Make sure interop path works with draw_fn

plat_support to pass through the GL functor even if hwui is using vulkan
pipeline, since interop calls the GL functor.

Also remove sGLDrawThread and call functor on render thread, since
onDestroy and onContextDestroy are currently hard coded to run on render
thread as well, and functor expects all calls to be called on a single
thread.

Bug: 115613038
Test: draw_fn functor works with vulkan enabled
Change-Id: Ie3fa643695e95a6cc383f7ffe3eb3ad741792707

libs/hwui/pipeline/skia/VkInteropFunctorDrawable.cpp

@@ -36,8 +36,6 @@ namespace android {
 namespace uirenderer {
 namespace skiapipeline {
 
-static std::mutex sLock{};
-static ThreadBase* sGLDrawThread = nullptr;
 static renderthread::EglManager sEglManager;
 
 // ScopedDrawRequest makes sure a GL thread is started and EGL context is initialized on it.
@@ -47,32 +45,20 @@ public:
 
 private:
     void beginDraw() {
-        std::lock_guard _lock{sLock};
-
-        if (!sGLDrawThread) {
-            sGLDrawThread = new ThreadBase{};
-        }
-
-        if (!sGLDrawThread->isRunning()) {
-            sGLDrawThread->start("GLFunctorThread");
-        }
-
         if (!sEglManager.hasEglContext()) {
-            sGLDrawThread->queue().runSync([]() { sEglManager.initialize(); });
+            sEglManager.initialize();
         }
     }
 };
 
 void VkInteropFunctorDrawable::vkInvokeFunctor(Functor* functor) {
     ScopedDrawRequest _drawRequest{};
-    sGLDrawThread->queue().runSync([&]() {
-        EGLDisplay display = sEglManager.eglDisplay();
-        DrawGlInfo::Mode mode = DrawGlInfo::kModeProcessNoContext;
-        if (display != EGL_NO_DISPLAY) {
-            mode = DrawGlInfo::kModeProcess;
-        }
-        (*functor)(mode, nullptr);
-    });
+    EGLDisplay display = sEglManager.eglDisplay();
+    DrawGlInfo::Mode mode = DrawGlInfo::kModeProcessNoContext;
+    if (display != EGL_NO_DISPLAY) {
+        mode = DrawGlInfo::kModeProcess;
+    }
+    (*functor)(mode, nullptr);
 }
 
 #define FENCE_TIMEOUT 2000000000
@@ -113,7 +99,7 @@ void VkInteropFunctorDrawable::onDraw(SkCanvas* canvas) {
     // TODO: draw command has completed.
     // TODO: A simple but inefficient way is to flush and issue a QueueWaitIdle call. See
     // TODO: GrVkGpu::destroyResources() for example.
-    bool success = sGLDrawThread->queue().runSync([&]() -> bool {
+    {
         ATRACE_FORMAT("WebViewDraw_%dx%d", mFBInfo.width(), mFBInfo.height());
         EGLDisplay display = sEglManager.eglDisplay();
         LOG_ALWAYS_FATAL_IF(display == EGL_NO_DISPLAY, "Failed to get EGL_DEFAULT_DISPLAY! err=%s",
@@ -125,7 +111,7 @@ void VkInteropFunctorDrawable::onDraw(SkCanvas* canvas) {
         if (autoImage.image == EGL_NO_IMAGE_KHR) {
             ALOGW("Could not create EGL image, err =%s",
                   uirenderer::renderthread::EglManager::eglErrorString());
-            return false;
+            return;
         }
 
         AutoSkiaGlTexture glTexture;
@@ -156,7 +142,7 @@ void VkInteropFunctorDrawable::onDraw(SkCanvas* canvas) {
         if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
             ALOGE("Failed framebuffer check for created target buffer: %s",
                   GLUtils::getGLFramebufferError());
-            return false;
+            return;
         }
 
         glDisable(GL_STENCIL_TEST);
@@ -183,11 +169,6 @@ void VkInteropFunctorDrawable::onDraw(SkCanvas* canvas) {
         LOG_ALWAYS_FATAL_IF(waitStatus != EGL_CONDITION_SATISFIED_KHR,
                             "Failed to wait for the fence %#x", eglGetError());
         eglDestroySyncKHR(display, glDrawFinishedFence);
-        return true;
-    });
-
-    if (!success) {
-        return;
     }
 
     SkPaint paint;
@@ -208,15 +189,14 @@ VkInteropFunctorDrawable::~VkInteropFunctorDrawable() {
     if (auto lp = std::get_if<LegacyFunctor>(&mAnyFunctor)) {
         if (lp->listener) {
             ScopedDrawRequest _drawRequest{};
-            sGLDrawThread->queue().runSync(
-                    [&]() { lp->listener->onGlFunctorReleased(lp->functor); });
+            lp->listener->onGlFunctorReleased(lp->functor);
         }
     }
 }
 
 void VkInteropFunctorDrawable::syncFunctor(const WebViewSyncData& data) const {
     ScopedDrawRequest _drawRequest{};
-    sGLDrawThread->queue().runSync([&]() { FunctorDrawable::syncFunctor(data); });
+    FunctorDrawable::syncFunctor(data);
 }
 
 }  // namespace skiapipeline

native/webview/plat_support/draw_functor.cpp

@@ -82,13 +82,9 @@ int CreateFunctor(void* data, AwDrawFnFunctorCallbacks* functor_callbacks) {
       .onDestroyed = &onDestroyed,
   };
   if (!callbacks_initialized) {
-    switch (uirenderer::WebViewFunctor_queryPlatformRenderMode()) {
-      case uirenderer::RenderMode::OpenGL_ES:
-        webview_functor_callbacks.gles.draw = &draw_gl;
-        break;
-      case uirenderer::RenderMode::Vulkan:
-        break;
-    }
+    // Under uirenderer::RenderMode::Vulkan, whether gles or vk union should
+    // be populated should match whether the vk-gl interop is used.
+    webview_functor_callbacks.gles.draw = &draw_gl;
     callbacks_initialized = true;
   }
   SupportData* support = new SupportData{