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41c08b1c3b
(cherry picked from commit 496b3aef88b8fd867dcdd23a6ca43144573b1b2f) Stereo friendly water (cherry picked from commit 0e22c55e48a7f965367d3d430c1bef5357b22748) Option to disable per view mapping. Include memory header De-hardcode settings and buffers. formatting error Update water.cpp (whitespace) Update water.cpp (more whitespace) include render order c array -> c++ array
68 lines
2.8 KiB
C++
68 lines
2.8 KiB
C++
#ifndef OPENMW_RTT_H
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#define OPENMW_RTT_H
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#include <osg/Node>
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#include <map>
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#include <memory>
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namespace osg
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{
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class Texture2D;
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class Camera;
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}
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namespace osgUtil
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{
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class CullVisitor;
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}
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namespace SceneUtil
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{
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/// @brief Implements per-view RTT operations.
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/// @par With a naive RTT implementation, subsequent views of multiple views will overwrite the results of the previous views, leading to
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/// the results of the last view being broadcast to all views. An error in all cases where the RTT result depends on the view.
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/// @par If using an RTTNode this is solved by mapping RTT operations to CullVisitors, which will be unique per view. This requires
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/// instancing one camera per view, and traversing only the camera mapped to that CV during cull traversals.
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/// @par Camera settings should be effectuated by overriding the setDefaults() and apply() methods, following a pattern similar to SceneUtil::StateSetUpdater
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/// @par When using the RTT texture in your statesets, it is recommended to use SceneUtil::StateSetUpdater as a cull callback to handle this as the appropriate
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/// textures can be retrieved during SceneUtil::StateSetUpdater::Apply()
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/// @par For any of COLOR_BUFFER or DEPTH_BUFFER not added during setDefaults(), RTTNode will attach a default buffer. The default color buffer has an internal format of GL_RGB.
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/// The default depth buffer has internal format GL_DEPTH_COMPONENT24, source format GL_DEPTH_COMPONENT, and source type GL_UNSIGNED_INT. Default wrap is CLAMP_TO_EDGE and filter LINEAR.
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class RTTNode : public osg::Node
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{
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public:
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RTTNode(uint32_t textureWidth, uint32_t textureHeight, int renderOrderNum, bool doPerViewMapping);
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~RTTNode();
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osg::Texture* getColorTexture(osgUtil::CullVisitor* cv);
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osg::Texture* getDepthTexture(osgUtil::CullVisitor* cv);
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/// Apply state - to override in derived classes
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/// @note Due to the view mapping approach you *have* to apply all camera settings, even if they have not changed since the last frame.
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virtual void setDefaults(osg::Camera* camera) {};
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/// Set default settings - optionally override in derived classes
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virtual void apply(osg::Camera* camera) {};
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void cull(osgUtil::CullVisitor* cv);
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private:
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struct ViewDependentData
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{
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osg::ref_ptr<osg::Camera> mCamera;
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};
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ViewDependentData* getViewDependentData(osgUtil::CullVisitor* cv);
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typedef std::map< osgUtil::CullVisitor*, std::unique_ptr<ViewDependentData> > ViewDependentDataMap;
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ViewDependentDataMap mViewDependentDataMap;
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uint32_t mTextureWidth;
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uint32_t mTextureHeight;
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int mRenderOrderNum;
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bool mDoPerViewMapping;
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};
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}
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#endif
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