diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowsglcontext.cpp')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowsglcontext.cpp | 63 |
1 files changed, 55 insertions, 8 deletions
diff --git a/src/plugins/platforms/windows/qwindowsglcontext.cpp b/src/plugins/platforms/windows/qwindowsglcontext.cpp index 3348241d37..7a17942b27 100644 --- a/src/plugins/platforms/windows/qwindowsglcontext.cpp +++ b/src/plugins/platforms/windows/qwindowsglcontext.cpp @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. ** @@ -10,9 +10,9 @@ ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser @@ -23,8 +23,8 @@ ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** $QT_END_LICENSE$ @@ -135,6 +135,10 @@ #define GL_CONTEXT_FLAG_DEBUG_BIT 0x00000002 #endif +// Common GL and WGL constants +#define RESET_NOTIFICATION_STRATEGY_ARB 0x8256 +#define LOSE_CONTEXT_ON_RESET_ARB 0x8252 + QT_BEGIN_NAMESPACE QWindowsOpengl32DLL QOpenGLStaticContext::opengl32; @@ -747,6 +751,12 @@ static HGLRC createContext(const QOpenGLStaticContext &staticContext, break; } } + + if (format.testOption(QSurfaceFormat::ResetNotification)) { + attributes[attribIndex++] = RESET_NOTIFICATION_STRATEGY_ARB; + attributes[attribIndex++] = LOSE_CONTEXT_ON_RESET_ARB; + } + qCDebug(lcQpaGl) << __FUNCTION__ << "Creating context version" << majorVersion << '.' << minorVersion << attribIndex / 2 << "attributes"; @@ -859,6 +869,10 @@ QWindowsOpenGLContextFormat QWindowsOpenGLContextFormat::current() result.options |= QSurfaceFormat::DeprecatedFunctions; if (value & GL_CONTEXT_FLAG_DEBUG_BIT) result.options |= QSurfaceFormat::DebugContext; + value = 0; + QOpenGLStaticContext::opengl32.glGetIntegerv(RESET_NOTIFICATION_STRATEGY_ARB, &value); + if (value == LOSE_CONTEXT_ON_RESET_ARB) + result.options |= QSurfaceFormat::ResetNotification; if (result.version < 0x0302) return result; // v3.2 onwards: Profiles @@ -1032,7 +1046,9 @@ QWindowsGLContext::QWindowsGLContext(QOpenGLStaticContext *staticContext, m_pixelFormat(0), m_extensionsUsed(false), m_swapInterval(-1), - m_ownsContext(true) + m_ownsContext(true), + m_getGraphicsResetStatus(0), + m_lost(false) { if (!m_staticContext) // Something went very wrong. Stop here, isValid() will return false. return; @@ -1212,6 +1228,28 @@ bool QWindowsGLContext::updateObtainedParams(HDC hdc, int *obtainedSwapInterval) if (m_staticContext->wglGetSwapInternalExt && obtainedSwapInterval) *obtainedSwapInterval = m_staticContext->wglGetSwapInternalExt(); + bool hasRobustness = false; + if (m_obtainedFormat.majorVersion() < 3) { + const char *exts = (const char *) QOpenGLStaticContext::opengl32.glGetString(GL_EXTENSIONS); + hasRobustness = exts && strstr(exts, "GL_ARB_robustness"); + } else { + typedef const GLubyte * (APIENTRY *glGetStringi_t)(GLenum, GLuint); + glGetStringi_t glGetStringi = (glGetStringi_t) QOpenGLStaticContext::opengl32.wglGetProcAddress("glGetStringi"); + if (glGetStringi) { + GLint n = 0; + QOpenGLStaticContext::opengl32.glGetIntegerv(GL_NUM_EXTENSIONS, &n); + for (GLint i = 0; i < n; ++i) { + const char *p = (const char *) glGetStringi(GL_EXTENSIONS, i); + if (p && !strcmp(p, "GL_ARB_robustness")) { + hasRobustness = true; + break; + } + } + } + } + if (hasRobustness) + m_getGraphicsResetStatus = (GLenum (APIENTRY *)()) QOpenGLStaticContext::opengl32.wglGetProcAddress("glGetGraphicsResetStatusARB"); + QOpenGLStaticContext::opengl32.wglMakeCurrent(prevSurface, prevContext); return true; } @@ -1297,7 +1335,16 @@ bool QWindowsGLContext::makeCurrent(QPlatformSurface *surface) } m_windowContexts.append(newContext); + m_lost = false; bool success = QOpenGLStaticContext::opengl32.wglMakeCurrent(newContext.hdc, newContext.renderingContext); + if (!success) { + if (m_getGraphicsResetStatus && m_getGraphicsResetStatus()) { + m_lost = true; + qCDebug(lcQpaGl) << "makeCurrent(): context loss detected" << this; + // Drop the surface. Will recreate on the next makeCurrent. + window->invalidateSurface(); + } + } // Set the swap interval if (m_staticContext->wglSwapInternalExt) { |