From acc6f3b285f058104fd6431bed2c4cfe4dc05a58 Mon Sep 17 00:00:00 2001
From: Juan Linietsky <reduzio@gmail.com>
Date: Sat, 21 Mar 2015 00:43:33 -0300
Subject: signed distance field font support

---
 drivers/gles2/shaders/canvas.glsl | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'drivers/gles2/shaders')

diff --git a/drivers/gles2/shaders/canvas.glsl b/drivers/gles2/shaders/canvas.glsl
index 0e19736fd5..e6d2569977 100644
--- a/drivers/gles2/shaders/canvas.glsl
+++ b/drivers/gles2/shaders/canvas.glsl
@@ -191,8 +191,16 @@ void main() {
 	vec3 normal = vec3(0.0,0.0,1.0);
 #endif
 
-
+#ifdef USE_DISTANCE_FIELD
+	const float smoothing = 1.0/32.0;
+	float distance = texture2D(texture, uv_interp).a;
+	color.a = smoothstep(0.5 - smoothing, 0.5 + smoothing, distance);
+#else
 	color *= texture2D( texture,  uv_interp );
+
+#endif
+
+
 #if defined(ENABLE_SCREEN_UV)
 	vec2 screen_uv = gl_FragCoord.xy*screen_uv_mult;
 #endif
-- 
cgit v1.2.3