src/glx/x11/pixelstore.c

   1 /* $XFree86: xc/lib/GL/glx/pixelstore.c,v 1.4 2004/01/28 18:11:43 alanh 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 "glxclient.h"
  38
  39 /*
  40 ** Specify parameters that control the storage format of pixel arrays.
  41 */
  42 void __indirect_glPixelStoref(GLenum pname, GLfloat param)
  43 {
  44     __GLXcontext *gc = __glXGetCurrentContext();
  45     __GLXattribute * state = gc->client_state_private;
  46     Display *dpy = gc->currentDpy;
  47     GLuint a;
  48
  49     if (!dpy) return;
  50
  51     switch (pname) {
  52       case GL_PACK_ROW_LENGTH:
  53         a = (GLuint) (param + 0.5);
  54         if (((GLint) a) < 0) {
  55             __glXSetError(gc, GL_INVALID_VALUE);
  56             return;
  57         }
  58         state->storePack.rowLength = a;
  59         break;
  60       case GL_PACK_IMAGE_HEIGHT:
  61         a = (GLuint) (param + 0.5);
  62         if (((GLint) a) < 0) {
  63             __glXSetError(gc, GL_INVALID_VALUE);
  64             return;
  65         }
  66         state->storePack.imageHeight = a;
  67         break;
  68       case GL_PACK_SKIP_ROWS:
  69         a = (GLuint) (param + 0.5);
  70         if (((GLint) a) < 0) {
  71             __glXSetError(gc, GL_INVALID_VALUE);
  72             return;
  73         }
  74         state->storePack.skipRows = a;
  75         break;
  76       case GL_PACK_SKIP_PIXELS:
  77         a = (GLuint) (param + 0.5);
  78         if (((GLint) a) < 0) {
  79             __glXSetError(gc, GL_INVALID_VALUE);
  80             return;
  81         }
  82         state->storePack.skipPixels = a;
  83         break;
  84       case GL_PACK_SKIP_IMAGES:
  85         a = (GLuint) (param + 0.5);
  86         if (((GLint) a) < 0) {
  87             __glXSetError(gc, GL_INVALID_VALUE);
  88             return;
  89         }
  90         state->storePack.skipImages = a;
  91         break;
  92       case GL_PACK_ALIGNMENT:
  93         a = (GLint) (param + 0.5);
  94         switch (a) {
  95           case 1: case 2: case 4: case 8:
  96             state->storePack.alignment = a;
  97             break;
  98           default:
  99             __glXSetError(gc, GL_INVALID_VALUE);
 100             return;
 101         }
 102         break;
 103       case GL_PACK_SWAP_BYTES:
 104         state->storePack.swapEndian = (param != 0);
 105         break;
 106       case GL_PACK_LSB_FIRST:
 107         state->storePack.lsbFirst = (param != 0);
 108         break;
 109
 110       case GL_UNPACK_ROW_LENGTH:
 111         a = (GLuint) (param + 0.5);
 112         if (((GLint) a) < 0) {
 113             __glXSetError(gc, GL_INVALID_VALUE);
 114             return;
 115         }
 116         state->storeUnpack.rowLength = a;
 117         break;
 118       case GL_UNPACK_IMAGE_HEIGHT:
 119         a = (GLuint) (param + 0.5);
 120         if (((GLint) a) < 0) {
 121             __glXSetError(gc, GL_INVALID_VALUE);
 122             return;
 123         }
 124         state->storeUnpack.imageHeight = a;
 125         break;
 126       case GL_UNPACK_SKIP_ROWS:
 127         a = (GLuint) (param + 0.5);
 128         if (((GLint) a) < 0) {
 129             __glXSetError(gc, GL_INVALID_VALUE);
 130             return;
 131         }
 132         state->storeUnpack.skipRows = a;
 133         break;
 134       case GL_UNPACK_SKIP_PIXELS:
 135         a = (GLuint) (param + 0.5);
 136         if (((GLint) a) < 0) {
 137             __glXSetError(gc, GL_INVALID_VALUE);
 138             return;
 139         }
 140         state->storeUnpack.skipPixels = a;
 141         break;
 142       case GL_UNPACK_SKIP_IMAGES:
 143         a = (GLuint) (param + 0.5);
 144         if (((GLint) a) < 0) {
 145             __glXSetError(gc, GL_INVALID_VALUE);
 146             return;
 147         }
 148         state->storeUnpack.skipImages = a;
 149         break;
 150       case GL_UNPACK_ALIGNMENT:
 151         a = (GLint) (param + 0.5);
 152         switch (a) {
 153           case 1: case 2: case 4: case 8:
 154             state->storeUnpack.alignment = a;
 155             break;
 156           default:
 157             __glXSetError(gc, GL_INVALID_VALUE);
 158             return;
 159         }
 160         break;
 161       case GL_UNPACK_SWAP_BYTES:
 162         state->storeUnpack.swapEndian = (param != 0);
 163         break;
 164       case GL_UNPACK_LSB_FIRST:
 165         state->storeUnpack.lsbFirst = (param != 0);
 166         break;
 167       default:
 168         /*
 169         ** NOTE: there are currently no pixel storage commands that need to
 170         ** be sent to the server.  This may change in future versions
 171         ** of the API, however.
 172         */
 173         __glXSetError(gc, GL_INVALID_ENUM);
 174         break;
 175     }
 176 }
 177
 178 void __indirect_glPixelStorei(GLenum pname, GLint param)
 179 {
 180     __GLXcontext *gc = __glXGetCurrentContext();
 181     __GLXattribute * state = gc->client_state_private;
 182     Display *dpy = gc->currentDpy;
 183
 184     if (!dpy) return;
 185
 186     switch (pname) {
 187       case GL_PACK_ROW_LENGTH:
 188         if (param < 0) {
 189             __glXSetError(gc, GL_INVALID_VALUE);
 190             return;
 191         }
 192         state->storePack.rowLength = param;
 193         break;
 194       case GL_PACK_IMAGE_HEIGHT:
 195         if (param < 0) {
 196             __glXSetError(gc, GL_INVALID_VALUE);
 197             return;
 198         }
 199         state->storePack.imageHeight = param;
 200         break;
 201       case GL_PACK_SKIP_ROWS:
 202         if (param < 0) {
 203             __glXSetError(gc, GL_INVALID_VALUE);
 204             return;
 205         }
 206         state->storePack.skipRows = param;
 207         break;
 208       case GL_PACK_SKIP_PIXELS:
 209         if (param < 0) {
 210             __glXSetError(gc, GL_INVALID_VALUE);
 211             return;
 212         }
 213         state->storePack.skipPixels = param;
 214         break;
 215       case GL_PACK_SKIP_IMAGES:
 216         if (param < 0) {
 217             __glXSetError(gc, GL_INVALID_VALUE);
 218             return;
 219         }
 220         state->storePack.skipImages = param;
 221         break;
 222       case GL_PACK_ALIGNMENT:
 223         switch (param) {
 224           case 1: case 2: case 4: case 8:
 225             state->storePack.alignment = param;
 226             break;
 227           default:
 228             __glXSetError(gc, GL_INVALID_VALUE);
 229             return;
 230         }
 231         break;
 232       case GL_PACK_SWAP_BYTES:
 233         state->storePack.swapEndian = (param != 0);
 234         break;
 235       case GL_PACK_LSB_FIRST:
 236         state->storePack.lsbFirst = (param != 0);
 237         break;
 238
 239       case GL_UNPACK_ROW_LENGTH:
 240         if (param < 0) {
 241             __glXSetError(gc, GL_INVALID_VALUE);
 242             return;
 243         }
 244         state->storeUnpack.rowLength = param;
 245         break;
 246       case GL_UNPACK_IMAGE_HEIGHT:
 247         if (param < 0) {
 248             __glXSetError(gc, GL_INVALID_VALUE);
 249             return;
 250         }
 251         state->storeUnpack.imageHeight = param;
 252         break;
 253       case GL_UNPACK_SKIP_ROWS:
 254         if (param < 0) {
 255             __glXSetError(gc, GL_INVALID_VALUE);
 256             return;
 257         }
 258         state->storeUnpack.skipRows = param;
 259         break;
 260       case GL_UNPACK_SKIP_PIXELS:
 261         if (param < 0) {
 262             __glXSetError(gc, GL_INVALID_VALUE);
 263             return;
 264         }
 265         state->storeUnpack.skipPixels = param;
 266         break;
 267       case GL_UNPACK_SKIP_IMAGES:
 268         if (param < 0) {
 269             __glXSetError(gc, GL_INVALID_VALUE);
 270             return;
 271         }
 272         state->storeUnpack.skipImages = param;
 273         break;
 274       case GL_UNPACK_ALIGNMENT:
 275         switch (param) {
 276           case 1: case 2: case 4: case 8:
 277             state->storeUnpack.alignment = param;
 278             break;
 279           default:
 280             __glXSetError(gc, GL_INVALID_VALUE);
 281             return;
 282         }
 283         break;
 284       case GL_UNPACK_SWAP_BYTES:
 285         state->storeUnpack.swapEndian = (param != 0);
 286         break;
 287       case GL_UNPACK_LSB_FIRST:
 288         state->storeUnpack.lsbFirst = (param != 0);
 289         break;
 290       default:
 291         /*
 292         ** NOTE: there are currently no pixel storage commands that need to
 293         ** be sent to the server.  This may change in future versions
 294         ** of the API, however.
 295         */
 296         __glXSetError(gc, GL_INVALID_ENUM);
 297         break;
 298     }
 299 }