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Diffstat (limited to 'src/effects/shaders_ng/thresholdmask.frag')
-rw-r--r-- | src/effects/shaders_ng/thresholdmask.frag | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/effects/shaders_ng/thresholdmask.frag b/src/effects/shaders_ng/thresholdmask.frag new file mode 100644 index 0000000..7740e7e --- /dev/null +++ b/src/effects/shaders_ng/thresholdmask.frag @@ -0,0 +1,23 @@ +#version 440 + +layout(location = 0) in vec2 qt_TexCoord0; +layout(location = 0) out vec4 fragColor; + +layout(std140, binding = 0) uniform buf { + // qt_Matrix and qt_Opacity must always be both present + // if the built-in vertex shader is used. + mat4 qt_Matrix; + float qt_Opacity; + float threshold; + float spread; +}; + +layout(binding = 1) uniform sampler2D source; +layout(binding = 2) uniform sampler2D maskSource; + +void main() +{ + vec4 colorFragment = texture(source, qt_TexCoord0.st); + vec4 maskFragment = texture(maskSource, qt_TexCoord0.st); + fragColor = colorFragment * smoothstep(threshold * (1.0 + spread) - spread, threshold * (1.0 + spread), maskFragment.a) * qt_Opacity; +} |