WIP

shaders/sphere.frag

@@ -3,17 +3,17 @@
 // fragment shaders don't have a default precision so we need
 // to pick one. mediump is a good default. It means "medium precision"
 precision highp float;
-
+in vec4 fragNormal;
 in vec3 v_surfaceToLight;
 
 uniform vec4 u_color;
+uniform vec3 u_light;
 uniform vec3 u_lightPos;
 
 out vec4 outColor;
 
 void main() {
-    vec3 surfaceToLightDirection = normalize(v_surfaceToLight);
+    float light = max(dot(fragNormal.xyz, normalize(v_surfaceToLight).xyz), u_light.x);
     outColor = u_color;
-    float light = 1.0;
-    //outColor.rgb *= surfaceToLightDirection;
+    outColor.rgb *= light;
 }

shaders/sphere.vert

@@ -1,12 +1,11 @@
 #version 300 es
 
 in vec4 a_position;
-uniform mat4 u_world;
 uniform mat4 u_matrix;
 uniform vec3 u_lightPos;
-uniform vec3 u_light;
 uniform float u_pointSize;
 
+out vec4 fragNormal;
 out vec3 v_surfaceToLight;
 
 void main() {
@@ -14,8 +13,7 @@ void main() {
     vec4 pos = a_position * u_matrix;
     gl_Position = pos;
     gl_PointSize = u_pointSize;
-
-    vec3 surfaceWorldPosition = (u_world * pos).xyz;
-
+    fragNormal = normalize(pos);
+    vec3 surfaceWorldPosition = (u_matrix * pos).xyz;
     v_surfaceToLight = u_lightPos - surfaceWorldPosition;
 }