src/mapi/glapi/glapi_priv.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef _GLAPI_PRIV_H
  27 #define _GLAPI_PRIV_H
  28
  29
  30 #define GL_GLEXT_PROTOTYPES
  31 #include "GL/gl.h"
  32 #include "GL/glext.h"
  33
  34 typedef int GLclampx;
  35
  36 #include "glapi/glapi.h"
  37
  38
  39 #ifdef __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 /* entrypoint */
  44
  45 extern void
  46 init_glapi_relocs_once(void);
  47
  48
  49 extern _glapi_proc
  50 generate_entrypoint(unsigned int functionOffset);
  51
  52
  53 extern void
  54 fill_in_entrypoint_offset(_glapi_proc entrypoint, unsigned int offset);
  55
  56
  57 extern _glapi_proc
  58 get_entrypoint_address(unsigned int functionOffset);
  59
  60
  61 /**
  62  * Size (in bytes) of dispatch function (entrypoint).
  63  */
  64 #if defined(USE_X86_ASM)
  65 # if defined(USE_ELF_TLS)
  66 #  define DISPATCH_FUNCTION_SIZE  16
  67 # else
  68 #  define DISPATCH_FUNCTION_SIZE  32
  69 # endif
  70 #endif
  71
  72 #if defined(USE_X64_64_ASM)
  73 # if defined(USE_ELF_TLS)
  74 #  define DISPATCH_FUNCTION_SIZE  16
  75 # endif
  76 #endif
  77
  78
  79 /**
  80  * Number of extension functions which we can dynamically add at runtime.
  81  *
  82  * Number of extension functions is also subject to the size of backing exec
  83  * mem we allocate. For the common case of dispatch stubs with size 16 bytes,
  84  * the two limits will be hit simultaneously. For larger dispatch function
  85  * sizes, MAX_EXTENSION_FUNCS is effectively reduced.
  86  */
  87 #define MAX_EXTENSION_FUNCS 256
  88
  89
  90 #ifdef __cplusplus
  91 }
  92 #endif
  93
  94 #endif