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Diffstat (limited to 'src/core/render/backend/quniformvalue.cpp')
| -rw-r--r-- | src/core/render/backend/quniformvalue.cpp | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/src/core/render/backend/quniformvalue.cpp b/src/core/render/backend/quniformvalue.cpp new file mode 100644 index 000000000..8c88b62a6 --- /dev/null +++ b/src/core/render/backend/quniformvalue.cpp @@ -0,0 +1,306 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt3D 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "quniformvalue.h" + +#include "qgraphicscontext.h" +#include "rendertexture.h" + +#include <QOpenGLShaderProgram> +#include <QDebug> +#include <QColor> +#include <QQuaternion> + +namespace Qt3D { namespace Render { + +QUniformValue::QUniformValue() : + m_type(Invalid), + m_count(-1), + m_tupleSize(0) +{ +} + +QUniformValue::QUniformValue(Type type, QVariant value) : + m_type(type), + m_count(-1), + m_tupleSize(0) +{ + fromVariant(value); + Q_ASSERT((m_tupleSize >= 1) && (m_tupleSize <= 4)); +} + +QUniformValue::QUniformValue(const QVector4D &f) : + m_type(Float) +{ + m_var = QVariant(f); + QVector4D v(f); // need to make a local copy to take the address + setRawFromFloats(&v[0], 1, 4); +} + +void QUniformValue::fromVariant(QVariant v) +{ + if (!v.isValid()) + return; + + if (m_var == v) + return; + m_var = v; + + switch (m_type) { + case Int: + case UInt: + fromVariantToInt(v); + break; + + case Float: + fromVariantToFloat(v); + break; + + // doubles, if the extension is present + + default: + qWarning() << Q_FUNC_INFO << "unsupported internal type" << m_type; + } +} + +void QUniformValue::fromVariantToInt(QVariant v) +{ + switch (v.type()) { + case QVariant::Int: + case QVariant::UInt: + case QVariant::Double: { + qint32 i = static_cast<qint32>(v.toInt()); + setRawFromInts(&i, 1, 1); + break; + } + + default: + qWarning() << Q_FUNC_INFO << "unsupported type" << v; + } +} + +void QUniformValue::fromVariantToFloat(QVariant v) +{ + float* bufPtr = NULL; + + switch (v.type()) { + case QVariant::Int: + case QVariant::UInt: + case QVariant::Double: { + float f = static_cast<float>(v.toDouble()); + setRawFromFloats(&f, 1, 1); + break; + } + + case QVariant::Vector2D: { + QVector2D v2 = v.value<QVector2D>(); + setRawFromFloats(&v2[0], 1, 2); + break; + } + + case QVariant::Vector3D: { + QVector3D v3 = v.value<QVector3D>(); + setRawFromFloats(&v3[0], 1, 3); + break; + } + + case QVariant::Vector4D: { + QVector4D v4 = v.value<QVector4D>(); + setRawFromFloats(&v4[0], 1, 4); + break; + } + + case QVariant::Matrix4x4: { + QMatrix4x4 m = v.value<QMatrix4x4>(); + setRawFromFloats(m.constData(), 4, 4); + break; + } + + case QVariant::Color: { + qDebug() << "XXXXXXX setting from" << v; + m_bytes.resize(sizeof(float) * 4); + m_count = 1; + m_tupleSize = 4; + QColor c = v.value<QColor>(); + *bufPtr++ = c.redF(); + *bufPtr++ = c.greenF(); + *bufPtr++ = c.blueF(); + *bufPtr++ = c.alphaF(); + break; + } + + case QVariant::Quaternion: { + QVector4D qv = v.value<QQuaternion>().toVector4D(); + setRawFromFloats(&qv[0], 1, 4); + break; + } + + case QVariant::List: { + QVariantList vl = v.toList(); + + // implement me ... + + break; + } + + default: + qWarning() << Q_FUNC_INFO << "unsupported QVariant type"; + } +} + +void QUniformValue::setRawFromFloats(const float* ptr, unsigned int count, unsigned int tupleSize) +{ + m_bytes.resize(sizeof(float) * count * tupleSize); + memcpy(m_bytes.data(), ptr, m_bytes.size()); + m_count = count; + m_tupleSize = tupleSize; +} + +void QUniformValue::setRawFromInts(const qint32* ptr, unsigned int count, unsigned int tupleSize) +{ + m_bytes.resize(sizeof(qint32) * count * tupleSize); + memcpy(m_bytes.data(), ptr, m_bytes.size()); + m_count = count; + m_tupleSize = tupleSize; +} + +void QUniformValue::apply(QGraphicsContext *gc, int location, QString nm) const +{ + switch (m_type) { +#if 0 + case Int: + switch (m_tupleSize) { + + } + + gc->activeShader()->setUniformValueArray(location, + reinterpret_cast<const GLint*>(m_bytes.constData()), + m_count * m_tupleSize); + glUni + + break; + + case UInt: + gc->activeShader()->setUniformValueArray(location, + reinterpret_cast<const GLuint*>(m_bytes.constData()), + m_count * m_tupleSize); + break; +#endif + + case Float: + gc->activeShader()->setUniformValueArray(location, + reinterpret_cast<const GLfloat*>(m_bytes.constData()), + m_count, m_tupleSize); + break; + + default: + qWarning() << Q_FUNC_INFO << "unsupported type:" << m_type; + } + + int err = glGetError(); + if (err) { + qWarning() << "error after setting uniform" << m_count << location << m_tupleSize << nm; + } +} + +void QUniformValue::convertToBytes() const +{ + if (!m_bytes.isEmpty()) + return; // use cahced conversion +} + +void QUniformPack::setUniform(QString glslName, QUniformValue val) +{ + for (int u=0; u<m_uniforms.size(); ++u) { + if (m_uniforms[u].glslName != glslName) { + continue; + } + + m_uniforms[u].uval = val; + return; + } + + NamedUniform nu; + nu.glslName = glslName; + nu.uval = val; + m_uniforms.append(nu); +} + +void QUniformPack::setTexture(QString glslName, RenderTexturePtr tex) +{ + for (int t=0; t<m_textures.size(); ++t) { + if (m_textures[t].glslName != glslName) { + continue; + } + + m_textures[t].tex = tex; + return; + } + + m_textures.append(NamedTexture(glslName, tex)); +} + +void QUniformPack::apply(QGraphicsContext *gc) +{ + for (int u=0; u<m_uniforms.size(); ++u) { + int loc = m_uniforms[u].location; + if (loc == -1) { + loc = gc->activeShader()->uniformLocation(m_uniforms[u].glslName); + m_uniforms[u].location = loc; + } + + m_uniforms[u].uval.apply(gc, loc, m_uniforms[u].glslName); + } // of uniforms iteration + + for (int t=0; t<m_textures.size(); ++t) { + int loc = m_textures[t].location; + if (loc == -1) { + loc = gc->activeShader()->uniformLocation(m_textures[t].glslName); + m_textures[t].location = loc; + } + + int unit = gc->activateTexture(TextureScopeMaterial, m_textures[t].tex.data()); + gc->activeShader()->setUniformValue(loc, unit); + } // of textures iteration +} + +} } // of namespace Qt3D::Render + |