GL_R11F_G11F_B10F is a renderable format (in the EXT_color_buffer_float extension) with unsigned floating-point values, which we implement using (signed) half- or single-precision floating-point types. So we need to clamp values to a positive range before writing to them. Change-Id: Ic21a5b0b33905c0aeab35299fc268158f8c679f9 Reviewed-on: https://swiftshader-review.googlesource.com/15448Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com> Tested-by: Nicolas Capens <nicolascapens@google.com>
