src/gallium/auxiliary/vl/vl_zscan.h

   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    struct pipe_sampler_view *scan;
  58    struct pipe_sampler_view *quant;
  59 };
  60
  61 struct vl_zscan_buffer
  62 {
  63    struct vl_zscan *zscan;
  64
  65    struct pipe_viewport_state viewport;
  66    struct pipe_framebuffer_state fb_state;
  67
  68    struct pipe_sampler_view *src, *scan, *quant;
  69    struct pipe_surface *dst;
  70 };
  71
  72 struct pipe_sampler_view *
  73 vl_zscan_linear(struct pipe_context *pipe, unsigned blocks_per_line);
  74
  75 #if 0
  76 struct pipe_sampler_view *
  77 vl_zscan_normal(struct pipe_context *pipe, unsigned blocks_per_line);
  78
  79 struct pipe_sampler_view *
  80 vl_zscan_alternate(struct pipe_context *pipe, unsigned blocks_per_line);
  81 #endif
  82
  83 bool
  84 vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
  85               unsigned buffer_width, unsigned buffer_height,
  86               unsigned blocks_per_line, unsigned blocks_total,
  87               unsigned num_channels);
  88
  89 void
  90 vl_zscan_set_layout(struct vl_zscan *zscan, struct pipe_sampler_view *layout);
  91
  92 void
  93 vl_zscan_cleanup(struct vl_zscan *zscan);
  94
  95 #if 0
  96 void
  97 vl_zscan_upload_quant(struct vl_zscan *zscan, ...);
  98 #endif
  99
 100 bool
 101 vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
 102                      struct pipe_sampler_view *src, struct pipe_surface *dst);
 103
 104 void
 105 vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer);
 106
 107 void
 108 vl_zscan_render(struct vl_zscan_buffer *buffer, unsigned num_instances);
 109
 110 #endif