diff options
Diffstat (limited to 'source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl')
| -rw-r--r-- | source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl index 15958dcf65e..139dcb33222 100644 --- a/source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl +++ b/source/blender/gpu/shaders/material/gpu_shader_material_principled.glsl @@ -70,7 +70,6 @@ void node_bsdf_principled(vec4 base_color, in_Refraction_3.N = N; /* Normalized during eval. */ in_Refraction_3.roughness = do_multiscatter != 0.0 ? roughness : transmission_roughness; in_Refraction_3.ior = ior; - CLOSURE_EVAL_FUNCTION_4(node_bsdf_principled, Diffuse, Glossy, Glossy, Refraction); @@ -92,9 +91,9 @@ void node_bsdf_principled(vec4 base_color, vec3 base_color_tint = tint_from_color(base_color.rgb); - /* TODO(fclem) This isn't good for rough glass using multiscatter (since the fresnel is applied - * on each microfacet in cycles). */ - float fresnel = F_eta(in_Refraction_3.ior, NV); + float fresnel = (do_multiscatter != 0.0) ? + btdf_lut(NV, in_Glossy_1.roughness, in_Refraction_3.ior).y : + F_eta(in_Refraction_3.ior, NV); { /* Glossy reflections. @@ -159,7 +158,11 @@ void node_bsdf_principled(vec4 base_color, } if (transmission > 1e-5) { + float btdf = (do_multiscatter != 0.0) ? + 1.0 : + btdf_lut(NV, in_Refraction_3.roughness, in_Refraction_3.ior).x; /* TODO(fclem) This could be going to a transmission render pass instead. */ + out_Refraction_3.radiance *= btdf; out_Refraction_3.radiance = render_pass_glossy_mask(vec3(1), out_Refraction_3.radiance); out_Refraction_3.radiance *= base_color.rgb; /* Simulate 2nd transmission event. */ |