scene_fps.cc File Reference

#include <cmath>
#include "BLI_math_base.h"
#include "DNA_scene_types.h"
#include "ED_scene.hh"
#include "MEM_guardedalloc.h"

Go to the source code of this file.

Classes
struct	FrameSample
struct	ScreenFrameRateInfo

Macros
#define	FIXED_UNIT   FrameSampleT(65535)

Typedefs
using	FrameSampleT = uint32_t
using	FrameSumT = uint64_t

Functions
void	ED_scene_fps_average_clear (Scene *scene)
void	ED_scene_fps_average_accumulate (Scene *scene, const short fps_samples, const double ltime)
bool	ED_scene_fps_average_calc (const Scene *scene, SceneFPS_State *r_state)

Detailed Description

Define ED_scene_fps_* functions.

Definition in file scene_fps.cc.

Macro Definition Documentation

FIXED_UNIT

#define FIXED_UNIT   FrameSampleT(65535)

This values gives enough precision while not overflowing a 64-bit integer when accumulating. Compared to the same calculation with double the error rate is less than 0.5 microsecond, more than enough precision for FPS display.

Definition at line 29 of file scene_fps.cc.

Referenced by ED_scene_fps_average_calc().

Typedef Documentation

FrameSampleT

using FrameSampleT = uint32_t

Definition at line 21 of file scene_fps.cc.

FrameSumT

using FrameSumT = uint64_t

Definition at line 22 of file scene_fps.cc.

Function Documentation

ED_scene_fps_average_accumulate()

void ED_scene_fps_average_accumulate	(	Scene *	scene,
		short	fps_samples,
		double	ltime )

Update frame rate info for viewport drawing.

Parameters

ltime

Time since the last update, compatible with the result of BLI_time_now_seconds.

Definition at line 92 of file scene_fps.cc.

References ceilf, float, FPS, ScreenFrameRateInfo::fps_average, ScreenFrameRateInfo::fps_target, ScreenFrameRateInfo::fps_target_is_fractional, max_ii(), MEM_callocN, MEM_freeN(), ScreenFrameRateInfo::time_curr, ScreenFrameRateInfo::time_prev, ScreenFrameRateInfo::times_fps_num, and ScreenFrameRateInfo::times_fps_num_set.

Referenced by screen_animation_step_invoke().

ED_scene_fps_average_calc()

bool ED_scene_fps_average_calc	(	const Scene *	scene,
		SceneFPS_State *	r_state )

Definition at line 132 of file scene_fps.cc.

References BLI_assert, error(), FIXED_UNIT, float, SceneFPS_State::fps_average, ScreenFrameRateInfo::fps_average, SceneFPS_State::fps_target, ScreenFrameRateInfo::fps_target, SceneFPS_State::fps_target_is_fractional, ScreenFrameRateInfo::fps_target_is_fractional, printf, ScreenFrameRateInfo::time_curr, ScreenFrameRateInfo::time_prev, ScreenFrameRateInfo::times_fps, ScreenFrameRateInfo::times_fps_index, ScreenFrameRateInfo::times_fps_num, ScreenFrameRateInfo::times_fps_num_set, ScreenFrameRateInfo::times_fps_sum, and FrameSample::value.

ED_scene_fps_average_clear()

void ED_scene_fps_average_clear

(

Scene *

scene

)

Clear run-time data for accumulating animation playback average times.

Definition at line 71 of file scene_fps.cc.

References BLI_assert, MEM_freeN(), ScreenFrameRateInfo::times_fps, ScreenFrameRateInfo::times_fps_num_set, ScreenFrameRateInfo::times_fps_sum, and FrameSample::value.

Referenced by ED_screen_animation_play().