mirror of https://github.com/OpenMW/openmw.git
Stereo friendly StateSetUpdater
(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++ arraydont-compose-content
madsbuvi
4 years ago
parent
0433a53883
commit
41c08b1c3b
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#include "rtt.hpp"
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#include "util.hpp"
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#include <osg/Node>
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#include <osg/NodeVisitor>
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#include <osg/Texture2D>
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#include <osgUtil/CullVisitor>
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#include <components/settings/settings.hpp>
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namespace SceneUtil
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{
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// RTTNode's cull callback
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class CullCallback : public osg::NodeCallback
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{
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public:
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CullCallback(RTTNode* group)
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: mGroup(group) {}
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void operator()(osg::Node* node, osg::NodeVisitor* nv) override
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{
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osgUtil::CullVisitor* cv = static_cast<osgUtil::CullVisitor*>(nv);
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mGroup->cull(cv);
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}
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RTTNode* mGroup;
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};
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RTTNode::RTTNode(uint32_t textureWidth, uint32_t textureHeight, int renderOrderNum, bool doPerViewMapping)
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: mTextureWidth(textureWidth)
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, mTextureHeight(textureHeight)
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, mRenderOrderNum(renderOrderNum)
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, mDoPerViewMapping(doPerViewMapping)
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{
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addCullCallback(new CullCallback(this));
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setCullingActive(false);
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}
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RTTNode::~RTTNode()
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{
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}
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void RTTNode::cull(osgUtil::CullVisitor* cv)
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{
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auto* vdd = getViewDependentData(cv);
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apply(vdd->mCamera);
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vdd->mCamera->accept(*cv);
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}
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osg::Texture* RTTNode::getColorTexture(osgUtil::CullVisitor* cv)
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{
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return getViewDependentData(cv)->mCamera->getBufferAttachmentMap()[osg::Camera::COLOR_BUFFER]._texture;
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}
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osg::Texture* RTTNode::getDepthTexture(osgUtil::CullVisitor* cv)
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{
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return getViewDependentData(cv)->mCamera->getBufferAttachmentMap()[osg::Camera::DEPTH_BUFFER]._texture;
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}
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RTTNode::ViewDependentData* RTTNode::getViewDependentData(osgUtil::CullVisitor* cv)
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{
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if (!mDoPerViewMapping)
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// Always setting it to null is an easy way to disable per-view mapping when mDoPerViewMapping is false.
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// This is safe since the visitor is never dereferenced.
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cv = nullptr;
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if (mViewDependentDataMap.count(cv) == 0)
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{
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auto camera = new osg::Camera();
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mViewDependentDataMap[cv].reset(new ViewDependentData);
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mViewDependentDataMap[cv]->mCamera = camera;
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camera->setRenderOrder(osg::Camera::PRE_RENDER, mRenderOrderNum);
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camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
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camera->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
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camera->setViewport(0, 0, mTextureWidth, mTextureHeight);
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setDefaults(mViewDependentDataMap[cv]->mCamera.get());
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// Create any buffer attachments not added in setDefaults
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if (camera->getBufferAttachmentMap().count(osg::Camera::COLOR_BUFFER) == 0)
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{
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auto colorBuffer = new osg::Texture2D;
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colorBuffer->setTextureSize(mTextureWidth, mTextureHeight);
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colorBuffer->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
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colorBuffer->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
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colorBuffer->setInternalFormat(GL_RGB);
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colorBuffer->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
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colorBuffer->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
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camera->attach(osg::Camera::COLOR_BUFFER, colorBuffer);
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SceneUtil::attachAlphaToCoverageFriendlyFramebufferToCamera(camera, osg::Camera::COLOR_BUFFER, colorBuffer);
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}
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if (camera->getBufferAttachmentMap().count(osg::Camera::DEPTH_BUFFER) == 0)
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{
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auto depthBuffer = new osg::Texture2D;
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depthBuffer->setTextureSize(mTextureWidth, mTextureHeight);
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depthBuffer->setSourceFormat(GL_DEPTH_COMPONENT);
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depthBuffer->setInternalFormat(GL_DEPTH_COMPONENT24);
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depthBuffer->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
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depthBuffer->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
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depthBuffer->setSourceType(GL_UNSIGNED_INT);
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depthBuffer->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
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depthBuffer->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
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camera->attach(osg::Camera::DEPTH_BUFFER, depthBuffer);
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}
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}
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return mViewDependentDataMap[cv].get();
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}
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}
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@ -0,0 +1,68 @@
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#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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