Fix the comment.

Use shader_glsl_get_sample_function().
Use the GLSL builtin reflect() function.

Use shader_glsl_get_sample_function().

Use shader_glsl_get_sample_function().

Use shader_glsl_get_sample_function() rather than having the instruction handler figure it out itself.
Get rid of shader_glsl_add_dst_old().

Use the correct source swizzle.

Take the difference between ps 1.4 and earlier versions into account.

wined3d: Rewrite shader_glsl_lrp() to properly take the write mask into account, use the GLSL mix instruction.

In case of writing to an address register round the source.

wined3d: Move WINED3DSIO_SGE & WINED3DSIO_SLT from shader_glsl_map2gl() to shader_glsl_compare() where they belong.

Properly take the write mask into account

The write mask can only be one of .x, .y, .xy