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author | Mitch Curtis <mitch.curtis@qt.io> | 2021-07-28 11:21:25 +0200 |
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committer | Mitch Curtis <mitch.curtis@qt.io> | 2021-07-28 11:21:25 +0200 |
commit | 16436239cd35ba7346b89a1f57d5b29dc786f4c6 (patch) | |
tree | 7e9011d0dfdda5ef9ccc302dae69ab3e5ba4b8cc /src/quickcontrols2/material/shaders/RectangularGlow.frag | |
parent | 5a5b9c2344b961e984a2c860bb0c33022d641f32 (diff) | |
parent | 89d3486ad18d782a8141037a2bffb7992118cc78 (diff) |
Merge qtquickcontrols2 into qtdeclarative
Task-number: QTBUG-95173
Change-Id: I2cf31e30127e8cc2f10304cabf4ff7f5050633b8
Diffstat (limited to 'src/quickcontrols2/material/shaders/RectangularGlow.frag')
-rw-r--r-- | src/quickcontrols2/material/shaders/RectangularGlow.frag | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/quickcontrols2/material/shaders/RectangularGlow.frag b/src/quickcontrols2/material/shaders/RectangularGlow.frag new file mode 100644 index 0000000000..40bab5806c --- /dev/null +++ b/src/quickcontrols2/material/shaders/RectangularGlow.frag @@ -0,0 +1,19 @@ +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; +} |