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-rw-r--r--src/gui/opengl/qopenglgradientcache.cpp276
1 files changed, 0 insertions, 276 deletions
diff --git a/src/gui/opengl/qopenglgradientcache.cpp b/src/gui/opengl/qopenglgradientcache.cpp
deleted file mode 100644
index 3aa4c0d2e6..0000000000
--- a/src/gui/opengl/qopenglgradientcache.cpp
+++ /dev/null
@@ -1,276 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtGui 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 "qopenglgradientcache_p.h"
-#include <private/qdrawhelper_p.h>
-#include <private/qopenglcontext_p.h>
-#include <private/qrgba64_p.h>
-#include <QtCore/qmutex.h>
-#include <QtCore/qrandom.h>
-#include "qopenglfunctions.h"
-#include "qopenglextensions_p.h"
-
-#ifndef GL_RGBA16
-#define GL_RGBA16 0x805B
-#endif
-
-QT_BEGIN_NAMESPACE
-
-class QOpenGL2GradientCacheWrapper
-{
-public:
- QOpenGL2GradientCache *cacheForContext(QOpenGLContext *context) {
- QMutexLocker lock(&m_mutex);
- return m_resource.value<QOpenGL2GradientCache>(context);
- }
-
-private:
- QOpenGLMultiGroupSharedResource m_resource;
- QMutex m_mutex;
-};
-
-Q_GLOBAL_STATIC(QOpenGL2GradientCacheWrapper, qt_gradient_caches)
-
-QOpenGL2GradientCache::QOpenGL2GradientCache(QOpenGLContext *ctx)
- : QOpenGLSharedResource(ctx->shareGroup())
-{
-}
-
-QOpenGL2GradientCache::~QOpenGL2GradientCache()
-{
- cache.clear();
-}
-
-QOpenGL2GradientCache *QOpenGL2GradientCache::cacheForContext(QOpenGLContext *context)
-{
- return qt_gradient_caches()->cacheForContext(context);
-}
-
-void QOpenGL2GradientCache::invalidateResource()
-{
- QMutexLocker lock(&m_mutex);
- cache.clear();
-}
-
-void QOpenGL2GradientCache::freeResource(QOpenGLContext *)
-{
- cleanCache();
-}
-
-void QOpenGL2GradientCache::cleanCache()
-{
- QMutexLocker lock(&m_mutex);
- QOpenGLGradientColorTableHash::const_iterator it = cache.constBegin();
- QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
- for (; it != cache.constEnd(); ++it) {
- const CacheInfo &cache_info = it.value();
- funcs->glDeleteTextures(1, &cache_info.texId);
- }
- cache.clear();
-}
-
-GLuint QOpenGL2GradientCache::getBuffer(const QGradient &gradient, qreal opacity)
-{
- quint64 hash_val = 0;
-
- const QGradientStops stops = gradient.stops();
- for (int i = 0; i < stops.size() && i <= 2; i++)
- hash_val += stops[i].second.rgba();
-
- const QMutexLocker lock(&m_mutex);
- QOpenGLGradientColorTableHash::const_iterator it = cache.constFind(hash_val);
-
- if (it == cache.constEnd())
- return addCacheElement(hash_val, gradient, opacity);
- else {
- do {
- const CacheInfo &cache_info = it.value();
- if (cache_info.stops == stops && cache_info.opacity == opacity
- && cache_info.interpolationMode == gradient.interpolationMode())
- {
- return cache_info.texId;
- }
- ++it;
- } while (it != cache.constEnd() && it.key() == hash_val);
- // an exact match for these stops and opacity was not found, create new cache
- return addCacheElement(hash_val, gradient, opacity);
- }
-}
-
-
-GLuint QOpenGL2GradientCache::addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity)
-{
- QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
- if (cache.size() == maxCacheSize()) {
- int elem_to_remove = QRandomGenerator::global()->bounded(maxCacheSize());
- quint64 key = cache.keys()[elem_to_remove];
-
- // need to call glDeleteTextures on each removed cache entry:
- QOpenGLGradientColorTableHash::const_iterator it = cache.constFind(key);
- do {
- funcs->glDeleteTextures(1, &it.value().texId);
- } while (++it != cache.constEnd() && it.key() == key);
- cache.remove(key); // may remove more than 1, but OK
- }
-
- CacheInfo cache_entry(gradient.stops(), opacity, gradient.interpolationMode());
- funcs->glGenTextures(1, &cache_entry.texId);
- funcs->glBindTexture(GL_TEXTURE_2D, cache_entry.texId);
- if (static_cast<QOpenGLExtensions *>(funcs)->hasOpenGLExtension(QOpenGLExtensions::Sized16Formats)) {
- QRgba64 buffer[1024];
- generateGradientColorTable(gradient, buffer, paletteSize(), opacity);
- funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16, paletteSize(), 1,
- 0, GL_RGBA, GL_UNSIGNED_SHORT, buffer);
- } else {
- uint buffer[1024];
- generateGradientColorTable(gradient, buffer, paletteSize(), opacity);
- funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, paletteSize(), 1,
- 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
- }
- return cache.insert(hash_val, cache_entry).value().texId;
-}
-
-
-//TODO: Let GL generate the texture using an FBO
-void QOpenGL2GradientCache::generateGradientColorTable(const QGradient& gradient, QRgba64 *colorTable, int size, qreal opacity) const
-{
- int pos = 0;
- const QGradientStops s = gradient.stops();
-
- bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation);
-
- uint alpha = qRound(opacity * 256);
- QRgba64 current_color = combineAlpha256(s[0].second.rgba64(), alpha);
- qreal incr = 1.0 / qreal(size);
- qreal fpos = 1.5 * incr;
- colorTable[pos++] = qPremultiply(current_color);
-
- while (fpos <= s.first().first) {
- colorTable[pos] = colorTable[pos - 1];
- pos++;
- fpos += incr;
- }
-
- if (colorInterpolation)
- current_color = qPremultiply(current_color);
-
- const int sLast = s.size() - 1;
- for (int i = 0; i < sLast; ++i) {
- qreal delta = 1/(s[i+1].first - s[i].first);
- QRgba64 next_color = combineAlpha256(s[i + 1].second.rgba64(), alpha);
- if (colorInterpolation)
- next_color = qPremultiply(next_color);
-
- while (fpos < s[i+1].first && pos < size) {
- int dist = int(256 * ((fpos - s[i].first) * delta));
- int idist = 256 - dist;
- if (colorInterpolation)
- colorTable[pos] = interpolate256(current_color, idist, next_color, dist);
- else
- colorTable[pos] = qPremultiply(interpolate256(current_color, idist, next_color, dist));
- ++pos;
- fpos += incr;
- }
- current_color = next_color;
- }
-
- Q_ASSERT(s.size() > 0);
-
- QRgba64 last_color = qPremultiply(combineAlpha256(s[sLast].second.rgba64(), alpha));
- for (;pos < size; ++pos)
- colorTable[pos] = last_color;
-
- // Make sure the last color stop is represented at the end of the table
- colorTable[size-1] = last_color;
-}
-
-void QOpenGL2GradientCache::generateGradientColorTable(const QGradient& gradient, uint *colorTable, int size, qreal opacity) const
-{
- int pos = 0;
- const QGradientStops s = gradient.stops();
-
- bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation);
-
- uint alpha = qRound(opacity * 256);
- // Qt LIES! It returns ARGB (on little-endian AND on big-endian)
- uint current_color = ARGB_COMBINE_ALPHA(s[0].second.rgba(), alpha);
- qreal incr = 1.0 / qreal(size);
- qreal fpos = 1.5 * incr;
- colorTable[pos++] = ARGB2RGBA(qPremultiply(current_color));
-
- while (fpos <= s.first().first) {
- colorTable[pos] = colorTable[pos - 1];
- pos++;
- fpos += incr;
- }
-
- if (colorInterpolation)
- current_color = qPremultiply(current_color);
-
- const int sLast = s.size() - 1;
- for (int i = 0; i < sLast; ++i) {
- qreal delta = 1/(s[i+1].first - s[i].first);
- uint next_color = ARGB_COMBINE_ALPHA(s[i + 1].second.rgba(), alpha);
- if (colorInterpolation)
- next_color = qPremultiply(next_color);
-
- while (fpos < s[i+1].first && pos < size) {
- int dist = int(256 * ((fpos - s[i].first) * delta));
- int idist = 256 - dist;
- if (colorInterpolation)
- colorTable[pos] = ARGB2RGBA(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist));
- else
- colorTable[pos] = ARGB2RGBA(qPremultiply(INTERPOLATE_PIXEL_256(current_color, idist, next_color, dist)));
- ++pos;
- fpos += incr;
- }
- current_color = next_color;
- }
-
- Q_ASSERT(s.size() > 0);
-
- uint last_color = ARGB2RGBA(qPremultiply(ARGB_COMBINE_ALPHA(s[sLast].second.rgba(), alpha)));
- for (;pos < size; ++pos)
- colorTable[pos] = last_color;
-
- // Make sure the last color stop is represented at the end of the table
- colorTable[size-1] = last_color;
-}
-
-QT_END_NAMESPACE
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