Fix ATTENUATION and implement SHADOW_ATTENUATION.

servers/rendering/rasterizer_rd/rasterizer_scene_high_end_rd.cpp

@@ -2734,6 +2734,7 @@ RasterizerSceneHighEndRD::RasterizerSceneHighEndRD(RasterizerStorageRD *p_storag
 		actions.renames["LIGHT_COLOR"] = "light_color";
 		actions.renames["LIGHT"] = "light";
 		actions.renames["ATTENUATION"] = "attenuation";
+		actions.renames["SHADOW_ATTENUATION"] = "shadow_attenuation";
 		actions.renames["DIFFUSE_LIGHT"] = "diffuse_light";
 		actions.renames["SPECULAR_LIGHT"] = "specular_light";
 

servers/rendering/shader_types.cpp

@@ -145,7 +145,8 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["VIEW"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["LIGHT"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["LIGHT_COLOR"] = constt(ShaderLanguage::TYPE_VEC3);
-	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["ATTENUATION"] = constt(ShaderLanguage::TYPE_VEC3);
+	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["ATTENUATION"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["SHADOW_ATTENUATION"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["ALBEDO"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["BACKLIGHT"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["ROUGHNESS"] = constt(ShaderLanguage::TYPE_FLOAT);