60 lines
1.9 KiB
Text
60 lines
1.9 KiB
Text
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//
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// Copyright 2014-2018 Celtoys Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include <Foundation/NSThread.h>
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#include <Foundation/NSDictionary.h>
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#include <Foundation/NSString.h>
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#import <Metal/Metal.h>
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// Store command buffer in thread-local so that each thread can point to its own
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static void SetCommandBuffer(id command_buffer)
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{
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NSMutableDictionary* thread_data = [[NSThread currentThread] threadDictionary];
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thread_data[@"rmtMTLCommandBuffer"] = command_buffer;
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}
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static id GetCommandBuffer()
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{
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NSMutableDictionary* thread_data = [[NSThread currentThread] threadDictionary];
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return thread_data[@"rmtMTLCommandBuffer"];
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}
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extern "C" void _rmt_BindMetal(id command_buffer)
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{
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SetCommandBuffer(command_buffer);
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}
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extern "C" void _rmt_UnbindMetal()
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{
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SetCommandBuffer(0);
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}
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// Needs to be in the same lib for this to work
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extern "C" unsigned long long rmtMetal_usGetTime();
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static void SetTimestamp(void* data)
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{
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*((unsigned long long*)data) = rmtMetal_usGetTime();
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}
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extern "C" void rmtMetal_MeasureCommandBuffer(unsigned long long* out_start, unsigned long long* out_end, unsigned int* out_ready)
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{
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id command_buffer = GetCommandBuffer();
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[command_buffer addScheduledHandler:^(id <MTLCommandBuffer>){ SetTimestamp(out_start); }];
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[command_buffer addCompletedHandler:^(id <MTLCommandBuffer>){ SetTimestamp(out_end); *out_ready = 1; }];
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}
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