From bf3acbf388406f736286d990adb5f35a9023c390 Mon Sep 17 00:00:00 2001 From: x2048 Date: Sun, 25 Jul 2021 12:36:23 +0200 Subject: Distribute shadow map update over multiple frames to reduce stutter (#11422) Reduces stutter and freezes when playing. * Maintains double SM and SM Color textures * Light frustum update triggers incremental generation of shadow map into secondary 'future' textures. * Every incremental update renders a portion of the shadow draw list (split equally). * After defined number of frames (currently, 4), 'future' and 'current' textures are swapped, and DirectionalLight 'commits' the new frustum to use when rendering shadows on screen. Co-authored-by: sfan5 --- src/client/game.cpp | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) (limited to 'src/client/game.cpp') diff --git a/src/client/game.cpp b/src/client/game.cpp index 85dd8f4bb..6fc57c8cc 100644 --- a/src/client/game.cpp +++ b/src/client/game.cpp @@ -609,7 +609,6 @@ struct GameRunData { float jump_timer; float damage_flash; float update_draw_list_timer; - float update_shadows_timer; f32 fog_range; @@ -3881,10 +3880,8 @@ 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; - bool draw_list_updated = false; v3f camera_direction = camera->getDirection(); if (runData.update_draw_list_timer >= update_draw_list_delta @@ -3894,18 +3891,10 @@ 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; } - 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(); - } + if (RenderingEngine::get_shadow_renderer()) { + updateShadows(); } m_game_ui->update(*stats, client, draw_control, cam, runData.pointed_old, gui_chat_console, dtime); @@ -4062,7 +4051,7 @@ void Game::updateShadows() shadow->getDirectionalLight().setDirection(sun_pos); shadow->setTimeOfDay(in_timeofday); - shadow->getDirectionalLight().update_frustum(camera, client); + shadow->getDirectionalLight().update_frustum(camera, client, m_camera_offset_changed); } /**************************************************************************** -- cgit v1.2.3