Route render capture hooks through platform services

docs/modernization/build-inventory.md

@@ -447,8 +447,9 @@ Known local toolchain state:
 - `pp_platform_api` exposes the SDK-free `PlatformServices` interface for
   clipboard text, cursor visibility, virtual-keyboard visibility, external
   file display, file sharing, native app/window close, UI-thread lifecycle
-  hooks, render-context lifecycle hooks, per-frame platform hooks, picker
+  hooks, render-context lifecycle hooks, render-capture frame hooks, per-frame
-  callbacks, and prepared-file save/download handoff; Windows
+  platform hooks, picker callbacks, and prepared-file save/download handoff;
+  Windows
   live app execution now uses injected
   `WindowsPlatformServices` from
   `src/platform_windows/windows_platform_services.*` in `pp_platform_windows`,

docs/modernization/debt.md

@@ -35,7 +35,7 @@ agent or engineer to remove them without reconstructing context from chat.
 | DEBT-0014 | Open | Modernization | `windows-clangcl-asan` now configures as a headless Ninja/clang-cl preset and uses the release MSVC runtime required by ASan, but local builds still fail because installed clang-cl 18.1.8 is paired with VS 2026-preview STL headers that require Clang 20 or newer | Sanitizer validation should be local and repeatable, but this machine's compiler/header pairing is incompatible | `cmake --fresh --preset windows-clangcl-asan`; `cmake --build --preset windows-clangcl-asan --target pp_foundation` | Install/use Clang 20+ with the VS 2026 STL, or point the preset at a compatible VS 2022 toolchain, then make `platform-build.ps1 -Presets windows-clangcl-asan` pass for the headless matrix |
 | DEBT-0015 | Open | Modernization | Cursor visibility requests now consume pure `pp_app_core` planning through `pano_cli plan-cursor-visibility`, `App::show_cursor`/`App::hide_cursor` dispatch through `PlatformServices` without platform guards, and Windows live execution uses injected `WindowsPlatformServices`, but macOS cursor execution still reaches the retained fallback adapter | Keep canvas cursor behavior stable while platform shells are extracted incrementally | `pp_app_core_document_platform_io_tests`; `pano_cli plan-cursor-visibility --visible`; `ctest --preset desktop-fast --build-config Debug` | Cursor visibility execution is owned by injected `pp_platform_*` services for every supported platform |
 | DEBT-0016 | Open | Modernization | Clipboard get/set requests now consume pure `pp_app_core` planning through `pano_cli plan-clipboard-read` and `pano_cli plan-clipboard-write`, and Windows live execution uses injected `WindowsPlatformServices`, but Apple/Android clipboard execution still reaches retained fallback adapter branches from `App::clipboard_get_text` and `App::clipboard_set_text` | Keep picker/color text clipboard behavior stable while platform shells are extracted incrementally | `pp_app_core_document_platform_io_tests`; `pano_cli plan-clipboard-write --text #ff00aa`; `ctest --preset desktop-fast --build-config Debug` | Clipboard execution is owned by injected `pp_platform_*` services for every supported platform |
-| DEBT-0017 | Open | Modernization | `App::clipboard_get_text`, `App::clipboard_set_text`, `App::show_cursor`, `App::hide_cursor`, `App::showKeyboard`, `App::hideKeyboard`, `App::display_file`, `App::share_file`, native app/window close, UI-thread lifecycle hooks, render-context acquire/release/present hooks, per-frame platform hooks, `App::pick_image`, `App::pick_file`, the non-writer `App::pick_file_save`, `App::pick_dir`, and prepared-file save/download handoff now call the SDK-free `pp::platform::PlatformServices` interface, and Windows injects `WindowsPlatformServices` from `src/platform_windows/windows_platform_services.*`; non-Windows live implementations still use `src/platform_legacy/legacy_platform_services.*`, a named fallback adapter that forwards to retained Apple/Android/Linux/Web bridge functions and retained no-op branches | Preserve behavior while moving platform execution behind a testable service boundary before platform shell implementations are injected | `pp_platform_api_tests`; `pp_app_core_document_platform_io_tests`; `ctest --preset desktop-fast --build-config Debug`; `powershell -ExecutionPolicy Bypass -File scripts\automation\package-smoke.ps1 -Preset windows-msvc-default -Configuration Debug` | Replace `src/platform_legacy/legacy_platform_services.*` with injected `pp_platform_*` service implementations owned by each non-Windows platform shell |
+| DEBT-0017 | Open | Modernization | `App::clipboard_get_text`, `App::clipboard_set_text`, `App::show_cursor`, `App::hide_cursor`, `App::showKeyboard`, `App::hideKeyboard`, `App::display_file`, `App::share_file`, native app/window close, UI-thread lifecycle hooks, render-context acquire/release/present hooks, render-capture frame hooks, per-frame platform hooks, `App::pick_image`, `App::pick_file`, the non-writer `App::pick_file_save`, `App::pick_dir`, and prepared-file save/download handoff now call the SDK-free `pp::platform::PlatformServices` interface, and Windows injects `WindowsPlatformServices` from `src/platform_windows/windows_platform_services.*`; non-Windows live implementations still use `src/platform_legacy/legacy_platform_services.*`, a named fallback adapter that forwards to retained Apple/Android/Linux/Web bridge functions and retained no-op branches | Preserve behavior while moving platform execution behind a testable service boundary before platform shell implementations are injected | `pp_platform_api_tests`; `pp_app_core_document_platform_io_tests`; `ctest --preset desktop-fast --build-config Debug`; `powershell -ExecutionPolicy Bypass -File scripts\automation\package-smoke.ps1 -Preset windows-msvc-default -Configuration Debug` | Replace `src/platform_legacy/legacy_platform_services.*` with injected `pp_platform_*` service implementations owned by each non-Windows platform shell |
 
 ## Closed Debt
 

docs/modernization/roadmap.md

@@ -470,8 +470,9 @@ app-core clipboard text decisions used by live clipboard get/set requests
 before retained platform clipboard bridges continue.
 `pp_platform_api` now owns a headless `PlatformServices` interface for
 clipboard text, cursor visibility, virtual-keyboard visibility, UI-thread
-lifecycle hooks, render-context acquire/release/present hooks, external file
+lifecycle hooks, render-context acquire/release/present hooks, render-capture
-display, file sharing, image/file/save-file pickers, and directory pickers.
+frame hooks, external file display, file sharing, image/file/save-file
+pickers, and directory pickers.
 Windows installs an injected `WindowsPlatformServices` implementation from
 `src/platform_windows/windows_platform_services.*` in `pp_platform_windows`;
 other platforms still route through the debt-tracked legacy fallback adapter
@@ -500,6 +501,9 @@ The app's render context acquire/release/present path now dispatches through
 rebinding, and swap in `WindowsPlatformServices`; Apple, Android, Linux, and
 WebGL behavior is preserved behind the legacy adapter until their platform
 shells are injected.
+Windows RenderDoc frame capture hooks now also dispatch through
+`PlatformServices`, keeping capture integration in the platform service while
+leaving non-Windows adapters as no-ops.
 `pano_cli plan-cloud-upload` exposes the app-core cloud upload decision used by
 the live cloud upload command for missing-canvas, new-document warning, publish
 prompt, and dirty-document save-before-upload states before legacy UI, canvas,
@@ -1014,9 +1018,10 @@ Results:
   interface for clipboard read/write, empty clipboard writes, cursor
   visibility dispatch, virtual-keyboard visibility dispatch, external file
   display dispatch, file sharing dispatch, native app/window close dispatch,
-  UI-thread lifecycle dispatch, render-context lifecycle dispatch, per-frame
+  UI-thread lifecycle dispatch, render-context lifecycle dispatch,
-  platform hook dispatch, picker callback dispatch, and prepared-file
+  render-capture frame hook dispatch, per-frame platform hook dispatch, picker
-  save/download callback dispatch. The live Windows app now
+  callback dispatch, and prepared-file save/download callback dispatch. The
+  live Windows app now
   consumes this interface through an injected
   `WindowsPlatformServices` instance isolated in
   `src/platform_windows/windows_platform_services.*`; other platforms still

src/app.cpp

@@ -16,10 +16,7 @@
 #endif
 #include "settings.h"
 
-#ifdef _WIN32
+#ifdef __LINUX__
-void win32_renderdoc_frame_start();
-void win32_renderdoc_frame_end();
-#elif __LINUX__
 std::string linux_home_path();
 int mkpath(const std::string& dir, mode_t mode = DEFFILEMODE);
 #elif __WEB__
@@ -818,16 +815,12 @@ std::string App::res_to_string(int res)
 
 void App::renderdoc_frame_start()
 {
-#if __WIN__
+    begin_render_capture_frame();
-    win32_renderdoc_frame_start();
-#endif
 }
 
 void App::renderdoc_frame_end()
 {
-#if __WIN__
+    end_render_capture_frame();
-    win32_renderdoc_frame_end();
-#endif
 }
 
 void App::rec_clear()

src/app.h

@@ -195,6 +195,8 @@ public:
     void acquire_render_context();
     void release_render_context();
     void present_render_context();
+    void begin_render_capture_frame();
+    void end_render_capture_frame();
     void update_platform_frame(float delta_time_seconds);
     void report_rendered_frames(int frames);
     void save_prepared_file(

src/app_events.cpp

@@ -244,6 +244,16 @@ void App::present_render_context()
     active_platform_services().present_render_context();
 }
 
+void App::begin_render_capture_frame()
+{
+    active_platform_services().begin_render_capture_frame();
+}
+
+void App::end_render_capture_frame()
+{
+    active_platform_services().end_render_capture_frame();
+}
+
 void App::update_platform_frame(float delta_time_seconds)
 {
     active_platform_services().update_platform_frame(delta_time_seconds);

src/platform_api/platform_services.h

@@ -23,6 +23,8 @@ public:
     virtual void acquire_render_context() = 0;
     virtual void release_render_context() = 0;
     virtual void present_render_context() = 0;
+    virtual void begin_render_capture_frame() = 0;
+    virtual void end_render_capture_frame() = 0;
     virtual void update_platform_frame(float delta_time_seconds) = 0;
     virtual void report_rendered_frames(int frames) = 0;
     virtual void display_file(std::string_view path) = 0;

src/platform_legacy/legacy_platform_services.cpp

@@ -144,6 +144,14 @@ public:
 #endif
     }
 
+    void begin_render_capture_frame() override
+    {
+    }
+
+    void end_render_capture_frame() override
+    {
+    }
+
     void update_platform_frame(float delta_time_seconds) override
     {
         (void)delta_time_seconds;

src/platform_windows/windows_platform_services.cpp

@@ -13,6 +13,8 @@ void destroy_window();
 void async_lock();
 void async_unlock();
 void win32_async_swap();
+void win32_renderdoc_frame_start();
+void win32_renderdoc_frame_end();
 void win32_update_fps(int frames);
 void win32_update_stylus(float dt);
 
@@ -201,6 +203,16 @@ public:
         win32_async_swap();
     }
 
+    void begin_render_capture_frame() override
+    {
+        win32_renderdoc_frame_start();
+    }
+
+    void end_render_capture_frame() override
+    {
+        win32_renderdoc_frame_end();
+    }
+
     void update_platform_frame(float delta_time_seconds) override
     {
         win32_update_stylus(delta_time_seconds);

tests/platform_api/platform_services_tests.cpp

@@ -65,6 +65,16 @@ public:
         ++render_context_presents;
     }
 
+    void begin_render_capture_frame() override
+    {
+        ++render_capture_begins;
+    }
+
+    void end_render_capture_frame() override
+    {
+        ++render_capture_ends;
+    }
+
     void update_platform_frame(float delta_time_seconds) override
     {
         ++platform_frame_updates;
@@ -140,6 +150,8 @@ public:
     int render_context_acquires = 0;
     int render_context_releases = 0;
     int render_context_presents = 0;
+    int render_capture_begins = 0;
+    int render_capture_ends = 0;
     int platform_frame_updates = 0;
     int frame_reports = 0;
     int display_file_requests = 0;
@@ -233,6 +245,18 @@ void platform_services_dispatch_render_context_lifecycle(pp::tests::Harness& har
     PP_EXPECT(harness, fake.render_context_releases == 1);
 }
 
+void platform_services_dispatch_render_capture_hooks(pp::tests::Harness& harness)
+{
+    FakePlatformServices fake("unused");
+    pp::platform::PlatformServices& services = fake;
+
+    services.begin_render_capture_frame();
+    services.end_render_capture_frame();
+
+    PP_EXPECT(harness, fake.render_capture_begins == 1);
+    PP_EXPECT(harness, fake.render_capture_ends == 1);
+}
+
 void platform_services_dispatch_frame_hooks(pp::tests::Harness& harness)
 {
     FakePlatformServices fake("unused");
@@ -321,6 +345,7 @@ int main()
     harness.run("platform services dispatch visibility updates", platform_services_dispatch_visibility_updates);
     harness.run("platform services dispatch UI thread lifecycle", platform_services_dispatch_ui_thread_lifecycle);
     harness.run("platform services dispatch render context lifecycle", platform_services_dispatch_render_context_lifecycle);
+    harness.run("platform services dispatch render capture hooks", platform_services_dispatch_render_capture_hooks);
     harness.run("platform services dispatch frame hooks", platform_services_dispatch_frame_hooks);
     harness.run("platform services dispatch file actions", platform_services_dispatch_file_actions);
     harness.run("platform services dispatch picker callbacks", platform_services_dispatch_picker_callbacks);