--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/opengl/qglpixelbuffer_egl.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,221 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qdebug.h>
+#include "qglpixelbuffer.h"
+#include "qglpixelbuffer_p.h"
+#include "qgl_egl_p.h"
+
+#include <qimage.h>
+#include <private/qgl_p.h>
+
+#ifdef QT_OPENGL_ES_1_CL
+#include "qgl_cl_p.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#ifdef EGL_BIND_TO_TEXTURE_RGBA
+#define QGL_RENDER_TEXTURE 1
+#else
+#define QGL_RENDER_TEXTURE 0
+#endif
+
+bool QGLPixelBufferPrivate::init(const QSize &size, const QGLFormat &f, QGLWidget *shareWidget)
+{
+ // Create the EGL context.
+ ctx = new QEglContext();
+ ctx->setApi(QEgl::OpenGL);
+
+ // Open the EGL display.
+ if (!ctx->openDisplay(0)) {
+ delete ctx;
+ ctx = 0;
+ return false;
+ }
+
+ // Choose an appropriate configuration. We use the best format
+ // we can find, even if it is greater than the requested format.
+ // We try for a pbuffer that is capable of texture rendering if possible.
+ QEglProperties configProps;
+ qt_egl_set_format(configProps, QInternal::Pbuffer, f);
+ configProps.setRenderableType(ctx->api());
+ bool ok = false;
+#if QGL_RENDER_TEXTURE
+ textureFormat = EGL_TEXTURE_RGBA;
+ configProps.setValue(EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
+ ok = ctx->chooseConfig(configProps, QEgl::BestPixelFormat);
+ if (!ok) {
+ // Try again with RGB texture rendering.
+ textureFormat = EGL_TEXTURE_RGB;
+ configProps.removeValue(EGL_BIND_TO_TEXTURE_RGBA);
+ configProps.setValue(EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
+ ok = ctx->chooseConfig(configProps, QEgl::BestPixelFormat);
+ if (!ok) {
+ // One last try for a pbuffer with no texture rendering.
+ configProps.removeValue(EGL_BIND_TO_TEXTURE_RGB);
+ textureFormat = EGL_NONE;
+ }
+ }
+#else
+ textureFormat = EGL_NONE;
+#endif
+ if (!ok) {
+ if (!ctx->chooseConfig(configProps, QEgl::BestPixelFormat)) {
+ delete ctx;
+ ctx = 0;
+ return false;
+ }
+ }
+
+ // Retrieve the actual format properties.
+ qt_egl_update_format(*ctx, format);
+
+ // Create the attributes needed for the pbuffer.
+ QEglProperties attribs;
+ attribs.setValue(EGL_WIDTH, size.width());
+ attribs.setValue(EGL_HEIGHT, size.height());
+#if QGL_RENDER_TEXTURE
+ if (textureFormat != EGL_NONE) {
+ attribs.setValue(EGL_TEXTURE_FORMAT, textureFormat);
+ attribs.setValue(EGL_TEXTURE_TARGET, EGL_TEXTURE_2D);
+ }
+#endif
+
+ // Create the pbuffer surface.
+ pbuf = eglCreatePbufferSurface(ctx->display(), ctx->config(), attribs.properties());
+#if QGL_RENDER_TEXTURE
+ if (pbuf == EGL_NO_SURFACE && textureFormat != EGL_NONE) {
+ // Try again with texture rendering disabled.
+ textureFormat = EGL_NONE;
+ attribs.removeValue(EGL_TEXTURE_FORMAT);
+ attribs.removeValue(EGL_TEXTURE_TARGET);
+ pbuf = eglCreatePbufferSurface(ctx->display(), ctx->config(), attribs.properties());
+ }
+#endif
+ if (pbuf == EGL_NO_SURFACE) {
+ qWarning() << "QGLPixelBufferPrivate::init(): Unable to create EGL pbuffer surface:" << QEglContext::errorString(eglGetError());
+ return false;
+ }
+
+ // Create a new context for the configuration.
+ QEglContext *shareContext = 0;
+ if (shareWidget && shareWidget->d_func()->glcx)
+ shareContext = shareWidget->d_func()->glcx->d_func()->eglContext;
+ if (!ctx->createContext(shareContext)) {
+ delete ctx;
+ ctx = 0;
+ return false;
+ }
+
+ return true;
+}
+
+bool QGLPixelBufferPrivate::cleanup()
+{
+ // No need to destroy "pbuf" here - it is done in QGLContext::reset().
+ return true;
+}
+
+bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)
+{
+#if QGL_RENDER_TEXTURE
+ Q_D(QGLPixelBuffer);
+ if (d->invalid || d->textureFormat == EGL_NONE || !d->ctx)
+ return false;
+ glBindTexture(GL_TEXTURE_2D, texture_id);
+ return eglBindTexImage(d->ctx->display(), d->pbuf, EGL_BACK_BUFFER);
+#else
+ Q_UNUSED(texture_id);
+ return false;
+#endif
+}
+
+void QGLPixelBuffer::releaseFromDynamicTexture()
+{
+#if QGL_RENDER_TEXTURE
+ Q_D(QGLPixelBuffer);
+ if (d->invalid || d->textureFormat == EGL_NONE || !d->ctx)
+ return;
+ eglReleaseTexImage(d->ctx->display(), d->pbuf, EGL_BACK_BUFFER);
+#endif
+}
+
+
+GLuint QGLPixelBuffer::generateDynamicTexture() const
+{
+#if QGL_RENDER_TEXTURE
+ Q_D(const QGLPixelBuffer);
+ GLuint texture;
+ glGenTextures(1, &texture);
+ glBindTexture(GL_TEXTURE_2D, texture);
+ if (d->textureFormat == EGL_TEXTURE_RGB)
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, d->req_size.width(), d->req_size.height(), 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+ else
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, d->req_size.width(), d->req_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ return texture;
+#else
+ return 0;
+#endif
+}
+
+bool QGLPixelBuffer::hasOpenGLPbuffers()
+{
+ // See if we have at least 1 configuration that matches the default format.
+ EGLDisplay dpy = QEglContext::defaultDisplay(0);
+ if (dpy == EGL_NO_DISPLAY)
+ return false;
+ QEglProperties configProps;
+ qt_egl_set_format(configProps, QInternal::Pbuffer, QGLFormat::defaultFormat());
+ configProps.setRenderableType(QEgl::OpenGL);
+ do {
+ EGLConfig cfg = 0;
+ EGLint matching = 0;
+ if (eglChooseConfig(dpy, configProps.properties(),
+ &cfg, 1, &matching) && matching > 0)
+ return true;
+ } while (configProps.reduceConfiguration());
+ return false;
+}
+
+QT_END_NAMESPACE