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Metal: Implement timer queries. Closes #3774. (#3778)

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This commit is contained in:
Branimir Karadžić
2026-06-22 00:28:50 -07:00
committed by GitHub
parent 2ed5f31f6a
commit 48efdb18da
2 changed files with 23 additions and 18 deletions
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39
src/renderer_mtl.cpp
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@@ -4613,9 +4613,16 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
ra.clear();
}
static constexpr uint64_t kNanosecondsPerSecond = UINT64_C(1000000000);
void TimerQueryMtl::init()
{
m_frequency = bx::getHPFrequency();
m_frequency = kNanosecondsPerSecond;
for (uint32_t ii = 0; ii < BX_COUNTOF(m_result); ++ii)
{
m_result[ii].reset();
}
}
void TimerQueryMtl::shutdown()
@@ -4624,8 +4631,7 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
uint32_t TimerQueryMtl::begin(uint32_t _resultIdx, uint32_t _frameNum)
{
BX_UNUSED(_resultIdx);
BX_UNUSED(_frameNum);
BX_UNUSED(_resultIdx, _frameNum);
return 0;
}
@@ -4634,11 +4640,6 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
BX_UNUSED(_idx);
}
static void setTimestamp(void* _data)
{
*( (int64_t*)_data) = bx::getHPCounter();
}
void TimerQueryMtl::addHandlers(MTL::CommandBuffer*& _commandBuffer)
{
while (0 == m_control.reserve(1) )
@@ -4646,14 +4647,18 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
m_control.consume(1);
}
uint32_t offset = m_control.m_current;
const uint32_t offset = m_control.m_current;
_commandBuffer->addScheduledHandler(
MTL::HandlerFunction([pBegin = &m_result[offset].m_begin](MTL::CommandBuffer*) { setTimestamp(pBegin); })
);
_commandBuffer->addCompletedHandler(
MTL::HandlerFunction([pEnd = &m_result[offset].m_end](MTL::CommandBuffer*) { setTimestamp(pEnd); })
MTL::HandlerFunction([this, offset](MTL::CommandBuffer* _cmdBuf)
{
const double gpuBegin = _cmdBuf->GPUStartTime();
const double gpuEnd = _cmdBuf->GPUEndTime();
m_result[offset].m_begin = uint64_t(gpuBegin * double(kNanosecondsPerSecond) );
m_result[offset].m_end = uint64_t(gpuEnd * double(kNanosecondsPerSecond) );
})
);
m_control.commit(1);
}
@@ -4662,8 +4667,8 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
if (0 != m_control.getNumUsed() )
{
uint32_t offset = m_control.m_read;
m_begin = m_result[offset].m_begin;
m_end = m_result[offset].m_end;
m_begin = m_result[offset].m_begin;
m_end = m_result[offset].m_end;
m_elapsed = m_end - m_begin;
m_control.consume(1);
@@ -4849,8 +4854,6 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
int64_t timeBegin = bx::getHPCounter();
int64_t captureElapsed = 0;
m_gpuTimer.addHandlers(m_commandBuffer);
if (m_blitCommandEncoder)
{
m_blitCommandEncoder->endEncoding();
@@ -6123,6 +6126,8 @@ static_assert(BX_COUNTOF(s_accessNames) == Access::Count, "Invalid s_accessNames
if (NULL != m_commandBuffer)
{
m_gpuTimer.addHandlers(m_commandBuffer);
m_cmd.kick(true, false);
m_commandBuffer = NULL;
}

2
src/renderer_mtl.h
View File

@@ -626,7 +626,7 @@ namespace bgfx { namespace mtl
uint64_t m_begin;
uint64_t m_end;
uint32_t m_pending;
uint32_t m_frameNum; // TODO: implement (currently stays 0)
uint32_t m_frameNum;
};
uint64_t m_begin;