136 lines
4.0 KiB
Plaintext
136 lines
4.0 KiB
Plaintext
#include "idlib/precompiled.h"
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#include "renderer/tr_local.h"
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#include "sys/linux/local.h"
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#include "glimp_local.h"
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#include <dlfcn.h>
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dnl =====================================================
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dnl utils
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dnl =====================================================
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define(`forloop',
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`pushdef(`$1', `$2')_forloop(`$1', `$2', `$3', `$4')popdef(`$1')')
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define(`_forloop',
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`$4`'ifelse($1, `$3', ,
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`define(`$1', incr($1))_forloop(`$1', `$2', `$3', `$4')')')
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dnl =====================================================
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dnl the gl wgl glX definitions
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dnl =====================================================
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include(../gllog/gl_def.m4)
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dnl =====================================================
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dnl qgl function ptrs
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dnl =====================================================
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define(`instance_funcptr', ``$1' ( APIENTRY * qgl`$2' )(`$3');')
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forloop(`i', gl_start, gl_end, `instance_funcptr(indir(`f'i`_ret'), indir(`f'i`_name'), indir(`f'i`_params'))
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')
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dnl =====================================================
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dnl glX function ptrs
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dnl =====================================================
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define(`instance_funcptr', ``$1' ( * qglX`$2' )(`$3');')
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forloop(`i', glX_start, glX_end, `instance_funcptr(indir(`f'i`_ret'), indir(`f'i`_name'), indir(`f'i`_params'))
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')
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dnl =====================================================
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dnl dll ptrs
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dnl those are the actual dlsym'ed pointers
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dnl logging configuration redirects qgl / qglX to either log or dll versions
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dnl =====================================================
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define(`instance_funcptr', ``$1' ( * dll`$2' )(`$3');')
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forloop(`i', gl_start, gl_end, `instance_funcptr(indir(`f'i`_ret'), indir(`f'i`_name'), indir(`f'i`_params'))
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')
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forloop(`i', glX_start, glX_end, `instance_funcptr(indir(`f'i`_ret'), indir(`f'i`_name'), indir(`f'i`_params'))
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')
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dnl =====================================================
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dnl code
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dnl =====================================================
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/*
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======================
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GLimp_BindNative
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======================
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*/
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void GLimp_BindNative() {
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define(`assign_funcptr', `qgl`$1' = dll`$1';')
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forloop(`i', gl_start, gl_end, `assign_funcptr(indir(`f'i`_name'))
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')
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define(`assign_funcptr', `qglX`$1' = dll`$1';')
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forloop(`i', glX_start, glX_end, `assign_funcptr(indir(`f'i`_name'))
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')
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}
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static void *glHandle = NULL;
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/*
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======================
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GLimp_dlsym_failed
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======================
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*/
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void GLimp_dlsym_failed(const char *name) {
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common->DPrintf("dlsym(%s) failed: %s\n", name, dlerror());
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}
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/*
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======================
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GLimp_dlopen
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======================
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*/
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bool GLimp_dlopen() {
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const char *driverName = r_glDriver.GetString()[0] ? r_glDriver.GetString() : "libGL.so.1";
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common->Printf("dlopen(%s)\n", driverName);
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if ( !( glHandle = dlopen( driverName, RTLD_NOW | RTLD_GLOBAL ) ) ) {
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common->DPrintf("dlopen(%s) failed: %s\n", driverName, dlerror());
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return false;
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}
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// dlsym the symbols
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define(`dlsym_funcptr', `dll`$2' = ( `$1' ( APIENTRY *)(`$3') ) dlsym( glHandle, "gl`$2'" );')
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define(`safe_dlsym_funcptr', `dlsym_funcptr(`$1', `$2', `$3')
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if (!dll`$2') { GLimp_dlsym_failed("gl`$2'"); return false; }')
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forloop(`i', gl_start, gl_end, `safe_dlsym_funcptr(indir(`f'i`_ret'), indir(`f'i`_name'), indir(`f'i`_params'))
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')
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define(`dlsym_funcptr', `dll`$2' = ( `$1' ( APIENTRY *)(`$3') ) dlsym( glHandle, "glX`$2'" );')
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define(`safe_dlsym_funcptr', `dlsym_funcptr(`$1', `$2', `$3')
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if (!dll`$2') { GLimp_dlsym_failed("glX`$2'"); return false; }')
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forloop(`i', glX_start, glX_end, `safe_dlsym_funcptr(indir(`f'i`_ret'), indir(`f'i`_name'), indir(`f'i`_params'))
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')
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// make the initial binding
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GLimp_BindNative();
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return true;
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}
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/*
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======================
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GLimp_dlclose
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======================
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*/
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void GLimp_dlclose() {
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if ( !glHandle ) {
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common->DPrintf("dlclose: GL handle is NULL\n");
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} else {
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dlclose( glHandle );
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glHandle = NULL;
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}
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define(`reset_funcptr', `qgl`$1' = NULL;')
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forloop(`i', gl_start, gl_end, `reset_funcptr(indir(`f'i`_name'))
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')
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define(`reset_funcptr', `qglX`$1' = NULL;')
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forloop(`i', glX_start, glX_end, `reset_funcptr(indir(`f'i`_name'))
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')
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}
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