diff options
Diffstat (limited to 'src/quick/scenegraph/shaders_ng/loqsubpixeldistancefieldtext.frag')
-rw-r--r-- | src/quick/scenegraph/shaders_ng/loqsubpixeldistancefieldtext.frag | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/quick/scenegraph/shaders_ng/loqsubpixeldistancefieldtext.frag b/src/quick/scenegraph/shaders_ng/loqsubpixeldistancefieldtext.frag new file mode 100644 index 0000000000..08b2ce5187 --- /dev/null +++ b/src/quick/scenegraph/shaders_ng/loqsubpixeldistancefieldtext.frag @@ -0,0 +1,29 @@ +#version 440 + +layout(location = 0) in vec3 sampleNearLeft; +layout(location = 1) in vec3 sampleNearRight; + +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; + // up to this point it must match distancefieldtext + float fontScale; + vec4 vecDelta; +} ubuf; + +void main() +{ + vec2 n; + n.x = textureProj(_qt_texture, sampleNearLeft).r; + n.y = textureProj(_qt_texture, sampleNearRight).r; + n = smoothstep(ubuf.alphaMin, ubuf.alphaMax, n); + float c = 0.5 * (n.x + n.y); + fragColor = vec4(n.x, c, n.y, c) * ubuf.color.w; +} |