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/* | |
* LD_PRELOAD shim which applies two patches necesary to get the game | |
* Divinity: Original Sin Enhanded Edition for Linux to work with Mesa (12+) | |
* | |
* Build with: gcc -s -O2 -shared -fPIC -o divos-hack.{so,c} -ldl | |
*/ | |
/* for RTLD_NEXT */ | |
#ifndef _GNU_SOURCE | |
#define _GNU_SOURCE | |
#endif | |
#include <dlfcn.h> | |
#include <GL/gl.h> | |
#include <string.h> | |
#define _GLX_PUBLIC | |
/* | |
* https://github.com/karolherbst/mesa/commit/aad2543bf6cfbd7df795d836e5ff4ec8686e4fdf | |
* - allow env override of vendor string. I actually just hard-coded | |
* ATI Technologies, Inc., since that appears to be what's needed | |
*/ | |
const GLubyte *GLAPIENTRY glGetString( GLenum name ) | |
{ | |
static void *next = NULL; | |
static const char *vendor = "ATI Technologies, Inc."; | |
if(name == GL_VENDOR) | |
return (const GLubyte *)vendor; | |
if(!next) | |
next = dlsym(RTLD_NEXT, "glGetString"); | |
return ((const GLubyte *GLAPIENTRY (*)(GLenum))next)(name); | |
} | |
/* | |
* https://gist.github.com/karolherbst/b279233f8b13c9db1f3e1e57c6ecfbd2 | |
*/ | |
_GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void) | |
{ | |
static void *next = NULL; | |
if (strcmp((const char *) procName, "glNamedStringARB") == 0 || | |
strcmp((const char *) procName, "glDeleteNamedStringARB") == 0 || | |
strcmp((const char *) procName, "glCompileShaderIncludeARB") == 0 || | |
strcmp((const char *) procName, "glIsNamedStringARB") == 0 || | |
strcmp((const char *) procName, "glGetNamedStringARB") == 0 || | |
strcmp((const char *) procName, "glGetNamedStringivARB") == 0) | |
return NULL; | |
if(!next) | |
next = dlsym(RTLD_NEXT, "glXGetProcAddressARB"); | |
return ((_GLX_PUBLIC void (*(*)(const GLubyte *))(void))next)(procName); | |
} |
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ref: https://gist.github.com/romanoaugusto88/eb6a2598fb10d1468da6f4497b0fa2de#gistcomment-1924875