX_SINGLE_END();
 110
 111 }
 112
 113
 114 #define CONCAT(a,b) a ## b
 115 #define NAME(o) CONCAT(gl_dispatch_stub_, o)
 116
 117 void NAME(_gloffset_GetSeparableFilter)(GLenum target, GLenum format, GLenum type,
 118                                         GLvoid *row, GLvoid *column, GLvoid *span)
 119 {
 120     __GLXcontext * const gc = __glXGetCurrentContext();
 121
 122     if (gc->driContext) {
 123         CALL_GetSeparableFilter(GET_DISPATCH(),
 124                                 (target, format, type, row, column, span));
 125         return;
 126     }
 127     else {
 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                   (GLubyte*) Xmalloc((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                 } else {
 168                     int extra;
 169
 170                     extra = 4 - (widthsize & 3);
 171                     _XRead(dpy, (char *)buf, widthsize);
 172                     if (extra < 4) {
 173                         _XEatData(dpy, extra);
 174                     }
 175
 176                     __glEmptyImage(gc, 1, width, 1, 1, format, type, buf,
 177                                    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,
 186                                    column);
 187
 188                     Xfree((char*) buf);
 189                 }
 190             }
 191         }
 192     }
 193 }