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/*************************************************************************/
/* context_gl_x11.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 THE AUTHORS OR COPYRIGHT HOLDERS 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. */
/*************************************************************************/
#include "context_gl_x11.h"
#ifdef X11_ENABLED
#if defined(OPENGL_ENABLED) || defined(LEGACYGL_ENABLED)
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <GL/glx.h>
#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
typedef GLXContext (*GLXCREATECONTEXTATTRIBSARBPROC)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
struct ContextGL_X11_Private {
::GLXContext glx_context;
};
void ContextGL_X11::release_current() {
glXMakeCurrent(x11_display, None, NULL);
}
void ContextGL_X11::make_current() {
glXMakeCurrent(x11_display, x11_window, p->glx_context);
}
void ContextGL_X11::swap_buffers() {
glXSwapBuffers(x11_display,x11_window);
}
/*
static GLWrapperFuncPtr wrapper_get_proc_address(const char* p_function) {
//print_line(String()+"getting proc of: "+p_function);
GLWrapperFuncPtr func=(GLWrapperFuncPtr)glXGetProcAddress( (const GLubyte*) p_function);
if (!func) {
print_line("Couldn't find function: "+String(p_function));
}
return func;
}*/
Error ContextGL_X11::initialize() {
GLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = NULL;
// const char *extensions = glXQueryExtensionsString(x11_display, DefaultScreen(x11_display));
glXCreateContextAttribsARB = (GLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");
ERR_FAIL_COND_V( !glXCreateContextAttribsARB, ERR_UNCONFIGURED );
static int visual_attribs[] = {
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_DOUBLEBUFFER, true,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DEPTH_SIZE, 24,
None
};
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(x11_display, DefaultScreen(x11_display), visual_attribs, &fbcount);
ERR_FAIL_COND_V(!fbc,ERR_UNCONFIGURED);
XVisualInfo *vi = glXGetVisualFromFBConfig(x11_display, fbc[0]);
XSetWindowAttributes swa;
swa.colormap = XCreateColormap(x11_display, RootWindow(x11_display, vi->screen), vi->visual, AllocNone);
swa.border_pixel = 0;
swa.event_mask = StructureNotifyMask;
/*
char* windowid = getenv("GODOT_WINDOWID");
if (windowid) {
//freopen("/home/punto/stdout", "w", stdout);
//reopen("/home/punto/stderr", "w", stderr);
x11_window = atol(windowid);
} else {
*/
x11_window = XCreateWindow(x11_display, RootWindow(x11_display, vi->screen), 0, 0, OS::get_singleton()->get_video_mode().width, OS::get_singleton()->get_video_mode().height, 0, vi->depth, InputOutput, vi->visual, CWBorderPixel|CWColormap|CWEventMask, &swa);
ERR_FAIL_COND_V(!x11_window,ERR_UNCONFIGURED);
XMapWindow(x11_display, x11_window);
while(true) {
// wait for mapnotify (window created)
XEvent e;
XNextEvent(x11_display, &e);
if (e.type == MapNotify)
break;
}
//};
if (!opengl_3_context) {
//oldstyle context:
p->glx_context = glXCreateContext(x11_display, vi, 0, GL_TRUE);
} else {
static int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
None
};
p->glx_context = glXCreateContextAttribsARB(x11_display, fbc[0], NULL, true, context_attribs);
ERR_FAIL_COND_V(!p->glx_context,ERR_UNCONFIGURED);
}
glXMakeCurrent(x11_display, x11_window, p->glx_context);
/*
glWrapperInit(wrapper_get_proc_address);
glFlush();
glXSwapBuffers(x11_display,x11_window);
*/
//glXMakeCurrent(x11_display, None, NULL);
XFree( vi );
XFree( fbc );
return OK;
}
int ContextGL_X11::get_window_width() {
XWindowAttributes xwa;
XGetWindowAttributes(x11_display,x11_window,&xwa);
return xwa.width;
}
int ContextGL_X11::get_window_height() {
XWindowAttributes xwa;
XGetWindowAttributes(x11_display,x11_window,&xwa);
return xwa.height;
}
ContextGL_X11::ContextGL_X11(::Display *p_x11_display,::Window &p_x11_window,const OS::VideoMode& p_default_video_mode,bool p_opengl_3_context) : x11_window(p_x11_window) {
default_video_mode=p_default_video_mode;
x11_display=p_x11_display;
opengl_3_context=p_opengl_3_context;
double_buffer=false;
direct_render=false;
glx_minor=glx_major=0;
p = memnew( ContextGL_X11_Private );
p->glx_context=0;
}
ContextGL_X11::~ContextGL_X11() {
release_current();
glXDestroyContext( x11_display, p->glx_context );
memdelete( p );
}
#endif
#endif
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