| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qopenglcustomshaderstage_p.h" |
| 5 | #include "qopenglengineshadermanager_p.h" |
| 6 | #include "qopenglpaintengine_p.h" |
| 7 | #include <private/qpainter_p.h> |
| 8 | |
| 9 | #include <QtCore/qpointer.h> |
| 10 | |
| 11 | QT_BEGIN_NAMESPACE |
| 12 | |
| 13 | class QOpenGLCustomShaderStagePrivate |
| 14 | { |
| 15 | public: |
| 16 | QOpenGLCustomShaderStagePrivate() : |
| 17 | m_manager(nullptr) {} |
| 18 | |
| 19 | QPointer<QOpenGLEngineShaderManager> m_manager; |
| 20 | QByteArray m_source; |
| 21 | }; |
| 22 | |
| 23 | |
| 24 | |
| 25 | |
| 26 | QOpenGLCustomShaderStage::QOpenGLCustomShaderStage() |
| 27 | : d_ptr(new QOpenGLCustomShaderStagePrivate) |
| 28 | { |
| 29 | } |
| 30 | |
| 31 | QOpenGLCustomShaderStage::~QOpenGLCustomShaderStage() |
| 32 | { |
| 33 | Q_D(QOpenGLCustomShaderStage); |
| 34 | if (d->m_manager) { |
| 35 | d->m_manager->removeCustomStage(); |
| 36 | d->m_manager->sharedShaders->cleanupCustomStage(stage: this); |
| 37 | } |
| 38 | delete d_ptr; |
| 39 | } |
| 40 | |
| 41 | void QOpenGLCustomShaderStage::setUniformsDirty() |
| 42 | { |
| 43 | Q_D(QOpenGLCustomShaderStage); |
| 44 | if (d->m_manager) |
| 45 | d->m_manager->setDirty(); // ### Probably a bit overkill! |
| 46 | } |
| 47 | |
| 48 | bool QOpenGLCustomShaderStage::setOnPainter(QPainter* p) |
| 49 | { |
| 50 | Q_D(QOpenGLCustomShaderStage); |
| 51 | if (p->paintEngine()->type() != QPaintEngine::OpenGL2) { |
| 52 | qWarning(msg: "QOpenGLCustomShaderStage::setOnPainter() - paint engine not OpenGL2"); |
| 53 | return false; |
| 54 | } |
| 55 | if (d->m_manager) |
| 56 | qWarning(msg: "Custom shader is already set on a painter"); |
| 57 | |
| 58 | QOpenGL2PaintEngineEx *engine = static_cast<QOpenGL2PaintEngineEx*>(p->paintEngine()); |
| 59 | d->m_manager = QOpenGL2PaintEngineExPrivate::shaderManagerForEngine(engine); |
| 60 | Q_ASSERT(d->m_manager); |
| 61 | |
| 62 | d->m_manager->setCustomStage(this); |
| 63 | return true; |
| 64 | } |
| 65 | |
| 66 | void QOpenGLCustomShaderStage::removeFromPainter(QPainter* p) |
| 67 | { |
| 68 | Q_D(QOpenGLCustomShaderStage); |
| 69 | if (p->paintEngine()->type() != QPaintEngine::OpenGL2) |
| 70 | return; |
| 71 | |
| 72 | QOpenGL2PaintEngineEx *engine = static_cast<QOpenGL2PaintEngineEx*>(p->paintEngine()); |
| 73 | d->m_manager = QOpenGL2PaintEngineExPrivate::shaderManagerForEngine(engine); |
| 74 | Q_ASSERT(d->m_manager); |
| 75 | |
| 76 | // Just set the stage to null, don't call removeCustomStage(). |
| 77 | // This should leave the program in a compiled/linked state |
| 78 | // if the next custom shader stage is this one again. |
| 79 | d->m_manager->setCustomStage(nullptr); |
| 80 | d->m_manager = nullptr; |
| 81 | } |
| 82 | |
| 83 | QByteArray QOpenGLCustomShaderStage::source() const |
| 84 | { |
| 85 | Q_D(const QOpenGLCustomShaderStage); |
| 86 | return d->m_source; |
| 87 | } |
| 88 | |
| 89 | // Called by the shader manager if another custom shader is attached or |
| 90 | // the manager is deleted |
| 91 | void QOpenGLCustomShaderStage::setInactive() |
| 92 | { |
| 93 | Q_D(QOpenGLCustomShaderStage); |
| 94 | d->m_manager = nullptr; |
| 95 | } |
| 96 | |
| 97 | void QOpenGLCustomShaderStage::setSource(const QByteArray& s) |
| 98 | { |
| 99 | Q_D(QOpenGLCustomShaderStage); |
| 100 | d->m_source = s; |
| 101 | } |
| 102 | |
| 103 | QT_END_NAMESPACE |
| 104 |