Method on_draw

apps/editor/editor-app.cpp:359–855

}

void scene_editor_app::on_draw()
{
    glfwMakeContextCurrent(window);

    glEnable(GL_CULL_FACE);
    glEnable(GL_DEPTH_TEST);

    int width, height;
    glfwGetWindowSize(window, &width, &height);

    glViewport(0, 0, width, height);
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

    polymer::global_debug_mesh_manager::get()->upload();
    polymer::global_debug_mesh_manager::get()->clear();

    const float4x4 projectionMatrix = cam.get_projection_matrix(float(width) / float(height));
    const float4x4 viewMatrix = cam.get_view_matrix();
    const float4x4 viewProjectionMatrix = (projectionMatrix * viewMatrix);

    {
        editorProfiler.begin("gather-scene");

        // Clear out transient scene payload data
        renderer_payload.reset();

        // Lambda to assemble render component from base_object
        auto assemble_render_component = [](base_object & obj) {
            render_component r;
            r.material = obj.get_component<material_component>();
            r.mesh = obj.get_component<mesh_component>();
            if (auto * xform = obj.get_component<transform_component>())
            {
                r.world_matrix = xform->get_world_transform().matrix() * make_scaling_matrix(xform->local_scale);
            }
            r.render_sort_order = 0;
            return r;
        };

        // Iterate all objects in the scene graph
        for (auto & [e, obj] : the_scene.get_graph().graph_objects)
        {
            // Does the entity have a material? If so, we can render it.
            if (auto * mat_c = obj.get_component<material_component>())
            {
                auto * mesh_c = obj.get_component<mesh_component>();
                if (!mesh_c) continue; // for the case that we just created a material component and haven't set a mesh yet

                render_component r = assemble_render_component(obj);
                renderer_payload.render_components.push_back(r);
            }

            // IBL cubemap
            if (auto * cubemap = obj.get_component<ibl_component>())