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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.  
  32. /* prepare sampler read back gX register, which would be written back to output */
  33.  
  34. /* use simd16 sampler, param 0 is u, param 1 is v. */
  35. /* 'payload' loading, assuming tex coord start from g4 */
  36.  
  37. and.nz (1) null interleaved_uv 0x01UW {align1};
  38. (f0) jmpi INTERLEAVED_UV;
  39.  
  40. /* load r */
  41. mov (1) g0.8<1>UD       0x0000e000UD { align1 mask_disable };
  42.  
  43. /* src_msg will be copied with g0, as it contains send desc */
  44. /* emit sampler 'send' cmd */
  45.  
  46. /* sample U (Cr) */
  47. send (16) src_msg_ind           /* msg reg index */
  48.         src_sample_g<1>UW       /* readback */
  49.         g0<8,8,1>UW             /* copy to msg start reg*/
  50.         sampler (3,2,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  51.                                 /* here(src->dst) we should use src_sampler and src_surface */
  52.         mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
  53.        
  54. /* sample V (Cb) */
  55. send (16) src_msg_ind           /* msg reg index */
  56.         src_sample_b<1>UW       /* readback */
  57.         g0<8,8,1>UW             /* copy to msg start reg*/
  58.         sampler (5,4,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  59.                                 /* here(src->dst) we should use src_sampler and src_surface */
  60.         mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
  61.  
  62. jmpi SAMPLE_Y;
  63.  
  64. INTERLEAVED_UV:
  65. /* load r */
  66. mov (1) g0.8<1>UD       0x0000c000UD { align1 mask_disable };
  67.  
  68. /* sample UV (CrCb) */
  69. send (16) src_msg_ind           /* msg reg index */
  70.         src_sample_g<1>UW       /* readback */
  71.         g0<8,8,1>UW             /* copy to msg start reg*/
  72.         sampler (3,2,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  73.                                 /* here(src->dst) we should use src_sampler and src_surface */
  74.         mlen 5 rlen 4 { align1 };   /* required message len 5, readback len 8 */
  75.  
  76. /* load r */
  77. mov (1) g0.8<1>UD       0x0000e000UD { align1 mask_disable };
  78.  
  79. SAMPLE_Y:
  80. /* sample Y */
  81. send (16) src_msg_ind           /* msg reg index */
  82.         src_sample_r<1>UW       /* readback */
  83.         g0<8,8,1>UW             /* copy to msg start reg*/
  84.         sampler (1,0,F)         /* sampler message description, (binding_table,sampler_index,datatype)
  85.                                 /* here(src->dst) we should use src_sampler and src_surface */
  86.         mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
  87.        
  88.