Method RunQuery

trinity/Eve/EveOccluder.cpp:150–185

-------------------------------------------------------------------------------- Description: Performs two render calls with different states: with and without depth-test to get the visibility. WARNING: a query might not return a value immediatly, if it still "runs", don't do anything and wait until it finishes Arguments: renderContext - current render context frustum - the current view frustum of

//   transform - parent transform of the lensflare to turn this into a 2d sprite
// --------------------------------------------------------------------------------
void EveOccluder::RunQuery( Tr2RenderContext& renderContext, const EveUpdateContext& updateContext, const Matrix& transform, uint32_t bufferOffset, float fogWeight )
{
	// visible?
	if( !m_display )
	{
		return;
	}

	GlobalStore().RegisterVariable( "OcclusionBufferOffset", *reinterpret_cast<float*>( &bufferOffset ) );
	GlobalStore().RegisterVariable( "OcclusionFogWeight", fogWeight );

	// prepare batches for rendering
	renderContext.m_esm.ApplyStandardStates( Tr2EffectStateManager::RM_OPAQUE );
	// collect renderables from sprite, so we can pass the parent transform and EveTransform handles
	// all of the view update for us
	std::vector<ITr2Renderable*> renderables;
	EveUpdateContext dummyContext;
	for( auto& sprite : m_sprites )
	{
		sprite->UpdateSyncronous( dummyContext );
		sprite->UpdateVisibility( updateContext, transform );
		sprite->GetRenderables( renderables, nullptr );
	}
	// collect batches from renderables (only from decal area, nothing else is important for
	// occlusion queries)
	for( auto& renderable : renderables )
	{
		Tr2PerObjectData* objectData = renderable->GetPerObjectData( m_batches.get() );
		renderable->GetBatches( m_batches.get(), TRIBATCHTYPE_OPAQUE, objectData );
	}
	m_batches->Finalize();

	renderContext.RenderBatches( m_batches.get() );
	// cleanup
	m_batches->Clear();
}