On Tuesday 07 June 2011 11:43:17 Henri Verbeet wrote: > On 7 June 2011 11:16, Stefan Dösinger <stefandoesin...@gmx.at> wrote: > > On Tuesday 07 June 2011 11:06:25 Henri Verbeet wrote: > >> - if (gl_info->supported[ARB_SHADER_TEXTURE_LOD] && > >> reg_maps->usestexldd) > > > > Why is reg_maps->usestexldd not true in pixel shaders? > > Well, it may be, but the instruction we care about here is texldl. I > could of course add a usestexldl condition, True, my bad. In that sense the usestexldd condition was broken anyway.
> but afaik there isn't any reason not to enable ARB_shader_texture_lod if > it's available. Yep, at least not unless there's some driver bug that triggers a slowdown like with enabling GL_NV_fragment_program* in ARB shaders. I guess my nightly tests will tell us tomorrow. Fwiw, I don't expect ARB_shader_texture_lod to cost anything at least on Nvidia because their GLSL compiler enables NVfp anyway and it provides support for TXL in any case.
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