Mesa (mesa_7_6_branch): i915: Fix driver for the miptree x/y offset changes .

[Eric Anholt]

Module: Mesa
Branch: mesa_7_6_branch
Commit: 70b17db918a2784296434877a43b4c4036be792a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=70b17db918a2784296434877a43b4c4036be792a

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Oct 27 10:26:09 2009 -0700

i915: Fix driver for the miptree x/y offset changes.

Bug #24734.

---

 src/mesa/drivers/dri/i915/i830_texstate.c |   13 ++++++++++---
 src/mesa/drivers/dri/i915/i915_texstate.c |   13 ++++++++++---
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/mesa/drivers/dri/i915/i830_texstate.c b/src/mesa/drivers/dri/i915/i830_texstate.c
index 6f998fa..20ff46b 100644
--- a/src/mesa/drivers/dri/i915/i830_texstate.c
+++ b/src/mesa/drivers/dri/i915/i830_texstate.c
@@ -160,11 +160,18 @@ i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 
       pitch = intelObj->pitchOverride;
    } else {
+      GLuint dst_x, dst_y;
+
+      intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
+				     &dst_x, &dst_y);
+
       dri_bo_reference(intelObj->mt->region->buffer);
       i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
-      i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt,
-								0, intelObj->
-								firstLevel);
+      /* XXX: This calculation is probably broken for tiled images with
+       * a non-page-aligned offset.
+       */
+      i830->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
+	 intelObj->mt->cpp;
 
       format = translate_texture_format(firstImage->TexFormat->MesaFormat,
 					firstImage->InternalFormat);
diff --git a/src/mesa/drivers/dri/i915/i915_texstate.c b/src/mesa/drivers/dri/i915/i915_texstate.c
index 32d4b30..998a04f 100644
--- a/src/mesa/drivers/dri/i915/i915_texstate.c
+++ b/src/mesa/drivers/dri/i915/i915_texstate.c
@@ -171,11 +171,18 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
 
       pitch = intelObj->pitchOverride;
    } else {
+      GLuint dst_x, dst_y;
+
+      intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
+				     &dst_x, &dst_y);
+
       dri_bo_reference(intelObj->mt->region->buffer);
       i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
-      i915->state.tex_offset[unit] =  intel_miptree_image_offset(intelObj->mt,
-								 0, intelObj->
-								 firstLevel);
+      /* XXX: This calculation is probably broken for tiled images with
+       * a non-page-aligned offset.
+       */
+      i915->state.tex_offset[unit] = (dst_x + dst_y * intelObj->mt->pitch) *
+	 intelObj->mt->cpp;
 
       format = translate_texture_format(firstImage->TexFormat->MesaFormat, 
 					firstImage->InternalFormat,