Experimenting with light

core/assets/shaders/light.fragment.glsl

@@ -0,0 +1,22 @@
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+#define steprad 0.13
+
+uniform sampler2D u_texture;
+uniform vec4 u_ambient;
+
+varying vec4 v_color;
+varying vec2 v_texCoord;
+
+float stepped(float inp){
+    return inp;
+}
+
+void main(){
+	vec4 color = texture2D(u_texture, v_texCoord.xy);
+	float rounded = stepped(color.a);
+	gl_FragColor = clamp(vec4(mix(u_ambient.rgb, color.rgb, rounded), u_ambient.a - rounded), 0.0, 1.0);
+}