1 files changed, 69 insertions, 0 deletions

diff --git a/xvmc/shader/mc/frame_backward.g4a b/xvmc/shader/mc/frame_backward.g4a
new file mode 100644
index 00000000..f669dac5
--- /dev/null
+++ b/xvmc/shader/mc/frame_backward.g4a
@@ -0,0 +1,69 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author:
+ *    Zou Nan hai <nanhai.zou@intel.com>
+ *    Zhang Hua jun <huajun.zhang@intel.com>
+ *    Xing Dong sheng <dongsheng.xing@intel.com>
+ *
+ */
+
+/* shader for backward predict mc
+*/
+mov (8) g76.0<1>UD g1.0<8,8,1>UD {align1};
+//mov (8) g77.0<1>UD g2.0<8,8,1>UD {align1};
+
+include(`block_clear.g4i')
+
+mov (2) g1.14<1>UW g1.18<2,2,1>UW {align1};
+/* save payload */
+mov (8) g115.0<1>UD g1.0<8,8,1>UD {align1}; 
+/* 8x8 media read/write payload */
+mov (1) g1.8<1>UD 0x0070007UD {align1};  
+/* save payload, again */
+define(`dest', `g118')
+define(`input_surface', `7')
+define(`mv1',   `g115.14')
+define(`mv2',   `g115.16')
+/* Y */
+/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
+asr (2) g1.14<1>W g115.14<2,2,1>W 1W {align1};
+add (2) g2.0<1>UD g115.0<2,2,1>UD g1.14<2,2,1>W {align1};
+include(`motion_frame_y.g4i')
+/* motion_vector = motion_vector >> 1 */
+/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
+shr (2) g1.0<1>UD g115.0<2,2,1>UD 1UD {align1};
+asr (2) g115.14<1>W g115.14<2,2,1>W 1W {align1};
+asr (2) g1.14<1>W g115.14<2,2,1>W 1W {align1};
+add (2) g2.0<1>UD g1.0<2,2,1>UD g1.14<2,2,1>W {align1};
+/* U */
+define(`input_surface1',        `8')
+define(`input_surface2',        `9')
+mov (1) g2.8<1>UD 0x007000fUD  {align1};
+include(`motion_frame_uv.g4i')
+
+/* V */
+/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
+include(`addidct.g4i')
+
+send (16) 0 acc0<1>UW g0<8,8,1>UW 
+        thread_spawner(0, 0, 0) mlen 1 rlen 0 { align1 EOT};