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Make shadow debug HUD thread-safe

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* Double buffer the frustum uniforms.
* Don't mess with the debug geometry's StateSet.
* Change two-element vectors to arrays so the size is explicit.
This commit is contained in:
AnyOldName3 2020-08-19 19:29:19 +01:00
parent 5c37b5bc4b
commit 98b2d5d921
2 changed files with 14 additions and 11 deletions
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20
components/sceneutil/mwshadowtechnique.cpp
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@ -3104,12 +3104,12 @@ SceneUtil::MWShadowTechnique::DebugHUD::DebugHUD(int numberOfShadowMapsPerLight)
fragmentShader = new osg::Shader(osg::Shader::FRAGMENT, debugFrustumFragmentShaderSource);
frustumProgram->addShader(fragmentShader);
for (int i = 0; i < 2; ++i)
for (auto& frustumGeometry : mFrustumGeometries)
{
mFrustumGeometries.emplace_back(new osg::Geometry());
mFrustumGeometries[i]->setCullingActive(false);
frustumGeometry = new osg::Geometry();
frustumGeometry->setCullingActive(false);
mFrustumGeometries[i]->getOrCreateStateSet()->setAttributeAndModes(frustumProgram, osg::StateAttribute::ON);
frustumGeometry->getOrCreateStateSet()->setAttributeAndModes(frustumProgram, osg::StateAttribute::ON);
}
osg::ref_ptr<osg::DrawElementsUShort> frustumDrawElements = new osg::DrawElementsUShort(osg::PrimitiveSet::LINE_STRIP);
@ -3145,12 +3145,14 @@ void SceneUtil::MWShadowTechnique::DebugHUD::draw(osg::ref_ptr<osg::Texture2D> t
// It might be possible to change shadow settings at runtime
if (shadowMapNumber > mDebugCameras.size())
addAnotherShadowMap();
mFrustumUniforms[shadowMapNumber]->set(matrix);
osg::ref_ptr<osg::StateSet> stateSet = mDebugGeometry[shadowMapNumber]->getOrCreateStateSet();
osg::ref_ptr<osg::StateSet> stateSet = new osg::StateSet();
stateSet->setTextureAttributeAndModes(sDebugTextureUnit, texture, osg::StateAttribute::ON);
auto frustumUniform = mFrustumUniforms[cv.getTraversalNumber() % 2][shadowMapNumber];
frustumUniform->set(matrix);
stateSet->addUniform(frustumUniform);
// Some of these calls may be superfluous.
unsigned int traversalMask = cv.getTraversalMask();
cv.setTraversalMask(mDebugGeometry[shadowMapNumber]->getNodeMask());
@ -3205,6 +3207,6 @@ void SceneUtil::MWShadowTechnique::DebugHUD::addAnotherShadowMap()
mFrustumTransforms[shadowMapNumber]->setCullingActive(false);
mDebugCameras[shadowMapNumber]->addChild(mFrustumTransforms[shadowMapNumber]);
mFrustumUniforms.push_back(new osg::Uniform(osg::Uniform::FLOAT_MAT4, "transform"));
mFrustumTransforms[shadowMapNumber]->getOrCreateStateSet()->addUniform(mFrustumUniforms[shadowMapNumber]);
for(auto& uniformVector : mFrustumUniforms)
uniformVector.push_back(new osg::Uniform(osg::Uniform::FLOAT_MAT4, "transform"));
}

5
components/sceneutil/mwshadowtechnique.hpp
View File

@ -19,6 +19,7 @@
#ifndef COMPONENTS_SCENEUTIL_MWSHADOWTECHNIQUE_H
#define COMPONENTS_SCENEUTIL_MWSHADOWTECHNIQUE_H 1
#include <array>
#include <mutex>
#include <osg/Camera>
@ -282,8 +283,8 @@ namespace SceneUtil {
osg::ref_ptr<osg::Program> mDebugProgram;
std::vector<osg::ref_ptr<osg::Node>> mDebugGeometry;
std::vector<osg::ref_ptr<osg::Group>> mFrustumTransforms;
std::vector<osg::ref_ptr<osg::Uniform>> mFrustumUniforms;
std::vector<osg::ref_ptr<osg::Geometry>> mFrustumGeometries;
std::array<std::vector<osg::ref_ptr<osg::Uniform>>, 2> mFrustumUniforms;
std::array<osg::ref_ptr<osg::Geometry>, 2> mFrustumGeometries;
};
osg::ref_ptr<DebugHUD> _debugHud;