It looks like ARM MALI GPU does not support opengl es 2.0 specification!!!
Mali GPU Offline Shader Compiler
http://www.malideveloper.com/developer-resources/tools/offline-shader-compiler.php
gives same error - function texture2D not supported on target
on next vertex shader code
----------------------------------------------------------------
attribute vec4 coord;
uniform mat4 camera;
uniform sampler2D filter_tex;
void main()
{
mediump vec2 uv_coord = vec2(1.0,1.0);
mediump vec4 dx = texture2D(filter_tex, uv_coord);
gl_Position = camera * coord;
}
----------------------------------------------------------------
but opengl es 2.0 specification says:
Texture lookup functions are available to both vertex and fragment shaders
and texture2D is texture lookup function.
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