Better sun

core/assets/shaders/sun.frag

@@ -1,16 +0,0 @@
-#ifdef GL_ES
-precision mediump float;
-precision lowp int;
-#endif
-
-#define step 0.5
-
-const int MAX_COLORS = 10;
-
-varying float v_height;
-
-uniform sampler2D u_colors;
-
-void main(){
-    gl_FragColor = texture2D(u_colors, vec2(v_height, 0.0));
-}

core/assets/shaders/sun.vert

@@ -1,92 +0,0 @@
-#ifdef GL_ES
-precision mediump float;
-precision lowp int;
-#endif
-
-attribute vec4 a_position;
-attribute vec3 a_normal;
-
-uniform mat4 u_proj;
-uniform mat4 u_trans;
-
-uniform float u_time;
-uniform int u_octaves;
-uniform float u_falloff;
-uniform float u_scale;
-uniform float u_power;
-uniform float u_spread;
-
-uniform float u_magnitude;
-uniform float u_seed;
-
-varying float v_height;
-
-float rand(vec2 co){
-    return fract(sin(dot(co.xy, vec2(12.9898, 78.233))) * 43758.5453);
-}
-
-vec4 permute(vec4 x){ return mod(((x*34.0)+1.0)*x, 289.0); }
-float permute(float x){ return floor(mod(((x*34.0)+1.0)*x, 289.0)); }
-vec4 taylorInvSqrt(vec4 r){ return 1.79284291400159 - 0.85373472095314 * r; }
-float taylorInvSqrt(float r){ return 1.79284291400159 - 0.85373472095314 * r; }
-
-vec4 grad4(float j, vec4 ip){
-    const vec4 ones = vec4(1.0, 1.0, 1.0, -1.0);
-    vec4 p, s;
-    p.xyz = floor(fract (vec3(j) * ip.xyz) * 7.0) * ip.z - 1.0;
-    p.w = 1.5 - dot(abs(p.xyz), ones.xyz);
-    s = vec4(lessThan(p, vec4(0.0)));
-    p.xyz = p.xyz + (s.xyz*2.0 - 1.0) * s.www;
-    return p;
-}
-
-float snoise(vec4 v){
-    const vec2 C = vec2(0.138196601125010504, 0.309016994374947451);
-    vec4 i = floor(v + dot(v, C.yyyy));
-    vec4 x0 = v - i + dot(i, C.xxxx);
-    vec4 i0;
-    vec3 isX = step(x0.yzw, x0.xxx);
-    vec3 isYZ = step(x0.zww, x0.yyz);
-    i0.x = isX.x + isX.y + isX.z;
-    i0.yzw = 1.0 - isX;
-    i0.y += isYZ.x + isYZ.y;
-    i0.zw += 1.0 - isYZ.xy;
-    i0.z += isYZ.z;
-    i0.w += 1.0 - isYZ.z;
-    vec4 i3 = clamp(i0, 0.0, 1.0);
-    vec4 i2 = clamp(i0-1.0, 0.0, 1.0);
-    vec4 i1 = clamp(i0-2.0, 0.0, 1.0);
-    vec4 x1 = x0 - i1 + 1.0 * C.xxxx;
-    vec4 x2 = x0 - i2 + 2.0 * C.xxxx;
-    vec4 x3 = x0 - i3 + 3.0 * C.xxxx;
-    vec4 x4 = x0 - 1.0 + 4.0 * C.xxxx;
-    i = mod(i, 289.0);
-    float j0 = permute(permute(permute(permute(i.w) + i.z) + i.y) + i.x);
-    vec4 j1 = permute(permute(permute(permute (
-    i.w + vec4(i1.w, i2.w, i3.w, 1.0))
-    + i.z + vec4(i1.z, i2.z, i3.z, 1.0))
-    + i.y + vec4(i1.y, i2.y, i3.y, 1.0))
-    + i.x + vec4(i1.x, i2.x, i3.x, 1.0));
-    vec4 ip = vec4(1.0/294.0, 1.0/49.0, 1.0/7.0, 0.0);
-    vec4 p0 = grad4(j0, ip);
-    vec4 p1 = grad4(j1.x, ip);
-    vec4 p2 = grad4(j1.y, ip);
-    vec4 p3 = grad4(j1.z, ip);
-    vec4 p4 = grad4(j1.w, ip);
-    vec4 norm = taylorInvSqrt(vec4(dot(p0, p0), dot(p1, p1), dot(p2, p2), dot(p3, p3)));
-    p0 *= norm.x;
-    p1 *= norm.y;
-    p2 *= norm.z;
-    p3 *= norm.w;
-    p4 *= taylorInvSqrt(dot(p4, p4));
-    vec3 m0 = max(0.6 - vec3(dot(x0, x0), dot(x1, x1), dot(x2, x2)), 0.0);
-    vec2 m1 = max(0.6 - vec2(dot(x3, x3), dot(x4, x4)), 0.0);
-    m0 = m0 * m0;
-    m1 = m1 * m1;
-    return 49.0 * (dot(m0*m0, vec3(dot(p0, x0), dot(p1, x1), dot(p2, x2)))+ dot(m1*m1, vec2(dot(p3, x3), dot(p4, x4))));
-}
-
-void main(){
-    v_height = clamp((snoise(vec4(a_position.xyz, u_time + u_seed*2.0) / u_scale) + 0.7) / 2.0, 0.0, 1.0);
-    gl_Position = u_proj * u_trans * a_position;
-}

core/assets/shaders/unlit.vert

@@ -0,0 +1,13 @@
+attribute vec4 a_position;
+attribute vec3 a_normal;
+attribute vec4 a_color;
+
+uniform mat4 u_proj;
+uniform mat4 u_trans;
+
+varying vec4 v_col;
+
+void main(){
+	v_col = a_color;
+    gl_Position = u_proj * u_trans * a_position;
+}