Method UpdateGpuEmitterParams

trinity/Particle/Tr2GpuParticleSystem.cpp:538–555

-------------------------------------------------------------------------------------- Description: Updates GPU buffer with persistent emitter parameters. --------------------------------------------------------------------------------------

//   Updates GPU buffer with persistent emitter parameters.
// --------------------------------------------------------------------------------------
void Tr2GpuParticleSystem::UpdateGpuEmitterParams( Tr2RenderContext& renderContext )
{
	if( !m_emitterParamsBuffer->IsValid() || m_emitterParamsBuffer->GetCount() < m_emitterParams.size() )
	{
		m_emitterParamsBuffer->Create( std::max( 64u, uint32_t( m_emitterParams.size() ) ), sizeof( EmitterParamsGpu ), Tr2GpuStructuredBuffer::CPU_WRITABLE );
	}

	if( m_emitterParams.size() == 0 )
	{
		return;
	}

	if( !m_emitterParamsBuffer->IsValid() )
	{
		return;
	}
	m_emitterParamsBuffer->GetGpuBuffer( 0 )->UpdateBuffer( 0, uint32_t( m_emitterParams.size() * sizeof( m_emitterParams[0] ) ), &m_emitterParams[0], renderContext );
}

// --------------------------------------------------------------------------------------
// Description: