Method Pick

trinity/Tr2DebugRenderer.cpp:745–826

}

void Tr2DebugRenderer::Pick( EvePendingPickingReadback& readback, bool synchronize, Tr2RenderContext& renderContext )
{
	auto shader = m_pickingEffect->GetShaderStateInterface();
	if( !shader )
	{
		return;
	}
	if( m_objectLineOffsets.empty() && m_objectTriangleOffsets.empty() )
	{
		return;
	}

	Tr2PickBuffer& pickBuffer = readback.m_debugPickBuffer;
	pickBuffer.SetClearColor( 0 );
	pickBuffer.PrepareResources();

	if( !pickBuffer.BeginRendering( 0.f, renderContext ) )
	{
		return;
	}

	auto handle = GetVertexDeclarationHandle( renderContext );

	shader->ApplyAllStateForPass( 0, 0, renderContext );
	m_pickingEffect->ApplyMaterialDataForPass( 0, 0, renderContext );
	renderContext.m_esm.ApplyVertexDeclaration( handle );

	if( !m_objectLineOffsets.empty() )
	{

		std::vector<Tr2DebugObjectReference>& lineObjects = readback.m_debugLineObjects;
		lineObjects.reserve( m_objectLineOffsets.size() );

		renderContext.SetTopology( Tr2RenderContextEnum::TOP_LINES );

		for( size_t i = 0; i < m_objectLineOffsets.size(); ++i )
		{
			auto object = m_objectLineOffsets[i].first;

			lineObjects.push_back( object );

			if( !object )
			{
				continue;
			}
			auto begin = m_objectLineOffsets[i].second;
			auto end = i + 1 < m_objectLineOffsets.size() ? m_objectLineOffsets[i + 1].second : m_lines.size();
			renderContext.DrawPrimitiveUP( uint32_t( ( end - begin ) / 2 ), &m_lines[begin], uint32_t( sizeof( Vertex ) ) );
		}
	}

	if( !m_objectTriangleOffsets.empty() )
	{

		std::vector<Tr2DebugObjectReference>& triangleObjects = readback.m_debugTriangleObjects;
		triangleObjects.reserve( m_objectTriangleOffsets.size() );

		renderContext.SetTopology( Tr2RenderContextEnum::TOP_TRIANGLES );