Support render texture for Vulkan+Impeller

flutter/shell/platform/embedder/embedder.h

@@ -924,6 +924,9 @@ typedef void* FlutterVulkanQueueHandle;
 /// Alias for VkImage.
 typedef uint64_t FlutterVulkanImageHandle;
 
+/// Alias for VkDeviceMemory.
+typedef uint64_t FlutterVulkanDeviceMemoryHandle;
+
 typedef struct {
   /// The size of this struct. Must be sizeof(FlutterVulkanImage).
   size_t struct_size;
@@ -952,6 +955,36 @@ typedef bool (*FlutterVulkanPresentCallback)(
     void* /* user data */,
     const FlutterVulkanImage* /* image */);
 
+typedef struct {
+  /// Handle to the VkImage that is owned by the embedder. The engine will
+  /// bind this image for writing the frame.
+  FlutterVulkanImageHandle image;
+  /// The VkDeviceMemory that backs the iamge.
+  FlutterVulkanDeviceMemoryHandle image_memory;
+  /// The VkFormat of the image (for example: VK_FORMAT_R8G8B8A8_UNORM).
+  uint32_t format;
+  /// User data to be returned on the invocation of the destruction callback.
+  void* user_data;
+  /// Callback invoked (on an engine managed thread) that asks the embedder to
+  /// collect the texture.
+  VoidCallback destruction_callback;
+  /// Optional parameters for texture height/width, default is 0, non-zero means
+  /// the texture has the specified width/height.
+  /// Width of the texture.
+  size_t width;
+  /// Height of the texture.
+  size_t height;
+} FlutterVulkanTexture;
+
+/// Callback to provide an external texture for a given texture_id.
+/// See: external_texture_frame_callback.
+typedef bool (*FlutterVulkanTextureFrameCallback)(
+    void* /* user data */,
+    int64_t /* texture identifier */,
+    size_t /* width */,
+    size_t /* height */,
+    FlutterVulkanTexture* /* texture out */);
+
 typedef struct {
   /// The size of this struct. Must be sizeof(FlutterVulkanRendererConfig).
   size_t struct_size;
@@ -1015,7 +1048,11 @@ typedef struct {
   /// without any additional synchronization.
   /// Not used if a FlutterCompositor is supplied in FlutterProjectArgs.
   FlutterVulkanPresentCallback present_image_callback;
-
+  /// When the embedder specifies that a texture has a frame available, the
+  /// engine will call this method (on an internal engine managed thread) so
+  /// that external texture details can be supplied to the engine for subsequent
+  /// composition.
+  FlutterVulkanTextureFrameCallback external_texture_frame_callback;
 } FlutterVulkanRendererConfig;
 
 typedef struct {

flutter/shell/platform/tizen/BUILD.gn

@@ -157,7 +157,13 @@ template("embedder") {
         target_name == "flutter_tizen_tv_experimental" ||
         target_name == "flutter_tizen_common_experimental") {
       defines += [ "FLUTTER_TIZEN_EXPERIMENTAL" ]
-      sources += [ "tizen_renderer_vulkan.cc" ]
+      sources += [
+        "external_texture_pixel_vulkan.cc",
+        "external_texture_surface_vulkan.cc",
+        "external_texture_surface_vulkan_buffer.cc",
+        "external_texture_surface_vulkan_buffer_dma.cc",
+        "tizen_renderer_vulkan.cc",
+      ]
       deps += [ "//flutter/third_party/volk" ]
     }
 

flutter/shell/platform/tizen/external_texture.h

@@ -13,36 +13,51 @@
 
 namespace flutter {
 
+static std::atomic<int64_t> next_texture_id = {1};
+
+class ExternalTexture {
+ public:
+  ExternalTexture() : texture_id_(next_texture_id++) {}
+
+  virtual ~ExternalTexture() = default;
+
+  // Returns the unique id for the ExternalTextureGL instance.
+  int64_t TextureId() { return texture_id_; }
+
+ protected:
+  const int64_t texture_id_ = 0;
+};
+
 enum class ExternalTextureExtensionType { kNone, kNativeSurface, kDmaBuffer };
 
 struct ExternalTextureGLState {
   uint32_t gl_texture;
   ExternalTextureExtensionType gl_extension;
 };
 
-static std::atomic<int64_t> next_texture_id = {1};
-
-class ExternalTexture {
+class ExternalGLTexture : public ExternalTexture {
  public:
-  ExternalTexture(ExternalTextureExtensionType gl_extension =
-                      ExternalTextureExtensionType::kNone)
-      : state_(std::make_unique<ExternalTextureGLState>()),
-        texture_id_(next_texture_id++) {
+  ExternalGLTexture(ExternalTextureExtensionType gl_extension =
+                        ExternalTextureExtensionType::kNone)
+      : ExternalTexture(), state_(std::make_unique<ExternalTextureGLState>()) {
     state_->gl_extension = gl_extension;
   }
 
-  virtual ~ExternalTexture() = default;
-
-  // Returns the unique id for the ExternalTextureGL instance.
-  int64_t TextureId() { return texture_id_; }
-
-  virtual bool PopulateTexture(size_t width,
-                               size_t height,
-                               FlutterOpenGLTexture* opengl_texture) = 0;
+  virtual bool PopulateGLTexture(size_t width,
+                                 size_t height,
+                                 FlutterOpenGLTexture* opengl_texture) = 0;
 
  protected:
   std::unique_ptr<ExternalTextureGLState> state_;
-  const int64_t texture_id_ = 0;
+};
+
+class ExternalVulkanTexture : public ExternalTexture {
+ public:
+  ExternalVulkanTexture() : ExternalTexture() {}
+
+  virtual bool PopulateVulkanTexture(size_t width,
+                                     size_t height,
+                                     FlutterVulkanTexture* vulkan_texture) = 0;
 };
 
 }  // namespace flutter

flutter/shell/platform/tizen/external_texture_pixel_egl.cc

@@ -11,7 +11,7 @@
 
 namespace flutter {
 
-bool ExternalTexturePixelEGL::PopulateTexture(
+bool ExternalTexturePixelEGL::PopulateGLTexture(
     size_t width,
     size_t height,
     FlutterOpenGLTexture* opengl_texture) {
@@ -33,7 +33,7 @@ bool ExternalTexturePixelEGL::PopulateTexture(
 ExternalTexturePixelEGL::ExternalTexturePixelEGL(
     FlutterDesktopPixelBufferTextureCallback texture_callback,
     void* user_data)
-    : ExternalTexture(),
+    : ExternalGLTexture(),
       texture_callback_(texture_callback),
       user_data_(user_data) {}
 

flutter/shell/platform/tizen/external_texture_pixel_egl.h

@@ -11,17 +11,17 @@
 
 namespace flutter {
 
-class ExternalTexturePixelEGL : public ExternalTexture {
+class ExternalTexturePixelEGL : public ExternalGLTexture {
  public:
   ExternalTexturePixelEGL(
       FlutterDesktopPixelBufferTextureCallback texture_callback,
       void* user_data);
 
   ~ExternalTexturePixelEGL() = default;
 
-  bool PopulateTexture(size_t width,
-                       size_t height,
-                       FlutterOpenGLTexture* opengl_texture) override;
+  bool PopulateGLTexture(size_t width,
+                         size_t height,
+                         FlutterOpenGLTexture* opengl_texture) override;
 
   bool CopyPixelBuffer(size_t& width, size_t& height);
 

flutter/shell/platform/tizen/external_texture_pixel_egl_impeller.cc

@@ -11,7 +11,7 @@
 
 namespace flutter {
 
-bool ExternalTexturePixelEGLImpeller::PopulateTexture(
+bool ExternalTexturePixelEGLImpeller::PopulateGLTexture(
     size_t width,
     size_t height,
     FlutterOpenGLTexture* opengl_texture) {
@@ -43,7 +43,7 @@ bool ExternalTexturePixelEGLImpeller::PopulateTexture(
 ExternalTexturePixelEGLImpeller::ExternalTexturePixelEGLImpeller(
     FlutterDesktopPixelBufferTextureCallback texture_callback,
     void* user_data)
-    : ExternalTexture(),
+    : ExternalGLTexture(),
       texture_callback_(texture_callback),
       user_data_(user_data) {}
 

flutter/shell/platform/tizen/external_texture_pixel_egl_impeller.h

@@ -11,17 +11,17 @@
 
 namespace flutter {
 
-class ExternalTexturePixelEGLImpeller : public ExternalTexture {
+class ExternalTexturePixelEGLImpeller : public ExternalGLTexture {
  public:
   ExternalTexturePixelEGLImpeller(
       FlutterDesktopPixelBufferTextureCallback texture_callback,
       void* user_data);
 
   ~ExternalTexturePixelEGLImpeller() = default;
 
-  bool PopulateTexture(size_t width,
-                       size_t height,
-                       FlutterOpenGLTexture* opengl_texture) override;
+  bool PopulateGLTexture(size_t width,
+                         size_t height,
+                         FlutterOpenGLTexture* opengl_texture) override;
 
  private:
   FlutterDesktopPixelBufferTextureCallback texture_callback_ = nullptr;