xorg-server-1.4/GL/glx/renderpixswap.c

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 */
  35
  36 #define NEED_REPLIES
  37 #ifdef HAVE_DIX_CONFIG_H
  38 #include <dix-config.h>
  39 #endif
  40
  41 #include "glxserver.h"
  42 #include "unpack.h"
  43 #include "indirect_dispatch.h"
  44 #include "glapitable.h"
  45 #include "glapi.h"
  46 #include "glthread.h"
  47 #include "dispatch.h"
  48
  49 void __glXDispSwap_SeparableFilter2D(GLbyte *pc)
  50 {
  51     __GLXdispatchConvolutionFilterHeader *hdr =
  52                                 (__GLXdispatchConvolutionFilterHeader *) pc;
  53     GLint hdrlen, image1len;
  54     __GLX_DECLARE_SWAP_VARIABLES;
  55
  56     hdrlen = __GLX_PAD(__GLX_CONV_FILT_CMD_HDR_SIZE);
  57
  58     __GLX_SWAP_INT((GLbyte *)&hdr->rowLength);
  59     __GLX_SWAP_INT((GLbyte *)&hdr->skipRows);
  60     __GLX_SWAP_INT((GLbyte *)&hdr->skipPixels);
  61     __GLX_SWAP_INT((GLbyte *)&hdr->alignment);
  62
  63     __GLX_SWAP_INT((GLbyte *)&hdr->target);
  64     __GLX_SWAP_INT((GLbyte *)&hdr->internalformat);
  65     __GLX_SWAP_INT((GLbyte *)&hdr->width);
  66     __GLX_SWAP_INT((GLbyte *)&hdr->height);
  67     __GLX_SWAP_INT((GLbyte *)&hdr->format);
  68     __GLX_SWAP_INT((GLbyte *)&hdr->type);
  69
  70     /*
  71     ** Just invert swapBytes flag; the GL will figure out if it needs to swap
  72     ** the pixel data.
  73     */
  74     CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SWAP_BYTES, !hdr->swapBytes) );
  75     CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_LSB_FIRST, hdr->lsbFirst) );
  76     CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH, hdr->rowLength) );
  77     CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS, hdr->skipRows) );
  78     CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS, hdr->skipPixels) );
  79     CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ALIGNMENT, hdr->alignment) );
  80
  81     /* XXX check this usage - internal code called
  82     ** a version without the packing parameters
  83     */
  84     image1len = __glXImageSize(hdr->format, hdr->type, 0, hdr->width, 1, 1,
  85                                0, hdr->rowLength, 0, hdr->skipRows,
  86                                hdr->alignment);
  87     image1len = __GLX_PAD(image1len);
  88
  89
  90     CALL_SeparableFilter2D( GET_DISPATCH(), (hdr->target, hdr->internalformat,
  91                  hdr->width, hdr->height, hdr->format, hdr->type,
  92                  ((GLubyte *)hdr+hdrlen), ((GLubyte *)hdr+hdrlen+image1len)) );
  93 }