quakeforge/tools/3dfx_stub/gl_stub.c

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/*
gl_stub.c
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Dummy glXGetProcAddressARB function
Copyright (C)2001 Bill Currie <bill@taniwha.org>
Copyright (C)2002 Chris Ison wildcode@users.sourceforge.net
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This file is part of Quakeforge and lib3Dfxgl.
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Quakeforge and lib3Dfxgl are free software; you can redistribute them
and/or modify them under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
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Quakeforge and lib3Dfxgl are distributed in the hope that they will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Quakeforge and lib3Dfxgl; if not, write to:
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Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#include <stdlib.h>
#include "3dfxstub.h"
#include "QF/GL/defines.h"
#include "QF/GL/extensions.h"
#include "QF/GL/types.h"
#include "QF/hash.h"
#define QFGL_DONT_NEED(ret, func, params) QFGL_NEED(ret, func, params)
#undef QFGL_WANT
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#undef QFGL_NEED
#define QFGL_WANT(ret, name, args) \
ret GLAPIENTRY norm_##name args;
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#define QFGL_NEED(ret, name, args) \
ret GLAPIENTRY norm_##name args;
#include "QF/GL/qf_funcs_list.h"
#undef QFGL_NEED
#undef QFGL_WANT
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fxMesaContext norm_fxMesaCreateContext (GLuint win, GrScreenResolution_t res, GrScreenRefresh_t ref, const GLint attribList[]);
void norm_fxMesaMakeCurrent(fxMesaContext fxMesa);
void norm_fxMesaDestroyContext(fxMesaContext fxMesa);
void norm_fxMesaSwapBuffers(void);
#define QFGL_WANT(ret, name, args) \
ret GLAPIENTRY trace_##name args;
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#define QFGL_NEED(ret, name, args) \
ret GLAPIENTRY trace_##name args;
#include "QF/GL/qf_funcs_list.h"
#undef QFGL_NEED
#undef QFGL_WANT
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fxMesaContext trace_fxMesaCreateContext (GLuint win, GrScreenResolution_t res, GrScreenRefresh_t ref, const GLint attribList[]);
void trace_fxMesaMakeCurrent(fxMesaContext fxMesa);
void trace_fxMesaDestroyContext(fxMesaContext fxMesa);
void trace_fxMesaSwapBuffers(void);
typedef struct {
const char *name;
void *norm;
void *trace;
} gl_stub_t;
static gl_stub_t gl_stub_funcs[] = {
#define QFGL_WANT(ret, name, args) \
{#name, norm_##name, trace_##name},
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#define QFGL_NEED(ret, name, args) \
{#name, norm_##name, trace_##name},
#include "QF/GL/qf_funcs_list.h"
#undef QFGL_NEED
#undef QFGL_WANT
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{"fxMesaCreateContext", norm_fxMesaCreateContext, trace_fxMesaCreateContext},
{"fxMesaMakeCurrent", norm_fxMesaMakeCurrent, trace_fxMesaMakeCurrent},
{"fxMesaDestroyContext", norm_fxMesaDestroyContext, trace_fxMesaDestroyContext},
{"fxMesaSwapBuffers", norm_fxMesaSwapBuffers, trace_fxMesaSwapBuffers},
};
#define NUM_FUNCS (sizeof (gl_stub_funcs) / sizeof (gl_stub_funcs[0]))
static int
cmp (const void *a, const void *b)
{
return strcmp (((gl_stub_t *)a)->name, ((gl_stub_t *)b)->name);
}
void *
glXGetProcAddressARB (const GLubyte *procName)
{
static int called;
static int trace;
gl_stub_t *stub;
gl_stub_t key;
if (!called) {
char *glstub_trace;
qsort (gl_stub_funcs, NUM_FUNCS, sizeof (gl_stub_t), cmp);
called = 1;
glstub_trace = getenv ("GLSTUB_TRACE");
if (glstub_trace)
trace = atoi (glstub_trace);
}
key.name = procName;
stub = bsearch (&key, gl_stub_funcs, NUM_FUNCS, sizeof (gl_stub_t), cmp);
if (!stub)
return 0;
return trace ? stub->trace : stub->norm;
}