added bloom shader

android/assets/shaders/gaussian_blur.fsh

@@ -0,0 +1,33 @@
+#version 330 core
+#ifdef GL_ES
+#define LOWP lowp
+precision mediump float;
+#else
+#define LOWP
+#endif
+
+varying LOWP vec4 vColor;
+varying vec2 vTexCoord;
+
+uniform int horizontal;
+uniform sampler2D u_texture;
+uniform float weight[5] = float[] (0.227027, 0.1945946, 0.1216216, 0.054054, 0.016216);
+
+void main() {
+	vec2 tex_offset = 1.0 /textureSize(u_texture, 0);
+	vec3 result = texture(u_texture, vTexCoord).rgb * weight[0];
+	
+	if (horizontal == 1) {
+		for (int i = 1; i < 5; ++i) {
+			result += texture(u_texture, vTexCoord + vec2(tex_offset.x *i, 0.0)).rgb * weight[i];
+			result += texture(u_texture, vTexCoord - vec2(tex_offset.x *i, 0.0)).rgb * weight[i];
+		}
+	} else {
+		for (int i = 1; i < 5; ++i) {
+            result += texture(u_texture, vTexCoord + vec2(0.0, tex_offset.y * i)).rgb * weight[i];
+            result += texture(u_texture, vTexCoord - vec2(0.0, tex_offset.y * i)).rgb * weight[i];
+		}
+	}
+	
+	gl_FragColor = vec4(result, 1.0);
+}