275 lines
8.8 KiB
C++
275 lines
8.8 KiB
C++
/*************************************************************************/
|
|
/* context_gl_x11.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* 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)
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#define GLX_GLXEXT_PROTOTYPES
|
|
#include <GL/glx.h>
|
|
#include <GL/glxext.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;
|
|
|
|
}*/
|
|
|
|
static bool ctxErrorOccurred = false;
|
|
static int ctxErrorHandler(Display *dpy, XErrorEvent *ev) {
|
|
ctxErrorOccurred = true;
|
|
return 0;
|
|
}
|
|
|
|
static void set_class_hint(Display *p_display, Window p_window) {
|
|
XClassHint *classHint;
|
|
|
|
/* set the name and class hints for the window manager to use */
|
|
classHint = XAllocClassHint();
|
|
if (classHint) {
|
|
classHint->res_name = (char *)"Godot_Engine";
|
|
classHint->res_class = (char *)"Godot";
|
|
}
|
|
XSetClassHint(p_display, p_window, classHint);
|
|
XFree(classHint);
|
|
}
|
|
|
|
Error ContextGL_X11::initialize() {
|
|
|
|
//const char *extensions = glXQueryExtensionsString(x11_display, DefaultScreen(x11_display));
|
|
|
|
GLXCREATECONTEXTATTRIBSARBPROC 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);
|
|
set_class_hint(x11_display, x11_window);
|
|
XMapWindow(x11_display, x11_window);
|
|
//};
|
|
|
|
int (*oldHandler)(Display *, XErrorEvent *) =
|
|
XSetErrorHandler(&ctxErrorHandler);
|
|
|
|
switch (context_type) {
|
|
case GLES_2_0_COMPATIBLE:
|
|
case OLDSTYLE: {
|
|
p->glx_context = glXCreateContext(x11_display, vi, 0, GL_TRUE);
|
|
} break;
|
|
/*
|
|
case ContextType::GLES_2_0_COMPATIBLE: {
|
|
|
|
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_EXPLAIN("Could not obtain an OpenGL 3.0 context!");
|
|
ERR_FAIL_COND_V(!p->glx_context, ERR_UNCONFIGURED);
|
|
} break;
|
|
*/
|
|
case GLES_3_0_COMPATIBLE: {
|
|
|
|
static int context_attribs[] = {
|
|
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
|
|
GLX_CONTEXT_MINOR_VERSION_ARB, 3,
|
|
GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB /*|GLX_CONTEXT_DEBUG_BIT_ARB*/,
|
|
None
|
|
};
|
|
|
|
p->glx_context = glXCreateContextAttribsARB(x11_display, fbc[0], NULL, true, context_attribs);
|
|
ERR_EXPLAIN("Could not obtain an OpenGL 3.3 context!");
|
|
ERR_FAIL_COND_V(ctxErrorOccurred || !p->glx_context, ERR_UNCONFIGURED);
|
|
} break;
|
|
}
|
|
|
|
XSync(x11_display, False);
|
|
XSetErrorHandler(oldHandler);
|
|
|
|
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;
|
|
}
|
|
|
|
void ContextGL_X11::set_use_vsync(bool p_use) {
|
|
static bool setup = false;
|
|
static PFNGLXSWAPINTERVALEXTPROC glXSwapIntervalEXT = NULL;
|
|
static PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalMESA = NULL;
|
|
static PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalSGI = NULL;
|
|
|
|
if (!setup) {
|
|
setup = true;
|
|
String extensions = glXQueryExtensionsString(x11_display, DefaultScreen(x11_display));
|
|
if (extensions.find("GLX_EXT_swap_control") != -1)
|
|
glXSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalEXT");
|
|
if (extensions.find("GLX_MESA_swap_control") != -1)
|
|
glXSwapIntervalMESA = (PFNGLXSWAPINTERVALSGIPROC)glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalMESA");
|
|
if (extensions.find("GLX_SGI_swap_control") != -1)
|
|
glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalSGI");
|
|
}
|
|
int val = p_use ? 1 : 0;
|
|
if (glXSwapIntervalMESA) {
|
|
glXSwapIntervalMESA(val);
|
|
} else if (glXSwapIntervalSGI) {
|
|
glXSwapIntervalSGI(val);
|
|
} else if (glXSwapIntervalEXT) {
|
|
GLXDrawable drawable = glXGetCurrentDrawable();
|
|
glXSwapIntervalEXT(x11_display, drawable, val);
|
|
} else
|
|
return;
|
|
use_vsync = p_use;
|
|
}
|
|
bool ContextGL_X11::is_using_vsync() const {
|
|
|
|
return use_vsync;
|
|
}
|
|
|
|
ContextGL_X11::ContextGL_X11(::Display *p_x11_display, ::Window &p_x11_window, const OS::VideoMode &p_default_video_mode, ContextType p_context_type) :
|
|
x11_window(p_x11_window) {
|
|
|
|
default_video_mode = p_default_video_mode;
|
|
x11_display = p_x11_display;
|
|
|
|
context_type = p_context_type;
|
|
|
|
double_buffer = false;
|
|
direct_render = false;
|
|
glx_minor = glx_major = 0;
|
|
p = memnew(ContextGL_X11_Private);
|
|
p->glx_context = 0;
|
|
use_vsync = false;
|
|
}
|
|
|
|
ContextGL_X11::~ContextGL_X11() {
|
|
release_current();
|
|
glXDestroyContext(x11_display, p->glx_context);
|
|
|
|
memdelete(p);
|
|
}
|
|
|
|
#endif
|
|
#endif
|