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/*
materialshadermodel.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2017 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "materialshadermodel.h"
#include <core/metaenum.h>
#include <QFile>
#include <QSGMaterial>
#include <private/qsgmaterialshader_p.h>
using namespace GammaRay;
#if QT_VERSION <= QT_VERSION_CHECK(6, 0, 0)
#define S(x) \
{ \
QOpenGLShader::x, #x \
}
static const MetaEnum::Value<QOpenGLShader::ShaderTypeBit> qopengl_shader_type[] = {
S(Vertex),
S(Fragment),
S(Geometry),
S(TessellationControl),
S(TessellationEvaluation),
S(Compute)
};
#undef S
class SGMaterialShaderThief : public QSGMaterialShader
{
public:
using QSGMaterialShader::fragmentShader;
using QSGMaterialShader::vertexShader;
const QHash<QOpenGLShader::ShaderType, QStringList> &getShaderSources()
{
return d_func()->m_sourceFiles;
}
};
#endif // QT_VERSION <= QT_VERSION_CHECK(6, 0, 0)
MaterialShaderModel::MaterialShaderModel(QObject *parent)
: QAbstractListModel(parent)
, m_shader(nullptr)
, m_shaderFileCount(0)
{
}
MaterialShaderModel::~MaterialShaderModel() = default;
void MaterialShaderModel::setMaterialShader(QSGMaterialShader *shader)
{
if (m_shader) {
beginRemoveRows(QModelIndex(), 0, rowCount() - 1);
m_shader = nullptr;
endRemoveRows();
}
if (shader) {
m_shaderFileCount = shaderFileCount(shader);
beginInsertRows(QModelIndex(), 0, m_shaderFileCount == 0 ? 1 : m_shaderFileCount - 1);
m_shader = shader;
endInsertRows();
}
}
QByteArray MaterialShaderModel::shaderForRow(int row) const
{
if (row < 0 || row >= rowCount() || !m_shader)
return QByteArray();
if (m_shaderFileCount == 0) {
switch (row) {
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
case 0:
return reinterpret_cast<SGMaterialShaderThief *>(m_shader)->vertexShader();
case 1:
return reinterpret_cast<SGMaterialShaderThief *>(m_shader)->fragmentShader();
#endif
}
return QByteArray();
}
const auto fileName = shaderFileForRow(row);
QFile shaderFile(fileName);
if (!shaderFile.open(QIODevice::ReadOnly | QIODevice::Text))
return QByteArray();
return shaderFile.readAll();
}
int MaterialShaderModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid() || !m_shader)
return 0;
return m_shaderFileCount == 0 ? 2 : m_shaderFileCount;
}
QVariant MaterialShaderModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || !m_shader || role != Qt::DisplayRole)
return QVariant();
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
if (QSGMaterialShaderPrivate *p = QSGMaterialShaderPrivate::get(m_shader)) {
int i = 0;
const auto &shaderFiles = p->shaderFileNames;
for (auto it = shaderFiles.cbegin(); it != shaderFiles.cend(); ++it) {
auto type = it.key();
if (i == index.row()) {
switch (type) {
case QShader::VertexStage:
return QString::fromLatin1("Vertex");
case QShader::TessellationControlStage:
return QString::fromLatin1("TessellationControlStage");
case QShader::TessellationEvaluationStage:
return QString::fromLatin1("TessellationEvaluationStage");
case QShader::GeometryStage:
return QString::fromLatin1("GeometryStage");
case QShader::FragmentStage:
return QString::fromLatin1("FragmentStage");
case QShader::ComputeStage:
return QString::fromLatin1("ComputeStage");
}
}
i++;
}
}
#else
if (m_shaderFileCount > 0) {
const auto &files = reinterpret_cast<SGMaterialShaderThief *>(m_shader)->getShaderSources();
int idx = index.row();
for (auto it = files.begin(); it != files.end(); ++it) {
if (idx < it.value().size())
return QString(MetaEnum::flagsToString(it.key(), qopengl_shader_type) + QLatin1String(": ") + it.value().at(idx));
idx -= it.value().size();
}
Q_ASSERT(false);
} else {
return MetaEnum::flagsToString((1 << index.row()), qopengl_shader_type);
}
#endif
return QVariant();
}
int MaterialShaderModel::shaderFileCount(QSGMaterialShader *shader)
{
Q_ASSERT(shader);
int fileCount = 0;
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
if (QSGMaterialShaderPrivate *p = QSGMaterialShaderPrivate::get(shader)) {
return p->shaderFileNames.size();
}
#else
const auto &files = reinterpret_cast<SGMaterialShaderThief *>(shader)->getShaderSources();
for (auto it = files.begin(); it != files.end(); ++it)
fileCount += it.value().size();
#endif
return fileCount;
}
QString MaterialShaderModel::shaderFileForRow(int row) const
{
Q_ASSERT(m_shader);
Q_ASSERT(m_shaderFileCount > 0);
Q_ASSERT(row < m_shaderFileCount);
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
if (QSGMaterialShaderPrivate *p = QSGMaterialShaderPrivate::get(m_shader)) {
const auto &shaderFiles = p->shaderFileNames;
int i = 0;
for (const auto &sf : shaderFiles) {
if (i == row)
return sf;
i++;
}
return {};
}
#else
const auto &files = reinterpret_cast<SGMaterialShaderThief *>(m_shader)->getShaderSources();
for (auto it = files.begin(); it != files.end(); ++it) {
if (row < it.value().size())
return it.value().at(row);
row -= it.value().size();
}
#endif
Q_ASSERT(false);
return QString();
}
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