pulp::render::GpuRenderTimeTracker Class Reference

Thread-safe holder for the latest GPU render-time sample. More...

#include <gpu_render_time.hpp>

Public Member Functions
void	store (std::uint64_t elapsed_ns, bool callback_ok)
	Store a sample from the finished-with-stats callback.
bool	have_sample () const
	True once at least one valid sample has landed.
double	last_ms () const
	The most recent valid GPU render duration in milliseconds (0 until the first sample lands).

Detailed Description

Thread-safe holder for the latest GPU render-time sample.

The Graphite finished-with-stats callback fires on whatever thread pumps GPU completion (the render thread, via Context::submit), while the inspector reads from the UI thread. A scalar duration + a "have a sample yet" flag are independent atomics; a stale read across the pair is harmless (it only ever shows a slightly older valid duration). Relaxed ordering is sufficient — there is no other state these guard.

Member Function Documentation

have_sample()

bool pulp::render::GpuRenderTimeTracker::have_sample ( ) const

inlinenodiscard

True once at least one valid sample has landed.

Lets the inspector distinguish "supported, waiting for the first sample" from "0 ms".

last_ms()

double pulp::render::GpuRenderTimeTracker::last_ms ( ) const

inlinenodiscard

The most recent valid GPU render duration in milliseconds (0 until the first sample lands).

store()

void pulp::render::GpuRenderTimeTracker::store ( std::uint64_t elapsed_ns, bool callback_ok )

inline

Store a sample from the finished-with-stats callback.

Ignored when the callback failed or the elapsed time is zero (so the last good sample is retained rather than being clobbered by a "no sample" frame).

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The documentation for this class was generated from the following file:

• /home/runner/work/pulp/pulp/core/render/include/pulp/render/gpu_render_time.hpp