Merge branch 'master' into vulkan
This commit is contained in:
Lynix
302
src/Nazara/Renderer/GLX/ContextImpl.cpp
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302
src/Nazara/Renderer/GLX/ContextImpl.cpp
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Renderer module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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// Code inspiré de NeHe (Lesson1) et de la SFML par Laurent Gomila
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#include <Nazara/Renderer/GLX/ContextImpl.hpp>
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#include <Nazara/Core/CallOnExit.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Renderer/Context.hpp>
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#include <Nazara/Renderer/Debug.hpp>
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using namespace GLX;
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namespace Nz
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{
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namespace
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{
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Display* m_display;
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int m_sharedDisplay = 0;
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bool ctxErrorOccurred = false;
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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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}
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ContextImpl::ContextImpl() :
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m_colormap(0),
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m_context(0),
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m_window(0),
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m_ownsWindow(false)
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{
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if (m_sharedDisplay == 0)
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m_display = XOpenDisplay(nullptr);
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++m_sharedDisplay;
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}
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ContextImpl::~ContextImpl()
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{
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Destroy();
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if (--m_sharedDisplay == 0)
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{
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XCloseDisplay(m_display);
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m_display = nullptr;
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}
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}
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bool ContextImpl::Activate() const
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{
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return glXMakeCurrent(m_display, m_window, m_context) == true;
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}
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bool ContextImpl::Create(ContextParameters& parameters)
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{
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// En cas d'exception, la ressource sera quand même libérée
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CallOnExit onExit([this] ()
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{
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Destroy();
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});
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// Get a matching FB config
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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_BUFFER_SIZE, parameters.bitsPerPixel,
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GLX_ALPHA_SIZE, (parameters.bitsPerPixel == 32) ? 8 : 0,
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GLX_DEPTH_SIZE, parameters.depthBits,
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GLX_STENCIL_SIZE, parameters.stencilBits,
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GLX_DOUBLEBUFFER, True,
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GLX_SAMPLE_BUFFERS, (parameters.antialiasingLevel > 0) ? True : False,
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GLX_SAMPLES, parameters.antialiasingLevel,
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None
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};
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int glx_major = 0;
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int glx_minor = 0;
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// FBConfigs were added in GLX version 1.3.
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if (!glXQueryVersion(m_display, &glx_major, &glx_minor) || ((glx_major == 1) && (glx_minor < 3)) || (glx_major < 1))
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{
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NazaraError("Invalid GLX version, version > 1.3 is required.");
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return false;
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}
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int fbcount;
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GLXFBConfig* fbc = glXChooseFBConfig(m_display, XDefaultScreen(m_display), visual_attribs, &fbcount);
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if (!fbc)
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{
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NazaraError("Failed to retrieve a framebuffer config");
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return false;
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}
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// Pick the FB config/visual with the most samples per pixel
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int best_fbc = -1;
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int worst_fbc = -1;
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int best_num_samp = -1;
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int worst_num_samp = 999;
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for (int i = 0; i < fbcount; ++i)
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{
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XVisualInfo* vi = glXGetVisualFromFBConfig(m_display, fbc[i]);
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if (vi)
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{
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int samp_buf = 0, samples = 0;
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glXGetFBConfigAttrib(m_display, fbc[i], GLX_SAMPLE_BUFFERS, &samp_buf);
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glXGetFBConfigAttrib(m_display, fbc[i], GLX_SAMPLES , &samples );
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if ((best_fbc < 0) || (samp_buf && (samples > best_num_samp)))
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{
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best_fbc = i;
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best_num_samp = samples;
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}
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if ((worst_fbc < 0) || !samp_buf || (samples < worst_num_samp))
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{
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worst_fbc = i;
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worst_num_samp = samples;
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}
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}
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XFree(vi);
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}
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GLXFBConfig 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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// Get a visual
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XVisualInfo* vi = glXGetVisualFromFBConfig(m_display, bestFbc);
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if (!vi)
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{
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NazaraError("Failed to get best VisualInfo");
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return false;
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}
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// If context is shared by multiple windows
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if (parameters.window)
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{
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NazaraAssert(parameters.window.type == WindowManager::X11, "Cannot create a context for a non-x11 window");
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m_window = static_cast<GLX::Window>(parameters.window.x11.window);
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m_ownsWindow = false;
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}
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else
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{
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XSetWindowAttributes swa;
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swa.colormap = m_colormap = XCreateColormap(
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m_display,
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XRootWindow(
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m_display,
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vi->screen),
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vi->visual,
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AllocNone
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);
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swa.background_pixmap = None;
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swa.border_pixel = 0;
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swa.event_mask = StructureNotifyMask;
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if (!m_colormap)
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{
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NazaraError("Failed to create colormap for context");
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return false;
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}
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m_window = XCreateWindow(
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m_display,
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XRootWindow(
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m_display,
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vi->screen),
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0, 0, // X, Y
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1, 1, // W H
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0,
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vi->depth,
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InputOutput,
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vi->visual,
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CWBorderPixel | CWColormap | CWEventMask,
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&swa
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);
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m_ownsWindow = true;
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}
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if (!m_window)
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{
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NazaraError("Failed to create window");
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return false;
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}
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// Done with the visual info data
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XFree(vi);
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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 (!glXCreateContextAttribs)
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{
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NazaraWarning("glXCreateContextAttribs() not found. Using old-style GLX context");
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m_context = glXCreateNewContext(m_display, bestFbc, GLX_RGBA_TYPE, parameters.shared ? parameters.shareContext->m_impl->m_context : 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 profile = parameters.compatibilityProfile ? GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB : GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
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int debug = parameters.debugMode ? GLX_CONTEXT_DEBUG_BIT_ARB : 0;
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int major = 3;//parameters.majorVersion;
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int minor = 3;//parameters.minorVersion;
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int context_attribs[] =
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{
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GLX_CONTEXT_MAJOR_VERSION_ARB, major,
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GLX_CONTEXT_MINOR_VERSION_ARB, minor,
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GLX_CONTEXT_PROFILE_MASK_ARB, profile,
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GLX_CONTEXT_FLAGS_ARB, debug,
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None, None
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};
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m_context = glXCreateContextAttribs(
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m_display,
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bestFbc,
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parameters.shared ? parameters.shareContext->m_impl->m_context : 0,
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True,
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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_display, False);
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XSetErrorHandler(oldHandler);
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if (ctxErrorOccurred || !m_context)
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{
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NazaraError("Failed to create context, check the version");
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return false;
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}
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onExit.Reset();
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return true;
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}
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void ContextImpl::Destroy()
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{
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// Destroy the context
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if (m_context)
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{
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if (glXGetCurrentContext() == m_context)
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glXMakeCurrent(m_display, None, nullptr);
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glXDestroyContext(m_display, m_context);
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m_context = nullptr;
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}
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// Destroy the window if we own it
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if (m_ownsWindow && m_window)
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{
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XFreeColormap(m_display, m_colormap);
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XDestroyWindow(m_display, m_window);
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m_ownsWindow = false;
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m_window = 0;
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XFlush(m_display);
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}
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}
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void ContextImpl::EnableVerticalSync(bool enabled)
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{
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if (glXSwapIntervalEXT)
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glXSwapIntervalEXT(m_display, glXGetCurrentDrawable(), enabled ? 1 : 0);
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else if (NzglXSwapIntervalMESA)
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NzglXSwapIntervalMESA(enabled ? 1 : 0);
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else if (glXSwapIntervalSGI)
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glXSwapIntervalSGI(enabled ? 1 : 0);
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else
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NazaraError("Vertical sync not supported");
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}
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void ContextImpl::SwapBuffers()
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{
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if (m_window)
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glXSwapBuffers(m_display, m_window);
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}
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bool ContextImpl::Desactivate()
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{
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return glXMakeCurrent(m_display, None, nullptr) == true;
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}
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}
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@@ -15,7 +15,7 @@ namespace Nz
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{
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if (m_framerateLimit > 0)
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{
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int remainingTime = 1000/static_cast<int>(m_framerateLimit) - static_cast<int>(m_clock.GetMilliseconds());
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int remainingTime = 1000 / static_cast<int>(m_framerateLimit) - static_cast<int>(m_clock.GetMilliseconds());
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if (remainingTime > 0)
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std::this_thread::sleep_for(std::chrono::milliseconds(remainingTime));
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@@ -38,7 +38,7 @@ namespace Nz
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bool RenderWindow::OnWindowCreated()
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{
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RendererImpl* rendererImpl = Renderer::GetRendererImpl();
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RendererImpl *rendererImpl = Renderer::GetRendererImpl();
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auto surface = rendererImpl->CreateRenderSurfaceImpl();
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if (!surface->Create(GetHandle()))
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{
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@@ -49,25 +49,26 @@ namespace Nz
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auto impl = rendererImpl->CreateRenderWindowImpl();
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if (!impl->Create(rendererImpl, surface.get(), GetSize(), m_parameters))
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{
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NazaraError("Failed to create render window implementation: " + Error::GetLastError());
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return false;
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{
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NazaraError("Failed to create render window implementation: " + Error::GetLastError());
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return false;
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}
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m_impl = std::move(impl);
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m_surface = std::move(surface);
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m_clock.Restart();
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return true;
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}
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m_impl = std::move(impl);
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m_surface = std::move(surface);
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void RenderWindow::OnWindowDestroy()
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{
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m_impl.reset();
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m_surface.reset();
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}
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m_clock.Restart();
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return true;
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void RenderWindow::OnWindowResized()
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{
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}
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}
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void RenderWindow::OnWindowDestroy()
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{
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m_impl.reset();
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m_surface.reset();
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}
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void RenderWindow::OnWindowResized()
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{
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}
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}
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