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422 lines
15 KiB
C++
422 lines
15 KiB
C++
#include "util.hpp"
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#include <algorithm>
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#include <array>
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#include <iomanip>
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#include <sstream>
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#include <osg/FrameBufferObject>
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#include <osg/Node>
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#include <osg/NodeVisitor>
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#include <osg/TexEnvCombine>
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#include <osg/TexGen>
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#include <osgUtil/CullVisitor>
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#include <osgUtil/RenderStage>
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#include <components/resource/imagemanager.hpp>
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#include <components/resource/scenemanager.hpp>
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#include <components/sceneutil/texturetype.hpp>
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#include <components/vfs/pathutil.hpp>
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namespace SceneUtil
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{
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namespace
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{
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std::array<VFS::Path::Normalized, 32> generateGlowTextureNames()
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{
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constexpr VFS::Path::NormalizedView prefix("textures/magicitem");
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std::array<VFS::Path::Normalized, 32> result;
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for (std::size_t i = 0; i < result.size(); ++i)
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{
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std::stringstream stream;
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stream << "caust";
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stream << std::setw(2);
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stream << std::setfill('0');
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stream << i;
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stream << ".dds";
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result[i] = prefix / VFS::Path::Normalized(std::move(stream).str());
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}
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return result;
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}
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const std::array<VFS::Path::Normalized, 32> glowTextureNames = generateGlowTextureNames();
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struct FindLowestUnusedTexUnitVisitor : public osg::NodeVisitor
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{
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FindLowestUnusedTexUnitVisitor()
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: osg::NodeVisitor(TRAVERSE_ALL_CHILDREN)
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{
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}
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void apply(osg::Node& node) override
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{
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if (osg::StateSet* stateset = node.getStateSet())
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mLowestUnusedTexUnit
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= std::max(mLowestUnusedTexUnit, int(stateset->getTextureAttributeList().size()));
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traverse(node);
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}
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int mLowestUnusedTexUnit = 0;
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};
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}
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GlowUpdater::GlowUpdater(int texUnit, const osg::Vec4f& color,
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const std::vector<osg::ref_ptr<osg::Texture2D>>& textures, osg::Node* node, float duration,
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Resource::ResourceSystem* resourcesystem)
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: mTexUnit(texUnit)
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, mColor(color)
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, mOriginalColor(color)
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, mTextures(textures)
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, mNode(node)
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, mDuration(duration)
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, mOriginalDuration(duration)
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, mStartingTime(0)
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, mResourceSystem(resourcesystem)
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, mColorChanged(false)
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, mDone(false)
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{
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}
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void GlowUpdater::setDefaults(osg::StateSet* stateset)
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{
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if (mDone)
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removeTexture(stateset);
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else
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{
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stateset->setTextureMode(mTexUnit, GL_TEXTURE_2D, osg::StateAttribute::ON);
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osg::TexGen* texGen = new osg::TexGen;
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texGen->setMode(osg::TexGen::SPHERE_MAP);
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stateset->setTextureAttributeAndModes(
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mTexUnit, texGen, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
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osg::TexEnvCombine* texEnv = new osg::TexEnvCombine;
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texEnv->setSource0_RGB(osg::TexEnvCombine::CONSTANT);
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texEnv->setConstantColor(mColor);
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texEnv->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
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texEnv->setSource2_RGB(osg::TexEnvCombine::TEXTURE);
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texEnv->setOperand2_RGB(osg::TexEnvCombine::SRC_COLOR);
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stateset->setTextureAttributeAndModes(mTexUnit, texEnv, osg::StateAttribute::ON);
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stateset->addUniform(new osg::Uniform("envMapColor", mColor));
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}
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}
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void GlowUpdater::removeTexture(osg::StateSet* stateset)
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{
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stateset->removeTextureAttribute(mTexUnit, osg::StateAttribute::TEXTURE);
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stateset->removeTextureAttribute(mTexUnit, osg::StateAttribute::TEXGEN);
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stateset->removeTextureAttribute(mTexUnit, osg::StateAttribute::TEXENV);
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stateset->removeTextureMode(mTexUnit, GL_TEXTURE_2D);
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stateset->removeUniform("envMapColor");
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osg::StateSet::TextureAttributeList& list = stateset->getTextureAttributeList();
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while (list.size() && list.rbegin()->empty())
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list.pop_back();
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}
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void GlowUpdater::apply(osg::StateSet* stateset, osg::NodeVisitor* nv)
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{
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if (mColorChanged)
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{
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this->reset();
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setDefaults(stateset);
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mColorChanged = false;
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}
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if (mDone)
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return;
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// Set the starting time to measure glow duration from if this is a temporary glow
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if ((mDuration >= 0) && mStartingTime == 0)
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mStartingTime = nv->getFrameStamp()->getSimulationTime();
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float time = nv->getFrameStamp()->getSimulationTime();
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int index = (int)(time * 16) % mTextures.size();
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stateset->setTextureAttribute(
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mTexUnit, mTextures[index], osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
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if ((mDuration >= 0)
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&& (time - mStartingTime > mDuration)) // If this is a temporary glow and it has finished its duration
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{
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if (mOriginalDuration >= 0) // if this glowupdater was a temporary glow since its creation
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{
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removeTexture(stateset);
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this->reset();
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mDone = true;
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// normally done in StateSetUpdater::operator(), but needs doing here so the shader visitor sees the
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// right StateSet
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mNode->setStateSet(stateset);
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mResourceSystem->getSceneManager()->recreateShaders(mNode);
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}
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if (mOriginalDuration < 0) // if this glowupdater was originally a permanent glow
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{
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mDuration = mOriginalDuration;
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mStartingTime = 0;
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mColor = mOriginalColor;
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this->reset();
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setDefaults(stateset);
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}
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}
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}
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bool GlowUpdater::isPermanentGlowUpdater()
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{
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return (mDuration < 0);
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}
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bool GlowUpdater::isDone()
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{
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return mDone;
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}
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void GlowUpdater::setColor(const osg::Vec4f& color)
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{
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mColor = color;
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mColorChanged = true;
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}
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void GlowUpdater::setDuration(float duration)
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{
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mDuration = duration;
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}
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osg::Vec4f colourFromRGB(unsigned int clr)
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{
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osg::Vec4f colour(
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((clr >> 0) & 0xFF) / 255.0f, ((clr >> 8) & 0xFF) / 255.0f, ((clr >> 16) & 0xFF) / 255.0f, 1.f);
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return colour;
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}
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osg::Vec4f colourFromRGBA(unsigned int value)
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{
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return osg::Vec4f(makeOsgColorComponent(value, 0), makeOsgColorComponent(value, 8),
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makeOsgColorComponent(value, 16), makeOsgColorComponent(value, 24));
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}
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float makeOsgColorComponent(unsigned int value, unsigned int shift)
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{
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return float((value >> shift) & 0xFFu) / 255.0f;
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}
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bool hasUserDescription(const osg::Node* node, std::string_view pattern)
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{
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if (node == nullptr)
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return false;
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const osg::UserDataContainer* udc = node->getUserDataContainer();
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if (udc && udc->getNumDescriptions() > 0)
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{
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for (auto& descr : udc->getDescriptions())
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{
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if (descr == pattern)
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return true;
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}
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}
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return false;
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}
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osg::ref_ptr<GlowUpdater> addEnchantedGlow(osg::ref_ptr<osg::Node> node, Resource::ResourceSystem* resourceSystem,
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const osg::Vec4f& glowColor, float glowDuration)
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{
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std::vector<osg::ref_ptr<osg::Texture2D>> textures;
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for (const VFS::Path::Normalized& name : glowTextureNames)
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{
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osg::ref_ptr<osg::Image> image = resourceSystem->getImageManager()->getImage(name);
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osg::ref_ptr<osg::Texture2D> tex(new osg::Texture2D(image));
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tex->setWrap(osg::Texture::WRAP_S, osg::Texture2D::REPEAT);
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tex->setWrap(osg::Texture::WRAP_T, osg::Texture2D::REPEAT);
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resourceSystem->getSceneManager()->applyFilterSettings(tex);
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textures.push_back(tex);
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}
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FindLowestUnusedTexUnitVisitor findLowestUnusedTexUnitVisitor;
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node->accept(findLowestUnusedTexUnitVisitor);
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int texUnit = findLowestUnusedTexUnitVisitor.mLowestUnusedTexUnit;
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osg::ref_ptr<GlowUpdater> glowUpdater
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= new GlowUpdater(texUnit, glowColor, textures, node, glowDuration, resourceSystem);
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node->addUpdateCallback(glowUpdater);
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// set a texture now so that the ShaderVisitor can find it
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osg::ref_ptr<osg::StateSet> writableStateSet = nullptr;
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if (!node->getStateSet())
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writableStateSet = node->getOrCreateStateSet();
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else
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{
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writableStateSet = new osg::StateSet(*node->getStateSet(), osg::CopyOp::SHALLOW_COPY);
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node->setStateSet(writableStateSet);
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}
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writableStateSet->setTextureAttributeAndModes(texUnit, textures.front(), osg::StateAttribute::ON);
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writableStateSet->setTextureAttributeAndModes(texUnit, new TextureType("envMap"), osg::StateAttribute::ON);
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writableStateSet->addUniform(new osg::Uniform("envMapColor", glowColor));
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resourceSystem->getSceneManager()->recreateShaders(std::move(node));
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return glowUpdater;
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}
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void attachAlphaToCoverageFriendlyFramebufferToCamera(osg::Camera* camera, osg::Camera::BufferComponent buffer,
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osg::Texture* texture, unsigned int level, unsigned int face, bool mipMapGeneration,
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bool addMSAAIntermediateTarget)
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{
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unsigned int samples = 0;
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unsigned int colourSamples = 0;
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if (addMSAAIntermediateTarget)
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{
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// Alpha-to-coverage requires a multisampled framebuffer.
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// OSG will set that up automatically and resolve it to the specified single-sample texture for us.
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// For some reason, two samples are needed, at least with some drivers.
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samples = 2;
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colourSamples = 1;
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}
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camera->attach(buffer, texture, level, face, mipMapGeneration, samples, colourSamples);
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}
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OperationSequence::OperationSequence(bool keep)
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: Operation("OperationSequence", keep)
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, mOperationQueue(new osg::OperationQueue())
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{
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}
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void OperationSequence::operator()(osg::Object* object)
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{
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mOperationQueue->runOperations(object);
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}
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void OperationSequence::add(osg::Operation* operation)
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{
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mOperationQueue->add(operation);
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}
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GLenum computeUnsizedPixelFormat(GLenum format)
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{
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switch (format)
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{
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// Try compressed formats first, they're more likely to be used
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// Generic
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case GL_COMPRESSED_ALPHA_ARB:
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return GL_ALPHA;
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case GL_COMPRESSED_INTENSITY_ARB:
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return GL_INTENSITY;
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case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
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return GL_LUMINANCE_ALPHA;
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case GL_COMPRESSED_LUMINANCE_ARB:
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return GL_LUMINANCE;
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case GL_COMPRESSED_RGB_ARB:
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return GL_RGB;
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case GL_COMPRESSED_RGBA_ARB:
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return GL_RGBA;
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// S3TC
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case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
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return GL_RGB;
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case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
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case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
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case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
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case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
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case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
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return GL_RGBA;
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// RGTC
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case GL_COMPRESSED_RED_RGTC1_EXT:
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case GL_COMPRESSED_SIGNED_RED_RGTC1_EXT:
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return GL_RED;
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case GL_COMPRESSED_RED_GREEN_RGTC2_EXT:
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case GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT:
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return GL_RG;
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// PVRTC
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case GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG:
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case GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG:
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return GL_RGB;
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case GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG:
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case GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG:
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return GL_RGBA;
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// ETC
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case GL_COMPRESSED_R11_EAC:
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case GL_COMPRESSED_SIGNED_R11_EAC:
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return GL_RED;
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case GL_COMPRESSED_RG11_EAC:
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case GL_COMPRESSED_SIGNED_RG11_EAC:
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return GL_RG;
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case GL_ETC1_RGB8_OES:
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case GL_COMPRESSED_RGB8_ETC2:
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case GL_COMPRESSED_SRGB8_ETC2:
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return GL_RGB;
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case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
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case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
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case GL_COMPRESSED_RGBA8_ETC2_EAC:
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case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
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return GL_RGBA;
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// ASTC
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case GL_COMPRESSED_RGBA_ASTC_4x4_KHR:
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case GL_COMPRESSED_RGBA_ASTC_5x4_KHR:
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case GL_COMPRESSED_RGBA_ASTC_5x5_KHR:
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case GL_COMPRESSED_RGBA_ASTC_6x5_KHR:
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case GL_COMPRESSED_RGBA_ASTC_6x6_KHR:
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case GL_COMPRESSED_RGBA_ASTC_8x5_KHR:
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case GL_COMPRESSED_RGBA_ASTC_8x6_KHR:
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case GL_COMPRESSED_RGBA_ASTC_8x8_KHR:
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case GL_COMPRESSED_RGBA_ASTC_10x5_KHR:
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case GL_COMPRESSED_RGBA_ASTC_10x6_KHR:
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case GL_COMPRESSED_RGBA_ASTC_10x8_KHR:
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case GL_COMPRESSED_RGBA_ASTC_10x10_KHR:
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case GL_COMPRESSED_RGBA_ASTC_12x10_KHR:
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case GL_COMPRESSED_RGBA_ASTC_12x12_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
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case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
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return GL_RGBA;
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// Plug in some holes computePixelFormat has, you never know when these could come in handy
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case GL_INTENSITY4:
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case GL_INTENSITY8:
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case GL_INTENSITY12:
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case GL_INTENSITY16:
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return GL_INTENSITY;
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case GL_LUMINANCE4:
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case GL_LUMINANCE8:
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case GL_LUMINANCE12:
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case GL_LUMINANCE16:
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return GL_LUMINANCE;
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case GL_LUMINANCE4_ALPHA4:
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case GL_LUMINANCE6_ALPHA2:
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case GL_LUMINANCE8_ALPHA8:
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case GL_LUMINANCE12_ALPHA4:
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case GL_LUMINANCE12_ALPHA12:
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case GL_LUMINANCE16_ALPHA16:
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return GL_LUMINANCE_ALPHA;
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}
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return osg::Image::computePixelFormat(format);
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}
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const std::string& getTextureType(const osg::StateSet& stateset, const osg::Texture& texture, unsigned int texUnit)
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{
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const osg::StateAttribute* type = stateset.getTextureAttribute(texUnit, SceneUtil::TextureType::AttributeType);
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if (type)
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return static_cast<const SceneUtil::TextureType*>(type)->getName();
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return texture.getName();
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}
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}
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