Method init

tests/lua-tests/Source/lua_test_bindings.cpp:144–195

}

bool DrawNode3D::init()
{

    _blendFunc    = BlendFunc::ALPHA_PREMULTIPLIED;
    auto program  = backend::Program::getBuiltinProgram(backend::ProgramType::LINE_COLOR_3D);
    _programState = new backend::ProgramState(program);

    _locMVPMatrix = _programState->getUniformLocation("u_MVPMatrix");

#define INITIAL_VERTEX_BUFFER_LENGTH 512
    ensureCapacity(INITIAL_VERTEX_BUFFER_LENGTH);

    _customCommand.setDrawType(CustomCommand::DrawType::ARRAY);
    _customCommand.setPrimitiveType(CustomCommand::PrimitiveType::LINE);

    const auto& attributeInfo = _programState->getProgram()->getActiveAttributes();
    auto iter                 = attributeInfo.find("a_position");
    auto vertexLayout         = _programState->getMutableVertexLayout();
    if (iter != attributeInfo.end())
    {
        vertexLayout->setAttrib(iter->first, iter->second.location, backend::VertexFormat::FLOAT3, 0, false);
    }
    iter = attributeInfo.find("a_color");
    if (iter != attributeInfo.end())
    {
        vertexLayout->setAttrib(iter->first, iter->second.location, backend::VertexFormat::UBYTE4, sizeof(Vec3),
                                      true);
    }
    vertexLayout->setStride(sizeof(V3F_C4B));

    _customCommand.createVertexBuffer(sizeof(V3F_C4B), INITIAL_VERTEX_BUFFER_LENGTH,
                                      CustomCommand::BufferUsage::DYNAMIC);

    _customCommand.getPipelineDescriptor().programState = _programState;

    _dirty = true;

    _customCommand.setBeforeCallback(AX_CALLBACK_0(DrawNode3D::onBeforeDraw, this));
    _customCommand.setAfterCallback(AX_CALLBACK_0(DrawNode3D::onAfterDraw, this));

#if AX_ENABLE_CACHE_TEXTURE_DATA
    // Need to listen the event only when not use batchnode, because it will use VBO
    auto listener = EventListenerCustom::create(EVENT_COME_TO_FOREGROUND, [this](EventCustom* event) {
        /** listen the event that coming to foreground on Android */
        this->init();
    });

    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
#endif

    return true;
}

void DrawNode3D::draw(Renderer* renderer, const Mat4& transform, uint32_t flags)
{