Add mjrfCallback type.

PiperOrigin-RevId: 928640487
Change-Id: Iebf470caafe924a976e4a1b39b0c47727e22195b

src/experimental/filament/compat/light_manager.cc

@@ -63,7 +63,7 @@ static UniquePtr<mjrfTexture> CreateFallbackIndirectLightTexture(
   mjrf_defaultTextureData(&payload);
   payload.bytes = bytes;
   payload.nbytes = nbytes;
-  payload.release_callback = +[](void* user_data) {
+  payload.release = +[](void* user_data) {
     mju_closeResource((mjResource*)user_data);
   };
   payload.user_data = resource;

src/experimental/filament/compat/model_objects.cc

@@ -414,7 +414,7 @@ static void UpdateMeshData(mjrfMeshData* data, const mjModel* model, int id,
 
   MeshBuilder* builder = new MeshBuilder(num_vertices);
   data->user_data = builder;
-  data->release_callback = [](void* user_data) {
+  data->release = [](void* user_data) {
     delete static_cast<MeshBuilder*>(user_data);
   };
 
@@ -485,7 +485,7 @@ void UpdateSkinFlexMeshData(mjrfMeshData* data, const mjModel* model,
   data->index_type = mjINDEX_TYPE_U32;
   data->primitive_type = mjMESH_PRIMITIVE_TYPE_TRIANGLES;
   data->compute_bounds = true;
-  data->release_callback = nullptr;
+  data->release = nullptr;
   data->user_data = nullptr;
 }
 
@@ -572,7 +572,7 @@ void ModelObjects::UploadTexture(const mjModel* model, int id) {
       model->tex_width[id] * model->tex_height[id] * model->tex_nchannel[id];
   // We assume that the model has the same lifetime as the engine.
   payload.user_data = nullptr;
-  payload.release_callback = nullptr;
+  payload.release = nullptr;
 
   auto texture = CreateTexture(ctx_, config);
   mjrf_setTextureData(texture.get(), &payload);

src/experimental/filament/filament/builtins.cc

@@ -69,7 +69,7 @@ class BuiltinBuilder : public mjrfMeshData {
                                       Args&&... args) {
     auto builder = new T(std::forward<Args>(args)...);
     mjrfMeshData* mesh_data = builder->PrepareMeshData();
-    mesh_data->release_callback = +[](void* user_data) {
+    mesh_data->release = +[](void* user_data) {
       delete static_cast<BuiltinBuilder*>(user_data);
     };
     mesh_data->user_data = builder;

src/experimental/filament/filament/filament_context.cc

@@ -165,8 +165,8 @@ mjrfFrameHandle FilamentContext::Render(
 
   if (!read_requests.empty()) {
     engine_->flushAndWait();
-    if (read_requests[0].read_completed_callback) {
-      read_requests[0].read_completed_callback(read_requests[0].user_data);
+    if (read_requests[0].read_completed) {
+      read_requests[0].read_completed(read_requests[0].user_data);
     }
   }
 

src/experimental/filament/filament/mesh.cc

@@ -110,9 +110,9 @@ Mesh::Mesh(filament::Engine* engine, const mjrfMeshData& data)
 
   // If the user has provided a release callback, then we need to ensure we
   // call is when filament is done with the mesh data.
-  if (data.release_callback) {
+  if (data.release) {
     shared_state_->callbacks.push_back([=]() {
-      data.release_callback(data.user_data);
+      data.release(data.user_data);
     });
   }
 

src/experimental/filament/filament/texture.cc

@@ -162,7 +162,7 @@ Texture::~Texture() {
 
 void Texture::Upload(const mjrfTextureData& data) {
   user_data_ = data.user_data;
-  release_callback_ = data.release_callback;
+  release_callback_ = data.release;
 
   if (data.bytes == nullptr || data.nbytes == 0) {
     ReleaseData();

src/experimental/filament/render_context_filament.h

@@ -67,6 +67,9 @@ struct mjrfLight {};
 struct mjrfRenderable {};
 struct mjrfRenderTarget {};
 
+// Callback function type for rendering operations.
+typedef void (*mjrfCallback)(void* user_data);
+
 // ## Rendering Context (mjrfContext)
 //
 // The Context is the main entry point for the library. It manages all the
@@ -194,7 +197,7 @@ struct mjrfReadPixelsRequest {
 
   // Callback when the read pixels operation is complete. This function can
   // optionally be used to free the output buffer if needed.
-  void (*read_completed_callback)(void* user_data);
+  mjrfCallback read_completed;
 
   // User data to pass to the completion callback.
   void* user_data;
@@ -310,7 +313,7 @@ struct mjrfTextureData {
   // Because rendering may be multithreaded, we cannot make assumptions about
   // when the image data will finish uploading to the GPU. As such, we will use
   // this callback to notify callers when it is safe to free the image data.
-  void (*release_callback)(void* user_data);
+  mjrfCallback release;
 
   // User data to pass to the release callback.
   void* user_data;
@@ -441,7 +444,7 @@ struct mjrfMeshData {
   // Because rendering may be multithreaded, we cannot make assumptions about
   // when the mesh data will finish uploading to the GPU. As such, we will use
   // this callback to notify callers when it is safe to free the mesh data.
-  void (*release_callback)(void* user_data);
+  mjrfCallback release;
 
   // User data to pass to the release callback.
   void* user_data;

src/experimental/platform/ux/imgui_bridge.cc

@@ -101,7 +101,7 @@ uintptr_t ImguiBridge::UploadImage(uintptr_t tex_id, const uint8_t* pixels,
   texture_data.bytes = bytes;
   texture_data.nbytes = num_bytes;
   texture_data.user_data = bytes;
-  texture_data.release_callback = callback;
+  texture_data.release = callback;
 
   std::memcpy(bytes, pixels, num_bytes);
   mjrf_setTextureData(texture, &texture_data);
@@ -138,7 +138,7 @@ void ImguiBridge::UpdateTexture(ImTextureData* data) {
   texture_data.bytes = data->GetPixels();
   texture_data.nbytes = data->Width * data->Height * 4;
   texture_data.user_data = nullptr;
-  texture_data.release_callback = nullptr;
+  texture_data.release = nullptr;
   mjrf_setTextureData(iter->second.get(), &texture_data);
   data->SetStatus(ImTextureStatus_OK);
 }