void iLight::UpdateLight(float afTimeStep)
{
/////////////////////////////////////////////
// Fade
if(mfFadeTime>0)
{
//Log("Fading: %f / %f\n",afTimeStep,mfFadeTime);
mfFarAttenuation += mfRadiusAdd*afTimeStep;
mDiffuseColor.r += mColAdd.r*afTimeStep;
mDiffuseColor.g += mColAdd.g*afTimeStep;
mDiffuseColor.b += mColAdd.b*afTimeStep;
mDiffuseColor.a += mColAdd.a*afTimeStep;
SetDiffuseColor(mDiffuseColor);
mfFadeTime-=afTimeStep;
//Set the dest values.
if(mfFadeTime<=0)
{
mfFadeTime =0;
SetDiffuseColor(mDestCol);
mfFarAttenuation = mfDestRadius;
}
}
/////////////////////////////////////////////
// Flickering
if(mbFlickering && mfFadeTime<=0)
{
//////////////////////
//On
if(mbFlickerOn)
{
if(mfFlickerTime >= mfFlickerStateLength)
{
mbFlickerOn = false;
if(!mbFlickerFade)
{
SetDiffuseColor(mFlickerOffColor);
mfFarAttenuation = mfFlickerOffRadius;
}
else
{
FadeTo(mFlickerOffColor,mfFlickerOffRadius,mfFlickerOffFadeLength);
}
//Sound
if(msFlickerOffSound!=""){
cSoundEntity *pSound = mpWorld3D->CreateSoundEntity("FlickerOff",
msFlickerOffSound,true);
if(pSound) pSound->SetPosition(GetLightPosition());
}
OnFlickerOff();
mfFlickerTime =0;
mfFlickerStateLength = cMath::RandRectf(mfFlickerOffMinLength,mfFlickerOffMaxLength);
}
}
//////////////////////
//Off
else
{
if(mfFlickerTime >= mfFlickerStateLength)
{
mbFlickerOn = true;
if(!mbFlickerFade)
{
SetDiffuseColor(mFlickerOnColor);
mfFarAttenuation = mfFlickerOnRadius;
}
else
{
FadeTo(mFlickerOnColor,mfFlickerOnRadius,mfFlickerOnFadeLength);
}
if(msFlickerOnSound!=""){
cSoundEntity *pSound = mpWorld3D->CreateSoundEntity("FlickerOn",
msFlickerOnSound,true);
if(pSound) pSound->SetPosition(GetLightPosition());
}
OnFlickerOn();
mfFlickerTime =0;
mfFlickerStateLength = cMath::RandRectf(mfFlickerOnMinLength,mfFlickerOnMaxLength);
}
}
mfFlickerTime += afTimeStep;
}
/*Log("Time: %f Length: %f FadeTime: %f Color: (%f %f %f %f)\n",mfFlickerTime, mfFlickerStateLength,
mfFadeTime,
mDiffuseColor.r,mDiffuseColor.g,
mDiffuseColor.b,mDiffuseColor.a);*/
}
void CGodRaysEffect::Render( int x, int y, int w, int h )
{
CMatRenderContextPtr pRenderContext( materials );
// Save off the current render target and put the occlusion
// mask on the top of the rt stack.
pRenderContext->PushRenderTargetAndViewport( m_OcclusionMask );
// Create the god rays rendering view.
CViewRender* pViewRender = CViewRender::GetMainView();
CRefPtr<CGodRaysView> pGodRaysView = new CGodRaysView( pViewRender );
// Set the sun instance.
pGodRaysView->m_pSun = m_pSun;
// Draw the occlusion mask.
pViewRender->AddViewToScene( pGodRaysView );
// Restore original render targets.
pRenderContext->PopRenderTargetAndViewport();
// Now, downsample the occlusion mask. Start by setting the quarter
// sized render target as the texture to render to.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT0 );
// Get the dimensions of the god rays texture.
ITexture* pMaskTexture = m_OcclusionMask;
const int nSrcWidth = pMaskTexture->GetActualWidth();
const int nSrcHeight = pMaskTexture->GetActualHeight();
const int nQtrWidth = nSrcWidth / 4;
const int nQtrHeight = nSrcHeight / 4;
// Blit the data from the occlusion mask texture to the quarter sized one
// and use the downsample shader to do it with.
pRenderContext->DrawScreenSpaceRectangle(
m_DownsampleMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nSrcWidth - 2, nSrcHeight - 2,
nSrcWidth, nSrcHeight );
// Restore the original render target.
pRenderContext->PopRenderTargetAndViewport();
Vector vLightPos;
GetLightPosition( vLightPos );
if( SetMaterialParms( vLightPos ) )
{
// Apply godrays on _rt_SmallFB0 -> _rt_SmallFB1.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT1 );
pRenderContext->DrawScreenSpaceRectangle(
m_GodRaysMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nQtrWidth - 2, nQtrHeight - 2,
nQtrWidth, nQtrHeight );
pRenderContext->PopRenderTargetAndViewport();
// Now blur _rt_SmallFB1 -> _rt_SmallFB0.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT0 );
pRenderContext->DrawScreenSpaceRectangle(
m_BlurYMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nQtrWidth - 2, nQtrHeight - 2,
nQtrWidth, nQtrHeight );
pRenderContext->PopRenderTargetAndViewport();
// Now blur _rt_SmallFB0 -> _rt_SmallFB1.
pRenderContext->PushRenderTargetAndViewport( m_SmallRT1 );
pRenderContext->DrawScreenSpaceRectangle(
m_BlurXMaterial,
0, 0,
nQtrWidth, nQtrHeight,
0, 0,
nQtrWidth - 2, nQtrHeight - 2,
nQtrWidth, nQtrHeight );
// Restore old render target and viewport.
pRenderContext->PopRenderTargetAndViewport();
// This forces the framebuffer to update with the latest scene.
UpdateScreenEffectTexture( 0, x, y, w, h, true );
// Now combine the godrays results with the main frame buffer.
pRenderContext->DrawScreenSpaceQuad( m_GodRaysCombineMaterial );
}
// Release the render context.
pRenderContext->Release();
}