From 08c9534107fcaf06f9b801551524ed5dc724db13 Mon Sep 17 00:00:00 2001 From: Brian Date: Sat, 16 Feb 2008 10:05:01 -0700 Subject: gallium: implement min vs. mag filter determination for non-mipmapped textures Fixes tests/minmag.c --- src/gallium/drivers/softpipe/sp_tex_sample.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src') diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c index 2f82fd6abe..c0128f81d7 100644 --- a/src/gallium/drivers/softpipe/sp_tex_sample.c +++ b/src/gallium/drivers/softpipe/sp_tex_sample.c @@ -476,6 +476,19 @@ choose_mipmap_levels(struct tgsi_sampler *sampler, /* no mipmap selection needed */ *imgFilter = sampler->state->mag_img_filter; *level0 = *level1 = (int) sampler->state->min_lod; + + if (sampler->state->min_img_filter != sampler->state->mag_img_filter) { + /* non-mipmapped texture, but still need to determine if doing + * minification or magnification. + */ + float lambda = compute_lambda(sampler, s, t, p, lodbias); + if (lambda < 0.5) { /* XXX this may need tweaking... */ + *imgFilter = sampler->state->mag_img_filter; + } + else { + *imgFilter = sampler->state->min_img_filter; + } + } } else { float lambda; -- cgit v1.2.3