qopenvgcontext.cpp

++ // Copyright (C) 2016 The Qt Company Ltd.

++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

++

++ #include <qpa/qplatformnativeinterface.h>

++ #include <QtGui/QGuiApplication>

++ #include <QtCore/QList>

++ #include <QtCore/QDebug>

++

++ #include "qopenvgcontext_p.h"

++

++ QT_BEGIN_NAMESPACE

++

++ QOpenVGContext::QOpenVGContext(QWindow *window)

++     : m_window(window)

++ {

++     QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();

++     m_display = reinterpret_cast<EGLDisplay>(nativeInterface->nativeResourceForWindow("EglDisplay", window));

++     m_surface = reinterpret_cast<EGLSurface>(nativeInterface->nativeResourceForWindow("EglSurface", window));

++

++     if (m_display == 0)

++         qFatal("QOpenVGContext: failed to get EGLDisplay");

++     if (m_surface == 0)

++         qFatal("QOpenVGContext: failed to get EGLSurface");

++

++     EGLint configID = 0;

++     if (eglQuerySurface(m_display, m_surface, EGL_CONFIG_ID, &configID)) {

++         EGLint numConfigs;

++         const EGLint configAttribs[] = {

++             EGL_CONFIG_ID, configID,

++             EGL_NONE

++         };

++         eglChooseConfig(m_display, configAttribs, &m_config, 1, &numConfigs);

++     } else {

++         qFatal("QOpenVGContext: failed to get surface config");

++     }

++

++     // Create an EGL Context

++     eglBindAPI(EGL_OPENVG_API);

++     m_context = eglCreateContext(m_display, m_config, EGL_NO_CONTEXT, 0);

++     if (!m_context)

++         qFatal("QOpenVGContext: eglCreateContext failed");

++ }

++

++ QOpenVGContext::~QOpenVGContext()

++ {

++     doneCurrent();

++     eglDestroyContext(m_display, m_context);

++ }

++

++ void QOpenVGContext::makeCurrent()

++ {

++     makeCurrent(m_surface);

++ }

++

++ void QOpenVGContext::makeCurrent(EGLSurface surface)

++ {

++     eglMakeCurrent(m_display, surface, surface, m_context);

++ }

++

++ void QOpenVGContext::doneCurrent()

++ {

++     eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);

++ }

++

++ void QOpenVGContext::swapBuffers()

++ {

++     swapBuffers(m_surface);

++ }

++

++ void QOpenVGContext::swapBuffers(EGLSurface surface)

++ {

++     eglSwapBuffers(m_display, surface);

++ }

++

++ QWindow *QOpenVGContext::window() const

++ {

++     return m_window;

++ }

++

++ QImage QOpenVGContext::readFramebuffer(const QSize &size)

++ {

++     QImage framebufferImage(size, QImage::Format_RGB32);

++     vgReadPixels(framebufferImage.bits(), framebufferImage.bytesPerLine(), VG_sXRGB_8888, 0, 0, size.width(), size.height());

++     return std::move(framebufferImage).flipped(Qt::Vertical);

++ }

++

++ void QOpenVGContext::getConfigs()

++ {

++     EGLint configsAvailable = 0;

++     eglGetConfigs(m_display, 0, 0, &configsAvailable);

++

++     QList<EGLConfig> configs(configsAvailable);

++     eglGetConfigs(m_display, configs.data(), configs.size(), &configsAvailable);

++

++     for (EGLConfig config : configs) {

++         EGLint value;

++         eglGetConfigAttrib(m_display, config, EGL_CONFIG_ID, &value);

++         qDebug() << "#################\n" << "EGL_CONFIG_ID:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_BUFFER_SIZE, &value);

++         qDebug() << "EGL_BUFFER_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_ALPHA_SIZE, &value);

++         qDebug() << "EGL_ALPHA_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_RED_SIZE, &value);

++         qDebug() << "EGL_RED_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_GREEN_SIZE, &value);

++         qDebug() << "EGL_GREEN_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_BLUE_SIZE, &value);

++         qDebug() << "EGL_BLUE_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_DEPTH_SIZE, &value);

++         qDebug() << "EGL_DEPTH_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_STENCIL_SIZE, &value);

++         qDebug() << "EGL_STENCIL_SIZE:" << value;

++

++         eglGetConfigAttrib(m_display, config, EGL_ALPHA_MASK_SIZE, &value);

++         qDebug() << "EGL_ALPHA_MASK_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_BIND_TO_TEXTURE_RGB, &value);

++         qDebug() << "EGL_BIND_TO_TEXTURE_RGB:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_BIND_TO_TEXTURE_RGBA, &value);

++         qDebug() << "EGL_BIND_TO_TEXTURE_RGBA:" << value;

++

++

++         eglGetConfigAttrib(m_display, config, EGL_COLOR_BUFFER_TYPE, &value);

++         qDebug() << "EGL_COLOR_BUFFER_TYPE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_CONFIG_CAVEAT, &value);

++         qDebug() << "EGL_CONFIG_CAVEAT:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_CONFORMANT, &value);

++         qDebug() << "EGL_CONFORMANT:" << value;

++

++

++         eglGetConfigAttrib(m_display, config, EGL_LEVEL, &value);

++         qDebug() << "EGL_LEVEL:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_LUMINANCE_SIZE, &value);

++         qDebug() << "EGL_LUMINANCE_SIZE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_MAX_PBUFFER_WIDTH, &value);

++         qDebug() << "EGL_MAX_PBUFFER_WIDTH:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_MAX_PBUFFER_HEIGHT, &value);

++         qDebug() << "EGL_MAX_PBUFFER_HEIGHT:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_MAX_PBUFFER_PIXELS, &value);

++         qDebug() << "EGL_MAX_PBUFFER_PIXELS:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_MAX_SWAP_INTERVAL, &value);

++         qDebug() << "EGL_MAX_SWAP_INTERVAL:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_MIN_SWAP_INTERVAL, &value);

++         qDebug() << "EGL_MIN_SWAP_INTERVAL:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_NATIVE_RENDERABLE, &value);

++         qDebug() << "EGL_NATIVE_RENDERABLE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_NATIVE_VISUAL_ID, &value);

++         qDebug() << "EGL_NATIVE_VISUAL_ID:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_NATIVE_VISUAL_TYPE, &value);

++         qDebug() << "EGL_NATIVE_VISUAL_TYPE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_RENDERABLE_TYPE, &value);

++         qDebug() << "EGL_RENDERABLE_TYPE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_SAMPLE_BUFFERS, &value);

++         qDebug() << "EGL_SAMPLE_BUFFERS:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_SAMPLES, &value);

++         qDebug() << "EGL_SAMPLES:" << value;

++

++         eglGetConfigAttrib(m_display, config, EGL_SURFACE_TYPE, &value);

++         qDebug() << "EGL_SURFACE_TYPE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_TRANSPARENT_TYPE, &value);

++         qDebug() << "EGL_TRANSPARENT_TYPE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_TRANSPARENT_RED_VALUE, &value);

++         qDebug() << "EGL_TRANSPARENT_RED_VALUE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_TRANSPARENT_GREEN_VALUE, &value);

++         qDebug() << "EGL_TRANSPARENT_GREEN_VALUE:" << value;

++         eglGetConfigAttrib(m_display, config, EGL_TRANSPARENT_BLUE_VALUE, &value);

++         qDebug() << "EGL_TRANSPARENT_BLUE_VALUE:" << value;

++     }

++ }

++

++ void QOpenVGContext::checkErrors()

++ {

++     VGErrorCode error;

++     EGLint eglError;

++     do {

++         error = vgGetError();

++         eglError = eglGetError();

++         qDebug() << "error: " << QString::number(error, 16);

++         qDebug() << "eglError: " << QString::number(eglError, 16);

++     } while (error != VG_NO_ERROR && eglError != EGL_SUCCESS);

++ }

++

++ QT_END_NAMESPACE

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