src/glx/x11/packvendpriv.h

   1 /* $XFree86: xc/lib/GL/glx/packvendpriv.h,v 1.5tsi Exp $ */
   2 #ifndef __GLX_packvendpriv_h__
   3 #define __GLX_packvendpriv_h__
   4
   5 /*
   6 ** License Applicability. Except to the extent portions of this file are
   7 ** made subject to an alternative license as permitted in the SGI Free
   8 ** Software License B, Version 1.1 (the "License"), the contents of this
   9 ** file are subject only to the provisions of the License. You may not use
  10 ** this file except in compliance with the License. You may obtain a copy
  11 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
  12 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
  13 **
  14 ** http://oss.sgi.com/projects/FreeB
  15 **
  16 ** Note that, as provided in the License, the Software is distributed on an
  17 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  18 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  19 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  20 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  21 **
  22 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  23 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  24 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  25 ** Copyright in any portions created by third parties is as indicated
  26 ** elsewhere herein. All Rights Reserved.
  27 **
  28 ** Additional Notice Provisions: The application programming interfaces
  29 ** established by SGI in conjunction with the Original Code are The
  30 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  31 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  32 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  33 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  34 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  35 ** published by SGI, but has not been independently verified as being
  36 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  37 **
  38 */
  39
  40 #include "packrender.h"
  41
  42 /*
  43 ** The macros in this header convert wire protocol data types to the client
  44 ** machine's native data types.  The header is part of the porting layer of
  45 ** the client library, and it is intended that hardware vendors will rewrite
  46 ** this header to suit their own machines.
  47 */
  48
  49 /*
  50 ** Dummy define to make the GetReqExtra macro happy.  The value is not
  51 ** used, but instead the code in __GLX_VENDPRIV_BEGIN issues its own store
  52 ** to req->reqType with the proper code (our extension code).
  53 */
  54 #define X_GLXVendpriv 0
  55
  56 /* Declare common variables used during a single command */
  57 #define __GLX_VENDPRIV_DECLARE_VARIABLES()       \
  58     __GLXcontext *gc = __glXGetCurrentContext(); \
  59     GLubyte *pc, *pixelHeaderPC;                 \
  60     GLuint compsize, cmdlen;                     \
  61     Display *dpy = gc->currentDpy;               \
  62     xGLXVendorPrivateReq *req
  63
  64 #define __GLX_VENDPRIV_LOAD_VARIABLES() \
  65     pc = gc->pc;            \
  66     /* Muffle compilers */                   \
  67     pixelHeaderPC = 0;  (void)pixelHeaderPC; \
  68     compsize = 0;       (void)compsize;      \
  69     cmdlen = 0;         (void)cmdlen
  70
  71 /* Start a vendor private command */
  72 #define __GLX_VENDPRIV_BEGIN(glxcode, opcode,bytes)        \
  73     if (dpy) {                                             \
  74         (void) __glXFlushRenderBuffer(gc, pc);             \
  75         LockDisplay(dpy);                                  \
  76         GetReqExtra(GLXVendorPrivate,bytes,req);           \
  77         req->reqType = gc->majorOpcode;                    \
  78         req->glxCode = glxcode;                            \
  79         req->vendorCode = opcode;                          \
  80         req->contextTag = gc->currentContextTag;           \
  81         pc = ((GLubyte *)(req) + sz_xGLXVendorPrivateReq)
  82
  83 /* End a vendor private command */
  84 #define __GLX_VENDPRIV_END()                       \
  85         UnlockDisplay(dpy);                        \
  86         SyncHandle();                              \
  87     }
  88
  89 /* Store data to sending for a vendor private command */
  90 #define __GLX_VENDPRIV_PUT_CHAR(offset,a)       \
  91     *((INT8 *) (pc + offset)) = a
  92
  93 #ifndef CRAY
  94 #define __GLX_VENDPRIV_PUT_SHORT(offset,a) \
  95     *((INT16 *) (pc + offset)) = a
  96
  97 #define __GLX_VENDPRIV_PUT_LONG(offset,a)       \
  98     *((INT32 *) (pc + offset)) = a
  99
 100 #define __GLX_VENDPRIV_PUT_FLOAT(offset,a) \
 101     *((FLOAT32 *) (pc + offset)) = a
 102
 103 #else
 104 #define __GLX_VENDPRIV_PUT_SHORT(offset,a) \
 105     { GLubyte *cp = (pc+offset); \
 106       int shift = (64-16) - ((int)(cp) >> (64-6)); \
 107       *(int *)cp = (*(int *)cp & ~(0xffff << shift)) | ((a & 0xffff) << shift); }
 108
 109 #define __GLX_VENDPRIV_PUT_LONG(offset,a) \
 110     { GLubyte *cp = (pc+offset); \
 111       int shift = (64-32) - ((int)(cp) >> (64-6)); \
 112       *(int *)cp = (*(int *)cp & ~(0xffffffff << shift)) | ((a & 0xffffffff) << shift); }
 113
 114 #define __GLX_VENDPRIV_PUT_FLOAT(offset,a) \
 115     gl_put_float(pc + offset, a)
 116 #endif
 117
 118 /* Read support macros */
 119 #define __GLX_VENDPRIV_READ_XREPLY()                \
 120     (void) _XReply(dpy, (xReply*) &reply, 0, False)
 121
 122 #define __GLX_VENDPRIV_GET_RETVAL(a,cast)       \
 123     a = (cast) reply.retval
 124
 125 #define __GLX_VENDPRIV_GET_SIZE(a) \
 126     a = (GLint) reply.size
 127
 128 #ifndef _CRAY
 129 #define __GLX_VENDPRIV_GET_CHAR(p) \
 130     *p = *(GLbyte *)&reply.pad3;
 131
 132 #define __GLX_VENDPRIV_GET_SHORT(p) \
 133     *p = *(GLshort *)&reply.pad3;
 134
 135 #define __GLX_VENDPRIV_GET_LONG(p) \
 136     *p = *(GLint *)&reply.pad3;
 137
 138 #define __GLX_VENDPRIV_GET_FLOAT(p) \
 139     *p = *(GLfloat *)&reply.pad3;
 140
 141 #else
 142 #define __GLX_VENDPRIV_GET_CHAR(p) \
 143     *p = reply.pad3 >> 24;
 144
 145 #define __GLX_VENDPRIV_GET_SHORT(p) \
 146     {int t = reply.pad3 >> 16; \
 147      *p = (t & 0x8000) ? (t | ~0xffff) : (t & 0xffff);}
 148
 149 #define __GLX_VENDPRIV_GET_LONG(p) \
 150     {int t = reply.pad3; \
 151      *p = (t & 0x80000000) ? (t | ~0xffffffff) : (t & 0xffffffff);}
 152
 153 #define PAD3OFFSET 16
 154 #define __GLX_VENDPRIV_GET_FLOAT(p) \
 155     *p = gl_ntoh_float((GLubyte *)&reply + PAD3OFFSET);
 156
 157 #define __GLX_VENDPRIV_GET_DOUBLE(p) \
 158     *p = gl_ntoh_double((GLubyte *)&reply + PAD3OFFSET);
 159
 160 extern float gl_ntoh_float(GLubyte *);
 161 extern float gl_ntoh_double(GLubyte *);
 162 #endif
 163
 164 #ifndef _CRAY
 165
 166 #ifdef __GLX_ALIGN64
 167 #define __GLX_VENDPRIV_GET_DOUBLE(p) \
 168     __GLX_MEM_COPY(p, &reply.pad3, 8)
 169 #else
 170 #define __GLX_VENDPRIV_GET_DOUBLE(p) \
 171     *p = *(GLdouble *)&reply.pad3
 172 #endif
 173
 174 #endif
 175
 176 /* Get an array of typed data */
 177 #define __GLX_VENDPRIV_GET_VOID_ARRAY(a,alen) \
 178 {                                               \
 179     GLint slop = alen*__GLX_SIZE_INT8 & 3;      \
 180     _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT8);         \
 181     if (slop) _XEatData(dpy,4-slop);            \
 182 }
 183
 184 #define __GLX_VENDPRIV_GET_CHAR_ARRAY(a,alen) \
 185 {                                               \
 186     GLint slop = alen*__GLX_SIZE_INT8 & 3;      \
 187     _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT8);         \
 188     if (slop) _XEatData(dpy,4-slop);            \
 189 }
 190
 191
 192 #define __GLX_VENDPRIV_GET_SHORT_ARRAY(a,alen) \
 193 {                                               \
 194     GLint slop = (alen*__GLX_SIZE_INT16) & 3;   \
 195     _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT16);        \
 196     if (slop) _XEatData(dpy,4-slop);            \
 197 }
 198
 199 #define __GLX_VENDPRIV_GET_LONG_ARRAY(a,alen) \
 200     _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT32);
 201
 202 #ifndef _CRAY
 203 #define __GLX_VENDPRIV_GET_FLOAT_ARRAY(a,alen) \
 204     _XRead(dpy,(char *)a,alen*__GLX_SIZE_FLOAT32);
 205
 206 #define __GLX_VENDPRIV_GET_DOUBLE_ARRAY(a,alen) \
 207     _XRead(dpy,(char *)a,alen*__GLX_SIZE_FLOAT64);
 208
 209 #else
 210 #define __GLX_VENDPRIV_GET_FLOAT_ARRAY(a,alen) \
 211     gl_get_float_array(dpy,a,alen);
 212
 213 #define __GLX_VENDPRIV_GET_DOUBLE_ARRAY(a,alen) \
 214     gl_get_double_array(dpy, a, alen);
 215
 216 extern void gl_get_float_array(Display *dpy, float *a, int alen);
 217 extern void gl_get_double_array(Display *dpy, double *a, int alen);
 218 #endif
 219
 220 #endif /* !__GLX_packvendpriv_h__ */