Created attachment 38707 [details]
test case

GLSL spec 1.1 section 7.5 mentions below variables are built into GLSL:
gl_TextureMatrixInverse[gl_MaxTextureCoords]
gl_TextureMatrixTranspose[gl_MaxTextureCoords]
gl_TextureMatrixInverseTranspose[gl_MaxTextureCoords]

But they are not supported in either glsl2 or the old glsl compiler.

The attached case gets below compiling error:

Failed to compile fragment shader TextureMatrixInverse.frag: 0:5(34): error: `gl_TextureMatrixInverse' undeclared
0:6(36): error: `gl_TextureMatrixTranspose' undeclared
0:7(43): error: `gl_TextureMatrixInverseTranspose' undeclared

Shader source:
void main()
{
	mat4  result;
	result = gl_TextureMatrix[0];
	result = gl_TextureMatrixInverse[0];
	result = gl_TextureMatrixTranspose[0];
	result = gl_TextureMatrixInverseTranspose[0];
}