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Diffstat (limited to 'src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderHelper.h')
| -rw-r--r-- | src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderHelper.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderHelper.h b/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderHelper.h new file mode 100644 index 0000000..616ebe1 --- /dev/null +++ b/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderHelper.h @@ -0,0 +1,115 @@ +/**************************************************************************** +** +** Copyright (C) 2008-2012 NVIDIA Corporation. +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt 3D Studio. +** +** $QT_BEGIN_LICENSE:GPL$ +** 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 The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 or (at your option) any later version +** approved by the KDE Free Qt Foundation. The licenses are as published by +** the Free Software Foundation and appearing in the file LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#pragma once +#include "Qt3DSRender.h" +#include "foundation/Qt3DSVec2.h" +#include "render/Qt3DSRenderBaseTypes.h" +#include "Qt3DSRenderCamera.h" +#include "Qt3DSRenderContextCore.h" + +namespace qt3ds { +namespace render { + + /** 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 SLayerRenderHelper + { + private: + NVRenderRectF m_PresentationViewport; + NVRenderRectF m_PresentationScissor; + QT3DSVec2 m_PresentationDesignDimensions; + SLayer *m_Layer; + SCamera *m_Camera; + bool m_Offscreen; + + NVRenderRectF m_Viewport; + NVRenderRectF m_Scissor; + + ScaleModes::Enum m_ScaleMode; + QT3DSVec2 m_ScaleFactor; + + public: + SLayerRenderHelper(); + + SLayerRenderHelper(const NVRenderRectF &inPresentationViewport, + const NVRenderRectF &inPresentationScissor, + const QT3DSVec2 &inPresentationDesignDimensions, SLayer &inLayer, + bool inOffscreen, qt3ds::render::ScaleModes::Enum inScaleMode, + qt3ds::QT3DSVec2 inScaleFactor); + + NVRenderRectF GetPresentationViewport() const { return m_PresentationViewport; } + NVRenderRectF GetPresentationScissor() const { return m_PresentationScissor; } + QT3DSVec2 GetPresentationDesignDimensions() const { return m_PresentationDesignDimensions; } + SLayer *GetLayer() const { return m_Layer; } + SCamera *GetCamera() const { return m_Camera; } + bool IsOffscreen() const { return m_Offscreen; } + + // Does not differ whether offscreen or not, simply states how this layer maps to the + // presentation + NVRenderRectF GetLayerToPresentationViewport() const { return m_Viewport; } + // Does not differ whether offscreen or not, scissor rect of how this layer maps to + // presentation. + NVRenderRectF GetLayerToPresentationScissorRect() const { return m_Scissor; } + + QSize GetTextureDimensions() const; + + SCameraGlobalCalculationResult SetupCameraForRender(SCamera &inCamera); + + Option<QT3DSVec2> GetLayerMouseCoords(const QT3DSVec2 &inMouseCoords, + const QT3DSVec2 &inWindowDimensions, + bool inForceIntersect) const; + + Option<SRay> GetPickRay(const QT3DSVec2 &inMouseCoords, const QT3DSVec2 &inWindowDimensions, + bool inForceIntersect, bool sceneCameraView = false) const; + + // 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. + NVRenderRectF GetLayerRenderViewport() const; + }; +} +} |