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authorFernando Sahmkow <fsahmkow27@gmail.com>2020-02-10 15:32:51 +0100
committerFernandoS27 <fsahmkow27@gmail.com>2020-02-10 15:44:54 +0100
commit8e9a4944dbbb4a22d149bb989faf32db0a979766 (patch)
tree2c24fc758046e03929dcd8e42c76674580e0a34e /src
parentMaxwell3D: Correct query reporting. (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/video_core/engines/maxwell_3d.cpp3
-rw-r--r--src/video_core/gpu.cpp14
-rw-r--r--src/video_core/gpu.h2
3 files changed, 17 insertions, 2 deletions
diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index 2a5855795..a7e1dee04 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -9,6 +9,7 @@
#include "core/core_timing.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/engines/shader_type.h"
+#include "video_core/gpu.h"
#include "video_core/memory_manager.h"
#include "video_core/rasterizer_interface.h"
#include "video_core/textures/texture.h"
@@ -533,7 +534,7 @@ void Maxwell3D::StampQueryResult(u64 payload, bool long_query) {
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.CoreTiming().GetTicks();
+ query_result.timestamp = system.GPU().GetTicks();
memory_manager.WriteBlock(sequence_address, &query_result, sizeof(query_result));
} else {
memory_manager.Write<u32>(sequence_address, static_cast<u32>(payload));
diff --git a/src/video_core/gpu.cpp b/src/video_core/gpu.cpp
index 062ca83b8..4aca39faf 100644
--- a/src/video_core/gpu.cpp
+++ b/src/video_core/gpu.cpp
@@ -6,6 +6,7 @@
#include "common/microprofile.h"
#include "core/core.h"
#include "core/core_timing.h"
+#include "core/core_timing_util.h"
#include "core/memory.h"
#include "video_core/engines/fermi_2d.h"
#include "video_core/engines/kepler_compute.h"
@@ -122,6 +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 {
+ const u64 cpu_ticks = system.CoreTiming().GetTicks();
+ const u64 nanoseconds = Core::Timing::CyclesToNs(cpu_ticks).count();
+ return (nanoseconds * gpu_ticks_num) / gpu_ticks_den;
+}
+
void GPU::FlushCommands() {
renderer.Rasterizer().FlushCommands();
}
@@ -340,7 +352,7 @@ void GPU::ProcessSemaphoreTriggerMethod() {
block.sequence = regs.semaphore_sequence;
// TODO(Kmather73): Generate a real GPU timestamp and write it here instead of
// CoreTiming
- block.timestamp = system.CoreTiming().GetTicks();
+ block.timestamp = GetTicks();
memory_manager->WriteBlock(regs.semaphore_address.SemaphoreAddress(), &block,
sizeof(block));
} else {
diff --git a/src/video_core/gpu.h b/src/video_core/gpu.h
index b648317bb..07727210c 100644
--- a/src/video_core/gpu.h
+++ b/src/video_core/gpu.h
@@ -192,6 +192,8 @@ public:
bool CancelSyncptInterrupt(u32 syncpoint_id, u32 value);
+ u64 GetTicks() const;
+
std::unique_lock<std::mutex> LockSync() {
return std::unique_lock{sync_mutex};
}