1 files changed, 32 insertions, 0 deletions
diff --git a/src/quick/scenegraph/shaders/hiqsubpixeldistancefieldtext_core.frag b/src/quick/scenegraph/shaders/hiqsubpixeldistancefieldtext_core.frag
new file mode 100644
index 0000000000..cf6ba2b8d9
--- /dev/null
+++ b/src/quick/scenegraph/shaders/hiqsubpixeldistancefieldtext_core.frag
@@ -0,0 +1,32 @@
+#version 150 core
+
+in vec2 sampleCoord;
+in vec3 sampleFarLeft;
+in vec3 sampleNearLeft;
+in vec3 sampleNearRight;
+in vec3 sampleFarRight;
+
+out vec4 fragColor;
+
+uniform sampler2D _qt_texture;
+uniform vec4 color;
+uniform float alphaMin;
+uniform float alphaMax;
+
+void main()
+{
+    vec4 n;
+    n.x = textureProj(_qt_texture, sampleFarLeft).r;
+    n.y = textureProj(_qt_texture, sampleNearLeft).r;
+    float c = texture(_qt_texture, sampleCoord).r;
+    n.z = textureProj(_qt_texture, sampleNearRight).r;
+    n.w = textureProj(_qt_texture, sampleFarRight).r;
+
+    vec2 d = min(abs(n.yw - n.xz) * 2., 0.67);
+    vec2 lo = mix(vec2(alphaMin), vec2(0.5), d);
+    vec2 hi = mix(vec2(alphaMax), vec2(0.5), d);
+    n = smoothstep(lo.xxyy, hi.xxyy, n);
+    c = smoothstep(lo.x + lo.y, hi.x + hi.y, 2. * c);
+
+    fragColor = vec4(0.333 * (n.xyz + n.yzw + c), c) * color.w;
+}
+\ No newline at end of file