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  1. /*
  2.  * Copyright © 2006 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21.  * IN THE SOFTWARE.
  22.  *
  23.  * Authors:
  24.  *    Wang Zhenyu <zhenyu.z.wang@intel.com>
  25.  *    Keith Packard <keithp@keithp.com>
  26.  */
  27.  
  28. /* Sample the src surface in planar format */
  29.  
  30. include(`exa_wm.g4i')
  31. /* UV flag */
  32. define(`nv12', `g6.0<0,1,0>UW')
  33.  
  34. /* prepare sampler read back gX register, which would be written back to output */
  35.  
  36. /* use simd16 sampler, param 0 is u, param 1 is v. */
  37. /* 'payload' loading, assuming tex coord start from g4 */
  38. cmp.g.f0.0 (1) null nv12 0x0UW {align1};
  39. (f0.0) jmpi INTERLEAVED_UV;
  40.  
  41. /* load r */
  42. mov (1) g0.8<1>UD       0x0000e000UD { align1 mask_disable };
  43. mov (8) src_msg<1>UD    g0<8,8,1>UD  { align1 mask_disable };
  44.  
  45. /* src_msg will be copied with g0, as it contains send desc */
  46. /* emit sampler 'send' cmd */
  47.  
  48. /* sample U (Cr) */
  49. send (16) src_msg_ind           /* msg reg index */
  50.         src_sample_g<1>UW       /* readback */
  51.         null
  52.         sampler (3,2,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  53.                                 /* here(src->dst) we should use src_sampler and src_surface */
  54.         mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
  55.  
  56. /* sample V (Cb) */
  57. mov (1) g0.8<1>UD       0x0000e000UD { align1 mask_disable };
  58. mov (8) src_msg<1>UD    g0<8,8,1>UD  { align1 mask_disable };
  59.  
  60. send (16) src_msg_ind           /* msg reg index */
  61.         src_sample_b<1>UW       /* readback */
  62.         null
  63.         sampler (5,4,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  64.                                 /* here(src->dst) we should use src_sampler and src_surface */
  65.         mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
  66.  
  67. jmpi SAMPLE_Y;
  68.  
  69. INTERLEAVED_UV:
  70. mov (1) g0.8<1>UD       0x0000c000UD { align1 mask_disable };
  71. mov (8) src_msg<1>UD    g0<8,8,1>UD  { align1 mask_disable };
  72.  
  73. /* sample UV (CrCb) */
  74. send (16) src_msg_ind           /* msg reg index */
  75.         src_sample_g<1>UW       /* readback */                                                                                                                        
  76.         null
  77.         sampler (3,2,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  78.                                 /* here(src->dst) we should use src_sampler and src_surface */
  79.         mlen 5 rlen 4 { align1 };   /* required message len 5, readback len 8 */
  80.  
  81. SAMPLE_Y:
  82. mov (1) g0.8<1>UD       0x0000e000UD { align1 mask_disable };
  83. mov (8) src_msg<1>UD    g0<8,8,1>UD  { align1 mask_disable };
  84.  
  85. /* sample Y */
  86. send (16) src_msg_ind           /* msg reg index */
  87.         src_sample_r<1>UW       /* readback */
  88.         null
  89.         sampler (1,0,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  90.                                 /* here(src->dst) we should use src_sampler and src_surface */
  91.         mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
  92.        
  93.