Merge branch 'upstream-gallium-0.1' into nouveau-gallium-0.1

1 files changed, 19 insertions, 3 deletions

diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c
index 2f82fd6abe..c54e9d385c 100644
--- a/src/gallium/drivers/softpipe/sp_tex_sample.c
+++ b/src/gallium/drivers/softpipe/sp_tex_sample.c
@@ -474,8 +474,24 @@ 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;
+      *level0 = *level1 = CLAMP((int) sampler->state->min_lod,
+                                0, (int) sampler->texture->last_level);
+
+      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 <= 0.0) {
+            *imgFilter = sampler->state->mag_img_filter;
+         }
+         else {
+            *imgFilter = sampler->state->min_img_filter;
+         }
+      }
+      else {
+         *imgFilter = sampler->state->mag_img_filter;
+      }
    }
    else {
       float lambda;
@@ -487,7 +503,7 @@ 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;