gtk2/gsk/resources/glsl/border.fs.glsl
Timm Bäder 0a7880110e gl renderer: Fix clipped borders
Stop abusing the clip rect for borders.
2018-03-15 18:11:57 +01:00

31 lines
763 B
GLSL

uniform vec4 u_color;
uniform vec4 u_widths;
uniform vec4 u_outline;
uniform vec4 u_corner_widths;
uniform vec4 u_corner_heights;
void main() {
vec4 bounds = u_outline;
bounds.z = bounds.x + bounds.z;
bounds.w = bounds.y + bounds.w;
vec4 f = gl_FragCoord;
f.x += u_viewport.x;
f.y = (u_viewport.y + u_viewport.w) - f.y;
RoundedRect routside = RoundedRect (bounds, u_corner_widths, u_corner_heights);
RoundedRect rinside = rounded_rect_shrink (routside, u_widths);
float alpha = clamp (rounded_rect_coverage (routside, f.xy) -
rounded_rect_coverage (rinside, f.xy),
0.0, 1.0);
/* Pre-multiply */
vec4 color = u_color;
color.rgb *= color.a;
setOutputColor (color * alpha * u_alpha);
}