small racing game im working on
Diffstat (limited to 'ui/editor/outline.gdshader')
| -rw-r--r-- | ui/editor/outline.gdshader | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/ui/editor/outline.gdshader b/ui/editor/outline.gdshader new file mode 100644 index 0000000..4a75622 --- /dev/null +++ b/ui/editor/outline.gdshader @@ -0,0 +1,21 @@ +shader_type canvas_item; + +uniform vec4 line_color : source_color = vec4(1); +uniform float line_thickness : hint_range(0, 10) = 1.0; + +void fragment() { + vec2 size = TEXTURE_PIXEL_SIZE * line_thickness; + + float outline = texture(TEXTURE, UV + vec2(-size.x, 0)).a; + outline += texture(TEXTURE, UV + vec2(0, size.y)).a; + outline += texture(TEXTURE, UV + vec2(size.x, 0)).a; + outline += texture(TEXTURE, UV + vec2(0, -size.y)).a; + outline += texture(TEXTURE, UV + vec2(-size.x, size.y)).a; + outline += texture(TEXTURE, UV + vec2(size.x, size.y)).a; + outline += texture(TEXTURE, UV + vec2(-size.x, -size.y)).a; + outline += texture(TEXTURE, UV + vec2(size.x, -size.y)).a; + outline = min(outline, 1.0); + + vec4 color = texture(TEXTURE, UV); + COLOR = mix(color, line_color, outline - color.a); +}
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