i915: Fix gen2 texblend setup

Fix an off by one in the texture unit walk during texblend
setup on gen2. This caused the last enabled texunit to be
skipped resulting in totally messed up texturing.

This is a regression introduced here:
 commit 1ad443ecdd694dd9bf3c4a5050d749fb80db6fa2
 Author: Eric Anholt <eric@anholt.net>
 Date:   Wed Apr 23 15:35:27 2014 -0700

    i915: Redo texture unit walking on i830.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

diff --git a/src/mesa/drivers/dri/i915/i830_texblend.c b/src/mesa/drivers/dri/i915/i830_texblend.c
index 6e991c457745dbb638d71f2278827ecee24e8df1..236be59e23964dca8119c6a8f67b56b25e0508d6 100644 (file)
--- a/src/mesa/drivers/dri/i915/i830_texblend.c
+++ b/src/mesa/drivers/dri/i915/i830_texblend.c
@@ -445,7 +445,7 @@ i830EmitTextureBlend(struct i830_context *i830)
    I830_ACTIVESTATE(i830, I830_UPLOAD_TEXBLEND_ALL, false);
 
    if (ctx->Texture._MaxEnabledTexImageUnit != -1) {
-      for (unit = 0; unit < ctx->Texture._MaxEnabledTexImageUnit; unit++)
+      for (unit = 0; unit <= ctx->Texture._MaxEnabledTexImageUnit; unit++)
          if (ctx->Texture.Unit[unit]._Current)
             emit_texblend(i830, unit, blendunit++,
                           unit == ctx->Texture._MaxEnabledTexImageUnit);