[965] Replace various alignment code with a shared ALIGN() macro.

In the process, fix some alignment issues:
- Scratch space allocation was aligned into units of 1KB, while the allocation
  wanted units of bytes, so we never allocated enough space for scratch.
- GRF register count was programmed as ALIGN(val - 1, 16) / 16 instead of
  ALIGN(val, 16) / 16 - 1, which overcounted for val != 16n+1.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 0fb33e27f47..268a982a97f 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -233,8 +233,8 @@ GLboolean intel_miptree_image_data(struct intel_context *intel,
 
    if (dst->compressed) {
        alignment = intel_compressed_alignment(dst->internal_format);
-       src_row_pitch = ((src_row_pitch + alignment - 1) & ~(alignment - 1));
-       width = ((width + alignment - 1) & ~(alignment - 1));
+       src_row_pitch = ALIGN(src_row_pitch, alignment);
+       width = ALIGN(width, alignment);
        height = (height + 3) / 4;
    }