src/glx/packsingle.h

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