online multiplayer chess game (note server currently down)
Diffstat (limited to 'ui/chat/grayscale.shader')
| -rw-r--r-- | ui/chat/grayscale.shader | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ui/chat/grayscale.shader b/ui/chat/grayscale.shader new file mode 100644 index 0000000..3188c10 --- /dev/null +++ b/ui/chat/grayscale.shader @@ -0,0 +1,10 @@ +shader_type canvas_item; +uniform float saturation: hint_range(0.0, 1.0) = 0.0; +uniform float scale: hint_range(0.0, 1.0) = 1.0; +const float pivot = 0.5; + +void fragment() { + vec4 tex_color = texture(TEXTURE, (UV - pivot) * (2.0 - scale) + pivot); + COLOR.rgb = mix(vec3(dot(tex_color.rgb, vec3(0.299, 0.587, 0.114))), tex_color.rgb, saturation); // magic numbers + COLOR.a = tex_color.a; +}
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