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Add support for rendering particles to the glow buffer

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This commit is contained in:
LukasPJ 2014-11-28 23:34:26 +01:00
parent c08413ffde
commit 30a8401d14
11 changed files with 179 additions and 63 deletions
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121
Engine/source/renderInstance/renderParticleMgr.cpp
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@ -399,64 +399,7 @@ void RenderParticleMgr::renderInstance(ParticleRenderInst *ri, SceneRenderState
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mModelViewProjSC, *ri->modelViewProj );
}
// We want to turn everything into variation on a pre-multiplied alpha blend
F32 alphaFactor = 0.0f, alphaScale = 1.0f;
switch(ri->blendStyle)
{
// SrcAlpha, InvSrcAlpha
case ParticleRenderInst::BlendNormal:
alphaFactor = 1.0f;
break;
// SrcAlpha, One
case ParticleRenderInst::BlendAdditive:
alphaFactor = 1.0f;
alphaScale = 0.0f;
break;
// SrcColor, One
case ParticleRenderInst::BlendGreyscale:
alphaFactor = -1.0f;
alphaScale = 0.0f;
break;
}
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mAlphaFactorSC, alphaFactor );
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mAlphaScaleSC, alphaScale );
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mFSModelViewProjSC, *ri->modelViewProj );
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mOneOverFarSC, 1.0f / state->getFarPlane() );
if ( mParticleShaderConsts.mOneOverSoftnessSC->isValid() )
{
F32 oneOverSoftness = 1.0f;
if ( ri->softnessDistance > 0.0f )
oneOverSoftness = 1.0f / ( ri->softnessDistance / state->getFarPlane() );
mParticleShaderConsts.mShaderConsts->set( mParticleShaderConsts.mOneOverSoftnessSC, oneOverSoftness );
}
GFX->setShader( mParticleShader );
GFX->setShaderConstBuffer( mParticleShaderConsts.mShaderConsts );
GFX->setTexture( 0, ri->diffuseTex );
// Set up the prepass texture.
if ( mParticleShaderConsts.mPrePassTargetParamsSC->isValid() )
{
GFXTextureObject *texObject = mPrepassTarget ? mPrepassTarget->getTexture(0) : NULL;
GFX->setTexture( 1, texObject );
Point4F rtParams( 0.0f, 0.0f, 1.0f, 1.0f );
if ( texObject )
ScreenSpace::RenderTargetParameters(texObject->getSize(), mPrepassTarget->getViewport(), rtParams);
mParticleShaderConsts.mShaderConsts->set( mParticleShaderConsts.mPrePassTargetParamsSC, rtParams );
}
GFX->setPrimitiveBuffer( *ri->primBuff );
GFX->setVertexBuffer( *ri->vertBuff );
GFX->drawIndexedPrimitive( GFXTriangleList, 0, 0, ri->count * 4, 0, ri->count * 2 );
renderParticle(ri, state);
}
else if(ri->systemState == PSS_AwaitingCompositeDraw)
{
@ -530,6 +473,68 @@ void RenderParticleMgr::renderInstance(ParticleRenderInst *ri, SceneRenderState
}
}
void RenderParticleMgr::renderParticle(ParticleRenderInst* ri, SceneRenderState* state)
{
// We want to turn everything into variation on a pre-multiplied alpha blend
F32 alphaFactor = 0.0f, alphaScale = 1.0f;
switch(ri->blendStyle)
{
// SrcAlpha, InvSrcAlpha
case ParticleRenderInst::BlendNormal:
alphaFactor = 1.0f;
break;
// SrcAlpha, One
case ParticleRenderInst::BlendAdditive:
alphaFactor = 1.0f;
alphaScale = 0.0f;
break;
// SrcColor, One
case ParticleRenderInst::BlendGreyscale:
alphaFactor = -1.0f;
alphaScale = 0.0f;
break;
}
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mAlphaFactorSC, alphaFactor );
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mAlphaScaleSC, alphaScale );
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mFSModelViewProjSC, *ri->modelViewProj );
mParticleShaderConsts.mShaderConsts->setSafe( mParticleShaderConsts.mOneOverFarSC, 1.0f / state->getFarPlane() );
if ( mParticleShaderConsts.mOneOverSoftnessSC->isValid() )
{
F32 oneOverSoftness = 1.0f;
if ( ri->softnessDistance > 0.0f )
oneOverSoftness = 1.0f / ( ri->softnessDistance / state->getFarPlane() );
mParticleShaderConsts.mShaderConsts->set( mParticleShaderConsts.mOneOverSoftnessSC, oneOverSoftness );
}
GFX->setShader( mParticleShader );
GFX->setShaderConstBuffer( mParticleShaderConsts.mShaderConsts );
GFX->setTexture( 0, ri->diffuseTex );
// Set up the prepass texture.
if ( mParticleShaderConsts.mPrePassTargetParamsSC->isValid() )
{
GFXTextureObject *texObject = mPrepassTarget ? mPrepassTarget->getTexture(0) : NULL;
GFX->setTexture( 1, texObject );
Point4F rtParams( 0.0f, 0.0f, 1.0f, 1.0f );
if ( texObject )
ScreenSpace::RenderTargetParameters(texObject->getSize(), mPrepassTarget->getViewport(), rtParams);
mParticleShaderConsts.mShaderConsts->set( mParticleShaderConsts.mPrePassTargetParamsSC, rtParams );
}
GFX->setPrimitiveBuffer( *ri->primBuff );
GFX->setVertexBuffer( *ri->vertBuff );
GFX->drawIndexedPrimitive( GFXTriangleList, 0, 0, ri->count * 4, 0, ri->count * 2 );
}
bool RenderParticleMgr::_initShader()
{
ShaderData *shaderData = NULL;