Change default material alpha scissor threshold to 0.5

This makes the default behavior consistent between SpriteBase3D,
BaseMaterial3D and imported glTF scene materials.

Alpha scissor threshold property hints now allows for more precise
adjustments as well.

scene/3d/label_3d.cpp

@@ -126,7 +126,7 @@ void Label3D::_bind_methods() {
 	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "no_depth_test"), "set_draw_flag", "get_draw_flag", FLAG_DISABLE_DEPTH_TEST);
 	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "fixed_size"), "set_draw_flag", "get_draw_flag", FLAG_FIXED_SIZE);
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "alpha_cut", PROPERTY_HINT_ENUM, "Disabled,Discard,Opaque Pre-Pass"), "set_alpha_cut_mode", "get_alpha_cut_mode");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "alpha_scissor_threshold", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_alpha_scissor_threshold", "get_alpha_scissor_threshold");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "alpha_scissor_threshold", PROPERTY_HINT_RANGE, "0,1,0.001"), "set_alpha_scissor_threshold", "get_alpha_scissor_threshold");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "texture_filter", PROPERTY_HINT_ENUM, "Nearest,Linear,Nearest Mipmap,Linear Mipmap,Nearest Mipmap Anisotropic,Linear Mipmap Anisotropic"), "set_texture_filter", "get_texture_filter");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "render_priority", PROPERTY_HINT_RANGE, itos(RS::MATERIAL_RENDER_PRIORITY_MIN) + "," + itos(RS::MATERIAL_RENDER_PRIORITY_MAX) + ",1"), "set_render_priority", "get_render_priority");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "outline_render_priority", PROPERTY_HINT_RANGE, itos(RS::MATERIAL_RENDER_PRIORITY_MIN) + "," + itos(RS::MATERIAL_RENDER_PRIORITY_MAX) + ",1"), "set_outline_render_priority", "get_outline_render_priority");

scene/3d/sprite_3d.cpp

@@ -377,7 +377,7 @@ SpriteBase3D::SpriteBase3D() {
 	RS::get_singleton()->material_set_param(material, "uv1_scale", Vector3(1, 1, 1));
 	RS::get_singleton()->material_set_param(material, "uv2_offset", Vector3(0, 0, 0));
 	RS::get_singleton()->material_set_param(material, "uv2_scale", Vector3(1, 1, 1));
-	RS::get_singleton()->material_set_param(material, "alpha_scissor_threshold", 0.98);
+	RS::get_singleton()->material_set_param(material, "alpha_scissor_threshold", 0.5);
 
 	mesh = RenderingServer::get_singleton()->mesh_create();
 

scene/resources/material.cpp

@@ -2654,7 +2654,7 @@ void BaseMaterial3D::_bind_methods() {
 
 	ADD_GROUP("Transparency", "");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "transparency", PROPERTY_HINT_ENUM, "Disabled,Alpha,Alpha Scissor,Alpha Hash,Depth Pre-Pass"), "set_transparency", "get_transparency");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "alpha_scissor_threshold", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_alpha_scissor_threshold", "get_alpha_scissor_threshold");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "alpha_scissor_threshold", PROPERTY_HINT_RANGE, "0,1,0.001"), "set_alpha_scissor_threshold", "get_alpha_scissor_threshold");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "alpha_hash_scale", PROPERTY_HINT_RANGE, "0,2,0.01"), "set_alpha_hash_scale", "get_alpha_hash_scale");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "alpha_antialiasing_mode", PROPERTY_HINT_ENUM, "Disabled,Alpha Edge Blend,Alpha Edge Clip"), "set_alpha_antialiasing", "get_alpha_antialiasing");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "alpha_antialiasing_edge", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_alpha_antialiasing_edge", "get_alpha_antialiasing_edge");
@@ -2986,7 +2986,7 @@ BaseMaterial3D::BaseMaterial3D(bool p_orm) :
 
 	set_transparency(TRANSPARENCY_DISABLED);
 	set_alpha_antialiasing(ALPHA_ANTIALIASING_OFF);
-	set_alpha_scissor_threshold(0.05);
+	set_alpha_scissor_threshold(0.5);
 	set_alpha_hash_scale(1.0);
 	set_alpha_antialiasing_edge(0.3);