two_textures.x3dv GLSL problem on Intel(R) HD Graphics 4400

[michaliskambi]

Reported originally in #3 by @andreasplesch .

Reproducible on

Version string: 4.3.0 - Build 20...
Renderer: Intel(R) HD Graphics 4400

(the exact GPU details in #3). Not reproducible with other GPU like Michalis NVidia:

Version string: 4.5.0 NVIDIA 384.98
Renderer: GeForce GTS 450/PCIe/SSE2

The error:

two_textures.x3dv:
view3dscene: VRML/X3D warning: Cannot use GLSL shader for shape "IndexedFaceSet": Fragment shader not compiled:
WARNING: 0:4: '' : #version directive missing
ERROR: 0:12: 'texture2D' : no matching overloaded function found (using implicit conversion)
ERROR: 0:14: 'texture2D' : no matching overloaded function found (using implicit conversion)
ERROR: 0:12: 'assign' : cannot convert from 'const mediump float' to 'FragColor 4-component vector of mediump float'