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| |
| #ifndef QSSG_RENDER_LAYER_HELPER_IMPL_H |
| #define QSSG_RENDER_LAYER_HELPER_IMPL_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtQuick3DRender/private/qssgrenderbasetypes_p.h> |
| #include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h> |
| #include <QtQuick3DRuntimeRender/private/qssgrendercontextcore_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| /** An independent, testable entity to encapsulate taking at least: |
| * layer, current viewport rect, current scissor rect, presentation design dimensions |
| * and producing a set of rectangles: |
| * layer viewport rect (inside viewport rect and calculated using outer viewport rect info) |
| * layer scissor rect (inside current scissor rect) |
| * layer camera rect (may be the viewport rect) |
| * |
| * In the case where we have to render offscreen for this layer then we need to handle produce |
| * a set of texture dimensions and the layer camera rect ends up being same size but with no |
| *offsets. |
| * |
| * This object should handle part of any translation from screenspace to global space. |
| * I am using language level access control on this object because it needs specific |
| * interface design that will enable future modifications. |
| */ |
| struct Q_AUTOTEST_EXPORT QSSGLayerRenderHelper |
| { |
| private: |
| QSSGRenderLayer *m_layer = nullptr; |
| QSSGRenderCamera *m_camera = nullptr; |
| |
| QRectF m_viewport; |
| QRectF m_scissor; |
| |
| public: |
| QSSGLayerRenderHelper() = default; |
| |
| QSSGLayerRenderHelper(const QRectF &inViewport, |
| const QRectF &inScissor, |
| QSSGRenderLayer &inLayer); |
| |
| QSSGRenderLayer *layer() const { return m_layer; } |
| QSSGRenderCamera *camera() const { return m_camera; } |
| |
| // Does not differ whether offscreen or not, simply states how this layer maps to the |
| // presentation |
| QRectF viewport() const { return m_viewport; } |
| // Does not differ whether offscreen or not, scissor rect of how this layer maps to |
| // presentation. |
| QRectF scissor() const { return m_scissor; } |
| |
| QSize textureDimensions() const; |
| |
| QSSGCameraGlobalCalculationResult setupCameraForRender(QSSGRenderCamera &inCamera); |
| |
| static QSSGOption<QVector2D> layerMouseCoords(const QRectF &viewport, const QVector2D &inMouseCoords, const QVector2D &inWindowDimensions, bool inForceIntersect); |
| static QSSGOption<QSSGRenderRay> pickRay(const QSSGRenderCamera &camera, const QRectF &viewport, const QVector2D &inMouseCoords, const QVector2D &inWindowDimensions, bool inForceIntersect); |
| |
| // Checks the various viewports and determines if the layer is visible or not. |
| bool isLayerVisible() const; |
| |
| private: |
| // Viewport used when actually rendering. In the case where this is an offscreen item then |
| // it may be different than the layer to presentation viewport. |
| QRectF layerRenderViewport() const; |
| }; |
| QT_END_NAMESPACE |
| |
| #endif // QSSG_RENDER_LAYER_HELPER_IMPL_H |