From: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date: Tue, 2 Apr 2013 22:18:29 +0000 (+0200)
Subject: nv50: account for pesky prefetch in size calculation of linear textures
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ba9b0b682f51222752ac56e7a0615f9bbb686089;p=mesa.git

nv50: account for pesky prefetch in size calculation of linear textures
---

diff --git a/src/gallium/drivers/nv50/nv50_miptree.c b/src/gallium/drivers/nv50/nv50_miptree.c
index 5c839a81104..ed0f8c2b2f1 100644
--- a/src/gallium/drivers/nv50/nv50_miptree.c
+++ b/src/gallium/drivers/nv50/nv50_miptree.c
@@ -217,6 +217,7 @@ nv50_miptree_init_layout_linear(struct nv50_miptree *mt)
 {
    struct pipe_resource *pt = &mt->base.base;
    const unsigned blocksize = util_format_get_blocksize(pt->format);
+   unsigned h = pt->height0;
 
    if (util_format_is_depth_or_stencil(pt->format))
       return FALSE;
@@ -228,7 +229,11 @@ nv50_miptree_init_layout_linear(struct nv50_miptree *mt)
 
    mt->level[0].pitch = align(pt->width0 * blocksize, 64);
 
-   mt->total_size = mt->level[0].pitch * pt->height0;
+   /* Account for very generous prefetch (allocate size as if tiled). */
+   h = MAX2(h, 8);
+   h = util_next_power_of_two(h);
+
+   mt->total_size = mt->level[0].pitch * h;
 
    return TRUE;
 }