701 lines
21 KiB
C++
701 lines
21 KiB
C++
#include "X11OpenGLWindow.h"
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#include "OpenGLInclude.h"
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#include<stdio.h>
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#include<stdlib.h>
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#include<X11/X.h>
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#include<X11/Xlib.h>
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#include<GL/gl.h>
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#include<GL/glx.h>
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//#include<GL/glu.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <pthread.h>
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GLint att[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None };
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static bool forceOpenGL3 = true;
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struct InternalData2
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{
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Display* m_dpy;
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Window m_root;
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XVisualInfo* m_vi;
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Colormap m_cmap;
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XSetWindowAttributes m_swa;
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Window m_win;
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GLXContext m_glc;
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XWindowAttributes m_gwa;
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XEvent m_xev;
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GLXFBConfig m_bestFbc;
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b3WheelCallback m_wheelCallback;
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b3MouseMoveCallback m_mouseMoveCallback;
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b3MouseButtonCallback m_mouseButtonCallback;
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b3ResizeCallback m_resizeCallback;
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b3KeyboardCallback m_keyboardCallback;
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InternalData2()
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:m_dpy(0),
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m_vi(0),
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m_wheelCallback(0),
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m_mouseMoveCallback(0),
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m_mouseButtonCallback(0),
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m_resizeCallback(0),
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m_keyboardCallback(0)
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{
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}
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};
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#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
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#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
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typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
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// Helper to check for extension string presence. Adapted from:
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// http://www.opengl.org/resources/features/OGLextensions/
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static bool isExtensionSupported(const char *extList, const char *extension)
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{
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const char *start;
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const char *where, *terminator;
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/* Extension names should not have spaces. */
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where = strchr(extension, ' ');
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if (where || *extension == '\0')
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return false;
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/* It takes a bit of care to be fool-proof about parsing the
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OpenGL extensions string. Don't be fooled by sub-strings,
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etc. */
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for (start=extList;;) {
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where = strstr(start, extension);
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if (!where)
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break;
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terminator = where + strlen(extension);
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if ( where == start || *(where - 1) == ' ' )
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if ( *terminator == ' ' || *terminator == '\0' )
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return true;
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start = terminator;
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}
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return false;
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}
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static bool ctxErrorOccurred = false;
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static int ctxErrorHandler( Display *dpy, XErrorEvent *ev )
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{
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ctxErrorOccurred = true;
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return 0;
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}
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X11OpenGLWindow::X11OpenGLWindow()
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:m_OpenGLInitialized(false),
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m_requestedExit(false)
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{
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m_data = new InternalData2;
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}
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X11OpenGLWindow::~X11OpenGLWindow()
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{
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if (m_OpenGLInitialized)
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{
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disableOpenGL();
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}
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delete m_data;
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}
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void X11OpenGLWindow::enableOpenGL()
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{
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if (forceOpenGL3)
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{
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// Get the default screen's GLX extension list
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const char *glxExts = glXQueryExtensionsString( m_data->m_dpy,
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DefaultScreen( m_data->m_dpy ) );
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// NOTE: It is not necessary to create or make current to a context before
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// calling glXGetProcAddressARB
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glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0;
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glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
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glXGetProcAddressARB( (const GLubyte *) "glXCreateContextAttribsARB" );
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GLXContext ctx = 0;
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// Install an X error handler so the application won't exit if GL 3.0
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// context allocation fails.
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//
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// Note this error handler is global. All display connections in all threads
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// of a process use the same error handler, so be sure to guard against other
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// threads issuing X commands while this code is running.
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ctxErrorOccurred = false;
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int (*oldHandler)(Display*, XErrorEvent*) =
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XSetErrorHandler(&ctxErrorHandler);
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// Check for the GLX_ARB_create_context extension string and the function.
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// If either is not present, use GLX 1.3 context creation method.
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if ( !isExtensionSupported( glxExts, "GLX_ARB_create_context" ) ||
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!glXCreateContextAttribsARB )
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{
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printf( "glXCreateContextAttribsARB() not found"
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" ... using old-style GLX context\n" );
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ctx = glXCreateNewContext( m_data->m_dpy, m_data->m_bestFbc, GLX_RGBA_TYPE, 0, True );
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}
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// If it does, try to get a GL 3.0 context!
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else
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{
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int context_attribs[] = {
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GLX_CONTEXT_MAJOR_VERSION_ARB ,3,
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GLX_CONTEXT_MINOR_VERSION_ARB, 2,
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GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB,
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GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,None
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};
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/*
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int context_attribs[] =
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{
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GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
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GLX_CONTEXT_MINOR_VERSION_ARB, 2,
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//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
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None
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};
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*/
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printf( "Creating context\n" );
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ctx = glXCreateContextAttribsARB( m_data->m_dpy, m_data->m_bestFbc, 0,
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True, context_attribs );
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// Sync to ensure any errors generated are processed.
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XSync( m_data->m_dpy, False );
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if ( !ctxErrorOccurred && ctx )
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printf( "Created GL 3.0 context\n" );
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else
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{
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// Couldn't create GL 3.0 context. Fall back to old-style 2.x context.
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// When a context version below 3.0 is requested, implementations will
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// return the newest context version compatible with OpenGL versions less
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// than version 3.0.
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// GLX_CONTEXT_MAJOR_VERSION_ARB = 1
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context_attribs[1] = 1;
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// GLX_CONTEXT_MINOR_VERSION_ARB = 0
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context_attribs[3] = 0;
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ctxErrorOccurred = false;
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printf( "Failed to create GL 3.0 context"
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" ... using old-style GLX context\n" );
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ctx = glXCreateContextAttribsARB( m_data->m_dpy, m_data->m_bestFbc, 0,
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True, context_attribs );
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}
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}
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// Sync to ensure any errors generated are processed.
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XSync( m_data->m_dpy, False );
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// Restore the original error handler
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XSetErrorHandler( oldHandler );
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if ( ctxErrorOccurred || !ctx )
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{
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printf( "Failed to create an OpenGL context\n" );
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exit(1);
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}
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// Verifying that context is a direct context
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if ( ! glXIsDirect ( m_data->m_dpy, ctx ) )
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{
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printf( "Indirect GLX rendering context obtained\n" );
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}
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else
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{
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printf( "Direct GLX rendering context obtained\n" );
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}
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printf( "Making context current\n" );
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glXMakeCurrent( m_data->m_dpy, m_data->m_win, ctx );
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} else
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{
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m_data->m_glc = glXCreateContext(m_data->m_dpy, m_data->m_vi, NULL, GL_TRUE);
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glXMakeCurrent(m_data->m_dpy, m_data->m_win, m_data->m_glc);
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}
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const GLubyte* ven = glGetString(GL_VENDOR);
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printf("GL_VENDOR=%s\n", ven);
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const GLubyte* ren = glGetString(GL_RENDERER);
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printf("GL_RENDERER=%s\n",ren);
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const GLubyte* ver = glGetString(GL_VERSION);
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printf("GL_VERSION=%s\n", ver);
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const GLubyte* sl = glGetString(GL_SHADING_LANGUAGE_VERSION);
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printf("GL_SHADING_LANGUAGE_VERSION=%s\n", sl);
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//Access pthreads as a workaround for a bug in Linux/Ubuntu
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//See https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1248642
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int i=pthread_getconcurrency();
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printf("pthread_getconcurrency()=%d\n",i);
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// const GLubyte* ext = glGetString(GL_EXTENSIONS);
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// printf("GL_EXTENSIONS=%s\n", ext);
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}
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void X11OpenGLWindow::disableOpenGL()
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{
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glXMakeCurrent(m_data->m_dpy, None, NULL);
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glXDestroyContext(m_data->m_dpy, m_data->m_glc);
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}
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void X11OpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
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{
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printf("createWindow\n");
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m_data->m_dpy = XOpenDisplay(NULL);
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if(m_data->m_dpy == NULL) {
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printf("\n\tcannot connect to X server\n\n");
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exit(0);
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}
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m_data->m_root = DefaultRootWindow(m_data->m_dpy);
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if (forceOpenGL3)
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{
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int glxMinor, glxMajor;
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if (!glXQueryVersion(m_data->m_dpy,&glxMajor,&glxMinor) || (((glxMajor==1)&&(glxMinor<3)) || (glxMajor<1)))
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{
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printf("Invalid GLX version: major %d, minor %d\n",glxMajor,glxMinor);
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exit(0);
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}
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static int visual_attribs[] =
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{
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GLX_X_RENDERABLE , True,
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GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
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GLX_RENDER_TYPE , GLX_RGBA_BIT,
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GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR,
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GLX_RED_SIZE , 8,
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GLX_GREEN_SIZE , 8,
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GLX_BLUE_SIZE , 8,
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GLX_ALPHA_SIZE , 8,
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GLX_DEPTH_SIZE , 24,
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GLX_STENCIL_SIZE , 8,
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GLX_DOUBLEBUFFER , True,
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None
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};
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int fbcount;
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GLXFBConfig* fbc = glXChooseFBConfig(m_data->m_dpy, DefaultScreen(m_data->m_dpy), visual_attribs, &fbcount);
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if (!fbc)
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{
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printf( "Failed to retrieve a framebuffer config\n" );
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exit(1);
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}
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int best_fbc = -1, worst_fbc = -1, best_num_samp = -1, worst_num_samp = 999;
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int i;
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for (i=0; i<fbcount; ++i)
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{
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XVisualInfo *vi = glXGetVisualFromFBConfig( m_data->m_dpy, fbc[i] );
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if ( vi )
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{
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int samp_buf, samples;
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glXGetFBConfigAttrib( m_data->m_dpy, fbc[i], GLX_SAMPLE_BUFFERS, &samp_buf );
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glXGetFBConfigAttrib( m_data->m_dpy, fbc[i], GLX_SAMPLES , &samples );
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//printf( " Matching fbconfig %d, visual ID 0x%2x: SAMPLE_BUFFERS = %d,"
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// " SAMPLES = %d\n",
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// i, vi -> visualid, samp_buf, samples );
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if ( best_fbc < 0 || samp_buf && samples > best_num_samp )
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best_fbc = i, best_num_samp = samples;
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if ( worst_fbc < 0 || !samp_buf || samples < worst_num_samp )
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worst_fbc = i, worst_num_samp = samples;
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}
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XFree( vi );
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}
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m_data->m_bestFbc = fbc[ best_fbc ];
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// Be sure to free the FBConfig list allocated by glXChooseFBConfig()
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XFree( fbc );
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m_data->m_vi = glXGetVisualFromFBConfig( m_data->m_dpy, m_data->m_bestFbc );
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m_data->m_swa.colormap = m_data->m_cmap = XCreateColormap( m_data->m_dpy,
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RootWindow( m_data->m_dpy, m_data->m_vi->screen ),
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m_data->m_vi->visual, AllocNone );
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m_data->m_swa.background_pixmap = None ;
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m_data->m_swa.border_pixel = 0;
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m_data->m_swa.event_mask = ExposureMask | KeyReleaseMask | KeyPressMask |ButtonPressMask | ButtonReleaseMask |PointerMotionMask|StructureNotifyMask;
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;
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m_data->m_root = RootWindow( m_data->m_dpy, m_data->m_vi->screen );
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m_data->m_win = XCreateWindow( m_data->m_dpy, m_data->m_root,
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0, 0, ci.m_width, ci.m_height, 0, m_data->m_vi->depth, InputOutput,
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m_data->m_vi->visual,
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CWBorderPixel|CWColormap|CWEventMask, &m_data->m_swa );
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//m_data->m_win = XCreateWindow(m_data->m_dpy, m_data->m_root, 0, 0, ci.m_width, ci.m_height, 0, m_data->m_vi->depth, InputOutput, m_data->m_vi->visual, CWColormap | CWEventMask, &m_data->m_swa);
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if (!m_data->m_win)
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{
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printf("Cannot create window\n");
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exit(0);
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}
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XMapWindow(m_data->m_dpy, m_data->m_win);
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XStoreName(m_data->m_dpy, m_data->m_win, "OpenGL3 Window");
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} else
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{
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m_data->m_vi = glXChooseVisual(m_data->m_dpy, 0, att);
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if(m_data->m_vi == NULL) {
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printf("\n\tno appropriate visual found\n\n");
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exit(0);
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}
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else {
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printf("\n\tvisual %p selected\n", (void *)m_data->m_vi->visualid); /* %p creates hexadecimal output like in glxinfo */
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}
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m_data->m_cmap = XCreateColormap(m_data->m_dpy, m_data->m_root, m_data->m_vi->visual, AllocNone);
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m_data->m_swa.colormap = m_data->m_cmap;
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m_data->m_swa.event_mask = ExposureMask | KeyReleaseMask | KeyPressMask |ButtonPressMask | ButtonReleaseMask |PointerMotionMask|StructureNotifyMask;
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m_data->m_win = XCreateWindow(m_data->m_dpy, m_data->m_root, 0, 0, ci.m_width, ci.m_height, 0, m_data->m_vi->depth, InputOutput, m_data->m_vi->visual, CWColormap | CWEventMask, &m_data->m_swa);
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XMapWindow(m_data->m_dpy, m_data->m_win);
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XStoreName(m_data->m_dpy, m_data->m_win, "OpenGL3 Window");
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}
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enableOpenGL();
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}
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void X11OpenGLWindow::closeWindow()
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{
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disableOpenGL();
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XDestroyWindow(m_data->m_dpy, m_data->m_win);
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XCloseDisplay(m_data->m_dpy);
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}
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int X11OpenGLWindow::getAsciiCodeFromVirtualKeycode(int keycode)
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{
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KeySym key, key_lc, key_uc;
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key = XKeycodeToKeysym( m_data->m_dpy, keycode, 0 );
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switch( key )
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{
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case XK_Escape: return B3G_ESCAPE;
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case XK_Return: return B3G_RETURN;
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case XK_Control_L:
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case XK_Control_R: {
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return B3G_CONTROL;
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}
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case XK_Left: return B3G_LEFT_ARROW;
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case XK_Right: return B3G_RIGHT_ARROW;
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case XK_Up: return B3G_UP_ARROW;
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case XK_Down: return B3G_DOWN_ARROW;
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case XK_Alt_L:
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case XK_Alt_R:
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{
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return B3G_ALT;
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}
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case XK_Shift_L:
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case XK_Shift_R: return B3G_SHIFT;
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case XK_F1: return B3G_F1;
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case XK_F2: return B3G_F2;
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case XK_F3: return B3G_F3;
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case XK_F4: return B3G_F4;
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case XK_F5: return B3G_F5;
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case XK_F6: return B3G_F6;
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case XK_F7: return B3G_F7;
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case XK_F8: return B3G_F8;
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case XK_F9: return B3G_F9;
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case XK_F10: return B3G_F10;
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case XK_F11: return B3G_F11;
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case XK_F12: return B3G_F12;
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case XK_F13: return B3G_F13;
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case XK_F14: return B3G_F14;
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case XK_F15: return B3G_F15;
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default:
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// Make uppercase
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XConvertCase( key, &key_lc, &key_uc );
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key = key_uc;
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// Valid ISO 8859-1 character?
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if( (key >= 32 && key <= 126) ||(key >= 160 && key <= 255) )
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{
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return (int) key;
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}
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return -1;
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}
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return 0;
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}
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void X11OpenGLWindow::pumpMessage()
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{
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int buttonState = 1;
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// Process all pending events
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while( XPending( m_data->m_dpy ) )
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{
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XNextEvent(m_data->m_dpy, &m_data->m_xev);
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// printf("#");
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// fflush(stdout);
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switch( m_data->m_xev.type )
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{
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case KeyPress:
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{
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if (m_data->m_keyboardCallback)
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{
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int keycode = getAsciiCodeFromVirtualKeycode(m_data->m_xev.xkey.keycode);
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int state = 1;
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(*m_data->m_keyboardCallback)(keycode,state);
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// printf("keycode %d",keycode);
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// fflush(stdout);
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}
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break;
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}
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case KeyRelease:
|
|
{
|
|
// fflush(stdout);
|
|
|
|
if (m_data->m_keyboardCallback)
|
|
{
|
|
|
|
unsigned short is_retriggered = 0;
|
|
///filter out keyboard repeat
|
|
//see http://stackoverflow.com/questions/2100654/ignore-auto-repeat-in-x11-applications
|
|
if (XEventsQueued(m_data->m_dpy, QueuedAfterReading))
|
|
{
|
|
XEvent nev;
|
|
XPeekEvent(m_data->m_dpy, &nev);
|
|
|
|
if (nev.type == KeyPress && nev.xkey.time == m_data->m_xev.xkey.time &&
|
|
nev.xkey.keycode == m_data->m_xev.xkey.keycode)
|
|
{
|
|
fprintf (stdout, "key #%ld was retriggered.\n",
|
|
(long) XLookupKeysym (&nev.xkey, 0));
|
|
|
|
// delete retriggered KeyPress event
|
|
XNextEvent (m_data->m_dpy, & m_data->m_xev);
|
|
is_retriggered = 1;
|
|
}
|
|
}
|
|
int keycode = getAsciiCodeFromVirtualKeycode( m_data->m_xev.xkey.keycode);
|
|
int state = 0;
|
|
(*m_data->m_keyboardCallback)(keycode,state);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case ButtonRelease:
|
|
buttonState = 0;
|
|
//continue with ButtonPress code
|
|
case ButtonPress:
|
|
{
|
|
// printf("!");
|
|
// fflush(stdout);
|
|
|
|
int button=-1;
|
|
|
|
switch (m_data->m_xev.xbutton.button)
|
|
{
|
|
case Button1:
|
|
{
|
|
button=0;
|
|
break;
|
|
}
|
|
case Button2:
|
|
{
|
|
button=1;
|
|
break;
|
|
}
|
|
case Button3:
|
|
{
|
|
button=2;
|
|
break;
|
|
}
|
|
case Button4:
|
|
{
|
|
if (m_data->m_wheelCallback)
|
|
{
|
|
(*m_data->m_wheelCallback)(0,10);
|
|
}
|
|
break;
|
|
}
|
|
case Button5:
|
|
{
|
|
if (m_data->m_wheelCallback)
|
|
{
|
|
(*m_data->m_wheelCallback)(0,-10);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
int xpos = m_data->m_xev.xmotion.x;
|
|
int ypos = m_data->m_xev.xmotion.y;
|
|
|
|
if (button>=0 && m_data->m_mouseButtonCallback)
|
|
{
|
|
// printf("xpos = %d, ypos = %d\n",xpos,ypos);
|
|
|
|
(*m_data->m_mouseButtonCallback)(button,buttonState,xpos,ypos);
|
|
}
|
|
break;
|
|
}
|
|
case MotionNotify:
|
|
{
|
|
// printf("!");
|
|
// fflush(0);
|
|
if (m_data->m_mouseMoveCallback)
|
|
{
|
|
int xpos = m_data->m_xev.xmotion.x;
|
|
int ypos = m_data->m_xev.xmotion.y;
|
|
(*m_data->m_mouseMoveCallback)(xpos,ypos);
|
|
}
|
|
break;
|
|
}
|
|
case ConfigureNotify:
|
|
{
|
|
// printf("@");
|
|
// fflush(0);
|
|
if (m_data->m_resizeCallback)
|
|
{
|
|
(*m_data->m_resizeCallback)(m_data->m_xev.xconfigure.width,m_data->m_xev.xconfigure.height);
|
|
}
|
|
break;
|
|
}
|
|
case ClientMessage:
|
|
{
|
|
// printf("?");
|
|
// fflush(stdout);
|
|
break;
|
|
}
|
|
case Expose:
|
|
{
|
|
break;
|
|
}
|
|
case DestroyNotify:
|
|
{
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
//XRRUpdateConfiguration( &event );
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void X11OpenGLWindow::startRendering()
|
|
{
|
|
pumpMessage();
|
|
|
|
XGetWindowAttributes(m_data->m_dpy, m_data->m_win, &m_data->m_gwa);
|
|
glViewport(0, 0, m_data->m_gwa.width, m_data->m_gwa.height);
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); //clear buffers
|
|
|
|
//glCullFace(GL_BACK);
|
|
//glFrontFace(GL_CCW);
|
|
glEnable(GL_DEPTH_TEST);
|
|
}
|
|
|
|
void X11OpenGLWindow::renderAllObjects()
|
|
{
|
|
|
|
}
|
|
|
|
void X11OpenGLWindow::endRendering()
|
|
{
|
|
glXSwapBuffers(m_data->m_dpy, m_data->m_win);
|
|
}
|
|
|
|
void X11OpenGLWindow::runMainLoop()
|
|
{
|
|
|
|
}
|
|
|
|
float X11OpenGLWindow::getTimeInSeconds()
|
|
{
|
|
return 0.f;
|
|
}
|
|
|
|
bool X11OpenGLWindow::requestedExit() const
|
|
{
|
|
return m_requestedExit;
|
|
}
|
|
|
|
void X11OpenGLWindow::setRequestExit()
|
|
{
|
|
m_requestedExit=true;
|
|
}
|
|
|
|
void X11OpenGLWindow::setRenderCallback( b3RenderCallback renderCallback)
|
|
{
|
|
|
|
}
|
|
|
|
void X11OpenGLWindow::setWindowTitle(const char* title)
|
|
{
|
|
XStoreName(m_data->m_dpy, m_data->m_win, title);
|
|
}
|
|
|
|
|
|
void X11OpenGLWindow::setWheelCallback(b3WheelCallback wheelCallback)
|
|
{
|
|
m_data->m_wheelCallback = wheelCallback;
|
|
}
|
|
|
|
void X11OpenGLWindow::setMouseMoveCallback(b3MouseMoveCallback mouseCallback)
|
|
{
|
|
m_data->m_mouseMoveCallback = mouseCallback;
|
|
}
|
|
|
|
void X11OpenGLWindow::setMouseButtonCallback(b3MouseButtonCallback mouseCallback)
|
|
{
|
|
m_data->m_mouseButtonCallback = mouseCallback;
|
|
}
|
|
|
|
void X11OpenGLWindow::setResizeCallback(b3ResizeCallback resizeCallback)
|
|
{
|
|
m_data->m_resizeCallback = resizeCallback;
|
|
}
|
|
|
|
void X11OpenGLWindow::setKeyboardCallback( b3KeyboardCallback keyboardCallback)
|
|
{
|
|
m_data->m_keyboardCallback = keyboardCallback;
|
|
|
|
}
|
|
|
|
b3KeyboardCallback X11OpenGLWindow::getKeyboardCallback()
|
|
{
|
|
return m_data->m_keyboardCallback;
|
|
}
|
|
|