• Ville Syrjälä's avatar
    i915: Fix gl_Fragcoord interpolation · 1c409fe4
    Ville Syrjälä authored
    gl_FragCoord contains the window coordinates so it seems to me that
    we should not use perspective correct interpolation for it. At least
    now I get similar output as i965/swrast/llvmpipe produce.
    
    This fixes dEQP-GLES2.functional.shaders.builtin_variable.fragcoord_w.
    dEQP-GLES2.functional.shaders.builtin_variable.fragcoord_xyz was already
    passing, though I'm not quite sure how it managed to do that.
    
    v2: Add definitons for the S3 "wrap shortest" bits as well (Ian)
    
    Cc: mesa-stable@lists.freedesktop.org
    Reviewed-by: default avatarIan Romanick <ian.d.romanick@intel.com>
    Signed-off-by: Ville Syrjälä's avatarVille Syrjälä <ville.syrjala@linux.intel.com>
    1c409fe4
intel_reg.h 8.5 KB