Class RenderFixture

test/Entity.cpp:331–365

Collection of objects needed for rendering. Since not all tests require rendering, these objects are in an auxiliary fixture created when needed rather than part of the EntityTest fixture used by every test. This class also implements scene::NodeVisitor enabling it to visit trees of nodes for rendering.

    // also implements scene::NodeVisitor enabling it to visit trees of nodes
    // for rendering.
    struct RenderFixture: public scene::NodeVisitor
    {
        RenderSystemPtr backend = GlobalRenderSystemFactory().createRenderSystem();
        render::NopVolumeTest volumeTest;
        TestRenderableCollector collector;

        // Keep track of nodes visited
        int nodesVisited = 0;

        // Construct
        RenderFixture(bool solid = false) :
            collector(solid)
        {}

        // Convenience method to set render backend and traverse a node and its
        // children for rendering
        void renderSubGraph(const scene::INodePtr& node)
        {
            node->setRenderSystem(backend);
            node->traverse(*this);
        }

        // NodeVisitor implementation
        bool pre(const scene::INodePtr& node) override
        {
            // Count the node itself
            ++nodesVisited;

            // Render the node in appropriate mode
            node->onPreRender(volumeTest);

            // Continue traversing
            return true;
        }
    };
}

TEST_F(EntityTest, LightLocalToWorldFromOrigin)