diff options
Diffstat (limited to 'src/effects/shaders/rectangularglow.frag')
-rw-r--r-- | src/effects/shaders/rectangularglow.frag | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/src/effects/shaders/rectangularglow.frag b/src/effects/shaders/rectangularglow.frag deleted file mode 100644 index 40bab58..0000000 --- a/src/effects/shaders/rectangularglow.frag +++ /dev/null @@ -1,19 +0,0 @@ -uniform highp float qt_Opacity; -uniform mediump float relativeSizeX; -uniform mediump float relativeSizeY; -uniform mediump float spread; -uniform lowp vec4 color; -varying highp vec2 qt_TexCoord0; - -highp float linearstep(highp float e0, highp float e1, highp float x) { - return clamp((x - e0) / (e1 - e0), 0.0, 1.0); -} - -void main() { - lowp 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)); - - highp float spreadMultiplier = linearstep(spread, 1.0 - spread, alpha); - gl_FragColor = color * qt_Opacity * spreadMultiplier * spreadMultiplier; -} |