Add default project boot splash with custom PNG image

assets/images/splash.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bi4g3x3jlcnjk"
+path="res://.godot/imported/splash.png-f8b0c4c0b0b0b0b0b0b0b0b0b0b0b0b0.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/images/splash.png"
+dest_files=["res://.godot/imported/splash.png-f8b0c4c0b0b0b0b0b0b0b0b0b0b0b0b0.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

project.godot

@@ -13,6 +13,9 @@ config_version=5
 config/name="placeholder"
 run/main_scene="uid://c1ibyecb1dmow"
 config/features=PackedStringArray("4.4", "GL Compatibility")
+boot_splash/image="res://assets/images/splash.png"
+boot_splash/fullsize=false
+boot_splash/use_filter=true
 
 [audio]
 

test/unit/test_main.gd

@@ -29,4 +29,20 @@ func test_project_settings():
 	# Test basic project settings
 	var app_name = ProjectSettings.get_setting("application/config/name")
 	assert_not_null(app_name, "Application name should be set in project settings")
-	assert_ne(app_name, "", "Application name should not be empty")
+	assert_ne(app_name, "", "Application name should not be empty")
+
+func test_boot_splash_configuration():
+	# Test that boot splash is properly configured
+	var splash_image = ProjectSettings.get_setting("application/boot_splash/image")
+	assert_not_null(splash_image, "Boot splash image should be configured")
+	assert_eq(splash_image, "res://assets/images/splash.png", "Boot splash should use custom splash.png")
+
+	# Test that the splash image file exists
+	assert_true(FileAccess.file_exists("res://assets/images/splash.png"), "Splash screen image file should exist")
+
+	# Test boot splash settings
+	var fullsize = ProjectSettings.get_setting("application/boot_splash/fullsize")
+	assert_false(fullsize, "Boot splash fullsize should be false for proper scaling")
+
+	var use_filter = ProjectSettings.get_setting("application/boot_splash/use_filter")
+	assert_true(use_filter, "Boot splash should use filter for smooth rendering")