{"id":"frontend.yui--PresentYuiCanvasFlatDisplayList","name":"PresentYuiCanvasFlatDisplayList","owner":"yeho","package":"frontend.yui","kind":"function","signature":"external PresentYuiCanvasFlatDisplayList(yuiDisplayList original displayList, yuiCompositionPlan original composition) returns bool","description":"Allocation-free hot path for an already-validated opaque direct-window display list containing identity-space clear/rect/roundedRect/text/glyph and immutable whole-source image primitives. Product frame loops validate once when they build composition, then use this path without rebuilding general transform, clip, sampling-policy, or telemetry state.","context":"Turn YUI models into a working frontend and its rendering/input adapters.","parameters":[{"name":"displayList","type":"yuiDisplayList original","description":"Supply display list as yuiDisplayList original."},{"name":"composition","type":"yuiCompositionPlan original","description":"Supply composition as yuiCompositionPlan original."}],"returns":"bool","members":[],"tags":["cpu","frontend","frontend.yui","function","source-example","yeho","yui"],"updated":"2026-09-09","source":{"repository":"yeho","path":"packages/frontend/yui/render-canvas.yh","line":1546,"sha256":"b6291b4ad0d986d765fd486b8297e2315f14925fcce734a30c0046bbfa882b91"},"status":"source-declared","notes":["Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup."],"examples":[{"id":"usage","title":"Use PresentYuiCanvasFlatDisplayList","description":"A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.","code":"using frontend.yui\n\n// Turn YUI models into a working frontend and its rendering/input adapters.\nyuiDisplayList displayList = yuiDisplayList(\"surface Id\")\nyuiCompositionPlan composition = yuiCompositionPlan(\"surface Id\")\nbool result = PresentYuiCanvasFlatDisplayList(displayList, composition)\nConsole.Log(Text.From(result))\n","manifest":"manifestVersion = \"2\"\npackage = \"api.example.frontend_yui__presentyuicanvasflatdisplaylist\"\nversion = \"0.1.0\"\nlanguageEdition = \"yeho-core-2026.1\"\n\n[app]\nkind = \"headless\"\n\n[[dependencies]]\npackage = \"frontend.yui\"\nversion = \"0.2.0\"\npath = \"../../../yeho/packages/frontend/yui\"\n\n[[dependencies]]\npackage = \"graphics.canvas\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/graphics/canvas\"\n\n[[dependencies]]\npackage = \"graphics.image\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/graphics/image\"\n\n[[dependencies]]\npackage = \"graphics.image.processing\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/graphics/image/processing\"\n\n[[dependencies]]\npackage = \"graphics.text\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/graphics/text\"\n\n[[dependencies]]\npackage = \"host.ui_services\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/host/ui_services\"\n\n[[dependencies]]\npackage = \"input.text\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/input/text\"\n\n[[dependencies]]\npackage = \"ui\"\nversion = \"0.2.0\"\npath = \"../../../yeho/packages/ui\"\n","tags":["cpu","source-example"],"verification":"type checked","run":"cpu-oracle","sha256":"67ec8eb2d9e844d6e9b1458c039c8eacad86c52e9ea31d12017d55f3e3f96d23","checked":"2026-09-09","diagnostic":"","observedOutput":null,"checkedBackend":null}],"searchTerms":[],"url":"https://demonhunterlabs.com/academy/api?item=frontend.yui--PresentYuiCanvasFlatDisplayList","json":"https://demonhunterlabs.com/reference/items/frontend.yui--PresentYuiCanvasFlatDisplayList.json","markdown":"https://demonhunterlabs.com/reference/text/frontend.yui--PresentYuiCanvasFlatDisplayList.md"}