[Libva] [PATCH 0/8] enable pixel mask on left/right/bottom boundary blocks

[Zhao Halley]

background:
not each pixel requires update in post processing, it happends:
    - on left boundary blocks since dst horizontal offset must be dword alignment
    - on right boundary blocks when offset_x+width is not 16 aligned
    - on botton boundary blocks when offset_y+height is not 8 aligned
    - (we needn't take special care to top boundary blocks, 
       since dst vertical offset only requires byte alignment)
    https://bugs.freedesktop.org/show_bug.cgi?id=51553

solution:
we introduce left/right/bottom mask to mask out the pixels which are not interested.
    - dst horizontal offset is shifted left to meet dword alignment
    - src horizontal offset requires recalcultion
    - src and dst width requires recalculation
    - src_normalized_x and normalized_video_x_scaling_step requires recalculation
    - block horizontal mask is initialized 
      + to left mask (1*N or left edge of M*1) 
      + to right mask (right edge of M*1)
      + to 0xffff, in else case 
    - block horitontal mask is updated to middle mask after the very first block, 
      and update to right mask for the very last block.
    - 'middle mask': 
      + middle mask can be equal to left mask for left strip (in M*1 block partition),
      + middle mask can be equal to right mask for the right strip (in M*1 block partition)
      + middle mask is equal to 0xffff in 1*N block partition mode
      + right edge condition is checked after middle block condition in case 
        there are just 2 blocks in the dst region
    - right mask has the similar trick as middle mask
    - block vertical mask is initialized to 0xff except it is a bottom strip 
      (in 1*N block partition mode), 
    - block vertical mask is  updated to 'bottom' mask for the very last block.
      + it is a real bottom mask in 1*N block partition, or bottom strip in M*1 block partition.
      + it is 0xff in else condition (M*1 block partition, not bottom strip)

besides nv12 avs update, I also update load/save and nv12 scaling since I used them during debug


Zhao Halley (8):
  enable horizontal and vertical mask for bottom/right boundary blocks
  reload block mask for the last(bottom/right) block in a strip
  PL8x4_Save_IMC3.asm fix of masked block
  work around hw limitation(dword alignment) of horizontal offset
  reload horizontal mask after the first block in asm code
  use load/save procedure instead of scaling only when
  work around hw limitation(dword alignment) of horizontal offset
  work around hw limitation(dword alignment) of horizontal offset

 src/i965_post_processing.c                         |  136 ++++++++++++++++----
 src/i965_post_processing.h                         |   22 +++-
 .../gen5_6/Common/Multiple_Loop.asm                |   11 +-
 .../gen5_6/Common/PL8x4_Save_IMC3.asm              |    2 +-
 .../post_processing/gen5_6/Common/common.inc       |    7 +
 .../post_processing/gen5_6/nv12_avs_nv12.g4b.gen5  |   10 +-
 .../post_processing/gen5_6/nv12_avs_nv12.g6b       |   10 +-
 .../post_processing/gen5_6/nv12_dn_nv12.g4b.gen5   |   10 +-
 .../post_processing/gen5_6/nv12_dn_nv12.g6b        |   10 +-
 .../post_processing/gen5_6/nv12_dndi_nv12.g4b.gen5 |   10 +-
 .../post_processing/gen5_6/nv12_dndi_nv12.g6b      |   10 +-
 .../gen5_6/nv12_load_save_nv12.g4b.gen5            |   10 +-
 .../post_processing/gen5_6/nv12_load_save_nv12.g6b |   10 +-
 .../gen5_6/nv12_load_save_pa.g4b.gen5              |   10 +-
 .../post_processing/gen5_6/nv12_load_save_pa.g6b   |   10 +-
 .../gen5_6/nv12_load_save_pl3.g4b.gen5             |   18 ++-
 .../post_processing/gen5_6/nv12_load_save_pl3.g6b  |   18 ++-
 .../gen5_6/nv12_load_save_rgbx.g4b.gen5            |   10 +-
 .../post_processing/gen5_6/nv12_load_save_rgbx.g6b |   10 +-
 .../gen5_6/nv12_scaling_nv12.g4b.gen5              |   10 +-
 .../post_processing/gen5_6/nv12_scaling_nv12.g6b   |   10 +-
 .../gen5_6/pa_load_save_nv12.g4b.gen5              |   10 +-
 .../post_processing/gen5_6/pa_load_save_nv12.g6b   |   10 +-
 .../gen5_6/pa_load_save_pl3.g4b.gen5               |   18 ++-
 .../post_processing/gen5_6/pa_load_save_pl3.g6b    |   18 ++-
 .../gen5_6/pl3_load_save_nv12.g4b.gen5             |   10 +-
 .../post_processing/gen5_6/pl3_load_save_nv12.g6b  |   10 +-
 .../gen5_6/pl3_load_save_pa.g4b.gen5               |   10 +-
 .../post_processing/gen5_6/pl3_load_save_pa.g6b    |   10 +-
 .../gen5_6/pl3_load_save_pl3.g4b.gen5              |   18 ++-
 .../post_processing/gen5_6/pl3_load_save_pl3.g6b   |   18 ++-
 .../gen5_6/rgbx_load_save_nv12.g4b.gen5            |   10 +-
 .../post_processing/gen5_6/rgbx_load_save_nv12.g6b |   10 +-
 33 files changed, 370 insertions(+), 136 deletions(-)
 mode change 100644 => 100755 src/shaders/post_processing/gen5_6/Common/Multiple_Loop.asm
 mode change 100644 => 100755 src/shaders/post_processing/gen5_6/Common/PL8x4_Save_IMC3.asm
 mode change 100644 => 100755 src/shaders/post_processing/gen5_6/Common/common.inc

-- 
1.7.9.5