fix shaders format

data/shaders/texture-blend.glsl

@@ -1,29 +1,38 @@
 [[vertex]]
+
 uniform mat4 mvp;
+
 in vec4 pos;
 in vec2 uvs;
 out vec2 uv;
+
 void main()
 {
     uv = uvs;
     gl_Position = mvp * vec4(pos.xyz, 1.0);
-};
+}
 
 [[fragment]]
+
 #include "include/ext-fb-fetch.glsl"
 #include "include/blend.glsl"
+
 uniform sampler2D tex;
 uniform sampler2D tex_alpha;
 uniform sampler2D tex_bg;
 uniform mediump float alpha;
 uniform int blend_mode;
+
 in mediump vec2 uv;
 #if defined(GL_EXT_shader_framebuffer_fetch)
     inout highp vec4 frag;
 #else
     out mediump vec4 frag;
 #endif
-void main() {
+
+void main()
+{
+    // if available use the extension
 #if defined(GL_EXT_shader_framebuffer_fetch)
     highp vec4 bg = frag;
 #elif defined(GL_ARM_shader_framebuffer_fetch)
@@ -31,8 +40,13 @@ void main() {
 #else
     mediump vec4 bg = texture(tex_bg, uv);
 #endif
+
     mediump vec4 fg = vec4(texture(tex, uv).rgb, texture(tex_alpha, uv).a);
-    if (fg.a == 0.0) { frag = bg; return; }
+    if (fg.a == 0.0)
+    {
+        frag = bg;
+        return;
+    }
     mediump vec4 blended = blend(bg, fg, blend_mode);
     frag = vec4(blended.rgb, blended.a * alpha);
-};
+}