Fixed a grass being too dark in some places.

It seems to be an inconsistency in using sRGB rendering.

data/shaders/transparentfog.frag

@@ -23,7 +23,13 @@ void main()
 #ifdef Use_Bindless_Texture
     diffusecolor.xyz = pow(diffusecolor.xyz, vec3(2.2));
 #endif
+
+#ifndef GL_ES
     diffusecolor.xyz *= pow(color.xyz, vec3(2.2));
+#else
+    diffusecolor.xyz *= pow(color.xyz, vec3(1.0 / 2.2));
+#endif
+
     diffusecolor.a *= color.a;
     vec3 tmp = vec3(gl_FragCoord.xy / screen, gl_FragCoord.z);
     tmp = 2. * tmp - 1.;