From: Roland Scheidegger <sroland@tungstengraphics.com>
Date: Sat, 19 May 2007 02:38:55 +0000 (+0200)
Subject: fix miptree layout (i915) for small compressed mipmaps
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=eb6418b8952f335b6cf58232b5f282fc3e325c7a;p=mesa.git

fix miptree layout (i915) for small compressed mipmaps

This seems to work now. Also fix i945 set_level_info, need to match i915
behaviour for storing mip height, as it's assumed to be the mip width
(in texels) elsewhere and the division by 4 is done later (untested).
---

diff --git a/src/mesa/drivers/dri/i915tex/i915_tex_layout.c b/src/mesa/drivers/dri/i915tex/i915_tex_layout.c
index 2e1600cfdfa..9f40706c36a 100644
--- a/src/mesa/drivers/dri/i915tex/i915_tex_layout.c
+++ b/src/mesa/drivers/dri/i915tex/i915_tex_layout.c
@@ -161,11 +161,9 @@ i915_miptree_layout(struct intel_mipmap_tree * mt)
             if (mt->compressed)
                img_height = MAX2(1, height / 4);
             else
-               img_height = MAX2(2, height);
+               img_height = (MAX2(2, height) + 1) & ~1;
 
 	    mt->total_height += img_height;
-	    mt->total_height += 1;
-	    mt->total_height &= ~1;
 
             width = minify(width);
             height = minify(height);
diff --git a/src/mesa/drivers/dri/intel/intel_tex_layout.c b/src/mesa/drivers/dri/intel/intel_tex_layout.c
index f3564802171..fcb5cc39068 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_layout.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_layout.c
@@ -74,7 +74,7 @@ void i945_miptree_layout_2d( struct intel_mipmap_tree *mt )
       GLuint img_height;
 
       intel_miptree_set_level_info(mt, level, 1, x, y, width, 
-				   mt->compressed ? height/4 : height, 1);
+				   height, 1);
 
       if (mt->compressed)
 	 img_height = MAX2(1, height/4);