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Avoid draw list and shadow map update in the same frame to reduce dti…
…me jitter (#11393)

* Separate draw list and shadows update to reduce jitter

* Avoid draw list update and shadow update in the same frame

* Force-update shadows when camera offset changes
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x2048 committed Jul 11, 2021
1 parent f5706d4 commit effb5356caee01c8bfa63e98974347aab01f96ef
Showing with 14 additions and 3 deletions.
  1. +14 −3 src/client/game.cpp
@@ -609,6 +609,7 @@ struct GameRunData {
float jump_timer;
float damage_flash;
float update_draw_list_timer;
float update_shadows_timer;

f32 fog_range;

@@ -3874,10 +3875,10 @@ void Game::updateFrame(ProfilerGraph *graph, RunStats *stats, f32 dtime,
changed much
*/
runData.update_draw_list_timer += dtime;
runData.update_shadows_timer += dtime;

float update_draw_list_delta = 0.2f;
if (ShadowRenderer *shadow = RenderingEngine::get_shadow_renderer())
update_draw_list_delta = shadow->getUpdateDelta();
bool draw_list_updated = false;

v3f camera_direction = camera->getDirection();
if (runData.update_draw_list_timer >= update_draw_list_delta
@@ -3887,8 +3888,18 @@ void Game::updateFrame(ProfilerGraph *graph, RunStats *stats, f32 dtime,
runData.update_draw_list_timer = 0;
client->getEnv().getClientMap().updateDrawList();
runData.update_draw_list_last_cam_dir = camera_direction;
draw_list_updated = true;
}

updateShadows();
if (ShadowRenderer *shadow = RenderingEngine::get_shadow_renderer()) {
update_draw_list_delta = shadow->getUpdateDelta();

if (m_camera_offset_changed ||
(runData.update_shadows_timer > update_draw_list_delta &&
(!draw_list_updated || shadow->getDirectionalLightCount() == 0))) {
runData.update_shadows_timer = 0;
updateShadows();
}
}

m_game_ui->update(*stats, client, draw_control, cam, runData.pointed_old, gui_chat_console, dtime);

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