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108 lines
4.3 KiB
C++
108 lines
4.3 KiB
C++
#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/sceneutil/nodecallback.hpp>
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#include <components/settings/settings.hpp>
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#include <components/sceneutil/depth.hpp>
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namespace SceneUtil
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{
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class CullCallback : public SceneUtil::NodeCallback<CullCallback, RTTNode*, osgUtil::CullVisitor*>
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{
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public:
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void operator()(RTTNode* node, osgUtil::CullVisitor* cv)
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{
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node->cull(cv);
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}
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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);
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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::PACKED_DEPTH_STENCIL_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 | GL_STENCIL_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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SceneUtil::setCameraClearDepth(camera);
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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::PACKED_DEPTH_STENCIL_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_STENCIL_EXT);
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depthBuffer->setInternalFormat(GL_DEPTH24_STENCIL8_EXT);
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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_24_8_EXT);
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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::PACKED_DEPTH_STENCIL_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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