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moddable post-processing pipeline

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This commit is contained in:
cody glassman 2022-05-13 18:58:00 -07:00
parent e7fb8b6fd8
commit 04843fed6d
130 changed files with 8645 additions and 608 deletions
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74
components/shader/shadervisitor.cpp
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@ -11,6 +11,7 @@
#include <osg/Multisample>
#include <osg/Texture>
#include <osg/ValueObject>
#include <osg/Capability>
#include <osgParticle/ParticleSystem>
@ -28,6 +29,50 @@
#include "removedalphafunc.hpp"
#include "shadermanager.hpp"
namespace
{
class OpaqueDepthAttribute : public osg::StateAttribute
{
public:
OpaqueDepthAttribute() = default;
OpaqueDepthAttribute(const OpaqueDepthAttribute& copy, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY)
: osg::StateAttribute(copy, copyop), mTextures(copy.mTextures), mUnit(copy.mUnit) {}
void setTexturesAndUnit(const std::array<osg::ref_ptr<osg::Texture2D>, 2>& textures, int unit)
{
mTextures = textures;
mUnit = unit;
}
META_StateAttribute(Shader, OpaqueDepthAttribute, osg::StateAttribute::TEXTURE)
int compare(const StateAttribute& sa) const override
{
COMPARE_StateAttribute_Types(OpaqueDepthAttribute, sa);
COMPARE_StateAttribute_Parameter(mTextures);
return 0;
}
void apply(osg::State& state) const override
{
auto index = state.getFrameStamp()->getFrameNumber() % 2;
if (!mTextures[index])
return;
state.setActiveTextureUnit(mUnit);
state.applyTextureAttribute(mUnit, mTextures[index]);
}
private:
mutable std::array<osg::ref_ptr<osg::Texture2D>, 2> mTextures;
int mUnit;
};
}
namespace Shader
{
/**
@ -165,6 +210,7 @@ namespace Shader
, mAutoUseSpecularMaps(false)
, mApplyLightingToEnvMaps(false)
, mConvertAlphaTestToAlphaToCoverage(false)
, mSupportsNormalsRT(false)
, mShaderManager(shaderManager)
, mImageManager(imageManager)
, mDefaultShaderPrefix(defaultShaderPrefix)
@ -611,6 +657,14 @@ namespace Shader
defineMap["endLight"] = "0";
}
if (reqs.mAlphaBlend && mSupportsNormalsRT)
{
if (reqs.mSoftParticles)
defineMap["disableNormals"] = "1";
else
writableStateSet->setAttribute(new osg::Disablei(GL_BLEND, 1));
}
if (writableStateSet->getMode(GL_ALPHA_TEST) != osg::StateAttribute::INHERIT && !previousAddedState->hasMode(GL_ALPHA_TEST))
removedState->setMode(GL_ALPHA_TEST, writableStateSet->getMode(GL_ALPHA_TEST));
// This disables the deprecated fixed-function alpha test
@ -629,7 +683,7 @@ namespace Shader
updateRemovedState(*writableUserData, removedState);
}
if (reqs.mSoftParticles)
if (reqs.mSoftParticles && mOpaqueDepthTex.front())
{
osg::ref_ptr<osg::Depth> depth = new SceneUtil::AutoDepth;
depth->setWriteMask(false);
@ -639,14 +693,18 @@ namespace Shader
writableStateSet->addUniform(new osg::Uniform("particleSize", reqs.mSoftParticleSize));
addedState->addUniform("particleSize");
writableStateSet->addUniform(new osg::Uniform("opaqueDepthTex", 2));
constexpr int unit = 2;
writableStateSet->addUniform(new osg::Uniform("opaqueDepthTex", unit));
addedState->addUniform("opaqueDepthTex");
writableStateSet->setTextureAttributeAndModes(2, mOpaqueDepthTex, osg::StateAttribute::ON);
addedState->setTextureAttributeAndModes(2, mOpaqueDepthTex);
osg::ref_ptr<OpaqueDepthAttribute> opaqueDepthAttr = new OpaqueDepthAttribute;
opaqueDepthAttr->setTexturesAndUnit(mOpaqueDepthTex, unit);
writableStateSet->setAttributeAndModes(opaqueDepthAttr, osg::StateAttribute::ON|osg::StateAttribute::OVERRIDE);
addedState->setAttributeAndModes(opaqueDepthAttr);
}
defineMap["softParticles"] = reqs.mSoftParticles ? "1" : "0";
defineMap["softParticles"] = reqs.mSoftParticles && mOpaqueDepthTex.front() ? "1" : "0";
Stereo::Manager::instance().shaderStereoDefines(defineMap);
@ -840,7 +898,7 @@ namespace Shader
{
pushRequirements(drawable);
if (partsys && mOpaqueDepthTex)
if (partsys)
{
mRequirements.back().mSoftParticles = true;
mRequirements.back().mSoftParticleSize = partsys->getDefaultParticleTemplate().getSizeRange().maximum;
@ -915,9 +973,9 @@ namespace Shader
mConvertAlphaTestToAlphaToCoverage = convert;
}
void ShaderVisitor::setOpaqueDepthTex(osg::ref_ptr<osg::Texture2D> texture)
void ShaderVisitor::setOpaqueDepthTex(osg::ref_ptr<osg::Texture2D> texturePing, osg::ref_ptr<osg::Texture2D> texturePong)
{
mOpaqueDepthTex = texture;
mOpaqueDepthTex = { texturePing, texturePong };
}
ReinstateRemovedStateVisitor::ReinstateRemovedStateVisitor(bool allowedToModifyStateSets)