diff options
Diffstat (limited to 'src/quick/scenegraph/shaders_ng/outlinedtext_a.frag')
-rw-r--r-- | src/quick/scenegraph/shaders_ng/outlinedtext_a.frag | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/quick/scenegraph/shaders_ng/outlinedtext_a.frag b/src/quick/scenegraph/shaders_ng/outlinedtext_a.frag new file mode 100644 index 0000000000..9a3d8cf5ed --- /dev/null +++ b/src/quick/scenegraph/shaders_ng/outlinedtext_a.frag @@ -0,0 +1,33 @@ +#version 440 + +layout(location = 0) in vec2 sampleCoord; +layout(location = 1) in vec2 sCoordUp; +layout(location = 2) in vec2 sCoordDown; +layout(location = 3) in vec2 sCoordLeft; +layout(location = 4) in vec2 sCoordRight; + +layout(location = 0) out vec4 fragColor; + +layout(binding = 1) uniform sampler2D _qt_texture; + +layout(std140, binding = 0) uniform buf { + // must match styledtext + mat4 matrix; + vec4 color; + vec2 textureScale; + float dpr; + vec4 styleColor; + vec2 shift; +} ubuf; + +void main() +{ + float glyph = texture(_qt_texture, sampleCoord).a; // take .a instead of .r + float outline = clamp(clamp(texture(_qt_texture, sCoordUp).a + + texture(_qt_texture, sCoordDown).a + + texture(_qt_texture, sCoordLeft).a + + texture(_qt_texture, sCoordRight).a, + 0.0, 1.0) - glyph, + 0.0, 1.0); + fragColor = outline * ubuf.styleColor + glyph * ubuf.color; +} |