diff options
Diffstat (limited to 'drivers/gles3/shaders/sky.glsl')
| -rw-r--r-- | drivers/gles3/shaders/sky.glsl | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gles3/shaders/sky.glsl b/drivers/gles3/shaders/sky.glsl index 21f01d2a8f..4c0fe47f6b 100644 --- a/drivers/gles3/shaders/sky.glsl +++ b/drivers/gles3/shaders/sky.glsl @@ -104,6 +104,15 @@ uniform uint directional_light_count; layout(location = 0) out vec4 frag_color; +#ifdef USE_DEBANDING +// https://www.iryoku.com/next-generation-post-processing-in-call-of-duty-advanced-warfare +vec3 interleaved_gradient_noise(vec2 pos) { + const vec3 magic = vec3(0.06711056f, 0.00583715f, 52.9829189f); + float res = fract(magic.z * fract(dot(pos, magic.xy))) * 2.0 - 1.0; + return vec3(res, -res, res) / 255.0; +} +#endif + void main() { vec3 cube_normal; cube_normal.z = -1.0; @@ -168,4 +177,8 @@ void main() { frag_color.rgb = color; frag_color.a = alpha; + +#ifdef USE_DEBANDING + frag_color.rgb += interleaved_gradient_noise(gl_FragCoord.xy); +#endif } |