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author | Fernando Sahmkow <fsahmkow27@gmail.com> | 2020-02-13 23:16:07 +0100 |
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committer | Fernando Sahmkow <fsahmkow27@gmail.com> | 2020-02-13 23:16:07 +0100 |
commit | d6ed31b9faeb2b1ee7c04098e614a73ca11869af (patch) | |
tree | 9771a482e3e0bb5004bae4728820b969013918a5 /src/video_core | |
parent | GPU: Implement GPU Clock correctly. (diff) | |
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Diffstat (limited to 'src/video_core')
-rw-r--r-- | src/video_core/engines/maxwell_3d.cpp | 7 | ||||
-rw-r--r-- | src/video_core/gpu.cpp | 14 |
2 files changed, 10 insertions, 11 deletions
diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp index a7e1dee04..0b3e8749b 100644 --- a/src/video_core/engines/maxwell_3d.cpp +++ b/src/video_core/engines/maxwell_3d.cpp @@ -531,10 +531,7 @@ void Maxwell3D::StampQueryResult(u64 payload, bool long_query) { // Write the 128-bit result structure in long mode. Note: We emulate an infinitely fast // GPU, this command may actually take a while to complete in real hardware due to GPU // wait queues. - LongQueryResult query_result{}; - query_result.value = payload; - // TODO(Subv): Generate a real GPU timestamp and write it here instead of CoreTiming - query_result.timestamp = system.GPU().GetTicks(); + LongQueryResult query_result{payload, system.GPU().GetTicks()}; memory_manager.WriteBlock(sequence_address, &query_result, sizeof(query_result)); } else { memory_manager.Write<u32>(sequence_address, static_cast<u32>(payload)); @@ -548,7 +545,7 @@ void Maxwell3D::ProcessQueryGet() { switch (regs.query.query_get.operation) { case Regs::QueryOperation::Release: { - u64 result = regs.query.query_sequence; + const u64 result = regs.query.query_sequence; StampQueryResult(result, regs.query.query_get.short_query == 0); break; } diff --git a/src/video_core/gpu.cpp b/src/video_core/gpu.cpp index 4aca39faf..4419ab735 100644 --- a/src/video_core/gpu.cpp +++ b/src/video_core/gpu.cpp @@ -123,15 +123,17 @@ bool GPU::CancelSyncptInterrupt(const u32 syncpoint_id, const u32 value) { return true; } -// This values were reversed engineered by fincs from NVN -// The gpu clock is reported in units of 385/625 nanoseconds -constexpr u64 gpu_ticks_num = 384; -constexpr u64 gpu_ticks_den = 625; - u64 GPU::GetTicks() const { + // This values were reversed engineered by fincs from NVN + // The gpu clock is reported in units of 385/625 nanoseconds + constexpr u64 gpu_ticks_num = 384; + constexpr u64 gpu_ticks_den = 625; + const u64 cpu_ticks = system.CoreTiming().GetTicks(); const u64 nanoseconds = Core::Timing::CyclesToNs(cpu_ticks).count(); - return (nanoseconds * gpu_ticks_num) / gpu_ticks_den; + const u64 nanoseconds_num = nanoseconds / gpu_ticks_den; + const u64 nanoseconds_rem = nanoseconds % gpu_ticks_den; + return nanoseconds_num * gpu_ticks_num + (nanoseconds_rem * gpu_ticks_num) / gpu_ticks_den; } void GPU::FlushCommands() { |