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39
40#include "qglcustomshaderstage_p.h"
41#include "qglengineshadermanager_p.h"
42#include "qpaintengineex_opengl2_p.h"
43#include <private/qpainter_p.h>
44
45QT_BEGIN_NAMESPACE
46
47class QGLCustomShaderStagePrivate
48{
49public:
50 QGLCustomShaderStagePrivate() :
51 m_manager(0) {}
52
53 QPointer<QGLEngineShaderManager> m_manager;
54 QByteArray m_source;
55};
56
57
58
59
60QGLCustomShaderStage::QGLCustomShaderStage()
61 : d_ptr(new QGLCustomShaderStagePrivate)
62{
63}
64
65QGLCustomShaderStage::~QGLCustomShaderStage()
66{
67 Q_D(QGLCustomShaderStage);
68 if (d->m_manager) {
69 d->m_manager->removeCustomStage();
70 d->m_manager->sharedShaders->cleanupCustomStage(this);
71 }
72 delete d_ptr;
73}
74
75void QGLCustomShaderStage::setUniformsDirty()
76{
77 Q_D(QGLCustomShaderStage);
78 if (d->m_manager)
79 d->m_manager->setDirty(); // ### Probably a bit overkill!
80}
81
82bool QGLCustomShaderStage::setOnPainter(QPainter* p)
83{
84 Q_D(QGLCustomShaderStage);
85 if (p->paintEngine()->type() != QPaintEngine::OpenGL2) {
86 qWarning("QGLCustomShaderStage::setOnPainter() - paint engine not OpenGL2");
87 return false;
88 }
89 if (d->m_manager)
90 qWarning("Custom shader is already set on a painter");
91
92 QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx*>(p->paintEngine());
93 d->m_manager = QGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
94 Q_ASSERT(d->m_manager);
95
96 d->m_manager->setCustomStage(this);
97 return true;
98}
99
100void QGLCustomShaderStage::removeFromPainter(QPainter* p)
101{
102 Q_D(QGLCustomShaderStage);
103 if (p->paintEngine()->type() != QPaintEngine::OpenGL2)
104 return;
105
106 QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx*>(p->paintEngine());
107 d->m_manager = QGL2PaintEngineExPrivate::shaderManagerForEngine(engine);
108 Q_ASSERT(d->m_manager);
109
110 // Just set the stage to null, don't call removeCustomStage().
111 // This should leave the program in a compiled/linked state
112 // if the next custom shader stage is this one again.
113 d->m_manager->setCustomStage(0);
114 d->m_manager = 0;
115}
116
117QByteArray QGLCustomShaderStage::source() const
118{
119 Q_D(const QGLCustomShaderStage);
120 return d->m_source;
121}
122
123// Called by the shader manager if another custom shader is attached or
124// the manager is deleted
125void QGLCustomShaderStage::setInactive()
126{
127 Q_D(QGLCustomShaderStage);
128 d->m_manager = 0;
129}
130
131void QGLCustomShaderStage::setSource(const QByteArray& s)
132{
133 Q_D(QGLCustomShaderStage);
134 d->m_source = s;
135}
136
137QT_END_NAMESPACE
138