From dfc4baaa353d4aaa46068016f69dce44ad754ecb Mon Sep 17 00:00:00 2001 From: Ray Date: Sun, 15 Jul 2018 20:04:12 +0200 Subject: Added new example: text_font_sdf --- examples/text/resources/shaders/sdf.fs | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 examples/text/resources/shaders/sdf.fs (limited to 'examples/text/resources/shaders') diff --git a/examples/text/resources/shaders/sdf.fs b/examples/text/resources/shaders/sdf.fs new file mode 100644 index 00000000..44d33e9b --- /dev/null +++ b/examples/text/resources/shaders/sdf.fs @@ -0,0 +1,26 @@ +#version 330 + +// Input vertex attributes (from vertex shader) +in vec2 fragTexCoord; +in vec4 fragColor; + +// Input uniform values +uniform sampler2D texture0; +uniform vec4 colDiffuse; + +// Output fragment color +out vec4 finalColor; + +// NOTE: Add here your custom variables +const float smoothing = 1.0/16.0; + +void main() +{ + // Texel color fetching from texture sampler + // NOTE: Calculate alpha using signed distance field (SDF) + float distance = texture(texture0, fragTexCoord).a; + float alpha = smoothstep(0.5 - smoothing, 0.5 + smoothing, distance); + + // Calculate final fragment color + finalColor = vec4(fragColor.rgb, fragColor.a*alpha); +} -- cgit v1.2.3