medfall

commit fcbe68c1337ee1d775e40d0f9f071141b16c01e8
parent 23a8978e84489fb13d966c2319e1c9fd22bd58a0
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Fri Jul 21 00:03:53 +0300

Maybe better dithering

Diffstat:
shaders/terrain.glsl
 | 
5
+++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/shaders/terrain.glsl b/shaders/terrain.glsl
@@ -41,7 +41,8 @@ uniform samplerBuffer point_light_colours;
 
 vec3 noise( vec2 uv ) {
 	vec3 dither = vec3( dot( vec2( 171.0, 231.0 ), uv ) );
-	return fract( dither / vec3( 103.0, 71.0, 97.0 ) ) - vec3( 0.5, 0.5, 0.5 );
+	dither = fract( dither / vec3( 103.0, 71.0, 97.0 ) ) - vec3( 0.5, 0.5, 0.5 );
+	return ( dither / 256.0 ) * 0.375;
 }
 
 void main() {
@@ -102,7 +103,7 @@ void main() {
 
 	vec2 ndc = v2f.screen_position.xy / v2f.screen_position.w;
 	// seems to produce good results even at other resolutions
-	vec3 dither_noise = noise( ndc * vec2( 1920, 1080 ) ) / 512.0;
+	vec3 dither_noise = noise( ndc * vec2( 1920, 1080 ) );
 
 	colour = vec4( mix( c, fog_colour, fog_t ) + dither_noise, 1.0 );
 }