Merge branch 'mesa_7_7_branch'

[mesa.git] / src / mesa / state_tracker / st_gen_mipmap.c

diff --git a/src/mesa/state_tracker/st_gen_mipmap.c b/src/mesa/state_tracker/st_gen_mipmap.c
index f8068fa12be9b166d8993539f8361eaf2a893db7..2c283d464ae40e63e216fbfb8ca7aa879419d6bb 100644 (file)
--- a/src/mesa/state_tracker/st_gen_mipmap.c
+++ b/src/mesa/state_tracker/st_gen_mipmap.c
@@ -37,6 +37,7 @@
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_inlines.h"
+#include "util/u_format.h"
 #include "util/u_gen_mipmap.h"
 #include "util/u_math.h"
 
@@ -146,8 +147,8 @@ fallback_generate_mipmap(GLcontext *ctx, GLenum target,
       srcData = (ubyte *) screen->transfer_map(screen, srcTrans);
       dstData = (ubyte *) screen->transfer_map(screen, dstTrans);
 
-      srcStride = srcTrans->stride / srcTrans->block.size;
-      dstStride = dstTrans->stride / dstTrans->block.size;
+      srcStride = srcTrans->stride / util_format_get_blocksize(srcTrans->texture->format);
+      dstStride = dstTrans->stride / util_format_get_blocksize(dstTrans->texture->format);
 
       _mesa_generate_mipmap_level(target, datatype, comps,
                                   0 /*border*/,
@@ -224,6 +225,9 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
    /* find expected last mipmap level */
    lastLevel = compute_num_levels(ctx, texObj, target) - 1;
 
+   if (lastLevel == 0)
+      return;
+
    if (pt->last_level < lastLevel) {
       /* The current gallium texture doesn't have space for all the
        * mipmap levels we need to generate.  So allocate a new texture.