intel: Account for mt->offset in intel_miptree_map

We need to take account the offset from original bo when using glTexSubImage()
and other functions that manipulate the subregion of an exported texture.
Offsets are appended to mapped region address and when blitting from a source
region.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>

diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 31abdad..3c4749f 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -1120,7 +1120,7 @@ intel_miptree_map_gtt(struct intel_context *intel,
    assert(y % bh == 0);
    y /= bh;
 
-   base = intel_region_map(intel, mt->region, map->mode);
+   base = intel_region_map(intel, mt->region, map->mode) + mt->offset;
 
    if (base == NULL)
       map->ptr = NULL;
@@ -1180,7 +1180,7 @@ intel_miptree_map_blit(struct intel_context *intel,
    if (!intelEmitCopyBlit(intel,
                          mt->region->cpp,
                          mt->region->pitch, mt->region->bo,
-                         0, mt->region->tiling,
+                         mt->offset, mt->region->tiling,
                          map->stride, map->bo,
                          0, I915_TILING_NONE,
                          x, y,