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gallium: tweak texture filter min/mag thresholds

This commit is contained in:
Brian 2008-02-16 13:50:31 -07:00
parent 08c9534107
commit 3b2a291888
1 changed files with 5 additions and 3 deletions
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8
src/gallium/drivers/softpipe/sp_tex_sample.c
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@ -474,7 +474,6 @@ choose_mipmap_levels(struct tgsi_sampler *sampler,
{
if (sampler->state->min_mip_filter == PIPE_TEX_MIPFILTER_NONE) {
/* 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) {
@ -482,13 +481,16 @@ choose_mipmap_levels(struct tgsi_sampler *sampler,
* minification or magnification.
*/
float lambda = compute_lambda(sampler, s, t, p, lodbias);
if (lambda < 0.5) { /* XXX this may need tweaking... */
if (lambda <= 0.0) {
*imgFilter = sampler->state->mag_img_filter;
}
else {
*imgFilter = sampler->state->min_img_filter;
}
}
else {
*imgFilter = sampler->state->mag_img_filter;
}
}
else {
float lambda;
@ -500,7 +502,7 @@ choose_mipmap_levels(struct tgsi_sampler *sampler,
/* vertex shader */
lambda = lodbias; /* not really a bias, but absolute LOD */
if (lambda < 0.0) { /* XXX threshold depends on the filter */
if (lambda <= 0.0) { /* XXX threshold depends on the filter */
/* magnifying */
*imgFilter = sampler->state->mag_img_filter;
*level0 = *level1 = 0;