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| author | Dmitry Kostenko <codeforsmile@gmail.com> | 2021-11-04 00:18:09 +0100 |
|---|---|---|
| committer | x2048 <codeforsmile@gmail.com> | 2022-03-07 23:45:26 +0100 |
| commit | f2cccf8da72c39299c8e7ba6ad8f782a7d61b883 (patch) | |
| tree | ee4639b2090bc55a709d46187b310fd775c65c4d /client | |
| parent | 10be033791dd71af6ba3120eb6a397f27673c2bb (diff) | |
| download | minetest-f2cccf8da72c39299c8e7ba6ad8f782a7d61b883.tar.gz minetest-f2cccf8da72c39299c8e7ba6ad8f782a7d61b883.tar.bz2 minetest-f2cccf8da72c39299c8e7ba6ad8f782a7d61b883.zip | |
Improve self-shadowing based on light/normal angle
Add compatibility with colored shadows.
Diffstat (limited to 'client')
| -rw-r--r-- | client/shaders/nodes_shader/opengl_fragment.glsl | 8 | ||||
| -rw-r--r-- | client/shaders/object_shader/opengl_fragment.glsl | 8 |
2 files changed, 12 insertions, 4 deletions
diff --git a/client/shaders/nodes_shader/opengl_fragment.glsl b/client/shaders/nodes_shader/opengl_fragment.glsl index 762a676c6..d3194090c 100644 --- a/client/shaders/nodes_shader/opengl_fragment.glsl +++ b/client/shaders/nodes_shader/opengl_fragment.glsl @@ -514,8 +514,12 @@ void main(void) // Power ratio was measured on torches in MTG (brightness = 14). float adjusted_night_ratio = pow(max(0.0, nightRatio), 0.6); - if (f_normal_length != 0 && cosLight < 0.035) { - shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, 0.035)/0.035); + // Apply self-shadowing when light falls at a narrow angle to the surface + // Cosine of the cut-off angle. + const float self_shadow_cutoff_cosine = 0.035; + if (f_normal_length != 0 && cosLight < self_shadow_cutoff_cosine) { + shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine); + shadow_color = mix(vec3(0.0), shadow_color, min(cosLight, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine); } shadow_int *= f_adj_shadow_strength; diff --git a/client/shaders/object_shader/opengl_fragment.glsl b/client/shaders/object_shader/opengl_fragment.glsl index 0b9dbc996..674b6a739 100644 --- a/client/shaders/object_shader/opengl_fragment.glsl +++ b/client/shaders/object_shader/opengl_fragment.glsl @@ -507,8 +507,12 @@ void main(void) // Power ratio was measured on torches in MTG (brightness = 14). float adjusted_night_ratio = pow(nightRatio, 0.6); - if (f_normal_length != 0 && cosLight < 0.035) { - shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, 0.035)/0.035); + // cosine of the normal-to-light angle when + // we start to apply self-shadowing + const float self_shadow_cutoff_cosine = 0.14; + if (f_normal_length != 0 && cosLight < self_shadow_cutoff_cosine) { + shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine); + shadow_color = mix(vec3(0.0), shadow_color, min(cosLight, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine); } shadow_int *= f_adj_shadow_strength; |