| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <Metal/Metal.h> |
| #include "fml/trace_event.h" |
| #include "impeller/renderer/backend/metal/context_mtl.h" |
| #include "impeller/renderer/backend/metal/formats_mtl.h" |
| |
| #include <memory> |
| |
| #include "impeller/renderer/backend/metal/gpu_tracer_mtl.h" |
| |
| namespace impeller { |
| |
| void GPUTracerMTL::MarkFrameEnd() { |
| if (@available(ios 10.3, tvos 10.2, macos 10.15, macCatalyst 13.0, *)) { |
| Lock lock(trace_state_mutex_); |
| current_state_ = (current_state_ + 1) % 16; |
| } |
| } |
| |
| void GPUTracerMTL::RecordCmdBuffer(id<MTLCommandBuffer> buffer) { |
| if (@available(ios 10.3, tvos 10.2, macos 10.15, macCatalyst 13.0, *)) { |
| Lock lock(trace_state_mutex_); |
| auto current_state = current_state_; |
| trace_states_[current_state].pending_buffers += 1; |
| |
| auto weak_self = weak_from_this(); |
| [buffer addCompletedHandler:^(id<MTLCommandBuffer> buffer) { |
| auto self = weak_self.lock(); |
| if (!self) { |
| return; |
| } |
| Lock lock(self->trace_state_mutex_); |
| auto& state = self->trace_states_[current_state]; |
| state.pending_buffers--; |
| state.smallest_timestamp = std::min( |
| state.smallest_timestamp, static_cast<Scalar>(buffer.GPUStartTime)); |
| state.largest_timestamp = std::max( |
| state.largest_timestamp, static_cast<Scalar>(buffer.GPUEndTime)); |
| |
| if (state.pending_buffers == 0) { |
| auto gpu_ms = |
| (state.largest_timestamp - state.smallest_timestamp) * 1000; |
| state.smallest_timestamp = std::numeric_limits<float>::max(); |
| state.largest_timestamp = 0; |
| FML_TRACE_COUNTER("flutter", "GPUTracer", |
| reinterpret_cast<int64_t>(this), // Trace Counter ID |
| "FrameTimeMS", gpu_ms); |
| } |
| }]; |
| } |
| } |
| |
| } // namespace impeller |