diff options
Diffstat (limited to 'src/imports/controls/material/shaders/+glslcore/RectangularGlow.frag')
-rw-r--r-- | src/imports/controls/material/shaders/+glslcore/RectangularGlow.frag | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/imports/controls/material/shaders/+glslcore/RectangularGlow.frag b/src/imports/controls/material/shaders/+glslcore/RectangularGlow.frag new file mode 100644 index 00000000..432d86b5 --- /dev/null +++ b/src/imports/controls/material/shaders/+glslcore/RectangularGlow.frag @@ -0,0 +1,25 @@ +#version 150 + +uniform float qt_Opacity; +uniform float relativeSizeX; +uniform float relativeSizeY; +uniform float spread; +uniform vec4 color; + +in vec2 qt_TexCoord0; +out vec4 fragColor; + +float linearstep(float e0, float e1, float x) +{ + return clamp((x - e0) / (e1 - e0), 0.0, 1.0); +} + +void main() +{ + float alpha = + smoothstep(0.0, relativeSizeX, 0.5 - abs(0.5 - qt_TexCoord0.x)) * + smoothstep(0.0, relativeSizeY, 0.5 - abs(0.5 - qt_TexCoord0.y)); + + float spreadMultiplier = linearstep(spread, 1.0 - spread, alpha); + fragColor = color * qt_Opacity * spreadMultiplier * spreadMultiplier; +} |