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226 lines
8.3 KiB
226 lines
8.3 KiB
/******************************************************************** |
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KWin - the KDE window manager |
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This file is part of the KDE project. |
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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include "abstractplatformcontext.h" |
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#include "integration.h" |
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#include <logging.h> |
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namespace KWin |
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{ |
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namespace QPA |
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{ |
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static bool isOpenGLES() |
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{ |
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if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) { |
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return true; |
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} |
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return QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES; |
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} |
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static EGLConfig configFromGLFormat(EGLDisplay dpy, const QSurfaceFormat &format) |
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{ |
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#define SIZE( __buffer__ ) format.__buffer__##BufferSize() > 0 ? format.__buffer__##BufferSize() : 0 |
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// not setting samples as QtQuick doesn't need it |
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const EGLint config_attribs[] = { |
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT, |
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EGL_RED_SIZE, SIZE(red), |
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EGL_GREEN_SIZE, SIZE(green), |
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EGL_BLUE_SIZE, SIZE(blue), |
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EGL_ALPHA_SIZE, SIZE(alpha), |
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EGL_DEPTH_SIZE, SIZE(depth), |
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EGL_STENCIL_SIZE, SIZE(stencil), |
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EGL_RENDERABLE_TYPE, isOpenGLES() ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_BIT, |
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EGL_NONE, |
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}; |
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qCDebug(KWIN_QPA) << "Trying to find a format with: rgba/depth/stencil" << (SIZE(red)) << (SIZE(green)) <<( SIZE(blue)) << (SIZE(alpha)) << (SIZE(depth)) << (SIZE(stencil)); |
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#undef SIZE |
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EGLint count; |
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EGLConfig configs[1024]; |
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if (eglChooseConfig(dpy, config_attribs, configs, 1, &count) == EGL_FALSE) { |
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qCWarning(KWIN_QPA) << "eglChooseConfig failed"; |
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return 0; |
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} |
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if (count != 1) { |
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qCWarning(KWIN_QPA) << "eglChooseConfig did not return any configs"; |
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return 0; |
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} |
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return configs[0]; |
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} |
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static QSurfaceFormat formatFromConfig(EGLDisplay dpy, EGLConfig config) |
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{ |
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QSurfaceFormat format; |
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EGLint value = 0; |
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#define HELPER(__egl__, __qt__) \ |
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eglGetConfigAttrib(dpy, config, EGL_##__egl__, &value); \ |
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format.set##__qt__(value); \ |
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value = 0; |
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#define BUFFER_HELPER(__eglColor__, __color__) \ |
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HELPER(__eglColor__##_SIZE, __color__##BufferSize) |
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BUFFER_HELPER(RED, Red) |
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BUFFER_HELPER(GREEN, Green) |
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BUFFER_HELPER(BLUE, Blue) |
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BUFFER_HELPER(ALPHA, Alpha) |
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BUFFER_HELPER(STENCIL, Stencil) |
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BUFFER_HELPER(DEPTH, Depth) |
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#undef BUFFER_HELPER |
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HELPER(SAMPLES, Samples) |
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#undef HELPER |
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format.setRenderableType(isOpenGLES() ? QSurfaceFormat::OpenGLES : QSurfaceFormat::OpenGL); |
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format.setStereo(false); |
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return format; |
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} |
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AbstractPlatformContext::AbstractPlatformContext(QOpenGLContext *context, Integration *integration, EGLDisplay display) |
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: QPlatformOpenGLContext() |
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, m_integration(integration) |
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, m_eglDisplay(display) |
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, m_config(configFromGLFormat(m_eglDisplay, context->format())) |
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, m_format(formatFromConfig(m_eglDisplay, m_config)) |
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{ |
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} |
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AbstractPlatformContext::~AbstractPlatformContext() |
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{ |
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if (m_context != EGL_NO_CONTEXT) { |
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eglDestroyContext(m_eglDisplay, m_context); |
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} |
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} |
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void AbstractPlatformContext::doneCurrent() |
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{ |
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eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
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} |
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QSurfaceFormat AbstractPlatformContext::format() const |
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{ |
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return m_format; |
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} |
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#if (QT_VERSION < QT_VERSION_CHECK(5, 7, 0)) |
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QFunctionPointer AbstractPlatformContext::getProcAddress(const QByteArray &procName) |
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{ |
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return eglGetProcAddress(procName.constData()); |
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} |
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#else |
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QFunctionPointer AbstractPlatformContext::getProcAddress(const char *procName) |
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{ |
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return eglGetProcAddress(procName); |
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} |
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#endif |
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bool AbstractPlatformContext::isValid() const |
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{ |
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return m_context != EGL_NO_CONTEXT; |
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} |
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bool AbstractPlatformContext::bindApi() |
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{ |
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if (eglBindAPI(isOpenGLES() ? EGL_OPENGL_ES_API : EGL_OPENGL_API) == EGL_FALSE) { |
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qCWarning(KWIN_QPA) << "eglBindAPI failed"; |
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return false; |
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} |
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return true; |
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} |
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void AbstractPlatformContext::createContext(EGLContext shareContext) |
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{ |
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const QByteArray eglExtensions = eglQueryString(eglDisplay(), EGL_EXTENSIONS); |
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const QList<QByteArray> extensions = eglExtensions.split(' '); |
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const bool haveRobustness = extensions.contains(QByteArrayLiteral("EGL_EXT_create_context_robustness")); |
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const bool haveCreateContext = extensions.contains(QByteArrayLiteral("EGL_KHR_create_context")); |
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EGLContext context = EGL_NO_CONTEXT; |
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if (isOpenGLES()) { |
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if (haveCreateContext && haveRobustness) { |
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const EGLint context_attribs[] = { |
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EGL_CONTEXT_CLIENT_VERSION, 2, |
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EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT, EGL_TRUE, |
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EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT, EGL_LOSE_CONTEXT_ON_RESET_EXT, |
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EGL_NONE |
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}; |
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context = eglCreateContext(eglDisplay(), config(), shareContext, context_attribs); |
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} |
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if (context == EGL_NO_CONTEXT) { |
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const EGLint context_attribs[] = { |
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EGL_CONTEXT_CLIENT_VERSION, 2, |
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EGL_NONE |
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}; |
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context = eglCreateContext(eglDisplay(), config(), shareContext, context_attribs); |
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} |
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} else { |
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// Try to create a 3.1 core context |
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if (m_format.majorVersion() >= 3 && haveCreateContext) { |
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if (haveRobustness) { |
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const int attribs[] = { |
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EGL_CONTEXT_MAJOR_VERSION_KHR, m_format.majorVersion(), |
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EGL_CONTEXT_MINOR_VERSION_KHR, m_format.minorVersion(), |
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EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, EGL_LOSE_CONTEXT_ON_RESET_KHR, |
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EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR | EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR, |
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EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, m_format.profile() == QSurfaceFormat::CoreProfile ? EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR : EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR, |
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EGL_NONE |
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}; |
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context = eglCreateContext(eglDisplay(), config(), shareContext, attribs); |
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} |
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if (context == EGL_NO_CONTEXT) { |
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// try without robustness |
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const EGLint attribs[] = { |
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EGL_CONTEXT_MAJOR_VERSION_KHR, m_format.majorVersion(), |
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EGL_CONTEXT_MINOR_VERSION_KHR, m_format.minorVersion(), |
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EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR, |
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EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, m_format.profile() == QSurfaceFormat::CoreProfile ? EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR : EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR, |
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EGL_NONE |
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}; |
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context = eglCreateContext(eglDisplay(), config(), shareContext, attribs); |
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} |
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} |
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if (context == EGL_NO_CONTEXT && haveRobustness && haveCreateContext) { |
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const int attribs[] = { |
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EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR, |
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EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, EGL_LOSE_CONTEXT_ON_RESET_KHR, |
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EGL_NONE |
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}; |
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context = eglCreateContext(eglDisplay(), config(), shareContext, attribs); |
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} |
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if (context == EGL_NO_CONTEXT) { |
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// and last but not least: try without robustness |
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const EGLint attribs[] = { |
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EGL_NONE |
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}; |
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context = eglCreateContext(eglDisplay(), config(), shareContext, attribs); |
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} |
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} |
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if (context == EGL_NO_CONTEXT) { |
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qCWarning(KWIN_QPA) << "Failed to create EGL context"; |
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return; |
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} |
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m_context = context; |
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} |
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} |
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}
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