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// Copyright (C) 2008-2012 NVIDIA Corporation.
// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qssgrendershaderlibrarymanager_p.h"
#include "../qssgrendercontextcore.h"
#include <QtQuick3DRuntimeRender/private/qssgrenderloadedtexture_p.h>
#include <QXmlStreamReader>
#include <QFileInfo>
#include <QCryptographicHash>
#include <QtQuick3DRuntimeRender/private/qssgruntimerenderlogging_p.h>
QT_BEGIN_NAMESPACE
QString QSSGShaderLibraryManager::getShaderCodeLibraryDirectory()
{
return QStringLiteral("res/effectlib");
}
static QByteArray includeSearch() { return QByteArrayLiteral("#include \""); };
static QByteArray copyrightHeaderStart() { return QByteArrayLiteral("/****************************************************************************"); }
static QByteArray copyrightHeaderEnd() { return QByteArrayLiteral("****************************************************************************/"); }
QSSGShaderLibraryManager::QSSGShaderLibraryManager() {}
QSSGShaderLibraryManager::~QSSGShaderLibraryManager() {}
static inline char stageKey(QSSGShaderCache::ShaderType type)
{
switch (type) {
case QSSGShaderCache::ShaderType::Vertex:
return 'V';
case QSSGShaderCache::ShaderType::Fragment:
return 'F';
default:
break;
}
return '?';
}
void QSSGShaderLibraryManager::setShaderSource(const QByteArray &inShaderPathKey, QSSGShaderCache::ShaderType type,
const QByteArray &inSource, const QSSGCustomShaderMetaData &meta)
{
QWriteLocker locker(&m_lock);
const QByteArray perStageKey = stageKey(type) + inShaderPathKey;
{
auto it = m_expandedFiles.find(perStageKey);
if (it != m_expandedFiles.end())
it.value() = inSource;
else
m_expandedFiles.insert(perStageKey, inSource);
}
{
auto it = m_metadata.find(perStageKey);
if (it != m_metadata.end())
it.value() = meta;
else
m_metadata.insert(perStageKey, meta);
}
}
void QSSGShaderLibraryManager::resolveIncludeFiles(QByteArray &theReadBuffer, const QByteArray &inMaterialInfoString)
{
// Now do search and replace for the headers
for (int thePos = theReadBuffer.indexOf(includeSearch()); thePos != -1;
thePos = theReadBuffer.indexOf(includeSearch(), thePos + 1)) {
int theEndQuote = theReadBuffer.indexOf('\"', thePos + includeSearch().size() + 1);
// Indicates an unterminated include file.
if (theEndQuote == -1) {
qCCritical(INVALID_OPERATION, "Unterminated include in file: %s", inMaterialInfoString.constData());
theReadBuffer.clear();
break;
}
const int theActualBegin = thePos + includeSearch().size();
const auto &theInclude = theReadBuffer.mid(theActualBegin, theEndQuote - theActualBegin);
// If we haven't included the file yet this round
auto contents = getIncludeContents(theInclude);
// Strip copywrite headers from include if present
if (contents.startsWith(copyrightHeaderStart())) {
int clipPos = contents.indexOf(copyrightHeaderEnd()) ;
if (clipPos >= 0)
contents.remove(0, clipPos + copyrightHeaderEnd().size());
}
// Write insert comment for begin source
contents.prepend(QByteArrayLiteral("\n// begin \"") + theInclude + QByteArrayLiteral("\"\n"));
// Write insert comment for end source
contents.append(QByteArrayLiteral("\n// end \"" ) + theInclude + QByteArrayLiteral("\"\n"));
theReadBuffer = theReadBuffer.replace(thePos, (theEndQuote + 1) - thePos, contents);
}
}
QByteArray QSSGShaderLibraryManager::getIncludeContents(const QByteArray &inShaderPathKey)
{
QWriteLocker locker(&m_lock);
auto theInsert = m_expandedFiles.constFind(inShaderPathKey);
const bool found = (theInsert != m_expandedFiles.cend());
QByteArray theReadBuffer;
if (!found) {
const QString defaultDir = getShaderCodeLibraryDirectory();
const auto ver = QByteArrayLiteral("rhi");
QString fullPath;
QSharedPointer<QIODevice> theStream;
QTextStream stream(&fullPath);
stream << defaultDir << QLatin1Char('/') << ver << QLatin1Char('/') << QString::fromLocal8Bit(inShaderPathKey);
theStream = QSSGInputUtil::getStreamForFile(fullPath, true);
if (theStream.isNull()) {
fullPath.clear();
QTextStream stream(&fullPath);
stream << defaultDir << QLatin1Char('/') << QString::fromLocal8Bit(inShaderPathKey);
theStream = QSSGInputUtil::getStreamForFile(fullPath, false);
}
if (!theStream.isNull()) {
char readBuf[1024];
qint64 amountRead = 0;
do {
amountRead = theStream->read(readBuf, 1024);
if (amountRead)
theReadBuffer.append(readBuf, int(amountRead));
} while (amountRead);
} else {
qCCritical(INVALID_OPERATION, "Failed to find include file %s", qPrintable(QString::fromLocal8Bit(inShaderPathKey)));
Q_ASSERT(false);
}
theInsert = m_expandedFiles.insert(inShaderPathKey, theReadBuffer);
} else {
theReadBuffer = theInsert.value();
}
locker.unlock();
resolveIncludeFiles(theReadBuffer, inShaderPathKey);
return theReadBuffer;
}
QByteArray QSSGShaderLibraryManager::getShaderSource(const QByteArray &inShaderPathKey, QSSGShaderCache::ShaderType type)
{
QReadLocker locker(&m_lock);
const QByteArray perStageKey = stageKey(type) + inShaderPathKey;
auto it = m_expandedFiles.constFind(perStageKey);
if (it != m_expandedFiles.cend())
return it.value();
qWarning("No shader source stored for key %s", perStageKey.constData());
return QByteArray();
}
QSSGCustomShaderMetaData QSSGShaderLibraryManager::getShaderMetaData(const QByteArray &inShaderPathKey, QSSGShaderCache::ShaderType type)
{
QReadLocker locker(&m_lock);
const QByteArray perStageKey = stageKey(type) + inShaderPathKey;
auto it = m_metadata.constFind(perStageKey);
if (it != m_metadata.cend())
return it.value();
qWarning("No shader metadata stored for key %s", perStageKey.constData());
return {};
}
void QSSGShaderLibraryManager::loadPregeneratedShaderInfo()
{
const auto collectionFilePath = QString::fromLatin1(QSSGShaderCache::resourceFolder() + QSSGShaderCache::shaderCollectionFile());
QFile file(collectionFilePath);
if (file.exists()) {
QQsbIODeviceCollection qsbc(file);
if (qsbc.map(QQsbIODeviceCollection::Read))
m_preGeneratedShaderEntries = qsbc.availableEntries();
qsbc.unmap();
}
}
static int calcLightPoint(const QSSGShaderDefaultMaterialKey &key, int i) {
QSSGShaderDefaultMaterialKeyProperties prop;
return prop.m_lightFlags[i].getValue(key) + prop.m_lightSpotFlags[i].getValue(key) * 2
+ prop.m_lightAreaFlags[i].getValue(key) * 4 + prop.m_lightShadowFlags[i].getValue(key) * 8;
};
bool QSSGShaderLibraryManager::compare(const QSSGShaderDefaultMaterialKey &key1, const QSSGShaderDefaultMaterialKey &key2)
{
QSSGShaderDefaultMaterialKeyProperties props;
#define COMPARE_PROP(x) \
if (props.x.getValue(key1) < props.x.getValue(key2)) return true;
COMPARE_PROP(m_hasLighting)
COMPARE_PROP(m_hasIbl)
COMPARE_PROP(m_specularEnabled)
COMPARE_PROP(m_fresnelEnabled)
COMPARE_PROP(m_fresnelScaleBiasEnabled)
COMPARE_PROP(m_clearcoatFresnelScaleBiasEnabled)
COMPARE_PROP(m_baseColorSingleChannelEnabled)
COMPARE_PROP(m_specularSingleChannelEnabled)
COMPARE_PROP(m_emissiveSingleChannelEnabled)
COMPARE_PROP(m_invertOpacityMapValue)
COMPARE_PROP(m_vertexColorsEnabled)
COMPARE_PROP(m_vertexColorsMaskEnabled)
COMPARE_PROP(m_vertexColorRedMask)
COMPARE_PROP(m_vertexColorGreenMask)
COMPARE_PROP(m_vertexColorBlueMask)
COMPARE_PROP(m_vertexColorAlphaMask)
COMPARE_PROP(m_specularModel)
COMPARE_PROP(m_vertexAttributes)
COMPARE_PROP(m_alphaMode)
for (int i = 0; i < QSSGShaderDefaultMaterialKeyProperties::ImageMapCount; i++) {
COMPARE_PROP(m_imageMaps[i])
}
for (int i = 0; i < QSSGShaderDefaultMaterialKeyProperties::SingleChannelImageCount; i++) {
COMPARE_PROP(m_textureChannels[i])
}
COMPARE_PROP(m_lightCount)
for (int i = 0; i < QSSGShaderDefaultMaterialKeyProperties::LightCount; i++) {
int lp1 = calcLightPoint(key1, i);
int lp2 = calcLightPoint(key2, i);
if (lp1 < lp2)
return true;
}
#undef COMPARE_PROP
return false;
}
QT_END_NAMESPACE
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