copilot/infinipaint
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Set an update sleep duration to save battery

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This commit is contained in:
Yousef Khadadeh 2026-02-25 18:57:55 +03:00
parent 711eb48f15
commit f225c421fc
1 changed files with 16 additions and 0 deletions
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16
src/main.cpp
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@ -9,6 +9,7 @@
#include <filesystem>
#include <include/core/SkAlphaType.h>
#include <include/core/SkColorType.h>
#include <thread>
#ifdef USE_BACKEND_OPENGL
#ifndef __EMSCRIPTEN__
#ifdef USE_BACKEND_OPENGLES_3_0
@ -147,6 +148,7 @@ struct MainStruct {
std::ofstream logFile;
std::chrono::steady_clock::time_point lastRenderTimePoint = std::chrono::steady_clock::now();
std::chrono::steady_clock::time_point lastUpdateTimePoint = std::chrono::steady_clock::now();
std::chrono::steady_clock::duration frameRefreshDuration = std::chrono::steady_clock::duration::zero();
} MainData;
@ -564,6 +566,17 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv) {
return SDL_APP_CONTINUE;
}
void cpu_save_sleep(MainStruct& mS) {
int swapInterval = 0;
constexpr std::chrono::duration MINIMUM_UPDATE_FRAMETIME = std::chrono::milliseconds(3);
SDL_GL_GetSwapInterval(&swapInterval);
if(swapInterval != 0) {
std::chrono::time_point point1 = mS.lastRenderTimePoint + mS.frameRefreshDuration;
std::chrono::time_point point2 = mS.lastUpdateTimePoint + MINIMUM_UPDATE_FRAMETIME;
std::this_thread::sleep_until(std::min(point1, point2));
}
}
void attempt_redraw_and_swap_buffers(MainStruct& mS) {
int swapInterval = 0;
SDL_GL_GetSwapInterval(&swapInterval);
@ -593,6 +606,8 @@ SDL_AppResult SDL_AppIterate(void *appstate) {
std::chrono::steady_clock::time_point frameTimeStart = std::chrono::steady_clock::now();
MainStruct& mS = *((MainStruct*)appstate);
mS.lastUpdateTimePoint = std::chrono::steady_clock::now();
#ifdef NDEBUG
try {
#endif
@ -630,6 +645,7 @@ SDL_AppResult SDL_AppIterate(void *appstate) {
SDL_StopTextInput(mS.window);
mS.m->input.text.lastAcceptingTextInputVal = mS.m->input.text.get_accepting_input();
cpu_save_sleep(mS);
attempt_redraw_and_swap_buffers(mS);
mS.m->input.frame_reset(mS.m->window.size);