Mario Kart 8/Materials

In Mario Kart 8 and Mario Kart 8 Deluxe most (if not all) BFRES models store its BFSHA file as an external file into the BFRES, named Turbo_UBER.bfsha. While the shader file has been compiled for each model specifilly, meaning the file is different, the shader source is still the same. This article describes the different uniform variables and shader variations and their purpose.

Render Infos

The following render infos are supported. Note that Switch stores additional system render infos which is not directly used by the shader.

Name	Type	Description
gsys_pass	String	Unknown.
gsys_dynamic_depth_shadow	String	Unknown.
gsys_dynamic_depth_shadow_only	String	Unknown.
gsys_static_depth_shadow	String	Unknown.
gsys_static_depth_shadow_only	String	Unknown.
gsys_cube_map	String	Unknown.
gsys_cube_map_only	String	Unknown.
gsys_dynamic_reflection	String	Unknown.
gsys_multi_filter	String	Unknown.
gsys_priority_hint	String	Unknown.
gsys_priority	Int32	Unknown.
gsys_light_diffuse	String	Unknown.
gsys_env_obj_set	String	Unknown.
gsys_bake_group	String	Unknown.
gsys_bake_texel_param	Float	Unknown.
gsys_bake_uv_unite	String	Unknown.

Shader Options

The following shader options are supported:

Name	Description
gsys_alpha_test_enable	Unknown.
gsys_alpha_test_func	Unknown.
enable_far_infinity	Unknown.
enable_far_inf_ignore_y	Unknown.
gsys_invalidate_world_srt	Unknown.
gsys_invalidate_texture_srt	Unknown.
gsys_invalidate_xlu_zprepass	Unknown.
enable_normal_map	Enables normal map 0.
gsys_normalmap_BC1	Sets if normal maps are in UNORM or SNORM format, 1 meaning UNORM.
gsys_enable_normal_map2	Enables normal map 1.
gsys_enable_area_env	Unknown.
enable_area_env_direct	Unknown.
gsys_enable_light_probe	Unknown.
enable_indirect	Enables indirect texture.
indirect_world_scale	Unknown.
indirect_texture_is_BC5s	Unknown.
indirect_effect_albedo	Unknown.
indirect_effect_normal	Unknown.
indirect_effect_normal2	Unknown.
indirect_effect_specmask	Unknown.
indirect_effect_emission	Unknown.
indirect_effect_multiA	Unknown.
indirect_effect_multiB	Unknown.
select_indirect_mag_albedo	Unknown.
select_indirect_mag_normal	Unknown.
select_indirect_mag_normal2	Unknown.
select_indirect_mag_specmask	Unknown.
select_indirect_mag_emission	Unknown.
select_indirect_mag_multiA	Unknown.
select_indirect_mag_multiB	Unknown.
enable_color_buffer	Unknown.
color_buffer_as_albedo	Unknown.
color_buffer_as_multi_A	Unknown.
color_buffer_as_multi_B	Unknown.
enable_refraction	Unknown.
mii_albedo_skin_color	Unknown.
mii_albedo_tex_skin_color	Unknown.
mii_albedo_favorite_color	Unknown.
mii_albedo_tex_favorite_color	Unknown.
mii_reg0_skin_color	Unknown.
mii_reg0_favorite_color	Unknown.
enable_multi_texture	Unknown.
multi_tex_output_type	Unknown.
multi_tex_calc_type_color	Unknown.
multi_tex_calc_type_alpha	Unknown.
enable_geo_multi	Unknown.
geo_multi_alpha_type	Unknown.
geo_multi_specmask_calc_type	Unknown.
enable_diffuse2	Unknown.
enable_albedo	Enables albedo maps.
enable_vtx_color_diff	Enables vertex color.
enable_diffuse	Unknown.
enable_opa_trans	Unknown.
enable_opa_trans_tex	Unknown.
enable_opa_trans_albedo	Unknown.
enable_edge_light	Unknown.
enable_vtx_color_edge_light	Unknown.
enable_specular	Unknown.
enable_specular_mask	Unknown.
enable_specular_mask_rougness	Unknown.
specular_mask_is_color	Unknown.
enable_specular_shadow_link	Unknown.
enable_vtx_color_spec	Unknown.
enable_fresnel	Unknown.
enable_emission	Unknown.
enable_emission_map	Unknown.
enable_vtx_color_emission	Unknown.
enable_bake_texture	Enables bake maps.
enable_bake_shadow_mask	Unknown.
enable_bake_l_cancel_s	Unknown.
enable_d_shadow_bake_l_cancel	Unknown.
enable_projection_shadow	Unknown.
enable_projection_light	Unknown.
enable_static_depth_shadow	Unknown.
enable_dynamic_depth_shadow	Unknown.
enable_decal_ao	Unknown.
enable_albedo_ao	Unknown.
enable_fog	Unknown.
enable_fog_y	Unknown.
fog_game_effect_order	Unknown.
enable_fog_y_prim	Unknown.
enable_fog_emission	Unknown.
enable_fog_edge	Unknown.
enable_vtx_alpha_trans	Unknown.
enable_color_buffer_blend	Unknown.
enable_edge_xlu	Unknown.
enable_edge_xlu_rev	Unknown.
enable_water_surface	Unknown.
enable_shiny_specular	Unknown.
enable_fresnel_look_depend	Unknown.
enable_fresnel_look_factor	Unknown.
enable_game_effect	Unknown.
gamefx_lerp_type	Unknown.
enable_gamefx_edge	Unknown.
enable_gamefx_edge_fragment	Unknown.
enable_specular_dirty_mask	Unknown.
enable_light_pre_pass_intensity	Unknown.
enable_white_exposure	Unknown.
enable_cascade_shadow_force1	Unknown.
enable_vertex_billboard	Unknown.
enable_screen_fake_scale	Unknown.
texcoord_calc_texcoord0	Unknown.
texcoord_calc_texcoord2	Unknown.
texcoord_calc_texcoord3	Unknown.
texcoord_aspect_mod_texcoord0	Unknown.
texcoord_aspect_mod_texcoord2	Unknown.
texcoord_aspect_mod_texcoord3	Unknown.
texcoord_select_specmask	Specular map texture coordinate.
texcoord_select_normal	Normal map 0 texture coordinate.
texcoord_select_normal2	Normal map 1 texture coordinate.
texcoord_select_indirectA	Indirect map texture coordinate.
texcoord_select_multiA	Albedo map 1 texture coordinate.
texcoord_select_multiB	Albedo map 2 texture coordinate.
texcoord_select_emission	Emission map texture coordinate.
texcoord_select_transmitt	Unknown.
enable_specular_aniso	Unknown.
bake_shadow_type	Unknown.
bake_light_type	Unknown.
bake_debug_disable_shadow	Unknown.
enable_light_pre_pass	Unknown.
enable_light_pre_pass_no_effect	Unknown.
decal_trail_type	Unknown.
gsys_renderstate	Unknown.

Vertex Attributes

The following vertex attributes are supported:

ID	Location	Description
_p0	0	Position attribute.
_n0	1	Normal attribute.
_t0	2	Tangent attribute.
_b0	3	Binormal attribute.
_w0	4	Blend weight attribute.
_i0	5	Blend index attribute.
_u0	6	Texture coordinate 0 attribute.
_u1	7	Texture coordinate 1 attribute.
_u2	8	Texture coordinate 2 attribute.
_u3	9	Texture coordinate 3 attribute.
_c0	10	Color 0 attribute.
_c1	11	Color 1 attribute.

Texture Samplers

The following texture samplers are supported:

ID	Description
_a0	Albedo map 0.
_s0	Specular map 0.
_n0	Normal map 0.
_a3	Albedo map 3. Used for indirect texturing.
_a1	Albedo map 1. Used for multi texturing.
_a2	Albedo map 2. Used for multi texturing.
_e0	Emission map 0.
_n1	Normal map 1.
_b0	Bake map 0.
_b1	Bake map 1.

Shader Parameters

Name	Type	Description
edge_light_rim_i	Float	Unknown.
d_shadow_bake_l_cancel_rate	Float	Unknown.
gsys_i_color_ratio0	Float	Unknown.
gsys_edge_ratio0	Float	Unknown.
gsys_edge_width0	Float	Unknown.
bloom_intensity	Float	Unknown.
gsys_outline_width	Float	Unknown.
gsys_alpha_threshold	Float	Unknown.
game_edge_pow	Float	Unknown.
edge_alpha_scale	Float	Unknown.
post_multi_texture	Float	Unknown.
edge_alpha_width	Float	Unknown.
edge_alpha_pow	Float	Unknown.
transparency	Float	Transparency for xlu.
alphat_out_start	Float	Unknown.
alphat_out_end	Float	Unknown.
gsys_area_env_index_diffuse	Float	Unknown.
shadow_density	Float	Unknown.
ao_density	Float	Unknown.
transmit_intensity	Float	Unknown.
edge_light_vc_intensity	Float	Unknown.
specular_aniso_power	Float	Unknown.
transmit_shadow_intensity	Float	Unknown.
edge_light_intensity	Float	Unknown.
light_pre_pass_intensity	Float	Unknown.
gsys_bake_opacity	Float	Unknown.
shiny_specular_intensity	Float	Unknown.
specular_intensity	Float	Unknown.
specular_roughness	Float	Unknown.
specular_fresnel_i	Float	Unknown.
specular_fresnel_s	Float	Unknown.
specular_fresnel_m	Float	Unknown.
shiny_specular_sharpness	Float	Unknown.
emission_intensity	Float	Unknown.
soft_edge_dist_inv	Float	Unknown.
silhoutte_depth	Float	Unknown.
refraction_intensity	Float	Unknown.
normal_map_weight	Float	Normal map weight between map 0 and map 1. 0 means only normal map 0 and 1 mean only normal map 1.
shiny_specular_fresnel	Float	Unknown.
silhoutte_depth_contrast	Float	Unknown.
fresnel_look_depend_factor	Float	Unknown.
mii_hair_specular_intensity	Float	Unknown.
decal_trail_intensity	Float	Unknown.
screen_fake_scale_begin_ratio	Float	Unknown.
fog_emission_intensity	Float	Unknown.
fog_emission_effect	Float	Unknown.
fog_edge_power	Float	Unknown.
fog_edge_width	Float	Unknown.
gsys_alpha_test_ref_value	Float	Unknown.
edge_light_sharpness	Float	Unknown.
indirect_mag	Float_2D	Unknown.
indirect_magB	Float_2D	Unknown.
silhoutte_depth_color	Float_3D	Unknown.
gsys_mii_skin_color	Float_3D	Unknown.
gsys_mii_favorite_color	Float_3D	Unknown.
gsys_point_light_color	Float_3D	Unknown.
gsys_edge_color0	Float_3D	Unknown.
transmit_color	Float_3D	Unknown.
gsys_i_color0	Float_3D	Unknown.
gsys_i_color0_b	Float_3D	Unknown.
gsys_bake_light_scale	Float_3D	Unknown.
gsys_bake_light_scale1	Float_3D	Unknown.
gsys_bake_light_scale2	Float_3D	Unknown.
albedo_tex_color	Float_3D	Albedo color which is multiplied to the albedo texture color.
decal_trail_color	Float_3D	Unknown.
fog_emission_color	Float_3D	Unknown.
screen_fake_scale_factor	Float_3D	Unknown.
edge_light_color	Float_3D	Unknown.
shiny_specular_color	Float_3D	Unknown.
specular_color	Float_3D	Specular color which is multiplied to the specular texture color.
emission_color	Float_3D	Emission color which is multiplied to the emission texture color.
gsys_depth_silhoutte_color	Float_4D	Unknown.
gsys_outline_color	Float_4D	Unknown.
gsys_area_env_data0	Float_4D	Unknown.
gsys_area_env_data1	Float_4D	Unknown.
gsys_bake_st0	Float_4D	Bake map 0 UV transformation. First two floats are scale, last two floats are translation.
gsys_bake_st1	Float_4D	Bake map 1 UV transformation. First two floats are scale, last two floats are translation.
multi_tex_reg0	Float_4D	Unknown.
multi_tex_reg1	Float_4D	Unknown.
multi_tex_param0	Float_4D	Unknown.
fog_edge_color	Float_4D	Unknown.
gsys_xlu_zprepass_alpha	Float_4D	Unknown.
multi_tex_reg2	Float_4D	Unknown.
gsys_sssss_color	Float_4D	Unknown.
tex_mtx1	Texture_SRT	Texture transformation for UV 1.
tex_mtx2	Texture_SRT	Texture transformation for UV 2.
tex_mtx0	Texture_SRT	Texture transformation for UV 0.