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Move tracking of renderables from FlRenderer to FlEngine (#165848)

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Motivated by work on refactoring FlRenderer to FlCompositor.
This commit is contained in:
Robert Ancell
2025-03-26 16:24:36 +13:00
committed by GitHub
parent 97167ed5a6
commit b39232e610
7 changed files with 91 additions and 98 deletions
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34
engine/src/flutter/shell/platform/linux/fl_engine.cc
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@@ -8,6 +8,7 @@
#include <cstring>
#include "flutter/common/constants.h"
#include "flutter/shell/platform/common/engine_switches.h"
#include "flutter/shell/platform/embedder/embedder.h"
#include "flutter/shell/platform/linux/fl_binary_messenger_private.h"
@@ -93,6 +94,9 @@ struct _FlEngine {
// Next ID to use for a view.
FlutterViewId next_view_id;
// Objects rendering the views.
GHashTable* renderables_by_view_id;
// Function to call when a platform message is received.
FlEnginePlatformMessageHandler platform_message_handler;
gpointer platform_message_handler_data;
@@ -489,6 +493,7 @@ static void fl_engine_dispose(GObject* object) {
g_clear_object(&self->keyboard_handler);
g_clear_object(&self->mouse_cursor_handler);
g_clear_object(&self->task_runner);
g_clear_pointer(&self->renderables_by_view_id, g_hash_table_unref);
if (self->platform_message_handler_destroy_notify) {
self->platform_message_handler_destroy_notify(
@@ -534,6 +539,12 @@ static void fl_engine_init(FlEngine* self) {
// Implicit view is 0, so start at 1.
self->next_view_id = 1;
self->renderables_by_view_id = g_hash_table_new_full(
g_direct_hash, g_direct_equal, nullptr, [](gpointer value) {
GWeakRef* ref = static_cast<GWeakRef*>(value);
g_weak_ref_clear(ref);
free(ref);
});
self->texture_registrar = fl_texture_registrar_new(self);
}
@@ -734,7 +745,15 @@ void fl_engine_notify_display_update(FlEngine* self,
}
}
void fl_engine_set_implicit_view(FlEngine* self, FlRenderable* renderable) {
GWeakRef* ref = g_new(GWeakRef, 1);
g_weak_ref_init(ref, G_OBJECT(renderable));
g_hash_table_insert(self->renderables_by_view_id,
GINT_TO_POINTER(flutter::kFlutterImplicitViewId), ref);
}
FlutterViewId fl_engine_add_view(FlEngine* self,
FlRenderable* renderable,
size_t width,
size_t height,
double pixel_ratio,
@@ -748,6 +767,11 @@ FlutterViewId fl_engine_add_view(FlEngine* self,
FlutterViewId view_id = self->next_view_id;
self->next_view_id++;
GWeakRef* ref = g_new(GWeakRef, 1);
g_weak_ref_init(ref, G_OBJECT(renderable));
g_hash_table_insert(self->renderables_by_view_id, GINT_TO_POINTER(view_id),
ref);
// We don't know which display this view will open on, so set to zero and this
// will be updated in a following FlutterWindowMetricsEvent
FlutterEngineDisplayId display_id = 0;
@@ -784,6 +808,14 @@ gboolean fl_engine_add_view_finish(FlEngine* self,
return g_task_propagate_boolean(G_TASK(result), error);
}
FlRenderable* fl_engine_get_renderable(FlEngine* self, FlutterViewId view_id) {
g_return_val_if_fail(FL_IS_ENGINE(self), nullptr);
GWeakRef* ref = static_cast<GWeakRef*>(g_hash_table_lookup(
self->renderables_by_view_id, GINT_TO_POINTER(view_id)));
return FL_RENDERABLE(g_weak_ref_get(ref));
}
void fl_engine_remove_view(FlEngine* self,
FlutterViewId view_id,
GCancellable* cancellable,
@@ -791,6 +823,8 @@ void fl_engine_remove_view(FlEngine* self,
gpointer user_data) {
g_return_if_fail(FL_IS_ENGINE(self));
g_hash_table_remove(self->renderables_by_view_id, GINT_TO_POINTER(view_id));
g_autoptr(GTask) task = g_task_new(self, cancellable, callback, user_data);
FlutterRemoveViewInfo info;

24
engine/src/flutter/shell/platform/linux/fl_engine_private.h
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@@ -11,6 +11,7 @@
#include "flutter/shell/platform/linux/fl_display_monitor.h"
#include "flutter/shell/platform/linux/fl_keyboard_manager.h"
#include "flutter/shell/platform/linux/fl_mouse_cursor_handler.h"
#include "flutter/shell/platform/linux/fl_renderable.h"
#include "flutter/shell/platform/linux/fl_renderer.h"
#include "flutter/shell/platform/linux/fl_task_runner.h"
#include "flutter/shell/platform/linux/fl_text_input_handler.h"
@@ -127,9 +128,19 @@ void fl_engine_notify_display_update(FlEngine* engine,
const FlutterEngineDisplay* displays,
size_t displays_length);
/**
* fl_engine_set_implicit_view:
* @engine: an #FlEngine.
* @renderable: the object that will render the implicit view.
*
* Sets the object to render the implicit view.
*/
void fl_engine_set_implicit_view(FlEngine* engine, FlRenderable* renderable);
/**
* fl_engine_add_view:
* @engine: an #FlEngine.
* @renderable: the object that will render this view.
* @width: width of view in pixels.
* @height: height of view in pixels.
* @pixel_ratio: scale factor for view.
@@ -144,6 +155,7 @@ void fl_engine_notify_display_update(FlEngine* engine,
* Returns: the ID for the view.
*/
FlutterViewId fl_engine_add_view(FlEngine* engine,
FlRenderable* renderable,
size_t width,
size_t height,
double pixel_ratio,
@@ -166,6 +178,18 @@ gboolean fl_engine_add_view_finish(FlEngine* engine,
GAsyncResult* result,
GError** error);
/**
* fl_engine_get_renderable:
* @engine: an #FlEngine.
* @view_id: ID to check.
*
* Gets the renderable associated with the give view ID.
*
* Returns: (transfer full): a reference to an #FlRenderable or %NULL if none
* for this ID.
*/
FlRenderable* fl_engine_get_renderable(FlEngine* engine, FlutterViewId view_id);
/**
* fl_engine_remove_view:
* @engine: an #FlEngine.

17
engine/src/flutter/shell/platform/linux/fl_engine_test.cc
View File

@@ -10,6 +10,7 @@
#include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h"
#include "flutter/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h"
#include "flutter/shell/platform/linux/public/flutter_linux/fl_string_codec.h"
#include "flutter/shell/platform/linux/testing/mock_renderer.h"
// MOCK_ENGINE_PROC is leaky by design
// NOLINTBEGIN(clang-analyzer-core.StackAddressEscape)
@@ -651,8 +652,10 @@ TEST(FlEngineTest, AddView) {
return kSuccess;
}));
g_autoptr(FlMockRenderable) renderable = fl_mock_renderable_new();
FlutterViewId view_id =
fl_engine_add_view(engine, 123, 456, 2.0, nullptr, add_view_cb, loop);
fl_engine_add_view(engine, FL_RENDERABLE(renderable), 123, 456, 2.0,
nullptr, add_view_cb, loop);
EXPECT_GT(view_id, 0);
EXPECT_TRUE(called);
@@ -688,8 +691,10 @@ TEST(FlEngineTest, AddViewError) {
return kSuccess;
}));
FlutterViewId view_id = fl_engine_add_view(engine, 123, 456, 2.0, nullptr,
add_view_error_cb, loop);
g_autoptr(FlMockRenderable) renderable = fl_mock_renderable_new();
FlutterViewId view_id =
fl_engine_add_view(engine, FL_RENDERABLE(renderable), 123, 456, 2.0,
nullptr, add_view_error_cb, loop);
EXPECT_GT(view_id, 0);
// Blocks here until add_view_error_cb is called.
@@ -718,8 +723,10 @@ TEST(FlEngineTest, AddViewEngineError) {
return kInvalidArguments;
}));
FlutterViewId view_id = fl_engine_add_view(engine, 123, 456, 2.0, nullptr,
add_view_engine_error_cb, loop);
g_autoptr(FlMockRenderable) renderable = fl_mock_renderable_new();
FlutterViewId view_id =
fl_engine_add_view(engine, FL_RENDERABLE(renderable), 123, 456, 2.0,
nullptr, add_view_engine_error_cb, loop);
EXPECT_GT(view_id, 0);
// Blocks here until remove_view_engine_error_cb is called.

42
engine/src/flutter/shell/platform/linux/fl_renderer.cc
View File

@@ -51,9 +51,6 @@ typedef struct {
// The format used to create textures.
GLint general_format;
// Views being rendered.
GHashTable* views;
// target dimension for resizing
int target_width;
int target_height;
@@ -85,12 +82,6 @@ typedef struct {
G_DEFINE_TYPE_WITH_PRIVATE(FlRenderer, fl_renderer, G_TYPE_OBJECT)
static void free_weak_ref(gpointer value) {
GWeakRef* ref = static_cast<GWeakRef*>(value);
g_weak_ref_clear(ref);
free(ref);
}
// Check if running on an NVIDIA driver.
static gboolean is_nvidia() {
const gchar* vendor = reinterpret_cast<const gchar*>(glGetString(GL_VENDOR));
@@ -349,10 +340,12 @@ static gboolean present_layers(FlRenderer* self,
}
}
GWeakRef* ref = static_cast<GWeakRef*>(
g_hash_table_lookup(priv->views, GINT_TO_POINTER(view_id)));
g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&priv->engine));
if (engine == nullptr) {
return TRUE;
}
g_autoptr(FlRenderable) renderable =
ref != nullptr ? FL_RENDERABLE(g_weak_ref_get(ref)) : nullptr;
fl_engine_get_renderable(engine, view_id);
if (renderable == nullptr) {
return TRUE;
}
@@ -462,7 +455,6 @@ static void fl_renderer_dispose(GObject* object) {
fl_renderer_unblock_main_thread(self);
g_weak_ref_clear(&priv->engine);
g_clear_pointer(&priv->views, g_hash_table_unref);
g_clear_pointer(&priv->framebuffers_by_view_id, g_hash_table_unref);
g_mutex_clear(&priv->present_mutex);
g_cond_clear(&priv->present_condition);
@@ -477,8 +469,6 @@ static void fl_renderer_class_init(FlRendererClass* klass) {
static void fl_renderer_init(FlRenderer* self) {
FlRendererPrivate* priv = reinterpret_cast<FlRendererPrivate*>(
fl_renderer_get_instance_private(self));
priv->views = g_hash_table_new_full(g_direct_hash, g_direct_equal, nullptr,
free_weak_ref);
priv->framebuffers_by_view_id = g_hash_table_new_full(
g_direct_hash, g_direct_equal, nullptr,
reinterpret_cast<GDestroyNotify>(g_ptr_array_unref));
@@ -495,28 +485,6 @@ void fl_renderer_set_engine(FlRenderer* self, FlEngine* engine) {
g_weak_ref_init(&priv->engine, engine);
}
void fl_renderer_add_renderable(FlRenderer* self,
FlutterViewId view_id,
FlRenderable* renderable) {
FlRendererPrivate* priv = reinterpret_cast<FlRendererPrivate*>(
fl_renderer_get_instance_private(self));
g_return_if_fail(FL_IS_RENDERER(self));
GWeakRef* ref = g_new(GWeakRef, 1);
g_weak_ref_init(ref, G_OBJECT(renderable));
g_hash_table_insert(priv->views, GINT_TO_POINTER(view_id), ref);
}
void fl_renderer_remove_view(FlRenderer* self, FlutterViewId view_id) {
FlRendererPrivate* priv = reinterpret_cast<FlRendererPrivate*>(
fl_renderer_get_instance_private(self));
g_return_if_fail(FL_IS_RENDERER(self));
g_hash_table_remove(priv->views, GINT_TO_POINTER(view_id));
}
void* fl_renderer_get_proc_address(FlRenderer* self, const char* name) {
g_return_val_if_fail(FL_IS_RENDERER(self), NULL);

21
engine/src/flutter/shell/platform/linux/fl_renderer.h
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@@ -66,27 +66,6 @@ struct _FlRendererClass {
*/
void fl_renderer_set_engine(FlRenderer* renderer, FlEngine* engine);
/**
* fl_renderer_add_renderable:
* @renderer: an #FlRenderer.
* @view_id: the ID of the view.
* @renderable: object that is to be rendered on.
*
* Add a view to render on.
*/
void fl_renderer_add_renderable(FlRenderer* renderer,
FlutterViewId view_id,
FlRenderable* renderable);
/**
* fl_renderer_remove_view:
* @renderer: an #FlRenderer.
* @view_id: the ID of the view.
*
* Remove a view from the renderer.
*/
void fl_renderer_remove_view(FlRenderer* renderer, FlutterViewId view_id);
/**
* fl_renderer_get_proc_address:
* @renderer: an #FlRenderer.

36
engine/src/flutter/shell/platform/linux/fl_renderer_test.cc
View File

@@ -8,6 +8,7 @@
#include "flutter/common/constants.h"
#include "flutter/fml/logging.h"
#include "flutter/fml/synchronization/waitable_event.h"
#include "flutter/shell/platform/linux/fl_engine_private.h"
#include "flutter/shell/platform/linux/fl_framebuffer.h"
#include "flutter/shell/platform/linux/testing/mock_epoxy.h"
#include "flutter/shell/platform/linux/testing/mock_renderer.h"
@@ -30,9 +31,7 @@ TEST(FlRendererTest, BackgroundColor) {
g_autoptr(FlMockRenderer) renderer = fl_mock_renderer_new();
fl_renderer_setup(FL_RENDERER(renderer));
fl_renderer_set_engine(FL_RENDERER(renderer), engine);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
fl_renderer_wait_for_frame(FL_RENDERER(renderer), 1024, 1024);
FlutterBackingStoreConfig config = {
.struct_size = sizeof(FlutterBackingStoreConfig),
@@ -84,9 +83,7 @@ TEST(FlRendererTest, RestoresGLState) {
g_autoptr(FlFramebuffer) framebuffer =
fl_framebuffer_new(GL_RGB, kWidth, kHeight);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
fl_renderer_wait_for_frame(FL_RENDERER(renderer), kWidth, kHeight);
FlutterBackingStore backing_store;
@@ -151,9 +148,7 @@ TEST(FlRendererTest, BlitFramebuffer) {
g_autoptr(FlMockRenderer) renderer = fl_mock_renderer_new();
fl_renderer_setup(FL_RENDERER(renderer));
fl_renderer_set_engine(FL_RENDERER(renderer), engine);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
fl_renderer_wait_for_frame(FL_RENDERER(renderer), 1024, 1024);
FlutterBackingStoreConfig config = {
.struct_size = sizeof(FlutterBackingStoreConfig),
@@ -211,9 +206,7 @@ TEST(FlRendererTest, BlitFramebufferExtension) {
g_autoptr(FlMockRenderer) renderer = fl_mock_renderer_new();
fl_renderer_setup(FL_RENDERER(renderer));
fl_renderer_set_engine(FL_RENDERER(renderer), engine);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
fl_renderer_wait_for_frame(FL_RENDERER(renderer), 1024, 1024);
FlutterBackingStoreConfig config = {
.struct_size = sizeof(FlutterBackingStoreConfig),
@@ -264,9 +257,7 @@ TEST(FlRendererTest, NoBlitFramebuffer) {
g_autoptr(FlMockRenderer) renderer = fl_mock_renderer_new();
fl_renderer_setup(FL_RENDERER(renderer));
fl_renderer_set_engine(FL_RENDERER(renderer), engine);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
fl_renderer_wait_for_frame(FL_RENDERER(renderer), 1024, 1024);
FlutterBackingStoreConfig config = {
.struct_size = sizeof(FlutterBackingStoreConfig),
@@ -320,9 +311,7 @@ TEST(FlRendererTest, BlitFramebufferNvidia) {
g_autoptr(FlMockRenderer) renderer = fl_mock_renderer_new();
fl_renderer_setup(FL_RENDERER(renderer));
fl_renderer_set_engine(FL_RENDERER(renderer), engine);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
fl_renderer_wait_for_frame(FL_RENDERER(renderer), 1024, 1024);
FlutterBackingStoreConfig config = {
.struct_size = sizeof(FlutterBackingStoreConfig),
@@ -377,11 +366,10 @@ TEST(FlRendererTest, MultiView) {
g_autoptr(FlMockRenderer) renderer = fl_mock_renderer_new();
fl_renderer_setup(FL_RENDERER(renderer));
fl_renderer_set_engine(FL_RENDERER(renderer), engine);
fl_renderer_add_renderable(FL_RENDERER(renderer),
flutter::kFlutterImplicitViewId,
FL_RENDERABLE(renderable));
fl_renderer_add_renderable(FL_RENDERER(renderer), 1,
FL_RENDERABLE(secondary_renderable));
fl_engine_set_implicit_view(engine, FL_RENDERABLE(renderable));
FlutterViewId view_id =
fl_engine_add_view(engine, FL_RENDERABLE(secondary_renderable), 1024, 768,
1.0, nullptr, nullptr, nullptr);
fl_renderer_wait_for_frame(FL_RENDERER(renderer), 1024, 1024);
EXPECT_EQ(fl_mock_renderable_get_redraw_count(renderable),
@@ -405,7 +393,7 @@ TEST(FlRendererTest, MultiView) {
.backing_store = &backing_store,
.size = {.width = 1024, .height = 1024}};
const FlutterLayer* layers[] = {&layer0};
fl_renderer_present_layers(FL_RENDERER(renderer), 1, layers, 1);
fl_renderer_present_layers(FL_RENDERER(renderer), view_id, layers, 1);
latch.Signal();
}).detach();

15
engine/src/flutter/shell/platform/linux/fl_view.cc
View File

@@ -479,9 +479,6 @@ static void realize_cb(FlView* self) {
g_signal_connect_swapped(toplevel_window, "delete-event",
G_CALLBACK(window_delete_event_cb), self);
fl_renderer_add_renderable(FL_RENDERER(self->renderer), self->view_id,
FL_RENDERABLE(self));
// Flutter engine will need to make the context current from raster thread
// during initialization.
fl_renderer_clear_current(FL_RENDERER(self->renderer));
@@ -558,9 +555,6 @@ static void fl_view_dispose(GObject* object) {
self->cursor_changed_cb_id = 0;
}
// Stop rendering.
fl_renderer_remove_view(FL_RENDERER(self->renderer), self->view_id);
// Release the view ID from the engine.
fl_engine_remove_view(self->engine, self->view_id, nullptr, nullptr,
nullptr);
@@ -773,6 +767,8 @@ G_MODULE_EXPORT FlView* fl_view_new(FlDartProject* project) {
g_signal_connect_swapped(self->gl_area, "unrealize", G_CALLBACK(unrealize_cb),
self);
fl_engine_set_implicit_view(engine, FL_RENDERABLE(self));
return self;
}
@@ -784,14 +780,11 @@ G_MODULE_EXPORT FlView* fl_view_new_for_engine(FlEngine* engine) {
g_assert(FL_IS_RENDERER_GDK(renderer));
self->renderer = FL_RENDERER_GDK(g_object_ref(renderer));
self->view_id = fl_engine_add_view(engine, 1, 1, 1.0, self->cancellable,
view_added_cb, self);
self->view_id = fl_engine_add_view(engine, FL_RENDERABLE(self), 1, 1, 1.0,
self->cancellable, view_added_cb, self);
setup_engine(self);
fl_renderer_add_renderable(FL_RENDERER(self->renderer), self->view_id,
FL_RENDERABLE(self));
g_signal_connect_swapped(self->gl_area, "realize",
G_CALLBACK(secondary_realize_cb), self);
return self;