diff options
Diffstat (limited to 'src/quick/scenegraph/compressedtexture/qsgcompressedtexture.cpp')
| -rw-r--r-- | src/quick/scenegraph/compressedtexture/qsgcompressedtexture.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/quick/scenegraph/compressedtexture/qsgcompressedtexture.cpp b/src/quick/scenegraph/compressedtexture/qsgcompressedtexture.cpp new file mode 100644 index 0000000000..839c562989 --- /dev/null +++ b/src/quick/scenegraph/compressedtexture/qsgcompressedtexture.cpp @@ -0,0 +1,246 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 https://www.qt.io/terms-conditions. For further +** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +#include "qsgcompressedtexture_p.h" +#include <QOpenGLContext> +#include <QOpenGLTexture> +#include <QOpenGLFunctions> +#include <QDebug> +#include <QtQuick/private/qquickwindow_p.h> + +QT_BEGIN_NAMESPACE + +Q_LOGGING_CATEGORY(QSG_LOG_TEXTUREIO, "qt.scenegraph.textureio"); + +bool QSGCompressedTextureData::isValid() const +{ + if (data.isNull() || size.isEmpty() || !format) + return false; + if (dataLength < 0 || dataOffset < 0 || dataOffset >= data.length()) + return false; + if (dataLength > 0 && qint64(dataOffset) + qint64(dataLength) > qint64(data.length())) + return false; + + return true; +} + +int QSGCompressedTextureData::sizeInBytes() const +{ + if (!isValid()) + return 0; + return dataLength > 0 ? dataLength : data.length() - dataOffset; +} + +Q_QUICK_PRIVATE_EXPORT QDebug operator<<(QDebug dbg, const QSGCompressedTextureData *d) +{ + QDebugStateSaver saver(dbg); + + dbg.nospace() << "QSGCompressedTextureData("; + if (d) { + dbg << d->logName << ' '; + dbg << static_cast<QOpenGLTexture::TextureFormat>(d->format) + << "[0x" << hex << d->format << dec << "]"; + dbg.space() << (d->hasAlpha ? "with" : "no") << "alpha" << d->size + << "databuffer" << d->data.size() << "offset" << d->dataOffset << "length"; + dbg.nospace() << d->dataLength << ")"; + } else { + dbg << "null)"; + } + return dbg; +} + +QSGCompressedTexture::QSGCompressedTexture(const DataPtr& texData) + : m_textureData(texData) +{ + if (m_textureData) { + m_size = m_textureData->size; + m_hasAlpha = m_textureData->hasAlpha; + } +} + +QSGCompressedTexture::~QSGCompressedTexture() +{ +#if QT_CONFIG(opengl) + if (m_textureId) { + QOpenGLContext *ctx = QOpenGLContext::currentContext(); + QOpenGLFunctions *funcs = ctx ? ctx->functions() : nullptr; + if (!funcs) + return; + + funcs->glDeleteTextures(1, &m_textureId); + } +#endif +} + +int QSGCompressedTexture::textureId() const +{ +#if QT_CONFIG(opengl) + if (!m_textureId) { + QOpenGLContext *ctx = QOpenGLContext::currentContext(); + QOpenGLFunctions *funcs = ctx ? ctx->functions() : nullptr; + if (!funcs) + return 0; + + funcs->glGenTextures(1, &m_textureId); + } +#endif + return m_textureId; +} + +QSize QSGCompressedTexture::textureSize() const +{ + return m_size; +} + +bool QSGCompressedTexture::hasAlphaChannel() const +{ + return m_hasAlpha; +} + +bool QSGCompressedTexture::hasMipmaps() const +{ + return false; +} + +void QSGCompressedTexture::bind() +{ +#if QT_CONFIG(opengl) + QOpenGLContext *ctx = QOpenGLContext::currentContext(); + QOpenGLFunctions *funcs = ctx ? ctx->functions() : nullptr; + if (!funcs) + return; + + if (!textureId()) + return; + + funcs->glBindTexture(GL_TEXTURE_2D, m_textureId); + + if (m_uploaded) + return; + + QByteArray logName(m_textureData ? m_textureData->logName : QByteArrayLiteral("(unset)")); + + if (!m_textureData || !m_textureData->isValid()) { + qCDebug(QSG_LOG_TEXTUREIO, "Invalid texture data for %s", logName.constData()); + funcs->glBindTexture(GL_TEXTURE_2D, 0); + return; + } + + if (Q_UNLIKELY(QSG_LOG_TEXTUREIO().isDebugEnabled())) { + qCDebug(QSG_LOG_TEXTUREIO) << "Uploading texture" << m_textureData.data(); + while (funcs->glGetError() != GL_NO_ERROR); + } + + funcs->glCompressedTexImage2D(GL_TEXTURE_2D, 0, m_textureData->format, + m_size.width(), m_size.height(), 0, m_textureData->sizeInBytes(), + m_textureData->data.constData() + m_textureData->dataOffset); + + if (Q_UNLIKELY(QSG_LOG_TEXTUREIO().isDebugEnabled())) { + GLuint error = funcs->glGetError(); + if (error != GL_NO_ERROR) { + qCDebug(QSG_LOG_TEXTUREIO, "glCompressedTexImage2D failed for %s, error 0x%x", logName.constData(), error); + } + } + + m_textureData.clear(); // Release this memory, not needed anymore + + updateBindOptions(true); + m_uploaded = true; +#endif // QT_CONFIG(opengl) +} + +bool QSGCompressedTexture::formatIsOpaque(quint32 glTextureFormat) +{ + switch (glTextureFormat) { + case QOpenGLTexture::RGB_DXT1: + case QOpenGLTexture::R_ATI1N_UNorm: + case QOpenGLTexture::R_ATI1N_SNorm: + case QOpenGLTexture::RG_ATI2N_UNorm: + case QOpenGLTexture::RG_ATI2N_SNorm: + case QOpenGLTexture::RGB_BP_UNSIGNED_FLOAT: + case QOpenGLTexture::RGB_BP_SIGNED_FLOAT: + case QOpenGLTexture::R11_EAC_UNorm: + case QOpenGLTexture::R11_EAC_SNorm: + case QOpenGLTexture::RG11_EAC_UNorm: + case QOpenGLTexture::RG11_EAC_SNorm: + case QOpenGLTexture::RGB8_ETC2: + case QOpenGLTexture::SRGB8_ETC2: + case QOpenGLTexture::RGB8_ETC1: + case QOpenGLTexture::SRGB_DXT1: + return true; + break; + default: + return false; + } +} + +QSGCompressedTextureFactory::QSGCompressedTextureFactory(const QSGCompressedTexture::DataPtr &texData) + : m_textureData(texData) +{ +} + +QSGTexture *QSGCompressedTextureFactory::createTexture(QQuickWindow *window) const +{ + if (!m_textureData || !m_textureData->isValid()) + return nullptr; + + // attempt to atlas the texture + QSGRenderContext *context = QQuickWindowPrivate::get(window)->context; + QSGTexture *t = context->compressedTextureForFactory(this); + if (t) + return t; + + return new QSGCompressedTexture(m_textureData); +} + +int QSGCompressedTextureFactory::textureByteCount() const +{ + return m_textureData ? m_textureData->sizeInBytes() : 0; +} + + +QSize QSGCompressedTextureFactory::textureSize() const +{ + if (m_textureData && m_textureData->isValid()) + return m_textureData->size; + return QSize(); +} + +QT_END_NAMESPACE |