Create reload.fs

examples/shaders/resources/shaders/glsl100/reload.fs

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+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;           // Texture coordinates (sampler2D)
+varying vec4 fragColor;              // Tint color
+
+// Uniform inputs
+uniform vec2 resolution;        // Viewport resolution (in pixels)
+uniform vec2 mouse;             // Mouse pixel xy coordinates
+uniform float time;             // Total run time (in secods)
+
+// Draw circle
+vec4 DrawCircle(vec2 fragCoord, vec2 position, float radius, vec3 color)
+{
+	float d = length(position - fragCoord) - radius;
+	float t = clamp(d, 0.0, 1.0);
+	return vec4(color, 1.0 - t);
+}
+
+void main()
+{
+	vec2 fragCoord = gl_FragCoord.xy;
+	vec2 position = vec2(mouse.x, resolution.y - mouse.y);
+	float radius = 40.0;
+
+    // Draw background layer
+    vec4 colorA = vec4(0.2,0.2,0.8, 1.0);
+    vec4 colorB = vec4(1.0,0.7,0.2, 1.0);
+	vec4 layer1 = mix(colorA, colorB, abs(sin(time*0.1)));
+
+	// Draw circle layer
+	vec3 color = vec3(0.9, 0.16, 0.21);
+	vec4 layer2 = DrawCircle(fragCoord, position, radius, color);
+	
+	// Blend the two layers
+	gl_FragColor = mix(layer1, layer2, layer2.a);
+}