| // Copyright 2020 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/metal/CommandRecordingContext.h" |
| |
| #include "common/Assert.h" |
| |
| namespace dawn::native::metal { |
| |
| CommandRecordingContext::CommandRecordingContext() = default; |
| |
| CommandRecordingContext::~CommandRecordingContext() { |
| // Commands must be acquired. |
| ASSERT(mCommands == nullptr); |
| } |
| |
| id<MTLCommandBuffer> CommandRecordingContext::GetCommands() { |
| return mCommands.Get(); |
| } |
| |
| void CommandRecordingContext::MarkUsed() { |
| mUsed = true; |
| } |
| bool CommandRecordingContext::WasUsed() const { |
| return mUsed; |
| } |
| |
| MaybeError CommandRecordingContext::PrepareNextCommandBuffer(id<MTLCommandQueue> queue) { |
| ASSERT(mCommands == nil); |
| ASSERT(!mUsed); |
| |
| // The MTLCommandBuffer will be autoreleased by default. |
| // The autorelease pool may drain before the command buffer is submitted. Retain so it stays |
| // alive. |
| mCommands = AcquireNSPRef([[queue commandBuffer] retain]); |
| if (mCommands == nil) { |
| return DAWN_INTERNAL_ERROR("Failed to allocate an MTLCommandBuffer"); |
| } |
| |
| return {}; |
| } |
| |
| NSPRef<id<MTLCommandBuffer>> CommandRecordingContext::AcquireCommands() { |
| // A blit encoder can be left open from WriteBuffer, make sure we close it. |
| if (mCommands != nullptr) { |
| EndBlit(); |
| } |
| |
| ASSERT(!mInEncoder); |
| mUsed = false; |
| return std::move(mCommands); |
| } |
| |
| id<MTLBlitCommandEncoder> CommandRecordingContext::EnsureBlit() { |
| ASSERT(mCommands != nullptr); |
| |
| if (mBlit == nullptr) { |
| ASSERT(!mInEncoder); |
| mInEncoder = true; |
| |
| // The encoder is created autoreleased. Retain it to avoid the autoreleasepool from |
| // draining from under us. |
| mBlit.Acquire([[*mCommands blitCommandEncoder] retain]); |
| } |
| return mBlit.Get(); |
| } |
| |
| void CommandRecordingContext::EndBlit() { |
| ASSERT(mCommands != nullptr); |
| |
| if (mBlit != nullptr) { |
| [*mBlit endEncoding]; |
| mBlit = nullptr; |
| mInEncoder = false; |
| } |
| } |
| |
| id<MTLComputeCommandEncoder> CommandRecordingContext::BeginCompute() { |
| ASSERT(mCommands != nullptr); |
| ASSERT(mCompute == nullptr); |
| ASSERT(!mInEncoder); |
| |
| mInEncoder = true; |
| // The encoder is created autoreleased. Retain it to avoid the autoreleasepool from |
| // draining from under us. |
| mCompute.Acquire([[*mCommands computeCommandEncoder] retain]); |
| return mCompute.Get(); |
| } |
| |
| void CommandRecordingContext::EndCompute() { |
| ASSERT(mCommands != nullptr); |
| ASSERT(mCompute != nullptr); |
| |
| [*mCompute endEncoding]; |
| mCompute = nullptr; |
| mInEncoder = false; |
| } |
| |
| id<MTLRenderCommandEncoder> CommandRecordingContext::BeginRender( |
| MTLRenderPassDescriptor* descriptor) { |
| ASSERT(mCommands != nullptr); |
| ASSERT(mRender == nullptr); |
| ASSERT(!mInEncoder); |
| |
| mInEncoder = true; |
| // The encoder is created autoreleased. Retain it to avoid the autoreleasepool from |
| // draining from under us. |
| mRender.Acquire([[*mCommands renderCommandEncoderWithDescriptor:descriptor] retain]); |
| return mRender.Get(); |
| } |
| |
| void CommandRecordingContext::EndRender() { |
| ASSERT(mCommands != nullptr); |
| ASSERT(mRender != nullptr); |
| |
| [*mRender endEncoding]; |
| mRender = nullptr; |
| mInEncoder = false; |
| } |
| |
| } // namespace dawn::native::metal |