void My_TestGLDrawing::InitTest() { _renderIndex = HdRenderIndex::New(&_renderDelegate); TF_VERIFY(_renderIndex != nullptr); _delegate.reset(new Hdx_UnitTestDelegate(_renderIndex)); // prepare render task SdfPath renderSetupTask("/renderSetupTask"); SdfPath renderTask("/renderTask"); SdfPath selectionTask("/selectionTask"); _delegate->AddRenderSetupTask(renderSetupTask); _delegate->AddRenderTask(renderTask); _delegate->AddSelectionTask(selectionTask); // render task parameters. VtValue vParam = _delegate->GetTaskParam(renderSetupTask, HdTokens->params); HdxRenderTaskParams param = vParam.Get<HdxRenderTaskParams>(); param.enableLighting = true; // use default lighting _delegate->SetTaskParam(renderSetupTask, HdTokens->params, VtValue(param)); _delegate->SetTaskParam(renderTask, HdTokens->collection, VtValue(HdRprimCollection(HdTokens->geometry, HdReprSelector(HdReprTokens->hull)))); HdxSelectionTaskParams selParam; selParam.enableSelection = true; selParam.selectionColor = GfVec4f(1, 1, 0, 1); selParam.locateColor = GfVec4f(1, 0, 1, 1); _delegate->SetTaskParam(selectionTask, HdTokens->params, VtValue(selParam)); // prepare scene _InitScene(); SetCameraTranslate(GfVec3f(0, 0, -20)); // picking related init _pickablesCol = HdRprimCollection(_tokens->pickables, HdReprSelector(HdReprTokens->hull)); _marquee.InitGLResources(); _picker.InitIntersector(_renderIndex); _SetPickParams(); // We have to unfortunately explictly add collections besides 'geometry' // See HdRenderIndex constructor. _delegate->GetRenderIndex().GetChangeTracker().AddCollection(_tokens->pickables); // XXX: Setup a VAO, the current drawing engine will not yet do this. glGenVertexArrays(1, &vao); glBindVertexArray(vao); glBindVertexArray(0); }