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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2011 Christian König
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #ifndef vl_zscan_h
  29. #define vl_zscan_h
  30.  
  31. #include "pipe/p_compiler.h"
  32. #include "pipe/p_state.h"
  33.  
  34. /*
  35.  * shader based zscan and quantification
  36.  * expect usage of vl_vertex_buffers as a todo list
  37.  */
  38. struct vl_zscan
  39. {
  40.    struct pipe_context *pipe;
  41.  
  42.    unsigned buffer_width;
  43.    unsigned buffer_height;
  44.  
  45.    unsigned num_channels;
  46.  
  47.    unsigned blocks_per_line;
  48.    unsigned blocks_total;
  49.  
  50.    void *rs_state;
  51.    void *blend;
  52.  
  53.    void *samplers[3];
  54.  
  55.    void *vs, *fs;
  56. };
  57.  
  58. struct vl_zscan_buffer
  59. {
  60.    struct pipe_viewport_state viewport;
  61.    struct pipe_framebuffer_state fb_state;
  62.  
  63.    struct pipe_sampler_view *src, *layout, *quant;
  64.    struct pipe_surface *dst;
  65. };
  66.  
  67. extern const int vl_zscan_linear[];
  68. extern const int vl_zscan_normal[];
  69. extern const int vl_zscan_alternate[];
  70.  
  71. struct pipe_sampler_view *
  72. vl_zscan_layout(struct pipe_context *pipe, const int layout[64], unsigned blocks_per_line);
  73.  
  74. bool
  75. vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
  76.               unsigned buffer_width, unsigned buffer_height,
  77.               unsigned blocks_per_line, unsigned blocks_total,
  78.               unsigned num_channels);
  79.  
  80. void
  81. vl_zscan_cleanup(struct vl_zscan *zscan);
  82.  
  83. bool
  84. vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
  85.                      struct pipe_sampler_view *src, struct pipe_surface *dst);
  86.  
  87. void
  88. vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer);
  89.  
  90. void
  91. vl_zscan_set_layout(struct vl_zscan_buffer *buffer, struct pipe_sampler_view *layout);
  92.  
  93. void
  94. vl_zscan_upload_quant(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
  95.                       const uint8_t matrix[64], bool intra);
  96.  
  97. void
  98. vl_zscan_render(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer, unsigned num_instances);
  99.  
  100. #endif
  101.