A user from oZone3D.Net forum asked me some info about the GLSL support of Intel graphics chips. It’s wellknown (sorry Intel) that Intel has a bad OpenGL support in its Windows drivers and even if Intel’s graphics drivers support OpenGL 1.5, there is still a lack of GLSL support. We can’t find the GL_ARB_shading_language_100 extension (this extension means the graphics driver supports the OpenGL shading language) and this extension should be supported by any OpenGL 1.5 compliant graphics driver. You can use GPU Caps Viewer to check for the avaibility of GL_ARB_shading_language_100 (in OpenGL Caps tab).

Here is an example of a Intel’s graphics driver that support openGL 1.5 without supporting GLSL:
– Mobile IntelR 965 Express Chipset Family

For more examples, look at users’s submissions here: www.ozone3d.net/gpu/db/

Okay this is my analysis, but what is the Intel point of view? Here is the answer:
– x3100 & OpenGL Shader (GLSL) thread
– Intel’s answer

I think GLSL support with Windows is not a priority for Intel…