Shadow map rendering optimization

-All shadow rendering is done with raster now (no compute)
-All shadow rendering is done by rendering directly to the shadow atlas
-Improved how buffer clearing is done to optimize the above.
-Ability to set shadows as 16 bits.

1 files changed, 2 insertions, 13 deletions

diff --git a/servers/rendering_server.cpp b/servers/rendering_server.cpp
index 367dd7c638..9ac66cd4bf 100644
--- a/servers/rendering_server.cpp
+++ b/servers/rendering_server.cpp
@@ -1661,7 +1661,7 @@ void RenderingServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("viewport_set_transparent_background", "viewport", "enabled"), &RenderingServer::viewport_set_transparent_background);
 	ClassDB::bind_method(D_METHOD("viewport_set_global_canvas_transform", "viewport", "transform"), &RenderingServer::viewport_set_global_canvas_transform);
 	ClassDB::bind_method(D_METHOD("viewport_set_canvas_stacking", "viewport", "canvas", "layer", "sublayer"), &RenderingServer::viewport_set_canvas_stacking);
-	ClassDB::bind_method(D_METHOD("viewport_set_shadow_atlas_size", "viewport", "size"), &RenderingServer::viewport_set_shadow_atlas_size);
+	ClassDB::bind_method(D_METHOD("viewport_set_shadow_atlas_size", "viewport", "size", "use_16_bits"), &RenderingServer::viewport_set_shadow_atlas_size, DEFVAL(false));
 	ClassDB::bind_method(D_METHOD("viewport_set_shadow_atlas_quadrant_subdivision", "viewport", "quadrant", "subdivision"), &RenderingServer::viewport_set_shadow_atlas_quadrant_subdivision);
 	ClassDB::bind_method(D_METHOD("viewport_set_msaa", "viewport", "msaa"), &RenderingServer::viewport_set_msaa);
 	ClassDB::bind_method(D_METHOD("viewport_set_use_debanding", "viewport", "enable"), &RenderingServer::viewport_set_use_debanding);
@@ -2272,6 +2272,7 @@ RenderingServer::RenderingServer() {
 	GLOBAL_DEF("rendering/quality/directional_shadow/soft_shadow_quality", 2);
 	GLOBAL_DEF("rendering/quality/directional_shadow/soft_shadow_quality.mobile", 0);
 	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/directional_shadow/soft_shadow_quality", PropertyInfo(Variant::INT, "rendering/quality/directional_shadow/soft_shadow_quality", PROPERTY_HINT_ENUM, "Hard (Fastest),Soft Low (Fast),Soft Medium (Average),Soft High (Slow),Soft Ultra (Slowest)"));
+	GLOBAL_DEF("rendering/quality/directional_shadow/16_bits", true);
 
 	GLOBAL_DEF("rendering/quality/shadows/soft_shadow_quality", 2);
 	GLOBAL_DEF("rendering/quality/shadows/soft_shadow_quality.mobile", 0);
@@ -2282,18 +2283,6 @@ RenderingServer::RenderingServer() {
 	GLOBAL_DEF("rendering/quality/rd_renderer/use_low_end_renderer", false);
 	GLOBAL_DEF("rendering/quality/rd_renderer/use_low_end_renderer.mobile", true);
 
-	GLOBAL_DEF("rendering/quality/shadow_atlas/size", 4096);
-	GLOBAL_DEF("rendering/quality/shadow_atlas/size.mobile", 2048);
-	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/shadow_atlas/size", PropertyInfo(Variant::INT, "rendering/quality/shadow_atlas/size", PROPERTY_HINT_RANGE, "256,16384"));
-	GLOBAL_DEF("rendering/quality/shadow_atlas/quadrant_0_subdiv", 1);
-	GLOBAL_DEF("rendering/quality/shadow_atlas/quadrant_1_subdiv", 2);
-	GLOBAL_DEF("rendering/quality/shadow_atlas/quadrant_2_subdiv", 3);
-	GLOBAL_DEF("rendering/quality/shadow_atlas/quadrant_3_subdiv", 4);
-	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/shadow_atlas/quadrant_0_subdiv", PropertyInfo(Variant::INT, "rendering/quality/shadow_atlas/quadrant_0_subdiv", PROPERTY_HINT_ENUM, "Disabled,1 Shadow,4 Shadows,16 Shadows,64 Shadows,256 Shadows,1024 Shadows"));
-	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/shadow_atlas/quadrant_1_subdiv", PropertyInfo(Variant::INT, "rendering/quality/shadow_atlas/quadrant_1_subdiv", PROPERTY_HINT_ENUM, "Disabled,1 Shadow,4 Shadows,16 Shadows,64 Shadows,256 Shadows,1024 Shadows"));
-	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/shadow_atlas/quadrant_2_subdiv", PropertyInfo(Variant::INT, "rendering/quality/shadow_atlas/quadrant_2_subdiv", PROPERTY_HINT_ENUM, "Disabled,1 Shadow,4 Shadows,16 Shadows,64 Shadows,256 Shadows,1024 Shadows"));
-	ProjectSettings::get_singleton()->set_custom_property_info("rendering/quality/shadow_atlas/quadrant_3_subdiv", PropertyInfo(Variant::INT, "rendering/quality/shadow_atlas/quadrant_3_subdiv", PROPERTY_HINT_ENUM, "Disabled,1 Shadow,4 Shadows,16 Shadows,64 Shadows,256 Shadows,1024 Shadows"));
-
 	GLOBAL_DEF("rendering/quality/reflections/roughness_layers", 8);
 	GLOBAL_DEF("rendering/quality/reflections/texture_array_reflections", true);
 	GLOBAL_DEF("rendering/quality/reflections/texture_array_reflections.mobile", false);