src/glx/x11/packsingle.h

   1 /* -*- mode: c; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3; coding: utf-8-unix -*- */
   2 #ifndef __GLX_packsingle_h__
   3 #define __GLX_packsingle_h__
   4
   5 /*
   6  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   7  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice including the dates of first publication and
  17  * either this permission notice or a reference to
  18  * http://oss.sgi.com/projects/FreeB/
  19  * shall be included in all copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  22  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  24  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  25  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  26  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  27  * SOFTWARE.
  28  *
  29  * Except as contained in this notice, the name of Silicon Graphics, Inc.
  30  * shall not be used in advertising or otherwise to promote the sale, use or
  31  * other dealings in this Software without prior written authorization from
  32  * Silicon Graphics, Inc.
  33  */
  34
  35 #include "packrender.h"
  36
  37 /*
  38 ** The macros in this header convert wire protocol data types to the client
  39 ** machine's native data types.  The header is part of the porting layer of
  40 ** the client library, and it is intended that hardware vendors will rewrite
  41 ** this header to suit their own machines.
  42 */
  43
  44 /*
  45 ** Dummy define to make the GetReqExtra macro happy.  The value is not
  46 ** used, but instead the code in __GLX_SINGLE_BEGIN issues its own store
  47 ** to req->reqType with the proper code (our extension code).
  48 */
  49 #define X_GLXSingle 0
  50
  51 /* Declare common variables used during a single command */
  52 #define __GLX_SINGLE_DECLARE_VARIABLES()         \
  53    __GLXcontext *gc = __glXGetCurrentContext();  \
  54    GLubyte *pc, *pixelHeaderPC;                  \
  55    GLuint compsize, cmdlen;                      \
  56    Display *dpy = gc->currentDpy;                \
  57    xGLXSingleReq *req
  58
  59 #define __GLX_SINGLE_LOAD_VARIABLES()           \
  60    pc = gc->pc;                                 \
  61    /* Muffle compilers */                       \
  62    pixelHeaderPC = 0;  (void)pixelHeaderPC;     \
  63    compsize = 0;       (void)compsize;          \
  64    cmdlen = 0;         (void)cmdlen
  65
  66 /* Start a single command */
  67 #define __GLX_SINGLE_BEGIN(opcode,bytes)        \
  68    if (dpy) {                                   \
  69    (void) __glXFlushRenderBuffer(gc, pc);       \
  70    LockDisplay(dpy);                            \
  71    GetReqExtra(GLXSingle,bytes,req);            \
  72    req->reqType = gc->majorOpcode;              \
  73    req->glxCode = opcode;                       \
  74    req->contextTag = gc->currentContextTag;     \
  75    pc = ((GLubyte *)(req) + sz_xGLXSingleReq)
  76
  77 /* End a single command */
  78 #define __GLX_SINGLE_END()       \
  79    UnlockDisplay(dpy);           \
  80    SyncHandle();                 \
  81    }
  82
  83 /* Store data to sending for a single command */
  84 #define __GLX_SINGLE_PUT_CHAR(offset,a)         \
  85    *((INT8 *) (pc + offset)) = a
  86
  87 #ifndef CRAY
  88 #define __GLX_SINGLE_PUT_SHORT(offset,a)        \
  89    *((INT16 *) (pc + offset)) = a
  90
  91 #define __GLX_SINGLE_PUT_LONG(offset,a)         \
  92    *((INT32 *) (pc + offset)) = a
  93
  94 #define __GLX_SINGLE_PUT_FLOAT(offset,a)        \
  95    *((FLOAT32 *) (pc + offset)) = a
  96
  97 #else
  98 #define __GLX_SINGLE_PUT_SHORT(offset,a)        \
  99    { GLubyte *cp = (pc+offset);                    \
 100       int shift = (64-16) - ((int)(cp) >> (64-6));                      \
 101       *(int *)cp = (*(int *)cp & ~(0xffff << shift)) | ((a & 0xffff) << shift); }
 102
 103 #define __GLX_SINGLE_PUT_LONG(offset,a)         \
 104    { GLubyte *cp = (pc+offset);                    \
 105       int shift = (64-32) - ((int)(cp) >> (64-6));                      \
 106       *(int *)cp = (*(int *)cp & ~(0xffffffff << shift)) | ((a & 0xffffffff) << shift); }
 107
 108 #define __GLX_SINGLE_PUT_FLOAT(offset,a)        \
 109    gl_put_float(pc + offset, a)
 110 #endif
 111
 112 /* Read support macros */
 113 #define __GLX_SINGLE_READ_XREPLY()                    \
 114    (void) _XReply(dpy, (xReply*) &reply, 0, False)
 115
 116 #define __GLX_SINGLE_GET_RETVAL(a,cast)         \
 117    a = (cast) reply.retval
 118
 119 #define __GLX_SINGLE_GET_SIZE(a)                \
 120    a = (GLint) reply.size
 121
 122 #ifndef _CRAY
 123 #define __GLX_SINGLE_GET_CHAR(p)                \
 124    *p = *(GLbyte *)&reply.pad3;
 125
 126 #define __GLX_SINGLE_GET_SHORT(p)               \
 127    *p = *(GLshort *)&reply.pad3;
 128
 129 #define __GLX_SINGLE_GET_LONG(p)                \
 130    *p = *(GLint *)&reply.pad3;
 131
 132 #define __GLX_SINGLE_GET_FLOAT(p)               \
 133    *p = *(GLfloat *)&reply.pad3;
 134
 135 #else
 136 #define __GLX_SINGLE_GET_CHAR(p)                \
 137    *p = reply.pad3 >> 24;
 138
 139 #define __GLX_SINGLE_GET_SHORT(p)               \
 140    {int t = reply.pad3 >> 16;                            \
 141       *p = (t & 0x8000) ? (t | ~0xffff) : (t & 0xffff);}
 142
 143 #define __GLX_SINGLE_GET_LONG(p)                \
 144    {int t = reply.pad3;                                              \
 145       *p = (t & 0x80000000) ? (t | ~0xffffffff) : (t & 0xffffffff);}
 146
 147 #define PAD3OFFSET 16
 148 #define __GLX_SINGLE_GET_FLOAT(p)                        \
 149    *p = gl_ntoh_float((GLubyte *)&reply + PAD3OFFSET);
 150
 151 #define __GLX_SINGLE_GET_DOUBLE(p)                       \
 152    *p = gl_ntoh_double((GLubyte *)&reply + PAD3OFFSET);
 153
 154 extern float gl_ntoh_float(GLubyte *);
 155 extern float gl_ntoh_double(GLubyte *);
 156 #endif
 157
 158 #ifndef _CRAY
 159
 160 #ifdef __GLX_ALIGN64
 161 #define __GLX_SINGLE_GET_DOUBLE(p)              \
 162    __GLX_MEM_COPY(p, &reply.pad3, 8)
 163 #else
 164 #define __GLX_SINGLE_GET_DOUBLE(p)              \
 165    *p = *(GLdouble *)&reply.pad3
 166 #endif
 167
 168 #endif
 169
 170 /* Get an array of typed data */
 171 #define __GLX_SINGLE_GET_VOID_ARRAY(a,alen)     \
 172    {                                            \
 173       GLint slop = alen*__GLX_SIZE_INT8 & 3;    \
 174       _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT8);  \
 175       if (slop) _XEatData(dpy,4-slop);             \
 176    }
 177
 178 #define __GLX_SINGLE_GET_CHAR_ARRAY(a,alen)     \
 179    {                                            \
 180       GLint slop = alen*__GLX_SIZE_INT8 & 3;    \
 181       _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT8);  \
 182       if (slop) _XEatData(dpy,4-slop);             \
 183    }
 184
 185
 186 #define __GLX_SINGLE_GET_SHORT_ARRAY(a,alen)    \
 187    {                                            \
 188       GLint slop = (alen*__GLX_SIZE_INT16) & 3;    \
 189       _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT16); \
 190       if (slop) _XEatData(dpy,4-slop);             \
 191    }
 192
 193 #define __GLX_SINGLE_GET_LONG_ARRAY(a,alen)        \
 194    _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT32);
 195
 196 #ifndef _CRAY
 197 #define __GLX_SINGLE_GET_FLOAT_ARRAY(a,alen)       \
 198    _XRead(dpy,(char *)a,alen*__GLX_SIZE_FLOAT32);
 199
 200 #define __GLX_SINGLE_GET_DOUBLE_ARRAY(a,alen)      \
 201    _XRead(dpy,(char *)a,alen*__GLX_SIZE_FLOAT64);
 202
 203 #else
 204 #define __GLX_SINGLE_GET_FLOAT_ARRAY(a,alen)    \
 205    gl_get_float_array(dpy,a,alen);
 206
 207 #define __GLX_SINGLE_GET_DOUBLE_ARRAY(a,alen)   \
 208    gl_get_double_array(dpy, a, alen);
 209
 210 extern void gl_get_float_array(Display * dpy, float *a, int alen);
 211 extern void gl_get_double_array(Display * dpy, double *a, int alen);
 212 #endif
 213
 214 #endif /* !__GLX_packsingle_h__ */