Light posts

1 files changed, 18 insertions, 4 deletions

diff --git a/test.frag b/test.frag
index 083fc0b..80c741b 100644
--- a/test.frag
+++ b/test.frag
@@ -1,17 +1,22 @@
-#version 130

+#version 120

 uniform sampler2D sampler;

 

 uniform int numLight;

-uniform vec2 lightLocation[255];

+uniform vec2 lightLocation[1024];

 uniform vec3 lightColor;

 uniform float amb;

 

+float b = .0005;

+float minLight = .05;

+float radius = sqrt(1.0 / (b * minLight));

+

 void main(){

 	vec4 color = vec4(0.0f,0.0f,0.0f,0.0f);

 	for(int i = 0; i < numLight; i++){

 		vec2 loc = lightLocation[i];

 		float dist = length(loc - gl_FragCoord.xy);

-		float attenuation=1.0/(1.0+0.01*dist+0.00000000001*dist*dist);

+		//float attenuation=1.0/(1.0+0.01*dist+0.00000000001*dist*dist);

+		float attenuation = clamp(1.0 - dist*dist/(radius*radius), 0.0, 1.0); attenuation *= attenuation;

 

 		color += vec4(attenuation, attenuation, attenuation, 1.0f) * vec4(lightColor, 1.0f);

 	}

@@ -20,4 +25,13 @@ void main(){
 

 	color += vec4(amb,amb,amb,1.0f+amb);

 	gl_FragColor = tex * vec4(color)*tex.a;

-}
\ No newline at end of file
+}

+

+/*b values

+	.002		10

+	.008 		50

+  	.0005		200

+ 	.00008		500

+  	.00002		1000

+	.00005		2000

+*/
\ No newline at end of file