#pragma header
#define PI 3.14159265359

int steps = 16;
int stepsInside = 2;
float strength = 0.0075;
vec4 getColor(vec2 pos) {
	if (pos.x < 0) pos.x = 0;
	else if (pos.x > 1.0 - (1.0 / openfl_TextureSize.x)) pos.x = 1.0 - (1.0 / openfl_TextureSize.x);
	if (pos.y < 0) pos.y = 0;
	else if (pos.y > 1.0 - (1.0 / openfl_TextureSize.y)) pos.y = 1.0 - (1.0 / openfl_TextureSize.y);
	// return textureCam(bitmap, pos);
	return flixel_texture2D(bitmap, pos);
}
void main() {
	// vec2 camPos = getCamPos(openfl_TextureCoordv);
	vec2 camPos = openfl_TextureCoordv;
	if (camPos.x < 0 || camPos.x > 1 || camPos.y < 0 || camPos.y > 1)
		return;

	vec4 color = getColor(camPos);
	float fsteps = steps;
	for(float inside = 1; inside < stepsInside+1; inside++) {
		for(int i = 0; i < steps; i++) {
			float fi = i;
			color += getColor(camPos + vec2(strength * (inside / stepsInside) * cos(fi / fsteps * (PI * 2.0)), strength * (inside / stepsInside) * sin(fi / fsteps * (PI * 2.0))));
		}
	}

	color /= steps * stepsInside;
	gl_FragColor = color;
}