diff options
Diffstat (limited to 'src/gui/egl/qeglproperties.cpp')
| -rw-r--r-- | src/gui/egl/qeglproperties.cpp | 563 |
1 files changed, 563 insertions, 0 deletions
diff --git a/src/gui/egl/qeglproperties.cpp b/src/gui/egl/qeglproperties.cpp new file mode 100644 index 0000000000..71cceb7704 --- /dev/null +++ b/src/gui/egl/qeglproperties.cpp @@ -0,0 +1,563 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui 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 <QtCore/qdebug.h> +#include <QtCore/qstringlist.h> + +#include "qeglproperties_p.h" +#include "qeglcontext_p.h" + +QT_BEGIN_NAMESPACE + +// Initialize a property block. +QEglProperties::QEglProperties() +{ + props.append(EGL_NONE); +} + +QEglProperties::QEglProperties(EGLConfig cfg) +{ + props.append(EGL_NONE); + for (int name = 0x3020; name <= 0x304F; ++name) { + EGLint value; + if (name != EGL_NONE && eglGetConfigAttrib(QEgl::display(), cfg, name, &value)) + setValue(name, value); + } + eglGetError(); // Clear the error state. +} + +// Fetch the current value associated with a property. +int QEglProperties::value(int name) const +{ + for (int index = 0; index < (props.size() - 1); index += 2) { + if (props[index] == name) + return props[index + 1]; + } + + // If the attribute has not been explicitly set, return the EGL default + // The following defaults were taken from the EGL 1.4 spec: + switch(name) { + case EGL_BUFFER_SIZE: return 0; + case EGL_RED_SIZE: return 0; + case EGL_GREEN_SIZE: return 0; + case EGL_BLUE_SIZE: return 0; + case EGL_ALPHA_SIZE: return 0; +#ifdef EGL_LUMINANCE_SIZE + case EGL_LUMINANCE_SIZE: return 0; +#endif +#ifdef EGL_ALPHA_MASK_SIZE + case EGL_ALPHA_MASK_SIZE: return 0; +#endif +#ifdef EGL_BIND_TO_TEXTURE_RGB + case EGL_BIND_TO_TEXTURE_RGB: return EGL_DONT_CARE; +#endif +#ifdef EGL_BIND_TO_TEXTURE_RGBA + case EGL_BIND_TO_TEXTURE_RGBA: return EGL_DONT_CARE; +#endif +#ifdef EGL_COLOR_BUFFER_TYPE + case EGL_COLOR_BUFFER_TYPE: return EGL_RGB_BUFFER; +#endif + case EGL_CONFIG_CAVEAT: return EGL_DONT_CARE; + case EGL_CONFIG_ID: return EGL_DONT_CARE; + case EGL_DEPTH_SIZE: return 0; + case EGL_LEVEL: return 0; + case EGL_NATIVE_RENDERABLE: return EGL_DONT_CARE; + case EGL_NATIVE_VISUAL_TYPE: return EGL_DONT_CARE; + case EGL_MAX_SWAP_INTERVAL: return EGL_DONT_CARE; + case EGL_MIN_SWAP_INTERVAL: return EGL_DONT_CARE; +#ifdef EGL_RENDERABLE_TYPE + case EGL_RENDERABLE_TYPE: return EGL_OPENGL_ES_BIT; +#endif + case EGL_SAMPLE_BUFFERS: return 0; + case EGL_SAMPLES: return 0; + case EGL_STENCIL_SIZE: return 0; + case EGL_SURFACE_TYPE: return EGL_WINDOW_BIT; + case EGL_TRANSPARENT_TYPE: return EGL_NONE; + case EGL_TRANSPARENT_RED_VALUE: return EGL_DONT_CARE; + case EGL_TRANSPARENT_GREEN_VALUE: return EGL_DONT_CARE; + case EGL_TRANSPARENT_BLUE_VALUE: return EGL_DONT_CARE; + +#ifdef EGL_VERSION_1_3 + case EGL_CONFORMANT: return 0; + case EGL_MATCH_NATIVE_PIXMAP: return EGL_NONE; +#endif + + case EGL_MAX_PBUFFER_HEIGHT: + case EGL_MAX_PBUFFER_WIDTH: + case EGL_MAX_PBUFFER_PIXELS: + case EGL_NATIVE_VISUAL_ID: + case EGL_NONE: + // Attribute does not affect config selection. + return EGL_DONT_CARE; + default: + // Attribute is unknown in EGL <= 1.4. + return EGL_DONT_CARE; + } +} + +// Set the value associated with a property, replacing an existing +// value if there is one. +void QEglProperties::setValue(int name, int value) +{ + for (int index = 0; index < (props.size() - 1); index += 2) { + if (props[index] == name) { + props[index + 1] = value; + return; + } + } + props[props.size() - 1] = name; + props.append(value); + props.append(EGL_NONE); +} + +// Remove a property value. Returns false if the property is not present. +bool QEglProperties::removeValue(int name) +{ + for (int index = 0; index < (props.size() - 1); index += 2) { + if (props[index] == name) { + while ((index + 2) < props.size()) { + props[index] = props[index + 2]; + ++index; + } + props.resize(props.size() - 2); + return true; + } + } + return false; +} + +void QEglProperties::setDeviceType(int devType) +{ + if (devType == QInternal::Pixmap || devType == QInternal::Image) + setValue(EGL_SURFACE_TYPE, EGL_PIXMAP_BIT); + else if (devType == QInternal::Pbuffer) + setValue(EGL_SURFACE_TYPE, EGL_PBUFFER_BIT); + else + setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT); +} + + +// Sets the red, green, blue, and alpha sizes based on a pixel format. +// Normally used to match a configuration request to the screen format. +void QEglProperties::setPixelFormat(QImage::Format pixelFormat) +{ + int red, green, blue, alpha; + switch (pixelFormat) { + case QImage::Format_RGB32: + case QImage::Format_RGB888: + red = green = blue = 8; alpha = 0; break; + case QImage::Format_ARGB32: + case QImage::Format_ARGB32_Premultiplied: + red = green = blue = alpha = 8; break; + case QImage::Format_RGB16: + red = 5; green = 6; blue = 5; alpha = 0; break; + case QImage::Format_ARGB8565_Premultiplied: + red = 5; green = 6; blue = 5; alpha = 8; break; + case QImage::Format_RGB666: + red = green = blue = 6; alpha = 0; break; + case QImage::Format_ARGB6666_Premultiplied: + red = green = blue = alpha = 6; break; + case QImage::Format_RGB555: + red = green = blue = 5; alpha = 0; break; + case QImage::Format_ARGB8555_Premultiplied: + red = green = blue = 5; alpha = 8; break; + case QImage::Format_RGB444: + red = green = blue = 4; alpha = 0; break; + case QImage::Format_ARGB4444_Premultiplied: + red = green = blue = alpha = 4; break; + default: + qWarning() << "QEglProperties::setPixelFormat(): Unsupported pixel format"; + red = green = blue = alpha = 1; break; + } + setValue(EGL_RED_SIZE, red); + setValue(EGL_GREEN_SIZE, green); + setValue(EGL_BLUE_SIZE, blue); + setValue(EGL_ALPHA_SIZE, alpha); +} + +void QEglProperties::setRenderableType(QEgl::API api) +{ +#ifdef EGL_RENDERABLE_TYPE +#if defined(QT_OPENGL_ES_2) + if (api == QEgl::OpenGL) + setValue(EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT); +#elif defined(QT_OPENGL_ES) + if (api == QEgl::OpenGL) + setValue(EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT); +#elif defined(EGL_OPENGL_BIT) + if (api == QEgl::OpenGL) + setValue(EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT); +#endif +#ifdef EGL_OPENVG_BIT + if (api == QEgl::OpenVG) + setValue(EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT); +#endif +#else + Q_UNUSED(api); +#endif +} + +// Reduce the complexity of a configuration request to ask for less +// because the previous request did not result in success. Returns +// true if the complexity was reduced, or false if no further +// reductions in complexity are possible. +bool QEglProperties::reduceConfiguration() +{ +#ifdef EGL_SWAP_BEHAVIOR + if (value(EGL_SWAP_BEHAVIOR) != EGL_DONT_CARE) + removeValue(EGL_SWAP_BEHAVIOR); +#endif + +#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT + // For OpenVG, we sometimes try to create a surface using a pre-multiplied format. If we can't + // find a config which supports pre-multiplied formats, remove the flag on the surface type: + EGLint surfaceType = value(EGL_SURFACE_TYPE); + if (surfaceType & EGL_VG_ALPHA_FORMAT_PRE_BIT) { + surfaceType ^= EGL_VG_ALPHA_FORMAT_PRE_BIT; + setValue(EGL_SURFACE_TYPE, surfaceType); + return true; + } +#endif + // EGL chooses configs with the highest color depth over + // those with smaller (but faster) lower color depths. One + // way around this is to set EGL_BUFFER_SIZE to 16, which + // trumps the others. Of course, there may not be a 16-bit + // config available, so it's the first restraint we remove. + if (value(EGL_BUFFER_SIZE) == 16) { + removeValue(EGL_BUFFER_SIZE); + return true; + } + if (removeValue(EGL_SAMPLE_BUFFERS)) { + removeValue(EGL_SAMPLES); + return true; + } + if (removeValue(EGL_ALPHA_SIZE)) { +#if defined(EGL_BIND_TO_TEXTURE_RGBA) && defined(EGL_BIND_TO_TEXTURE_RGB) + if (removeValue(EGL_BIND_TO_TEXTURE_RGBA)) + setValue(EGL_BIND_TO_TEXTURE_RGB, TRUE); +#endif + return true; + } + if (removeValue(EGL_STENCIL_SIZE)) + return true; + if (removeValue(EGL_DEPTH_SIZE)) + return true; +#ifdef EGL_BIND_TO_TEXTURE_RGB + if (removeValue(EGL_BIND_TO_TEXTURE_RGB)) + return true; +#endif + return false; +} + +static void addTag(QString& str, const QString& tag) +{ + int lastnl = str.lastIndexOf(QLatin1String("\n")); + if (lastnl == -1) + lastnl = 0; + if ((str.length() - lastnl) >= 50) + str += QLatin1String("\n "); + str += tag; +} + +// Convert a property list to a string suitable for debug output. +QString QEglProperties::toString() const +{ + QString str; + int val; + + val = value(EGL_CONFIG_ID); + if (val != EGL_DONT_CARE) { + str += QLatin1String("id="); + str += QString::number(val); + str += QLatin1Char(' '); + } + +#ifdef EGL_RENDERABLE_TYPE + val = value(EGL_RENDERABLE_TYPE); + if (val != EGL_DONT_CARE) { + str += QLatin1String("type="); + QStringList types; + if ((val & EGL_OPENGL_ES_BIT) != 0) + types += QLatin1String("es1"); +#ifdef EGL_OPENGL_ES2_BIT + if ((val & EGL_OPENGL_ES2_BIT) != 0) + types += QLatin1String("es2"); +#endif +#ifdef EGL_OPENGL_BIT + if ((val & EGL_OPENGL_BIT) != 0) + types += QLatin1String("gl"); +#endif + if ((val & EGL_OPENVG_BIT) != 0) + types += QLatin1String("vg"); + if ((val & ~7) != 0) + types += QString::number(val); + str += types.join(QLatin1String(",")); + } else { + str += QLatin1String("type=any"); + } +#else + str += QLatin1String("type=es1"); +#endif + + int red = value(EGL_RED_SIZE); + int green = value(EGL_GREEN_SIZE); + int blue = value(EGL_BLUE_SIZE); + int alpha = value(EGL_ALPHA_SIZE); + int bufferSize = value(EGL_BUFFER_SIZE); + if (bufferSize == (red + green + blue + alpha)) + bufferSize = 0; + str += QLatin1String(" rgba="); + str += QString::number(red); + str += QLatin1Char(','); + str += QString::number(green); + str += QLatin1Char(','); + str += QString::number(blue); + str += QLatin1Char(','); + str += QString::number(alpha); + if (bufferSize != 0) { + // Only report buffer size if different than r+g+b+a. + str += QLatin1String(" buffer-size="); + str += QString::number(bufferSize); + } + +#ifdef EGL_COLOR_BUFFER_TYPE + val = value(EGL_COLOR_BUFFER_TYPE); + if (val == EGL_LUMINANCE_BUFFER) { + addTag(str, QLatin1String(" color-buffer-type=luminance")); + } else if (val != EGL_DONT_CARE && val != EGL_RGB_BUFFER) { + addTag(str, QLatin1String(" color-buffer-type=")); + str += QString::number(val, 16); + } +#endif + + val = value(EGL_DEPTH_SIZE); + if (val != 0) { + addTag(str, QLatin1String(" depth=")); + str += QString::number(val); + } + + val = value(EGL_STENCIL_SIZE); + if (val != 0) { + addTag(str, QLatin1String(" stencil=")); + str += QString::number(val); + } + + val = value(EGL_SURFACE_TYPE); + if (val != EGL_DONT_CARE) { + addTag(str, QLatin1String(" surface-type=")); + QStringList types; + if ((val & EGL_WINDOW_BIT) != 0) + types += QLatin1String("window"); + if ((val & EGL_PIXMAP_BIT) != 0) + types += QLatin1String("pixmap"); + if ((val & EGL_PBUFFER_BIT) != 0) + types += QLatin1String("pbuffer"); +#ifdef EGL_VG_COLORSPACE_LINEAR_BIT + if ((val & EGL_VG_COLORSPACE_LINEAR_BIT) != 0) + types += QLatin1String("vg-colorspace-linear"); +#endif +#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT + if ((val & EGL_VG_ALPHA_FORMAT_PRE_BIT) != 0) + types += QLatin1String("vg-alpha-format-pre"); +#endif + if ((val & ~(EGL_WINDOW_BIT | EGL_PIXMAP_BIT | EGL_PBUFFER_BIT +#ifdef EGL_VG_COLORSPACE_LINEAR_BIT + | EGL_VG_COLORSPACE_LINEAR_BIT +#endif +#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT + | EGL_VG_ALPHA_FORMAT_PRE_BIT +#endif + )) != 0) { + types += QString::number(val); + } + str += types.join(QLatin1String(",")); + } + + val = value(EGL_CONFIG_CAVEAT); + if (val != EGL_DONT_CARE) { + addTag(str, QLatin1String(" caveat=")); + if (val == EGL_NONE) + str += QLatin1String("none"); + else if (val == EGL_SLOW_CONFIG) + str += QLatin1String("slow"); + else if (val == EGL_NON_CONFORMANT_CONFIG) + str += QLatin1String("non-conformant"); + else + str += QString::number(val, 16); + } + + val = value(EGL_LEVEL); + if (val != 0) { + addTag(str, QLatin1String(" level=")); + str += QString::number(val); + } + + int width, height, pixels; + width = value(EGL_MAX_PBUFFER_WIDTH); + height = value(EGL_MAX_PBUFFER_HEIGHT); + pixels = value(EGL_MAX_PBUFFER_PIXELS); + if (height != EGL_DONT_CARE || width != EGL_DONT_CARE) { + addTag(str, QLatin1String(" max-pbuffer-size=")); + str += QString::number(width); + str += QLatin1Char('x'); + str += QString::number(height); + if (pixels != (width * height)) { + addTag(str, QLatin1String(" max-pbuffer-pixels=")); + str += QString::number(pixels); + } + } + + val = value(EGL_NATIVE_RENDERABLE); + if (val != EGL_DONT_CARE) { + if (val) + addTag(str, QLatin1String(" native-renderable=true")); + else + addTag(str, QLatin1String(" native-renderable=false")); + } + + val = value(EGL_NATIVE_VISUAL_ID); + if (val != EGL_DONT_CARE) { + addTag(str, QLatin1String(" visual-id=")); + str += QString::number(val); + } + + val = value(EGL_NATIVE_VISUAL_TYPE); + if (val != EGL_DONT_CARE) { + addTag(str, QLatin1String(" visual-type=")); + str += QString::number(val); + } + +#ifdef EGL_PRESERVED_RESOURCES + val = value(EGL_PRESERVED_RESOURCES); + if (val != EGL_DONT_CARE) { + if (val) + addTag(str, QLatin1String(" preserved-resources=true")); + else + addTag(str, QLatin1String(" preserved-resources=false")); + } +#endif + + val = value(EGL_SAMPLES); + if (val != 0) { + addTag(str, QLatin1String(" samples=")); + str += QString::number(val); + } + + val = value(EGL_SAMPLE_BUFFERS); + if (val != 0) { + addTag(str, QLatin1String(" sample-buffers=")); + str += QString::number(val); + } + + val = value(EGL_TRANSPARENT_TYPE); + if (val == EGL_TRANSPARENT_RGB) { + addTag(str, QLatin1String(" transparent-rgb=")); + str += QString::number(value(EGL_TRANSPARENT_RED_VALUE)); + str += QLatin1Char(','); + str += QString::number(value(EGL_TRANSPARENT_GREEN_VALUE)); + str += QLatin1Char(','); + str += QString::number(value(EGL_TRANSPARENT_BLUE_VALUE)); + } + +#if defined(EGL_BIND_TO_TEXTURE_RGB) && defined(EGL_BIND_TO_TEXTURE_RGBA) + val = value(EGL_BIND_TO_TEXTURE_RGB); + int val2 = value(EGL_BIND_TO_TEXTURE_RGBA); + if (val != EGL_DONT_CARE || val2 != EGL_DONT_CARE) { + addTag(str, QLatin1String(" bind-texture=")); + if (val == EGL_TRUE) + str += QLatin1String("rgb"); + else + str += QLatin1String("no-rgb"); + if (val2 == EGL_TRUE) + str += QLatin1String(",rgba"); + else + str += QLatin1String(",no-rgba"); + } +#endif + +#ifdef EGL_MIN_SWAP_INTERVAL + val = value(EGL_MIN_SWAP_INTERVAL); + if (val != EGL_DONT_CARE) { + addTag(str, QLatin1String(" min-swap-interval=")); + str += QString::number(val); + } +#endif + +#ifdef EGL_MIN_SWAP_INTERVAL + val = value(EGL_MAX_SWAP_INTERVAL); + if (val != EGL_DONT_CARE) { + addTag(str, QLatin1String(" max-swap-interval=")); + str += QString::number(val); + } +#endif + +#ifdef EGL_LUMINANCE_SIZE + val = value(EGL_LUMINANCE_SIZE); + if (val != 0) { + addTag(str, QLatin1String(" luminance=")); + str += QString::number(val); + } +#endif + +#ifdef EGL_ALPHA_MASK_SIZE + val = value(EGL_ALPHA_MASK_SIZE); + if (val != 0) { + addTag(str, QLatin1String(" alpha-mask=")); + str += QString::number(val); + } +#endif + +#ifdef EGL_CONFORMANT + val = value(EGL_CONFORMANT); + if (val != 0) { + if (val) + addTag(str, QLatin1String(" conformant=true")); + else + addTag(str, QLatin1String(" conformant=false")); + } +#endif + + return str; +} + +QT_END_NAMESPACE + + |