diff options
Diffstat (limited to 'src/plugins/platforms/mirclient/qmirclientglcontext.cpp')
| -rw-r--r-- | src/plugins/platforms/mirclient/qmirclientglcontext.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/plugins/platforms/mirclient/qmirclientglcontext.cpp b/src/plugins/platforms/mirclient/qmirclientglcontext.cpp new file mode 100644 index 0000000000..bfba5051e5 --- /dev/null +++ b/src/plugins/platforms/mirclient/qmirclientglcontext.cpp @@ -0,0 +1,156 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Canonical, Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** Commercial License Usage +** 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 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 +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include "qmirclientglcontext.h" +#include "qmirclientwindow.h" +#include "qmirclientlogging.h" +#include <QtPlatformSupport/private/qeglconvenience_p.h> + +#if !defined(QT_NO_DEBUG) +static void printOpenGLESConfig() { + static bool once = true; + if (once) { + const char* string = (const char*) glGetString(GL_VENDOR); + LOG("OpenGL ES vendor: %s", string); + string = (const char*) glGetString(GL_RENDERER); + LOG("OpenGL ES renderer: %s", string); + string = (const char*) glGetString(GL_VERSION); + LOG("OpenGL ES version: %s", string); + string = (const char*) glGetString(GL_SHADING_LANGUAGE_VERSION); + LOG("OpenGL ES Shading Language version: %s", string); + string = (const char*) glGetString(GL_EXTENSIONS); + LOG("OpenGL ES extensions: %s", string); + once = false; + } +} +#endif + +static EGLenum api_in_use() +{ +#ifdef QTUBUNTU_USE_OPENGL + return EGL_OPENGL_API; +#else + return EGL_OPENGL_ES_API; +#endif +} + +QMirClientOpenGLContext::QMirClientOpenGLContext(QMirClientScreen* screen, QMirClientOpenGLContext* share) +{ + ASSERT(screen != NULL); + mEglDisplay = screen->eglDisplay(); + mScreen = screen; + + // Create an OpenGL ES 2 context. + QVector<EGLint> attribs; + attribs.append(EGL_CONTEXT_CLIENT_VERSION); + attribs.append(2); + attribs.append(EGL_NONE); + ASSERT(eglBindAPI(api_in_use()) == EGL_TRUE); + + mEglContext = eglCreateContext(mEglDisplay, screen->eglConfig(), share ? share->eglContext() : EGL_NO_CONTEXT, + attribs.constData()); + DASSERT(mEglContext != EGL_NO_CONTEXT); +} + +QMirClientOpenGLContext::~QMirClientOpenGLContext() +{ + ASSERT(eglDestroyContext(mEglDisplay, mEglContext) == EGL_TRUE); +} + +bool QMirClientOpenGLContext::makeCurrent(QPlatformSurface* surface) +{ + DASSERT(surface->surface()->surfaceType() == QSurface::OpenGLSurface); + EGLSurface eglSurface = static_cast<QMirClientWindow*>(surface)->eglSurface(); +#if defined(QT_NO_DEBUG) + eglBindAPI(api_in_use()); + eglMakeCurrent(mEglDisplay, eglSurface, eglSurface, mEglContext); +#else + ASSERT(eglBindAPI(api_in_use()) == EGL_TRUE); + ASSERT(eglMakeCurrent(mEglDisplay, eglSurface, eglSurface, mEglContext) == EGL_TRUE); + printOpenGLESConfig(); +#endif + return true; +} + +void QMirClientOpenGLContext::doneCurrent() +{ +#if defined(QT_NO_DEBUG) + eglBindAPI(api_in_use()); + eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); +#else + ASSERT(eglBindAPI(api_in_use()) == EGL_TRUE); + ASSERT(eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT) == EGL_TRUE); +#endif +} + +void QMirClientOpenGLContext::swapBuffers(QPlatformSurface* surface) +{ + QMirClientWindow *ubuntuWindow = static_cast<QMirClientWindow*>(surface); + + EGLSurface eglSurface = ubuntuWindow->eglSurface(); +#if defined(QT_NO_DEBUG) + eglBindAPI(api_in_use()); + eglSwapBuffers(mEglDisplay, eglSurface); +#else + ASSERT(eglBindAPI(api_in_use()) == EGL_TRUE); + ASSERT(eglSwapBuffers(mEglDisplay, eglSurface) == EGL_TRUE); +#endif + + // "Technique" copied from mir, in examples/eglapp.c around line 96 + EGLint newBufferWidth = -1; + EGLint newBufferHeight = -1; + /* + * Querying the surface (actually the current buffer) dimensions here is + * the only truly safe way to be sure that the dimensions we think we + * have are those of the buffer being rendered to. But this should be + * improved in future; https://bugs.launchpad.net/mir/+bug/1194384 + */ + eglQuerySurface(mEglDisplay, eglSurface, EGL_WIDTH, &newBufferWidth); + eglQuerySurface(mEglDisplay, eglSurface, EGL_HEIGHT, &newBufferHeight); + + ubuntuWindow->onBuffersSwapped_threadSafe(newBufferWidth, newBufferHeight); +} + +void (*QMirClientOpenGLContext::getProcAddress(const QByteArray& procName)) () +{ +#if defined(QT_NO_DEBUG) + eglBindAPI(api_in_use()); +#else + ASSERT(eglBindAPI(api_in_use()) == EGL_TRUE); +#endif + return eglGetProcAddress(procName.constData()); +} |