1 files changed, 61 insertions, 0 deletions
diff --git a/xvmc/shader/vld/frame_backward.g4a b/xvmc/shader/vld/frame_backward.g4a
new file mode 100644
index 00000000..28fe910e
--- /dev/null
+++ b/xvmc/shader/vld/frame_backward.g4a
@@ -0,0 +1,61 @@
+/*
+ * Copyright © 2009 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>
+ *    Yan Li <li.l.yan@intel.com>
+ *    Liu Xi bin<xibin.liu@intel.com>
+ */
+/* GRF allocation:
+   g1~g30: constant buffer
+           g1~g2:intra IQ matrix
+           g3~g4:non intra IQ matrix
+           g5~g20:IDCT table
+   g31:    thread payload 
+   g32:    message descriptor for reading reference data
+   g58~g81:reference data
+   g82:    thread payload backup
+   g83~g106:IDCT data                           */
+mov (8) g82.0<1>UD g31.0<8,8,1>UD {align1};
+mov(2) g31.0<1>UD g82.12<2,2,1>UW {align1};
+mov (1) g126.8<1>UD ip {align1};
+mov (1) ip g21.0<1,1,1>UD {align1};
+ 
+//Y, (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) 
+asr (2) g31.14<1>W g82.20<2,2,1>W 1W {align1};
+add (2) g32.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
+define(`input_surface',	`7')
+define(`mv1',	`g82.20')
+define(`mv2',	`g82.22') 
+include(`motion_frame_y.g4i')
+
+//UV, (x', y') = (x >> 1, y >> 1) + (motion_vector.x >> 2, motion_vector.y >> 2)
+shr (2) g31.0<1>UD g31.0<2,2,1>UD 1UD {align1};
+asr (2) g31.14<1>W g82.20<2,2,1>W 2W {align1};
+add (2) g32.0<1>UD g31.0<2,2,1>UD g31.14<2,2,1>W {align1};
+define(`input_surface1', `8')
+define(`input_surface2', `9')
+include(`motion_frame_uv.g4i')
+
+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};