diff options
Diffstat (limited to 'src/quick/scenegraph/shaders_ng/distancefieldtext_fwidth.frag')
-rw-r--r-- | src/quick/scenegraph/shaders_ng/distancefieldtext_fwidth.frag | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/quick/scenegraph/shaders_ng/distancefieldtext_fwidth.frag b/src/quick/scenegraph/shaders_ng/distancefieldtext_fwidth.frag new file mode 100644 index 0000000000..a698c19550 --- /dev/null +++ b/src/quick/scenegraph/shaders_ng/distancefieldtext_fwidth.frag @@ -0,0 +1,21 @@ +#version 440 + +layout(location = 0) in vec2 sampleCoord; +layout(location = 0) out vec4 fragColor; + +layout(binding = 1) uniform sampler2D _qt_texture; + +layout(std140, binding = 0) uniform buf { + mat4 matrix; + vec2 textureScale; + vec4 color; + float alphaMin; + float alphaMax; +} ubuf; + +void main() +{ + float distance = texture(_qt_texture, sampleCoord).r; + float f = fwidth(distance); + fragColor = ubuf.color * smoothstep(max(0.0, 0.5 - f), min(1.0, 0.5 + f), distance); +} |