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glapi.cpp
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/* $Id: glapi.c,v 1.67 2002/10/29 15:03:14 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 4.1
*
* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This file manages the OpenGL API dispatch layer.
* The dispatch table (struct _glapi_table) is basically just a list
* of function pointers.
* There are functions to set/get the current dispatch table for the
* current thread and to manage registration/dispatch of dynamically
* added extension functions.
*
* It's intended that this file and the other glapi*.[ch] files are
* flexible enough to be reused in several places: XFree86, DRI-
* based libGL.so, and perhaps the SGI SI.
*
* NOTE: There are no dependencies on Mesa in this code.
*
* Versions (API changes):
* 2000/02/23 - original version for Mesa 3.3 and XFree86 4.0
* 2001/01/16 - added dispatch override feature for Mesa 3.5
* 2002/06/28 - added _glapi_set_warning_func(), Mesa 4.1.
* 2002/10/01 - _glapi_get_proc_address() will now generate new entrypoints
* itself (using offset ~0). _glapi_add_entrypoint() can be
* called afterward and it'll fill in the correct dispatch
* offset. This allows DRI libGL to avoid probing for DRI
* drivers! No changes to the public glapi interface.
*/
#include "glheader.h"
#include "glapi.h"
#include "glapioffsets.h"
#include "glapitable.h"
#include "glthread.h"
/***** BEGIN NO-OP DISPATCH *****/
static GLboolean WarnFlag = GL_FALSE;
static _glapi_warning_func warning_func;
/*
* Enable/disable printing of warning messages.
*/
void
_glapi_noop_enable_warnings(GLboolean enable)
{
WarnFlag = enable;
}
/*
* Register a callback function for reporting errors.
*/
void
_glapi_set_warning_func( _glapi_warning_func func )
{
warning_func = func;
}
static GLboolean
warn(void)
{
if ((WarnFlag || getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG"))
&& warning_func) {
return GL_TRUE;
}
else {
return GL_FALSE;
}
}
#define KEYWORD1 static
#define KEYWORD2
#define NAME(func) NoOp##func
#define F NULL
#define DISPATCH(func, args, msg) \
if (warn()) { \
warning_func(NULL, "GL User Error: called without context:"); \
warning_func msg; \
}
#define RETURN_DISPATCH(func, args, msg) \
if (warn()) { \
warning_func(NULL, "GL User Error: called without context:"); \
warning_func msg; \
} \
return 0
#define DISPATCH_TABLE_NAME __glapi_noop_table
#define UNUSED_TABLE_NAME __usused_noop_functions
#define TABLE_ENTRY(name) (void *) NoOp##name
static int NoOpUnused(void)
{
if (warn()) {
warning_func(NULL, "GL User Error: calling extension function without a current context\n");
}
return 0;
}
#include "glapitemp.h"
/***** END NO-OP DISPATCH *****/
/***** BEGIN THREAD-SAFE DISPATCH *****/
/* if we support thread-safety, build a special dispatch table for use
* in thread-safety mode (ThreadSafe == GL_TRUE). Each entry in the
* dispatch table will call _glthread_GetTSD() to get the actual dispatch
* table bound to the current thread, then jump through that table.
*/
#if defined(THREADS)
static GLboolean ThreadSafe = GL_FALSE; /* In thread-safe mode? */
static _glthread_TSD DispatchTSD; /* Per-thread dispatch pointer */
static _glthread_TSD RealDispatchTSD; /* only when using override */
static _glthread_TSD ContextTSD; /* Per-thread context pointer */
#define KEYWORD1 static
#define KEYWORD2 GLAPIENTRY
#define NAME(func) _ts_##func
#define DISPATCH(FUNC, ARGS, MESSAGE) \
struct _glapi_table *dispatch; \
dispatch = (struct _glapi_table *) _glthread_GetTSD(&DispatchTSD); \
if (!dispatch) \
dispatch = (struct _glapi_table *) __glapi_noop_table; \
(dispatch->FUNC) ARGS
#define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \
struct _glapi_table *dispatch; \
dispatch = (struct _glapi_table *) _glthread_GetTSD(&DispatchTSD); \
if (!dispatch) \
dispatch = (struct _glapi_table *) __glapi_noop_table; \
return (dispatch->FUNC) ARGS
#define DISPATCH_TABLE_NAME __glapi_threadsafe_table
#define UNUSED_TABLE_NAME __usused_threadsafe_functions
#define TABLE_ENTRY(name) (void *) _ts_##name
static int _ts_Unused(void)
{
return 0;
}
#include "glapitemp.h"
#endif
/***** END THREAD-SAFE DISPATCH *****/
struct _glapi_table *_glapi_Dispatch = (struct _glapi_table *) __glapi_noop_table;
struct _glapi_table *_glapi_RealDispatch = (struct _glapi_table *) __glapi_noop_table;
/* Used when thread safety disabled */
void *_glapi_Context = NULL;
static GLboolean DispatchOverride = GL_FALSE;
/* strdup() is actually not a standard ANSI C or POSIX routine.
* Irix will not define it if ANSI mode is in effect.
*/
static char *
str_dup(const char *str)
{
char *copy;
copy = (char*) malloc(strlen(str) + 1);
if (!copy)
return NULL;
strcpy(copy, str);
return copy;
}
/*
* We should call this periodically from a function such as glXMakeCurrent
* in order to test if multiple threads are being used.
*/
void
_glapi_check_multithread(void)
{
#if defined(THREADS)
if (!ThreadSafe) {
static unsigned long knownID;
static GLboolean firstCall = GL_TRUE;
if (firstCall) {
knownID = _glthread_GetID();
firstCall = GL_FALSE;
}
else if (knownID != _glthread_GetID()) {
ThreadSafe = GL_TRUE;
}
}
if (ThreadSafe) {
/* make sure that this thread's dispatch pointer isn't null */
if (!_glapi_get_dispatch()) {
_glapi_set_dispatch(NULL);
}
}
#endif
}
/*
* Set the current context pointer for this thread.
* The context pointer is an opaque type which should be cast to
* void from the real context pointer type.
*/
void
_glapi_set_context(void *context)
{
#if defined(THREADS)
_glthread_SetTSD(&ContextTSD, context);
if (ThreadSafe)
_glapi_Context = NULL;
else
_glapi_Context = context;
#else
_glapi_Context = context;
#endif
}
/*
* Get the current context pointer for this thread.
* The context pointer is an opaque type which should be cast from
* void to the real context pointer type.
*/
void *
_glapi_get_context(void)
{
#if defined(THREADS)
if (ThreadSafe) {
return _glthread_GetTSD(&ContextTSD);
}
else {
return _glapi_Context;
}
#else
return _glapi_Context;
#endif
}
/*
* Set the global or per-thread dispatch table pointer.
*/
void
_glapi_set_dispatch(struct _glapi_table *dispatch)
{
if (!dispatch) {
/* use the no-op functions */
dispatch = (struct _glapi_table *) __glapi_noop_table;
}
#ifdef DEBUG
else {
_glapi_check_table(dispatch);
}
#endif
#if defined(THREADS)
if (DispatchOverride) {
_glthread_SetTSD(&RealDispatchTSD, (void *) dispatch);
if (ThreadSafe)
_glapi_RealDispatch = (struct _glapi_table*) __glapi_threadsafe_table;
else
_glapi_RealDispatch = dispatch;
}
else {
/* normal operation */
_glthread_SetTSD(&DispatchTSD, (void *) dispatch);
if (ThreadSafe)
_glapi_Dispatch = (struct _glapi_table *) __glapi_threadsafe_table;
else
_glapi_Dispatch = dispatch;
}
#else /*THREADS*/
if (DispatchOverride) {
_glapi_RealDispatch = dispatch;
}
else {
_glapi_Dispatch = dispatch;
}
#endif /*THREADS*/
}
/*
* Return pointer to current dispatch table for calling thread.
*/
struct _glapi_table *
_glapi_get_dispatch(void)
{
#if defined(THREADS)
if (ThreadSafe) {
if (DispatchOverride) {
return (struct _glapi_table *) _glthread_GetTSD(&RealDispatchTSD);
}
else {
return (struct _glapi_table *) _glthread_GetTSD(&DispatchTSD);
}
}
else {
if (DispatchOverride) {
assert(_glapi_RealDispatch);
return _glapi_RealDispatch;
}
else {
assert(_glapi_Dispatch);
return _glapi_Dispatch;
}
}
#else
return _glapi_Dispatch;
#endif
}
/*
* Notes on dispatch overrride:
*
* Dispatch override allows an external agent to hook into the GL dispatch
* mechanism before execution goes into the core rendering library. For
* example, a trace mechanism would insert itself as an overrider, print
* logging info for each GL function, then dispatch to the real GL function.
*
* libGLS (GL Stream library) is another agent that might use override.
*
* We don't allow more than one layer of overriding at this time.
* In the future we may allow nested/layered override. In that case
* _glapi_begin_dispatch_override() will return an override layer,
* _glapi_end_dispatch_override(layer) will remove an override layer
* and _glapi_get_override_dispatch(layer) will return the dispatch
* table for a given override layer. layer = 0 will be the "real"
* dispatch table.
*/
/*
* Return: dispatch override layer number.
*/
int
_glapi_begin_dispatch_override(struct _glapi_table *override)
{
struct _glapi_table *real = _glapi_get_dispatch();
assert(!DispatchOverride); /* can't nest at this time */
DispatchOverride = GL_TRUE;
_glapi_set_dispatch(real);
#if defined(THREADS)
_glthread_SetTSD(&DispatchTSD, (void *) override);
if (ThreadSafe)
_glapi_Dispatch = (struct _glapi_table *) __glapi_threadsafe_table;
else
_glapi_Dispatch = override;
#else
_glapi_Dispatch = override;
#endif
return 1;
}
void
_glapi_end_dispatch_override(int layer)
{
struct _glapi_table *real = _glapi_get_dispatch();
(void) layer;
DispatchOverride = GL_FALSE;
_glapi_set_dispatch(real);
/* the rest of this isn't needed, just play it safe */
#if defined(THREADS)
_glthread_SetTSD(&RealDispatchTSD, NULL);
#endif
_glapi_RealDispatch = NULL;
}
struct _glapi_table *
_glapi_get_override_dispatch(int layer)
{
if (layer == 0) {
return _glapi_get_dispatch();
}
else {
if (DispatchOverride) {
#if defined(THREADS)
return (struct _glapi_table *) _glthread_GetTSD(&DispatchTSD);
#else
return _glapi_Dispatch;
#endif
}
else {
return NULL;
}
}
}
struct name_address_offset {
const char *Name;
GLvoid *Address;
GLuint Offset;
};
/* The code in this file is auto-generated with Python */
#include "glprocs.h"
/*
* Return dispatch table offset of the named static (built-in) function.
* Return -1 if function not found.
*/
static GLint
get_static_proc_offset(const char *funcName)
{
GLuint i;
for (i = 0; static_functions[i].Name; i++) {
if (strcmp(static_functions[i].Name, funcName) == 0) {
return static_functions[i].Offset;
}
}
return -1;
}
/*
* Return dispatch function address the named static (built-in) function.
* Return NULL if function not found.
*/
static GLvoid *
get_static_proc_address(const char *funcName)
{
GLint i;
for (i = 0; static_functions[i].Name; i++) {
if (strcmp(static_functions[i].Name, funcName) == 0) {
return static_functions[i].Address;
}
}
return NULL;
}
/**********************************************************************
* Extension function management.
*/
/*
* Number of extension functions which we can dynamically add at runtime.
*/
#define MAX_EXTENSION_FUNCS 300
/*
* The disptach table size (number of entries) is the sizeof the
* _glapi_table struct plus the number of dynamic entries we can add.
* The extra slots can be filled in by DRI drivers that register new extension
* functions.
*/
#define DISPATCH_TABLE_SIZE (sizeof(struct _glapi_table) / sizeof(void *) + MAX_EXTENSION_FUNCS)
static struct name_address_offset ExtEntryTable[MAX_EXTENSION_FUNCS];
static GLuint NumExtEntryPoints = 0;
#ifdef USE_SPARC_ASM
extern void __glapi_sparc_icache_flush(unsigned int *);
#endif
/*
* Generate a dispatch function (entrypoint) which jumps through
* the given slot number (offset) in the current dispatch table.
* We need assembly language in order to accomplish this.
*/
static void *
generate_entrypoint(GLuint functionOffset)
{
#if defined(USE_X86_ASM)
/*
* This x86 code contributed by Josh Vanderhoof.
*
* 0: a1 10 32 54 76 movl __glapi_Dispatch,%eax
* 00 01 02 03 04
* 5: 85 c0 testl %eax,%eax
* 05 06
* 7: 74 06 je f <entrypoint+0xf>
* 07 08
* 9: ff a0 10 32 54 76 jmp *0x76543210(%eax)
* 09 0a 0b 0c 0d 0e
* f: e8 fc ff ff ff call __glapi_get_dispatch
* 0f 10 11 12 13
* 14: ff a0 10 32 54 76 jmp *0x76543210(%eax)
* 14 15 16 17 18 19
*/
static const unsigned char insn_template[] = {
0xa1, 0x00, 0x00, 0x00, 0x00,
0x85, 0xc0,
0x74, 0x06,
0xff, 0xa0, 0x00, 0x00, 0x00, 0x00,
0xe8, 0x00, 0x00, 0x00, 0x00,
0xff, 0xa0, 0x00, 0x00, 0x00, 0x00
};
unsigned char *code = (unsigned char *) malloc(sizeof(insn_template));
unsigned int next_insn;
if (code) {
memcpy(code, insn_template, sizeof(insn_template));
*(unsigned int *)(code + 0x01) = (unsigned int)&_glapi_Dispatch;
*(unsigned int *)(code + 0x0b) = (unsigned int)functionOffset * 4;
next_insn = (unsigned int)(code + 0x14);
*(unsigned int *)(code + 0x10) = (unsigned int)_glapi_get_dispatch - next_insn;
*(unsigned int *)(code + 0x16) = (unsigned int)functionOffset * 4;
}
return code;
#elif defined(USE_SPARC_ASM)
#ifdef __sparc_v9__
static const unsigned int insn_template[] = {
0x05000000, /* sethi %uhi(_glapi_Dispatch), %g2 */
0x03000000, /* sethi %hi(_glapi_Dispatch), %g1 */
0x8410a000, /* or %g2, %ulo(_glapi_Dispatch), %g2 */
0x82106000, /* or %g1, %lo(_glapi_Dispatch), %g1 */
0x8528b020, /* sllx %g2, 32, %g2 */
0xc2584002, /* ldx [%g1 + %g2], %g1 */
0x05000000, /* sethi %hi(8 * glapioffset), %g2 */
0x8410a000, /* or %g2, %lo(8 * glapioffset), %g2 */
0xc6584002, /* ldx [%g1 + %g2], %g3 */
0x81c0c000, /* jmpl %g3, %g0 */
0x01000000 /* nop */
};
#else
static const unsigned int insn_template[] = {
0x03000000, /* sethi %hi(_glapi_Dispatch), %g1 */
0xc2006000, /* ld [%g1 + %lo(_glapi_Dispatch)], %g1 */
0xc6006000, /* ld [%g1 + %lo(4*glapioffset)], %g3 */
0x81c0c000, /* jmpl %g3, %g0 */
0x01000000 /* nop */
};
#endif
unsigned int *code = (unsigned int *) malloc(sizeof(insn_template));
unsigned long glapi_addr = (unsigned long) &_glapi_Dispatch;
if (code) {
memcpy(code, insn_template, sizeof(insn_template));
#ifdef __sparc_v9__
code[0] |= (glapi_addr >> (32 + 10));
code[1] |= ((glapi_addr & 0xffffffff) >> 10);
__glapi_sparc_icache_flush(&code[0]);
code[2] |= ((glapi_addr >> 32) & ((1 << 10) - 1));
code[3] |= (glapi_addr & ((1 << 10) - 1));
__glapi_sparc_icache_flush(&code[2]);
code[6] |= ((functionOffset * 8) >> 10);
code[7] |= ((functionOffset * 8) & ((1 << 10) - 1));
__glapi_sparc_icache_flush(&code[6]);
#else
code[0] |= (glapi_addr >> 10);
code[1] |= (glapi_addr & ((1 << 10) - 1));
__glapi_sparc_icache_flush(&code[0]);
code[2] |= (functionOffset * 4);
__glapi_sparc_icache_flush(&code[2]);
#endif
}
return code;
#else
return NULL;
#endif /* USE_*_ASM */
}
/*
* This function inserts a new dispatch offset into the assembly language
* stub that was generated with the preceeding function.
*/
static void
fill_in_entrypoint_offset(void *entrypoint, GLuint offset)
{
#if defined(USE_X86_ASM)
unsigned char *code = (unsigned char *) entrypoint;
*(unsigned int *)(code + 0x0b) = offset * 4;
*(unsigned int *)(code + 0x16) = offset * 4;
#elif defined(USE_SPARC_ASM)
/* XXX this hasn't been tested! */
unsigned int *code = (unsigned int *) entrypoint;
#ifdef __sparc_v9__
code[6] = 0x05000000; /* sethi %hi(8 * glapioffset), %g2 */
code[7] = 0x8410a000; /* or %g2, %lo(8 * glapioffset), %g2 */
code[6] |= ((offset * 8) >> 10);
code[7] |= ((offset * 8) & ((1 << 10) - 1));
__glapi_sparc_icache_flush(&code[6]);
#else /* __sparc_v9__ */
code[2] = 0xc6006000; /* ld [%g1 + %lo(4*glapioffset)], %g3 */
code[2] |= (offset * 4);
__glapi_sparc_icache_flush(&code[2]);
#endif /* __sparc_v9__ */
#endif /* USE_*_ASM */
}
/*
* Add a new extension function entrypoint.
* Return: GL_TRUE = success or GL_FALSE = failure
*/
GLboolean
_glapi_add_entrypoint(const char *funcName, GLuint offset)
{
/* trivial rejection test */
if (!funcName || funcName[0] != 'g' || funcName[1] != 'l')
return GL_FALSE;
/* first check if the named function is already statically present */
{
GLint index = get_static_proc_offset(funcName);
if (index >= 0) {
return (GLboolean) ((GLuint) index == offset); /* bad offset! */
}
}
/* See if this function has already been dynamically added */
{
GLuint i;
for (i = 0; i < NumExtEntryPoints; i++) {
if (strcmp(ExtEntryTable[i].Name, funcName) == 0) {
/* function already registered */
if (ExtEntryTable[i].Offset == offset) {
return GL_TRUE; /* offsets match */
}
else if (ExtEntryTable[i].Offset == ~0
&& offset < DISPATCH_TABLE_SIZE) {
/* need to patch-up the dispatch code */
if (offset != ~0) {
fill_in_entrypoint_offset(ExtEntryTable[i].Address, offset);
ExtEntryTable[i].Offset = offset;
}
return GL_TRUE;
}
else {
return GL_FALSE; /* bad offset! */
}
}
}
}
/* This is a new function, try to add it. */
if (NumExtEntryPoints >= MAX_EXTENSION_FUNCS ||
offset >= DISPATCH_TABLE_SIZE) {
/* No space left */
return GL_FALSE;
}
else {
void *entrypoint = generate_entrypoint(offset);
if (!entrypoint)
return GL_FALSE; /* couldn't generate assembly */
/* OK! */
ExtEntryTable[NumExtEntryPoints].Name = str_dup(funcName);
ExtEntryTable[NumExtEntryPoints].Offset = offset;
ExtEntryTable[NumExtEntryPoints].Address = entrypoint;
NumExtEntryPoints++;
return GL_TRUE; /* success */
}
/* should never get here, silence compiler warnings */
return GL_FALSE;
}
/*
* Return offset of entrypoint for named function within dispatch table.
*/
GLint
_glapi_get_proc_offset(const char *funcName)
{
/* search extension functions first */
GLuint i;
for (i = 0; i < NumExtEntryPoints; i++) {
if (strcmp(ExtEntryTable[i].Name, funcName) == 0) {
return ExtEntryTable[i].Offset;
}
}
/* search static functions */
return get_static_proc_offset(funcName);
}
/*
* Return entrypoint for named function.
*/
const GLvoid *
_glapi_get_proc_address(const char *funcName)
{
/* search extension functions first */
GLuint i;
for (i = 0; i < NumExtEntryPoints; i++) {
if (strcmp(ExtEntryTable[i].Name, funcName) == 0) {
return ExtEntryTable[i].Address;
}
}
/* search static functions */
{
const GLvoid *func = get_static_proc_address(funcName);
if (func)
return func;
}
/* generate new entrypoint - use a temporary dispatch offset of
* ~0 (i.e. -1). Later, when the driver calls _glapi_add_entrypoint()
* we'll put in the proper offset. If that never happens, and the
* user calls this function, he'll segfault. That's what you get
* when you try calling a GL function that doesn't really exist.
*/
if (NumExtEntryPoints < MAX_EXTENSION_FUNCS) {
GLvoid *entrypoint = generate_entrypoint(~0);
if (!entrypoint)
return GL_FALSE;
ExtEntryTable[NumExtEntryPoints].Name = str_dup(funcName);
ExtEntryTable[NumExtEntryPoints].Offset = ~0;
ExtEntryTable[NumExtEntryPoints].Address = entrypoint;
NumExtEntryPoints++;
return entrypoint;
}
else {
/* no space for new functions! */
return NULL;
}
}
/*
* Return the name of the function at the given dispatch offset.
* This is only intended for debugging.
*/
const char *
_glapi_get_proc_name(GLuint offset)
{
const GLuint n = sizeof(static_functions) / sizeof(struct name_address_offset);
GLuint i;
/* search built-in functions */
for (i = 0; i < n; i++) {
if (static_functions[i].Offset == offset)
return static_functions[i].Name;
}
/* search added extension functions */
for (i = 0; i < NumExtEntryPoints; i++) {
if (ExtEntryTable[i].Offset == offset) {
return ExtEntryTable[i].Name;
}
}
return NULL;
}
/*
* Return size of dispatch table struct as number of functions (or
* slots).
*/
GLuint
_glapi_get_dispatch_table_size(void)
{
return DISPATCH_TABLE_SIZE;
}
/*
* Get API dispatcher version string.
*/
const char *
_glapi_get_version(void)
{
return "20021001"; /* YYYYMMDD */
}
/*
* Make sure there are no NULL pointers in the given dispatch table.
* Intended for debugging purposes.
*/
void
_glapi_check_table(const struct _glapi_table *table)
{
#ifdef DEBUG
const GLuint entries = _glapi_get_dispatch_table_size();
const void **tab = (const void **) table;
GLuint i;
for (i = 1; i < entries; i++) {
assert(tab[i]);
}
/* Do some spot checks to be sure that the dispatch table
* slots are assigned correctly.
*/
{
GLuint BeginOffset = _glapi_get_proc_offset("glBegin");
char *BeginFunc = (char*) &table->Begin;
GLuint offset = (BeginFunc - (char *) table) / sizeof(void *);
assert(BeginOffset == _gloffset_Begin);
assert(BeginOffset == offset);
}
{
GLuint viewportOffset = _glapi_get_proc_offset("glViewport");
char *viewportFunc = (char*) &table->Viewport;
GLuint offset = (viewportFunc - (char *) table) / sizeof(void *);
assert(viewportOffset == _gloffset_Viewport);
assert(viewportOffset == offset);
}
{
GLuint VertexPointerOffset = _glapi_get_proc_offset("glVertexPointer");
char *VertexPointerFunc = (char*) &table->VertexPointer;
GLuint offset = (VertexPointerFunc - (char *) table) / sizeof(void *);
assert(VertexPointerOffset == _gloffset_VertexPointer);
assert(VertexPointerOffset == offset);
}
{
GLuint ResetMinMaxOffset = _glapi_get_proc_offset("glResetMinmax");
char *ResetMinMaxFunc = (char*) &table->ResetMinmax;
GLuint offset = (ResetMinMaxFunc - (char *) table) / sizeof(void *);
assert(ResetMinMaxOffset == _gloffset_ResetMinmax);
assert(ResetMinMaxOffset == offset);
}
{
GLuint blendColorOffset = _glapi_get_proc_offset("glBlendColor");
char *blendColorFunc = (char*) &table->BlendColor;
GLuint offset = (blendColorFunc - (char *) table) / sizeof(void *);
assert(blendColorOffset == _gloffset_BlendColor);
assert(blendColorOffset == offset);
}
{
GLuint istextureOffset = _glapi_get_proc_offset("glIsTextureEXT");
char *istextureFunc = (char*) &table->IsTextureEXT;
GLuint offset = (istextureFunc - (char *) table) / sizeof(void *);
assert(istextureOffset == _gloffset_IsTextureEXT);
assert(istextureOffset == offset);
}
{
GLuint secondaryColor3fOffset = _glapi_get_proc_offset("glSecondaryColor3fEXT");
char *secondaryColor3fFunc = (char*) &table->SecondaryColor3fEXT;
GLuint offset = (secondaryColor3fFunc - (char *) table) / sizeof(void *);
assert(secondaryColor3fOffset == _gloffset_SecondaryColor3fEXT);
assert(secondaryColor3fOffset == offset);
assert(_glapi_get_proc_address("glSecondaryColor3fEXT") == (void *) &glSecondaryColor3fEXT);
}
{
GLuint pointParameterivOffset = _glapi_get_proc_offset("glPointParameterivNV");
char *pointParameterivFunc = (char*) &table->PointParameterivNV;
GLuint offset = (pointParameterivFunc - (char *) table) / sizeof(void *);
assert(pointParameterivOffset == _gloffset_PointParameterivNV);
assert(pointParameterivOffset == offset);
assert(_glapi_get_proc_address("glPointParameterivNV") == (void *) &glPointParameterivNV);
}
{
GLuint setFenceOffset = _glapi_get_proc_offset("glSetFenceNV");
char *setFenceFunc = (char*) &table->SetFenceNV;
GLuint offset = (setFenceFunc - (char *) table) / sizeof(void *);
assert(setFenceOffset == _gloffset_SetFenceNV);
assert(setFenceOffset == offset);
assert(_glapi_get_proc_address("glSetFenceNV") == (void *) &glSetFenceNV);
}
#endif
}