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gallium: implement min vs. mag filter determination for non-mipmapped textures

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Fixes tests/minmag.c
This commit is contained in:
Brian 2008-02-16 10:05:01 -07:00
parent f9973b1c3d
commit 08c9534107
1 changed files with 13 additions and 0 deletions
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13
src/gallium/drivers/softpipe/sp_tex_sample.c
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@ -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;