diff options
| author | clayjohn <claynjohn@gmail.com> | 2022-12-02 15:39:20 -0800 |
|---|---|---|
| committer | clayjohn <claynjohn@gmail.com> | 2022-12-02 15:39:20 -0800 |
| commit | b2b89d7294ebb0824ce85b8bad59357caf5ec14f (patch) | |
| tree | 2425bf04162163488441a0975837e0ab924229b5 /servers/rendering/renderer_rd/shaders/forward_clustered | |
| parent | cdd99e9bec16db60efd894a06826f6fea139d00d (diff) | |
Properly remap roughness when reading from radiance map
This ensures that we consistently use perceptual roughness which matches the behaviour of most other PBR renderers like Blender, Ue4 and Godot 3
Diffstat (limited to 'servers/rendering/renderer_rd/shaders/forward_clustered')
| -rw-r--r-- | servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl b/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl index 896f51ca01..b27b2ae761 100644 --- a/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl +++ b/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl @@ -1084,12 +1084,13 @@ void fragment_shader(in SceneData scene_data) { #ifdef USE_RADIANCE_CUBEMAP_ARRAY float lod, blend; - blend = modf(roughness * MAX_ROUGHNESS_LOD, lod); + + blend = modf(sqrt(roughness) * MAX_ROUGHNESS_LOD, lod); specular_light = texture(samplerCubeArray(radiance_cubemap, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), vec4(ref_vec, lod)).rgb; specular_light = mix(specular_light, texture(samplerCubeArray(radiance_cubemap, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), vec4(ref_vec, lod + 1)).rgb, blend); #else - specular_light = textureLod(samplerCube(radiance_cubemap, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), ref_vec, roughness * MAX_ROUGHNESS_LOD).rgb; + specular_light = textureLod(samplerCube(radiance_cubemap, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), ref_vec, sqrt(roughness) * MAX_ROUGHNESS_LOD).rgb; #endif //USE_RADIANCE_CUBEMAP_ARRAY specular_light *= scene_data.IBL_exposure_normalization; @@ -1137,7 +1138,7 @@ void fragment_shader(in SceneData scene_data) { ref_vec = mix(ref_vec, n, clearcoat_roughness * clearcoat_roughness); float horizon = min(1.0 + dot(ref_vec, normal), 1.0); ref_vec = scene_data.radiance_inverse_xform * ref_vec; - float roughness_lod = mix(0.001, 0.1, clearcoat_roughness) * MAX_ROUGHNESS_LOD; + float roughness_lod = mix(0.001, 0.1, sqrt(clearcoat_roughness)) * MAX_ROUGHNESS_LOD; #ifdef USE_RADIANCE_CUBEMAP_ARRAY float lod, blend; |